• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The method for producing stretch mat laminates The present invention relates to a method for producing stretch mat laminates comprising a multilayer film and at least one mat layer and the use of such stretch mat laminates in personal care articles. The method generally includes activating the multilayer film in a first direction by stretching at least a portion of the multilayer film beyond the elastic deformation limit of the cover layers, and by recovering the cover layers with the elastomeric core layer to produce an elastomeric core layer. multilayer film that is elastic in the first direction. The activated multilayer film is subsequently stretched beyond the deformation limit of the cover layers in a second direction, substantially perpendicular to the first direction. At least one layer of blanket is applied to the multilayer film while it is in the stretched state. The multilayer film is then recovered to produce an extensible blanket laminate.
    公开号:BR112015002695A2
    申请号:R112015002695
    申请日:2013-08-07
    公开日:2019-10-01
    发明作者:S Deeb Gerald；r schoenherr Kent；A Peltier Mark；Beth Henke Mary；A Shipman Rebecca；P Hanschen Thomas；l nelson Todd；Rajagopal Vathsala；H Sikorski William Jr
    申请人:3M Innovative Properties Co；
    IPC主号:
    专利说明:

    "METHOD FOR PRODUCING EXTENSIBLE BLANKET LAMINATES" Field of the invention [001] The present invention relates to a method for producing extensible mat laminates comprising a multilayer film and at least one mat layer. The present invention also relates to the use of such extensible blanket laminates in personal care articles, such as diapers, training diapers, adult incontinence devices, baby shoes and garments.
    Background [002] Elastic films are commonly incorporated into personal care articles to better shape articles around the body. Elastic films can be used, for example, on the diaper waist and leg areas, on the side panels of training diapers, and on the cuffs of disposable suits. It is common to apply one or more layers of blanket, such as a layer of nonwoven, to elastic films to make them more similar to fabric. Typically, a layer of nonwoven is attached to the elastic film in a stretched state. When the elastic film is allowed to be recovered, the non-woven layer collapses, or shrivels, to create an extensible non-woven laminate in the direction of the stretch.
    [003] The processing of elastic films during the manufacture of stretch blanket laminates presents several challenges. For example, elastic films that are intrinsically stretch in the machine direction (DM) are difficult to maintain under constant tension on a manufacturing line and are prone to premature stretching.
    [004] Additionally, elastic films tend to narrow when stretched. When an elastic film is stretched in the DM, the increase in tightness can lead to an increase in the variability of the film width below the mat, resulting in challenges in the process for aligning the film and building a uniform product.
    Petition 870160041568, of 08/03/2016, p. 8/54
    2/39 me. As a result, diaper manufacturers will purchase wider films to ensure that the film width does not decrease below desirable dimensions during processing. Excess film or non-woven film laminate is then trimmed to produce a uniform product, a step that results in wasted trimming and potentially increased blanket breaks and downtime.
    [005] Strictness also reduces the elasticity of the film, resulting in less efficient use of a relatively expensive component of personal care articles. If a layer of nonwoven is attached to the elastic film in the stretched state, the width of the elastic film will be limited by the nonwoven to the narrowed width. In other words, the elastic film is not able to loosen at its original width, resulting in a general loss of elasticity.
    [006] Attempts have been made to reduce the amount of stretch in elastic films during processing. For example, the tightening can be minimized by reducing the spacing distance between sequential differential speed cylinders during stretching in the DM. However, such modification gives greater tension to the elastic film, resulting in more blanket breaks, rejected products and / or process downtime.
    [007] Another attempt to minimize strain involves a multilayer film comprising at least one elastomeric layer and at least one relatively non-elastomeric covering layer. The multilayer film is activated by stretching in the DM, preferably through a spatially modified activation method, as presented in US patent No. 5,344,691, “Spatially Modified Elastic Laminates” (Hanschen, et al.). Once activated, the film exhibits less strain when subsequently stretched in the DM. However, as mentioned above, films that are intrinsically stretchable in DM have their own processing challenges (more specifically, difficulty in keeping the film under tension with
    Petition 870160041568, of 08/03/2016, p. 9/54
    3/39 on a manufacturing line and premature stretching).
    [008] Therefore, there is a need for a method to produce extensible mat laminates that makes efficient use of film elasticity, minimizes film waste, and optimizes the process handling capabilities of the film.
    Summary [009] In one embodiment, the invention provides a method for producing an extensible blanket laminate comprising the steps of providing a multilayer film comprising two layers of cover and an elastomeric core layer sandwiched between them, activating the multilayer film in a first direction, subsequently stretching the multilayer film beyond the deformation limit of the cover layers in a second direction perpendicular to the first direction, laminating a layer of blanket to the multilayer film which is stretched in the second direction, and recovering the multilayer film to produce an extensible blanket laminate.
    [010] In another embodiment, the invention provides a method for producing an extensible blanket laminate comprising the steps of providing a multilayer film comprising two cover layers and an elastomeric core layer sandwiched between them, in which the film multilayer was activated in the transversal direction to the machine, stretching the multilayer film beyond the limit of deformation of the covering layers in the machine direction, laminating a layer of blanket to the multilayer film while it is stretched towards the machine, and recovering the multilayer film to produce an extensible blanket laminate.
    [011] Other features and aspects of the invention will become evident considering the detailed description and attached drawings.
    Brief description of the drawings [012] Figure 1 is a schematic cross section of a film
    Petition 870160041568, of 08/03/2016, p. 10/54
    4/39 multilayer not activated example;
    [013] Figure 2 is a schematic cross section of the film in Figure 1 after being activated in the X direction;
    [014] Figure 3 is a schematic view of an example apparatus used to form a laminate with an extendable mat;
    [015] Figure 4 is a schematic view of a ring rolling apparatus;
    [016] Figure 5 is a schematic cross section of a multilayer film that has been activated by the apparatus in Figure 4;
    [017] Figure 6 is a schematic view of an adult incontinence device;
    [018] Figures 7a-c are schematic views of an exemplary method for producing an adult incontinence device that contains an extensible blanket laminate;
    [019] Figure 8 is a schematic view of the apparatus used to measure the tightness properties provided in Example 4; and [020] Figures 9a and 9b illustrate film sample preparations to determine the force to stretch the 10% film samples towards the machine, as outlined in the Examples section.
    Detailed Description
    Definitions [021] As used here, the term "activate" and its variations, refer to a material that has been mechanically deformed in order to impart elastic extensibility to at least a portion of the material. In the context of a multilayer film comprising two cover layers and an elastomeric core layer sandwiched between them, activate refers to the process of stretching at least a portion of the multilayer film beyond the limit of elastic deformation of the covering layers and recover the multilayer film to give elastic extensibility to the film in the right direction
    Petition 870160041568, of 08/03/2016, p. 11/54
    5/39 stretch.
    [022] As used here, the term “machine direction” or “DM” in general refers to the direction in which a material is produced. The term "cross-machine direction" or "DT" refers to the direction perpendicular to the machine direction.
    [023] As used here, the term “recover”, and variations thereof, refer to a contraction of a material stretched by terminating a force of change after stretching the material by applying the force of change.
    [024] Before any modality of the invention is explained in detail, it should be understood that the invention is not limited, in its application, to the details of the construction and arrangement of the components set out in the description below or illustrated in the drawings. The invention can comprise other modalities and be practiced or carried out in several ways. It should also be understood that the phraseology and terminology used in the present invention are for the purpose of description, and should not be considered limiting. The use of "including", "comprising" or "having" and variations of this of the present invention tend to cover the items mentioned after them and their equivalents as well as additional items. Any numerical range mentioned here includes all values from the lowest value to the highest value. For example, if a concentration range is established as 1% to 50%, values like 2% to 40%, 10% to 30%, or 1% to 3% etc. are intended. are expressly listed in this specification. There are only examples of what is specifically intended, and all possible combinations of numerical values between and including the lowest and highest listed values should be considered as expressly stated in this application.
    Overview [025] The present invention relates to a method for producing extensible mat laminates that comprise a multilayer film and at least one mat layer. The multilayer film comprises two layers of coverage
    Petition 870160041568, of 08/03/2016, p. 12/54
    6/39 and an elastomeric core layer sandwiched between them. The blanket layer typically comprises a non-woven material, woven material, fine fiber netting and / or film with a textured surface (e.g. embossing pattern).
    [026] The multilayer film is generally activated in a first direction by stretching at least a portion of the multilayer film beyond the limit of elastic deformation of the covering layers and recovery of the covering layers with an elastomeric core layer to produce a multilayer film that is elastic in the first direction. The activated multilayer film is subsequently stretched beyond the yield point of the outer layers in a second direction substantially perpendicular (i.e., 90 ° ± 5 ° ) to the first direction. At least one layer of blanket is applied to the multilayer film while it is in the stretched state. The multilayer film is then recovered to produce an extensible mat laminate.
    [027] During large-scale production, multilayer film is typically supplied in cylinder form. In such cases, the first direction typically corresponds to the machine's transverse direction (DT) on a manufacturing line, and the second direction typically corresponds to the machine's direction (DM). Therefore, for the sake of simplicity, the terms DT and DM are used throughout the Order.
    [028] An advantage of the present invention is to activate the multilayer film in the DT prior to stretching in the DM. Activation in DT reduces the strain of the multilayer film during stretching in DM when contrasted with a non-activated multilayer film. The reduced strain means greater recovery of the multilayer film after stretching in the DM and, therefore, more efficient use of the elastic material. The reduced stretch also reduces the variability of the multilayer film width during processing, thus reducing the waste of film and laminate
    Petition 870160041568, of 08/03/2016, p. 13/54
    7/39 do and improving process handling capabilities. In addition, the multilayer film activated in DT is relatively inelastic in DM, and would therefore be less subject to premature stretching on a manufacturing line. Various aspects of the present invention will be discussed below.
    Multilayer films [029] The multilayer films of the present invention comprise two layers of cover and an elastomeric core layer sandwiched between them. The multilayer film is relatively inelastic before activation. However, the film can become elastic by stretching the multilayer film beyond the limit of elastic deformation of the covering layers and recovering the covering layers with the elastomeric core layer to produce a multilayer film that is elastic in the direction of the stretch. Due to the deformation of the covering layers during activation, the multilayer film exhibits a microtextured surface after recovery. Microtexture refers to the structure of the covering layers in the activation area. More particularly, the cover layers contain peak and crack irregularities or folds, the details of which cannot be seen without magnification.
    [030] An exemplary non-activated multilayer film is illustrated in Figure 1. The non-activated multilayer film 1 has two cover layers 2 and 4 and an elastomeric core layer 3 sandwiched between them. The multilayer film 1 can be activated, for example, by stretching the multilayer film 1 in the x direction beyond the limit of elastic deformation of the covering layers 2 and 4 and allowing the multilayer film 1 to recover. As illustrated in Figure 2, the activated multilayer film 5 exhibits a micro-textured surface structure 6.
    [031] Although Figure 2 illustrates the microtextured surface structure over the entire film, it should be understood that regions of the multilayer film can be
    Petition 870160041568, of 08/03/2016, p. 14/54
    8/39 activated while providing elasticity to the film as a whole. Figure 5 illustrates the microtexture surface structure of a multilayer film that is activated in selected regions. For example, the film in Figure 1 can be extended incrementally using a ring rolling apparatus, as discussed in more detail below. Alternatively, the multilayer film can be designed to preferably stretch in certain regions by controlling the values of relative elastic modulus of selected cross-sectional areas of the multilayer film, to be less than the module values of the adjacent cross-sectional areas of the multilayer film , thus leading to an elastic multilayer film that has activated and non-activated regions.
    [032] The elastomeric core layer can broadly include any material that is capable of forming a thin film layer and exhibits elastomeric properties under ambient conditions. Elastomeric means that the material will substantially return to its original shape after being extended. Preferably, the elastomeric core layer will sustain only small permanent deformation after deformation of the covering and recovery layers, which is preferably set at less than 20 percent and more preferably at less than 10 percent of the original length, after moderate elongation, for example, about 400 to 500%. Generally, any layer of elastomeric core is acceptable, which is capable of being stretched to a degree that causes relatively consistent permanent deformation in the cover layers. This can be as low as 50% elongation. Preferably, however, the elastomeric core layer is capable of undergoing up to 300 to 1,200% elongation at room temperature and, most preferably, up to 600 to 800% elongation at room temperature. The elastomeric core layer can be both: pure elastomers and combinations with an elastomeric phase or content that will still exhibit substantial elastomeric properties at room temperature.
    Petition 870160041568, of 08/03/2016, p. 15/54
    9/39 [033] Both elastomers, heat shrink and non-heat shrink are contemplated for use in the present invention. However, non-heat-shrink elastomers are preferred from a processing point of view. Non-heat shrink means that the elastomer, when stretched, will recover substantially without application of heat, maintaining only a small permanent deformation, as discussed above. Non-heat shrinkable polymers include block copolymers such as those known to those skilled in the art as block copolymers A-B or A-B-A. Such block copolymers are described, for example, in US Patent No. 3,265,765, "Block Polymers of Monovinyl Aromatic Hydrocarbons and Conjugated Dienes" (Holden, et al.); US Patent No. 3,562,356, "Block Copolymer Blends with Certain Ethylene-Unsaturated Ester Copolymers" (Nyberg, et al.); US patent No. 3,700,633, "Selectively Hyrdogenated Block Copolymers" (Wald, et al.); US Patent No. 4,116,917, “Hydrogenated Star-Shaped Polymer” (Eckert); and US Patent No. 4,156,673, “Hydrogenated Star-Shaped Polymer” (Eckert). The styrene / isoprene, butadiene or ethylene-butylene / styrene block copolymers (SIS, SBS or SEBS) are particularly useful. Other useful elastomeric compositions may include elastomeric polyurethanes, ethylene copolymers such as ethylene-vinyl acetates, ethylene / propylene copolymer elastomers or ethylene / propylene / diene elastomers. Combinations of these elastomers with each other or with modified non-elastomers are also considered. In some embodiments, the elastomeric core layer is a mixture of styrene-isoprene-styrene (SIS) and polystyrene. In more specific modalities, the SIS: polystyrene weight ratio ranges from 2: 1 to 19: 1.
    [034] Viscosity-reducing polymers and plasticizers can also be combined with elastomers such as low molecular weight polyethylene and polypropylene polymers and copolymers, or taching resins. Tackers can also be used to increase the adhesiveness of an elastomeric core layer to a cover layer. Examples of taquifiers include
    Petition 870160041568, of 08/03/2016, p. 16/54
    10/39 liquid aliphatic or aromatic hydrocarbon taquifiers, polyiterpene resin taquifiers and hydrogenated taquifying resins. Aliphatic hydrocarbon resins are preferred.
    [035] Additives such as dyes, pigments, antioxidants, antistatic agents, bonding aid elements, fillers, anti-blocking agents, gliding agents, heat stabilizers, photostabilizers, foaming agents, glass bubbles, reinforcing fiber, metal and starch salts for degradability or microfibers can also be used in the elastomeric core layer.
    [036] The covering layers can be formed from any amorphous or semicrystalline polymer that is less elastic than the elastomeric core layer and will undergo permanent deformation in the desired stretch percentage of the multilayer film. Therefore, slightly elastomeric compounds, such as some olefinic elastomers, for example ethylene-propylene elastomers or ethylene-propylene-diene elastomers or ethylene copolymers, for example, ethylene vinyl acetate, can be used as cover layers, alone or in combinations. However, the cover layer is generally a polyolefin such as polyethylene, polypropylene, polybutylene or a polyethylene-polypropylene copolymer, but it can also be totally or partially polyamide such as nylon, polyester such as polyethylene terephthalate, polyvinylidene, polyacrylate as poly (methyl methacrylate) (combinations only) and the like, and combinations thereof. Generally, after activating the multilayer film, the cover layers are in contact with the elastomeric core layer in at least one of three suitable modes: first, continuous contact between the core layer and the microtextured cover layers, as illustrated in Figure 2; second, continuous contact between the core layer and the microtextured cover layers with cohesive failure in the core layer; and third, adhesive failure of the covering layers in the core layer under the microtextured folds with an intermittent covering layer at the
    Petition 870160041568, of 08/03/2016, p. 17/54
    11/39 contact of the core layer. Generally, in the context of the present invention, all three forms of contact between the core layer and the cover layer are acceptable. However, preferably the core and cover layers are in substantially continuous contact, in order to minimize the possibility of delamination of the cover layers of the core layer.
    [037] Useful additives in the covering layers include, but are not limited to, mineral oil extenders, antistatic agents, pigments, dyes, anti-blocking agents established in amounts less than about 15%, metal and starch salts for degradability and stabilizers , such as those described for the elastomeric core layer.
    [038] Other layers can be added between the elastomeric core layer and the cover layers, such as fixation layers, to optimize the bonding of the core and cover layers. The fixation layers can be formed of, or composed of, typical compounds for this use, including modified maleic anhydride elastomers, ethyl vinyl defines and acetates, polyacrylic imides, butyl acrylates, peroxides such as peroxy-polymers, for example, peroxyolefins , silanes, for example, epoxy silanes, reactive polystyrenes, dorado polyethylene, modified acrylic acid polyolefins and ethyl vinyl acetates with functional groups acetate and anhydride and the like, which can also be used in combinations or as compatibilizers or additives that promote delamination in one or more of the core or cover layers.
    [039] Multilayer films can be prepared by coextruding the elastomeric core layer and the covering layers. Alternatively, multilayer films can be prepared by applying the elastomeric core layer over the covering layers or vice versa. Such techniques are well known to those skilled in the art.
    [040] The thickness ratio between the core layer and the cover layer of the
    Petition 870160041568, of 08/03/2016, p. 18/54
    12/39 multilayer films are preferably controlled to allow essentially homogeneous activation of the multilayer film. The thickness ratio between the core layer and the cover layer is defined as the ratio of the thickness of the elastomeric core layer to the sum of the thicknesses of the two cover layers. In addition, the thickness ratio between the core layer and the multilayer film cover layer needs to be selected so that when the cover layers are stretched beyond their limit of elastic deformation and relaxed with an elastomeric core layer, the layers cover form a micro-textured surface. The desirable ratio between the core layer and the cover layer will depend on several factors, including the composition of the film. In some embodiments of the present invention, the core: coverage ratio of the multilayer film is at least 2: 1. In other modalities, the core: coverage ratio of the multilayer film is at least 3: 1.
    [041] It is also desirable that multilayer films exhibit a strength to stretch 10% in DM, as defined in the Examples section, of at least 2.5 N / 25.4 mm, more preferably at least 5 N / 25.4 mm. The force to stretch 10% in the DM correlates with the amount of force necessary to stretch the covering layers of the multilayer film beyond its limits of elastic deformation. The strength to stretch 10% in the DM should be high enough to reduce premature stretching of the multilayer film in a process line. In some embodiments of the present invention, the force to stretch 10% in DM ranges from 5 N / 25.4 mm to 10 N / 25.4 mm.
    [042] Exemplary multilayer films for the present invention are disclosed in US patent No. 5,462,708, "Elastic Film Laminate" (Swenson, et al.), US patent No. 5,344,691, "Spatially Modified Elastic Laminates" (Hanschen , et al.), and US Patent No. 5,501,679, “Elastomeric Laminates with Microtextured Skin Layers” (Krueger, et al.), which are incorporated herein by reference. Ade movies
    Petition 870160041568, of 08/03/2016, p. 19/54
    13/39 commercially available units include M-235 available from 3M Company in St. Paul, Minnesota, USA.
    [043] The covering layers of multilayer films can have the same composition or be different. Similarly, the cover layers can be the same thickness or different. In a preferred embodiment, the covering layers have the same composition and thickness.
    [044] In some embodiments of the present invention, a core layer of the multilayer film is a styrenic block copolymer and the covering layers of the multilayer film are each a polyolefin. In other embodiments, the core layer of the multilayer film is a mixture of SIS and polystyrene and the covering layers of the multilayer film are each a mixture of polypropylene and polyethylene. In yet other embodiments, the core layer of the multilayer film is a mixture of SIS and polystyrene and the covering layers of the multilayer film are each polypropylene.
    Blankets [045] The blanket layer largely comprises a material that is non-sticky and, preferably, soft to the touch. Examples of blanket materials include non-woven materials, woven materials, fine fiber entanglement and films with a textured surface (eg embossing pattern). The blanket materials can be inelastic or elastic.
    [046] Nonwoven blankets are particularly suited for stretch blanket laminates in the personal care industry. The term "nonwoven blanket" generally refers to a blanket that has a structure of individual fibers or threads that are interspersed, but not in an identifiable way as in a knitted fabric. Suitable processes for producing nonwoven webs include, but are not limited to, air deposition, continuous spinning, hydroentangling, bonded webs produced by melting and so on.
    Petition 870160041568, of 08/03/2016, p. 20/54
    14/39 pro, and carded filament blankets. Continuous spinning nonwoven blankets are produced by extruding a fused thermoplastic like filaments from a series of fine die holes in a die. The diameter of the extruded filaments is rapidly reduced under tension by, for example, extraction of noneductive or eductive fluid or other continuous spinning mechanisms known in the art, as described in US Patent No. 4,340,563, “Method for Forming Nonwoven Webs” (Appel, et al.); US patent 3,692,618, “Continuous Filament Nonwoven Web” (Dorschner et al.); US Patent No. 3,338,992, “Process for Forming NonWoven Filamentary Structures from Fiber-Forming Synthetic Organic Polymers” (Kinney); US patent No. 3,341,394, “Sheets of Randomly Distributed Continuous Filaments” (Kinney); US Patent No. 3,502,763, "Process of Producing Non-Woven Fabric Fleece" (Hartmann); and US Patent No. 3,542,615, “Process for Producing a Nylon Non-Woven Fabric” (Dobo et al.).
    [047] The nonwoven blanket layer can also be produced from carded filament blankets. The carded blankets are produced from separate textile fibers, which are passed through a combing or carding unit that separates and aligns the textile fibers in the direction of the machine, in order to form a fibrous nonwoven blanket generally oriented in the direction of the machine. However, randomizers can be used to reduce this orientation towards the machine. Once formed, the carded mat is then connected by one or more of several bonding methods, which give the same suitable traction properties. A bonding method is powder bonding, in which a powder adhesive is distributed through the mat and then activated, generally by heating the mat and the adhesive with hot air. Another method of bonding is pattern bonding, in which cylinders for hot calendering or ultrasonic welding equipment are used to bond the fibers, usually in a localized bonding pattern, although the blanket can be attached transversely to its super
    Petition 870160041568, of 08/03/2016, p. 21/54
    15/39 entire surface if so desired. Generally, the more the fibers of a blanket are bonded together, the greater the tension properties of the nonwoven blanket.
    [048] Air deposition is another process by which fibrous nonwoven blankets useful to the present invention can be produced. In the air deposition process, groups of small fibers that generally have lengths ranging from about 6 to about 19 millimeters are separated and dragged into an air supply and then deposited on a forming screen, often with assistance. of a vacuum supply. The fibers deposited at random are then connected to each other using, for example, hot air or a spray applied adhesive.
    [049] Alternatively, blow-molded blankets or hydro-interlaced nonwoven blankets known in the art or the like can be used to form the nonwoven blankets. Blow-molded blankets are formed by extrusion of thermoplastic polymers from multiple matrix orifices, from which the streams of polymeric melt material are immediately attenuated by air or hot steam at high speed, along the two faces of the matrix immediately where the polymer comes out of the matrix holes. The resulting fibers are interwoven into a coherent blanket in the resulting turbulent air stream, prior to collection on a collecting surface. Generally, to provide sufficient integrity and strength for the present invention, blow cast blankets must be additionally bonded, such as by air, heat or ultrasonic welding, as described above.
    [050] Fibers suitable for forming a nonwoven blanket can include, but are not limited to, natural fibers (eg, wood pulp or cotton), synthetic fibers produced from a wide variety of thermoplastic polymers, and combinations of these . Thermoplastic fibers suitable for
    Petition 870160041568, of 08/03/2016, p. 22/54
    16/39 polymers are selected from polyolefins, polyamides, polyesters, copolymers containing acrylic monomers, and combinations and copolymers of these. Suitable polyolefins include polyethylene, for example, linear low density polyethylene, high density polyethylene, low density polyethylene and medium density polyethylene; polypropylene, for example, isotactic polypropylene, syndiotactic polypropylene, combinations thereof and combinations of isotactic polypropylene and atactic polypropylene; polybutylene, for example, poly (1-butene) and poly (2-butene); and polypentene, for example, poly-4-methylpentene-1 and poly (2-pentene); as well as combinations and copolymers thereof. Suitable polyamides include nylon 6, nylon 6/6, nylon 10, nylon 4/6, nylon 10/10, nylon 12, nylon 6/12, nylon 12/12, and hydrophilic polyamide copolymers such as caprolactam copolymers and an oxide alkylene, for example, ethylene oxide, and copolymers of hexamethylene adipamide and an alkylene oxide, as well as combinations and copolymers thereof. Suitable polyesters include polyethylene terephthalate, polybutylene terephthalate, polycyclohexylenedimethylene terephthalate, and combinations and copolymers thereof. Acrylic copolymers include ethylene acrylic acid, ethylene methacrylic acid, ethylene-methyl acrylate, ethylene-ethyl acrylate, ethylene-butyl acrylate and combinations thereof.
    [051] There are no specific limitations on the blanket selection. In some embodiments of the present invention, the blanket is a nonwoven of continuous spinning that has a base weight in the range of 10 to 13 g / m 2 .
    [052] The extendable blanket laminate may comprise one or more blankets. Blankets can be coextensive with the multilayer film or have different dimensions than the multilayer film. If the extendable blanket laminate comprises multiple blankets, the blankets can have the same or different composition (s), the same or different base weight (s) , and the same or different dimension (s).
    Petition 870160041568, of 08/03/2016, p. 23/54
    17/39
    Method [053] An example apparatus 10 for producing an extensible mat laminate is illustrated in Figure 3. A multilayer film 12 is initially activated in the DT (not shown) by stretching at least a portion of the multilayer film beyond the limit of elastic deformation of the covering and recovery layers of the multilayer film to provide elastic extensibility to the film in the direction of stretching. DT stretching can be affected by a number of devices well known to those skilled in the art including, but not limited to, strips, diverging discs and incremental stretching devices.
    [054] Stretching by strips is described, for example, in US Patent No. 7,320,948, “Extensible Laminate Having Improved Stretch Properties and Method for Making Same” (Morman, et al.). Stretching by divergent discs is described, for example, in US Publication No. 2011/0151739, "Activatable Precursor of a Composite Laminate Web and Elastic Composite Laminate Web" (Bosler et al.).
    [055] A suitable incremental stretching device includes the ring rolling apparatus described in US Patent No. 5,366,782, "Polymeric Web Having Deformed Sections Which Provide a Substantially Increased Elasticity to the Web" (Curro). As shown in Figure 4, the ring laminating apparatus 270 includes opposing rollers 272 which have interwoven teeth 274 which increasingly stretch the multilayer film as it passes through the rollers 272. Rollers 272 consist of teeth 274, which are separated by a uniform distance, P, more commonly known as an interval. The teeth 274 of each cylinder 272 are spaced P / 2 apart from each other. The distance between the outer circumferences 276 of the cylinders 272 can be varied by an interlocking distance, E, more commonly known as the hitch.
    [056] As the multilayer film enters the ring rolling apparatus 270, the film is constricted at the tips of the teeth 274 and stretched in an increasing way between
    Petition 870160041568, of 08/03/2016, p. 24/54
    18/39 teeth 274, in an amount that is proportional to the gap, P, and the engagement, E. As the engagement E of the cylinders 272 is increased, the amount of stretching in this region of the film is increased. In the present method, the amount of stretching between teeth 274 is sufficient to stretch the covering layers of the multilayer film beyond its deformation limits. When the film exits cylinders 272, the deformed cover layers relax with the elastomeric layer to create alternating bands of activated and non-activated film. The ring lamination film is therefore elastic in the DT within the activated bands. The cover layers on the activated layers of the multilayer film will exhibit a micro-textured surface structure.
    [057] Figure 5 illustrates a multilayer film segment activated by ring lamination. The multilayer film 300 has regions of activated film 302 and non-activated 304. The regions of activated film 302 exhibit microtextured surface structure 306.
    [058] Regardless of the method, activation in the DT requires that the multilayer film covering layers be stretched beyond its limits of elastic deformation. The degree of stretch given to the film can be represented by the stretch ratio. The stretch ratio in the activation context in the DT is defined as the width of the stretched film to the width of the unstretched film. The typical stretch ratio is greater than that required to stretch the cover layers beyond the limit of elastic deformation, but less than that required to permanently deform the elastic core layer, except for the small permanent deformation mentioned above. In some embodiments, the stretch ratio of the multilayer film ranges from 2: 1 to 5: 1.
    [059] The activation in the DT of the multilayer film can be carried out in line with the device used to produce the laminate of the extensible mat. Alternatively, activation in DT can be performed offline and the multilayer film activated in DT 12 supplied in the form of a cylinder.
    Petition 870160041568, of 08/03/2016, p. 25/54
    19/39 [060] As illustrated in Figure 3, the multilayer film activated in DT 12, whether activated in line or offline, is transferred by one or more guide cylinders 14 to a series of differential speed cylinders 16, 18 and 20. There is no changing force on the multilayer film 12 in the DT as it is introduced into the apparatus 10. As the multilayer film 12 passes through the differential speed cylinders 16, 18 and 20, the film is stretched on the DM beyond the limit of deformation of the covering layers.
    [061] In one embodiment, the differential speed cylinders 16, 18 and 20 operate at increasing speeds, according to how far along the line they are located, with cylinder 20 operating at the highest speed and cylinder 16 operating at the slowest speed. The speed can increase linearly or non-linearly from one cylinder to the next. In an alternative embodiment, speed cylinders 16, 18 and 20 can pulse. For example, cylinder 18 can operate at a slower speed than any of cylinders 16 and 20, causing the film to pass through stretch and recovery sequences. The distance between adjacent speed cylinders 16, 18 and 20 can be the same or different. The horizontal spacing between cylinders 16, 18 and 20 must be greater than the thickness of the film. Although three differential speed cylinders 16, 18 and 20 are illustrated in Figure 3, it should be understood that two or more differential speed cylinders can be used.
    [062] The blanket layer 22 is introduced into the apparatus 10 by the guide roller 26 on one side of the multilayer film 12. The blanket layer 24 is introduced into the apparatus by the guide cylinders 28 and 30 on the opposite side of the film. multilayer film 12. In some embodiments, the layers 22 and 24 are applied to only a portion of the multilayer film 12. In other embodiments, the layers 22 and 24 are coextensive with the multilayer film 12. In still other embodiments, blanket layers 22 and 24 are wider
    Petition 870160041568, of 08/03/2016, p. 26/54
    20/39 in the DT than the multilayer film 12. The layers 22 and 24 can have the same composition or a different composition. The width of the blanket layers 22 and 24 in the DT can be the same or different.
    [063] Layers 22, 12 and 24 are then laminated together using ultrasonic welding (or bonding). Ultrasonic welding generally refers to a process performed, for example, by passing layers 22, 12 and 24 between a sonic horn 36 and a standardized cylinder (for example, support cylinder) 34. Such connection methods are well known in the technique. For example, ultrasonic welding using a stationary horn and a rotating standardized support cylinder is described in US Patent No. 3,844,869, “Apparatus for Ultrasonic Welding of Sheet Materials” (Rust Jr.); and US patent No. 4,259,399, "Ultrasonic Nonwoven Bonding" (Hill). In addition, ultrasonic welding using a rotating horn with a standardized rotating support cylinder is described in US patent No. 5,096,532, “Ultrasonic Rotary Horn” (Neuwirth, et al.); US patent No. 5,110,403, “High Efficiency Ultrasonic Rotary Horn” (Ehlert); and US Patent No. 5,817,199, "Methods and Apparatus for a Full Width Ultrasonic Bonding Device" (Brennecke, et al.). Of course, any other ultrasonic welding technique can also be used in the present invention.
    [064] In some embodiments, the standardized cylinder 34 and the differential speed cylinder 20 operate at the same speed. In alternative embodiments, the standardized cylinder 34 and the differential speed cylinder 20 operate at different speeds, in which the standardized cylinder 34 acts as an extension of the differential speed cylinders 16, 18 and 20.
    [065] The laminated layers 12, 22 and 24 are removed from the standard support 34 and recovered to form an extensible mat laminate 38. The extensible mat laminate 38 can be stored in a cylinder shape (not shown) for incorporation into an article in a separate process. Alternatively, the blanket laminate can be stored in the form of a cylinder in the stretched state and recovered in
    Petition 870160041568, of 08/03/2016, p. 27/54
    21/39 a later time.
    [066] It is also possible to combine the method of producing an extensible blanket laminate with a consecutive article manufacturing process. For example, the blanket laminate can be maintained in a stretched state after it is removed from the standard support 34 and incorporated into an article in a consecutive process, before allowing the blanket laminate to recover.
    [067] Although Figure 3 uses ultrasonic welding to combine the layers of the mat laminate, it should be understood that the mat layers can be laminated to the multilayer film through a variety of processes that include, but are not limited to, adhesive bonding , thermowelding, connection by points, ultrasonic welding and combinations thereof. Suitable adhesives include water-based, solvent-based, pressure-sensitive and hot-melt adhesives. Each of these processes is well known to those skilled in the art.
    [068] It should be recognized that the extensible mat laminate may comprise only one mat layer or more than two layers of mat. For example, in Figure 3, the blanket layer 22 or 24 could be omitted, thus generating an extensible blanket laminate with only one blanket layer.
    [069] In one embodiment of the present invention, mat layers 22 and 24 each comprise a nonwoven layer and are ultrasonically welded to the multilayer film activated in DT 12. Ultrasonic welding is particularly advantageous for a laminate of blanket of this construction, as described in US patent No. 6,884,494, “Laminate Web” (Curro et al.). Ultrasonic welding can be used to join the two layers of nonwoven into the multilayer film, creating an extensible nonwoven laminate in which the multilayer film has openings but the nonwoven layers do not. This configuration is particularly useful in applications that require breathability. The two layers of non
    Petition 870160041568, of 08/03/2016, p. 28/54
    22/39 fabric can be the same or different. In some cases, it is advantageous if a nonwoven layer has a higher base weight than the other.
    [070] In an alternative embodiment, the layers 22 and 24 each comprise a non-woven layer and are ultrasonically welded to the multilayer film activated in DT 12, so that openings are created in the connection sites that are extend through the multilayer film and both layers of nonwoven. The two layers of nonwoven can be the same or different. In some cases, it is advantageous if one layer of nonwoven has a higher base weight than the other.
    [071] In another embodiment, a single layer of non-woven 22 or 24 is laminated to the multilayer film activated on the CD. This results in an extensible blanket laminate that has a nonwoven layer on one side and the microtextured surface of the multilayer film on the opposite side. The micro-textured surface is typically non-sticky and soft to the touch, and can be used as an outer layer in various processes and applications.
    [072] In yet another embodiment, a single layer of nonwoven is laminated to the activated film in the DT using any of the aforementioned lamination processes in which the multilayer film is colored and / or contains a printing pattern. The multilayer film can be colored by adding pigments and / or dyes to one or more layers of the multilayer film. A printing pattern can be added to the multilayer film using a variety of printing processes known in the art. The impression can be added to the multilayer film, for example, before activation in the DT.
    [073] The above method provides several advantages. For example, by activating the multilayer film in the DT prior to stretching in the DM, the amount of strain during stretching in the DM is reduced when contrasted with the stretching in the DM of an unactivated multilayer film. The reduction in% of striction of a film
    Petition 870160041568, of 08/03/2016, p. 29/54
    23/39 multilayer drawn in the DM that was activated in the DT is at least 1%, more particularly at least 5%, and even more particularly at least 10%. This includes modalities in which the reduction in% of striction of a multilayer film drawn in the DM that was activated in the DT is from 1% to 17%. Reduced tightness means greater recovery of the multilayer film after stretching in the DM and, therefore, more efficient use of the elastic layer in the film. Reduced tightness also reduces the variability of the multilayer film width during processing, thereby eliminating wasted film and improving process handling capabilities.
    [074] In addition, the relatively inelastic multilayer film is less prone to premature stretching on a manufacturing line. The covering layers of the multilayer film make the non-activated film relatively inelastic. Only when the multilayer film is stretched beyond the limit of deformation of the covering layer (s) can the film become elastic. Therefore, a multilayer film that was activated in DT is still relatively inelastic in DM. As long as the tension in the multilayer film on a manufacturing line is less than that required to exceed the strain limit, the film will be less likely to stretch prematurely. The multilayer films used in the present invention preferably exhibit a strength to draw 10% in the DM of at least 2.5 N / 25.4 mm, in which the multilayer film was activated in the DT before stretching in the DM.
    Applications [075] Extensible mat laminates produced according to the method above can be used in a variety of applications. Suitable applications include, but are not limited to, elastic components in personal care items, such as diapers, training diapers, adult incontinence devices, baby shoes and clothing.
    [076] Figure 6 illustrates an adult incontinence device 340 that
    Petition 870160041568, of 08/03/2016, p. 30/54
    24/39 comprises extensible mat laminates of the present invention. The adult incontinence device 340 comprises an anterior waist region 342, posterior waist region 344 and central region 346.
    [077] During use, the central region 346 fits between the individual's legs and is designed to absorb and retain body fluids. The central region typically comprises a liquid-permeable top layer, a liquid-impermeable bottom layer and an absorbent core between them. The liquid-permeable top layer may consist of a nonwoven layer, as already described above in relation to the blanket layer of the stretch blanket laminate. Additional examples of top layer materials are porous foams, plastic films with openings, etc. The materials suitable for the upper layer must be soft and non-irritating to the skin and be immediately penetrated by urine.
    [078] The liquid-impermeable bottom layer may consist of a thin plastic film, for example, a polyethylene or polypropylene film, a non-woven material coated with a liquid-impermeable material, a hydrophobic non-woven material that resists liquid penetration, or laminates of plastic films and non-woven materials. The material of the lower layer can be breathable, in order to allow steam to escape from the absorbent core, while also preventing liquids from passing through the material of the lower layer.
    [079] The materials of the upper layer and the lower layer typically extend beyond the absorbent core and are connected to each other, for example, by gluing or heat or ultrasonic welding, around the periphery of the absorbent core. The top layer and / or the bottom layer can also be attached to the absorbent core using any method known in the art, such as adhesive, heat bonding, etc. The absorbent core can also be released from the top layer and / or the bottom layer.
    [080] The absorbent body can be of any conventional type. Examples of
    Petition 870160041568, of 08/03/2016, p. 31/54
    25/39 Commonly occurring absorbent materials are fluff cellulose pulp, layers of fine fabric, highly absorbent polymers (so-called superabsorbents), absorbent foam materials, absorbent non-woven materials or the like. It is common to combine fluff cellulose pulp with superabsorbents in an absorbent body. It is also common to have absorbent bodies that comprise layers of different material with different properties in relation to liquid reception capacity, liquid distribution capacity and storage capacity. The thin absorbent bodies often comprise a mixed compressed or layered structure of cellulose pulp type "fluff" and superabsorbent.
    [081] A process 350 for producing the adult incontinence device 340 is illustrated in Figures 7a-c. The frontal and posterior waist regions 342 and 344 in Figure 6 are produced from elastic blanket laminates of the present invention and assist in adapting the adult incontinence device 340 to the body contours.
    [082] As illustrated in Figure 7a, two extendable mat laminates 352 and 354 of the present invention rotate parallel to each other on a manufacturing line 350. An extendable mat corresponds to the anterior waist region 342 of the adult incontinence device and the second extensible mat corresponds to the posterior waist region 344, as shown in Figure 6. The mat laminates 352 and 354 are typically kept in a stretched state during processing. A gap exists between the two blanket laminates for placing the central region 356 of the adult incontinence device.
    [083] The central region 356 typically comprises a liquid-permeable top layer, a liquid-impermeable bottom layer and an absorbent core between them, as discussed above. The central region can be mounted offline or mounted further in process 350. In any case, the central region
    Petition 870160041568, of 08/03/2016, p. 32/54
    26/39 trai 356 is placed transversely to the mat laminates 352 and 354, so that one end of the central region 356 overlaps the mat laminate 352, and the opposite end of the central region 356 overlaps the mat laminate 354. The central regions 356 are placed at predetermined intervals, leaving spacing between central regions in adjacent positions 356. Central regions 356 are attached to the laminate mat 352, 354 using any known techniques, including, but not limited to, adhesive bonding, bonding heat, ultrasonic welding, sewing or similar.
    [084] The combined mat (i.e., mat laminates 352 and 354 and central regions 356) is then folded over itself as shown in Figure 7b so that the two mat laminates are coextensive with each other. The mat laminates 352 and 354 are then fixed along the connecting lines 358 by, for example, gluing or welding by heat or ultrasonic, and simultaneously, or subsequently cut. The blanket laminates 352 and 354 recover to create the adult incontinence devices 340, as illustrated in Figures 7c and 6.
    [085] Figures 7a-c illustrate only one method for the production of articles containing the extensible mat laminates of the present invention. There are numerous variations on this method that are known to those skilled in the art. In addition, the stretch blanket laminate of the present invention can be used in a variety of applications in which elastic bands are typically used to adapt articles to body contours. Methods of producing such articles are also well known in the art.
    Some embodiments of the invention [086] In a first embodiment, the present description provides a method for producing an extensible blanket laminate comprising:
    [087] provide a multilayer film comprising two layers of cover
    Petition 870160041568, of 08/03/2016, p. 33/54
    27/39 ture and an elastomeric core layer sandwiched between them, in which the multilayer film was activated in the transversal direction to the machine;
    [088] stretching the multilayer film beyond the limit of deformation of the covering layers in the direction of the machine;
    [089] laminate a layer of blanket to the multilayer film while it is stretched in the direction of the machine; and [090] recovering the multilayer film to produce an extensible mat laminate.
    [091] In a second modality, the present description provides the method of the first modality, in which the multilayer film that was activated in the transversal direction to the machine exhibits microtextured surface structure over at least a portion of the multilayer film.
    [092] In a third modality, the present description provides the method of the first or second modalities, in which the multilayer film was activated in the transversal direction to the machine by means of incremental stretching.
    [093] In a fourth modality, the present description provides the method of the first or second modalities, in which the multilayer film was activated in the transversal direction to the machine by means of divergent discs.
    [094] In a fifth modality, the present description provides the method of any modality from the first to the fourth, in which the stretch ratio of the multilayer film during activation in the transversal direction to the machine was from 2: 1 to 5: 1.
    [095] In a sixth modality, the present description provides the method of any modality from the first to the fifth, in which the multilayer film is stretched towards the machine by means of differential speed cylinders.
    [096] In a seventh modality, the present description provides the method of any modality from the first to the sixth, in which the multilayer film is colored and / or contains a printing pattern.
    Petition 870160041568, of 08/03/2016, p. 34/54
    28/39 [097] In an eighth modality, the present description provides the method of any modality from the first to the seventh, where the blanket layer is a non-woven layer.
    [098] In a ninth modality, the present description provides the method of any modality from the first to the eighth, additionally providing a second layer of mat that is laminated to the multilayer film while it is stretched in the direction of the machine, in which the multilayer film is sandwiched between the two layers of blanket.
    [099] In a tenth modality, the present description provides the method of any modality from the first to the ninth, in which the layers of the mat are laminated to the multilayer film by means of adhesive bonding, thermowelding, spot bonding, ultrasonic welding or combinations thereof.
    [0100] In an eleventh modality, the present description provides the method of any modality from the first to the ninth, in which the blanket layers are laminated to the multilayer film by means of ultrasonic welding.
    [0101] In a twelfth embodiment, the present description provides the method of the eighth modality, additionally providing a second layer of nonwoven which is laminated to the multilayer film while it is stretched in the direction of the machine, in which the multilayer film is sandwiched between the two layers of nonwoven.
    [0102] In a thirteenth modality, the present description provides the method of the twelfth modality, in which each of the nonwoven layers has a different base weight.
    [0103] In a fourteenth modality, the present description provides the method of any of the modalities from the twelfth to the thirteenth, in which the non-woven layers are laminated to the multilayer film by means of ultrasonic welding.
    Petition 870160041568, of 08/03/2016, p. 35/54
    29/39 [0104] In a fifteenth modality, the present description provides the method of any of the modalities from the twelfth to the fourteenth, in which the multilayer film has openings but the non-woven layers do not.
    [0105] In a sixteenth modality, the present description provides the method of any of the modalities from the twelfth to the fourteenth, in which the multilayer film and layers of nonwoven have openings.
    [0106] In a seventeenth modality, the present description provides the method of any one of the modalities from the first to the sixteenth, in which the core: coverage of the multilayer film before activation of the multilayer film in the direction transversal to the machine is at least minus 2: 1.
    [0107] In an eighteenth modality, the present description provides the method of any one of the modalities from the first to the sixteenth, in which the core: coverage of the multilayer film before activation of the multilayer film in the transversal direction to the machine is at least minus 3: 1.
    [0108] In a nineteenth modality, the present description provides the method of any of the modalities from the first to the eighteenth, where the elastomeric core layer is a styrenic block copolymer and the covering layers are each a polyolefin.
    [0109] In a twentieth embodiment, the present description provides the method of any of the modalities from the first to the eighteenth, where the elastomeric core layer is a mixture of SIS and polystyrene and the cover layers are a mixture of polypropylene and polyethylene.
    [0110] In a twenty-first modality, the present description provides the method of any one of the modalities from the first to the eighteenth, where the elastomeric core layer is a mixture of SIS and polystyrene and the covering layers are polypropylene.
    [0111] In a twenty-second modality, this description provides the
    Petition 870160041568, of 08/03/2016, p. 36/54
    30/39 method of any of the modalities from the first to the twentieth, in which the force to stretch a sample of the multilayer film of 25.4 mm wide 10% in the direction of the machine is at least 2.5 N, in which the multilayer film was activated in the transversal direction to the machine before stretching.
    [0112] In a twenty-third modality, the present description provides the method of any of the modalities from the first to the twenty-first, in which the force to stretch a sample of the 25.4 mm wide film 10% in the direction of the machine is about 5 N to 10 N, in which the multilayer film was activated in the direction transversal to the machine before stretching.
    [0113] In a twenty-fourth modality, the present description provides the method of any one of the modalities from the first to the twenty-third, in which the reduction in% of stress during the stretch stage of the multilayer film beyond the deformation limit of the layers of coverage in the machine direction is at least 1% when contrasted with the multilayer film that has not been activated in the direction transversal to the machine.
    [0114] In a twenty-fifth modality, the present description provides the method of any one of the modalities from the first to the twenty-third, in which the reduction in% of stress during the stretch stage of the multilayer film beyond the deformation limit of the layers of coverage in the machine direction is at least 5% when contrasted with the multilayer film that has not been activated in the direction transversal to the machine.
    [0115] In a twenty-sixth modality, the present description provides the method of any one of the modalities from the first to the twenty-fifth, in which the laminated blanket is incorporated into an article for personal care.
    [0116] In a twenty-seventh embodiment, the present description provides the method for producing an extensible blanket laminate comprising:
    [0117] provide a multilayer film comprising two layers of cover
    Petition 870160041568, of 08/03/2016, p. 37/54
    31/39 ture and an elastomeric core layer sandwiched between them, [0118] activate the multilayer film in a first direction;
    [0119] subsequently stretching the multilayer film beyond the limit of deformation of the covering layers in a second direction perpendicular to the first direction;
    [0120] laminate a layer of blanket to the multilayer film that is stretched in the second direction; and [0121] recovering the multilayer film to produce an extensible mat laminate.
    [0122] In a twenty-eighth modality, the present description provides the method of the twenty-seventh modality, in which the activation of the multilayer film in the first direction creates a micro-textured surface structure over at least a portion of the multilayer film.
    [0123] In a twenty-ninth modality, the present description provides the method of any of the modalities from the twenty-seventh to the twenty-eighth, in which the activation of the multilayer film in the first direction is done by means of incremental stretching.
    [0124] In a thirtieth modality, the present description provides the method of any of the modalities from the twenty-seventh to the twenty-eighth, in which the activation of the multilayer film in the first direction is done by diverging discs.
    [0125] In a thirty-first modality, this description provides the method of any of the modalities from twenty-seventh to thirtieth, in which the stretch ratio of the multilayer film during activation in the first direction is from 2: 1 to 5: 1.
    [0126] In a thirty-second embodiment, the present description provides the method of any of the modalities from twenty-seventh to thirty-first, in which the multilayer film is stretched in the second direction by vehicle rollers
    Petition 870160041568, of 08/03/2016, p. 38/54
    32/39 differential locity.
    [0127] In a thirty-third modality, the present description provides the method of any of the modalities from the twenty-seventh to the thirty-second, in which the multilayer film is colored and / or contains a printing pattern.
    [0128] In a thirty-fourth modality, the present description provides the method of any of the modalities from the twenty-seventh to the thirty-third, in which the blanket layer is a non-woven layer.
    [0129] In a thirty-fifth embodiment, the present description provides the method of any of the modalities from twenty-seventh to thirty-fourth, additionally providing a second layer of mat that is laminated to the multilayer film while it is stretched in the second direction, in which the multilayer film is sandwiched between the two layers of blanket.
    [0130] In a thirty-sixth modality, the present description provides the method of any of the modalities from the twenty-seventh to the thirty-fifth, in which the layers of the mat are laminated to the multilayer film by means of adhesive bonding, thermosolding, bonding by points, ultrasonic welding or combinations thereof.
    [0131] In a thirty-seventh modality, the present description provides the method of any of the modalities from the twenty-seventh to the thirty-fifth, in which the layers of mat are laminated to the multilayer film by means of ultrasonic welding.
    [0132] In a thirty-eighth modality, the present description provides the method of the thirty-fourth modality, additionally providing a second layer of nonwoven which is laminated to the multilayer film while it is stretched in the second direction, in which the multilayer film is sandwiched between the two layers of nonwoven.
    [0133] In a thirty-ninth modality, the present description provides the method
    Petition 870160041568, of 08/03/2016, p. 39/54
    33/39 of the thirty-eighth modality, in which each of the non-woven layers has a different base weight.
    [0134] In a fortieth modality, the present description provides the method of any of the modalities from the thirty-eighth to the thirty-ninth, in which the non-woven layers are laminated to the multilayer film by means of ultrasonic welding.
    [0135] In a forty-first modality, the present description provides the method of any one of the modalities from thirty-eighth to fortieth, in which the multilayer film has openings, but the non-woven layers do not.
    [0136] In a forty-second modality, the present description provides the method of any of the modalities from the thirty-eighth to the forty-second, in which the multilayer film and the non-woven layers have openings.
    [0137] In a forty-third modality, the present description provides the method of any of the modalities from twenty-seventh to forty-second, in which the ratio between the core layer and the multilayer film cover layer before the activation of the multilayer film in the first direction is at least 2: 1.
    [0138] In a forty-fourth modality, the present description provides the method of any of the modalities from the twenty-seventh to the forty-second, in which the core ratio: multilayer film coverage before activation of the multilayer film in the first direction is at least 3: 1.
    [0139] In a forty-fifth embodiment, the present description provides the method of any of the modalities from twenty-seventh to forty-fourth, in which the elastomeric core layer is a styrenic block copolymer and the cover layers are each a polyolefin.
    [0140] In a forty-sixth modality, this description provides the method of any of the modalities from twenty-seventh to forty-sixth
    Petition 870160041568, of 08/03/2016, p. 40/54
    34/39 fourth, where the elastomeric core layer is a mixture of SIS and polystyrene and the cover layers are a mixture of polypropylene and polyethylene.
    [0141] In a forty-seventh embodiment, the present description provides the method of any of the modalities from twenty-seventh to forty-fourth, in which the elastomeric core layer is a mixture of SIS and polystyrene and the covering layers are polypropylene.
    [0142] In a forty-eighth modality, the present description provides the method of any of the modalities from the twenty-seventh to the forty-seventh, in which the force to stretch a sample of the 25.4 mm wide 10% multilayer film in the second direction is at least 2.5 N, in which the multilayer film was activated in the first direction before stretching.
    [0143] In a forty-ninth modality, the present description provides the method of any of the modalities from twenty-seventh to forty-seventh, in which the force to stretch a sample of 25.4 mm wide 10% multilayer film in the second direction it is about 5 N to 10 N, in which the multilayer film was activated in the first direction before stretching.
    [0144] In a fiftieth modality, the present description provides the method of any of the modalities from twenty-seventh to forty-ninth, in which the reduction in% of stress during the stretch stage of the multilayer film beyond the deformation limit of the layers of coverage in the second direction is at least 1% when contrasted with the multilayer film that was not activated in the first direction.
    [0145] In a fifty-first modality, the present description provides the method of any of the modalities from the twenty-seventh to the forty-ninth, in which the reduction in% of stress during the stretch stage of the multilayer film beyond the layer deformation limit coverage on the second
    Petition 870160041568, of 08/03/2016, p. 41/54
    35/39 direction is at least 5% when contrasted with the multilayer film that was not activated in the first direction.
    [0146] In a fifty-second modality, the present description provides the method of any of the modalities from the twenty-seventh to the fifty-first, in which the first direction is a direction transversal to the machine and the second direction is the direction of the machine.
    [0147] In a fifty-third modality, the present description provides the method of any of the modalities from the twenty-seventh to the fifty-second, in which the extendable blanket laminate is incorporated into a personal care article.
    Examples [0148] The following examples are presented to illustrate some of the advantages of the aforementioned method for producing an extensible blanket laminate and are not designed in any way to limit the scope of the invention.
    Stretch width, stretch and% stretch of elastic films [0149] Strict properties of the multilayer films below were determined while the films were stretched in the machine direction using the apparatus shown in Figure 8. The tightening device 100 included two aluminum cylinders 102 and 104. Each of the cylinders 102 and 104 had a diameter, d, of 110 mm, and were rotatably mounted on bearings fixed to a support so that the separation from center to center, s, of the cylinders was 210 mm.
    [0150] A strip of multilayer film 106 measuring approximately 300 mm and being 150 mm wide (Examples 1 and 2) and 60 mm wide (Example 3) was marked with spaced lines in the transverse direction and spaced 6.35 mm (0 Inch) towards each other towards the machine. One end of film 106 was attached to the first cylinder 102 and the other end of film 106 was similarly connected to the second cylinder 104. The second cylinder 104 was rotated to the point where
    Petition 870160041568, of 08/03/2016, p. 42/54
    36/39 that there was no more slack, or tension exerted on the film. With the first cylinder 102 kept stationary, the film was stretched in a predetermined amount in the direction of the machine by the rotation of the second cylinder 104. For example, a 3X stretch was obtained by turning the second cylinder 104 until the spacer lines were 19 , 05 mm (0.75 inch) towards each other in the machine direction. The "narrowed width" was determined by measuring the width of the stretched film at its narrowest point in the transverse direction. The “tightness” was determined by subtracting the “narrowed width” from the original width of the unstretched film. The "% of stretch" was calculated by dividing the "stretch" by the original width of the unstretched film and multiplying by 100.
    Strength to stretch 10% on PM [0151] The strength to stretch a 10% film sample on DM was determined as follows. A cylinder of film 460, as illustrated in Figure 9a, was conditioned in a room with constant temperature (23 ° ± 2 ° C) and constant humidity (50% ± 5%) for 24 hours. A section model was then used to prepare the 462 film samples that were 25.4 mm wide in the transverse direction and at least 100 mm long (machine direction). As illustrated in Figure 9b, the ends of the film samples 462 were wrapped with masking tape or filament 464 so that the distance L between the inner edges of the connected ends was 50 mm. The ends of the 462 film sample were trapped in the claws of an Instron 5500R tensile tester with constant rate of extension, with the Bluehill tissue testing program. The masking tape or filament 464 reduced the stretching and / or sliding of the ends of the 462 film samples during testing. The 462 film samples were stretched 51 centimeters / minute (20 inches / minute), starting from a useful length of 50 mm and 25.4 mm in width. The samples were pulled to break, and the force measured to the extent of 10% was recorded.
    Petition 870160041568, of 08/03/2016, p. 43/54
    37/39
    Control 1 (M-235 not activated) [0152] M-235 (available from 3M Company of St. Paul, Minnesota, USA) is a non-activated multilayer film with a base weight of 40 g / m 2 . The core layer is a mixture of SIS and polystyrene. The cover layers are a mixture of polypropylene and polyethylene. The thickness ratio between the core layer and the cover layer is 4: 1.
    Example 1 (M-235 activated in DT) [0153] M-235 was stretched in an increasing crosswise direction using an interlacing drawer similar to that described in US Patent No. 5,422,172, “Elastic Laminated Sheet of an Incrementally Stretched Nonwoven Fibrous Web and Elastomeric Film and Method ”(Wu). The drawing machine was configured to provide 224% tension across the multilayer film. The base weight of the activated M-235 was 35 g / m 2 .
    Control 2 (Film not activated) [0154] A three-layer laminated film that has an elastomeric core layer sandwiched between two outer covering layers was produced with conventional coextrusion techniques. The cover layers were 5 microns thick and made of PPH8069 resin (polypropylene available from Total Petrochemicals of Houston, Texas, USA). The core layer was 40 microns thick and made of a mixture of 70% by weight of D1114 (SIS block copolymer available from Kraton in Houston, Texas, USA) and 30% of EMPERA 124N (polystyrene available from Nova Chemicals from Calgary, Alberta Canada The film has a base weight of 55 g / m 2 and a thickness ratio between the core layer and the cover layer of 4: 1
    Example 2 (Film activated in DT) [0155] Control 2 was stretched in the transverse direction using a diverging disc device similar to that illustrated in Figure 1 of US patent No. 5,043,036,
    Petition 870160041568, of 08/03/2016, p. 44/54
    38/39 “Width Stretching Device” (Swenson). The film was stretched 400% of its original width and then allowed to recover completely. The base weight of activated Example 2 was 50 g / m 2 .
    Control 3 (Film not activated) [0156] A three-layer laminated film that has an elastomeric core layer sandwiched between two outer covering layers was produced with conventional coextrusion techniques. The covering layers were made of PPH8069 resin. The core layer was produced from a mixture of 95% by weight of D1114 and 5% of EMPERA 124N. The base weight was 45 g / m 2 . The core / coverage ratio was 4.1: 1.
    Example 3A (Film activated in DT) [0157] Control 3 was stretched in an increasing crosswise direction using the process mentioned in Example 1. The stretcher was configured to give 117% localized elongation. The base weight of activated Example 3A was 42 g / m 2 .
    Example 3B (Film activated in DT) [0158] Control 3 was stretched in an increasing crosswise direction using the process mentioned in Example 1. The stretcher was configured to give 297% localized elongation. The base weight of activated Example 3B was 42 g / m 2 .
    Example 4 [0159] The strength to stretch a 25.4 mm 10% film sample in the DM was determined according to the procedure provided above. The results are shown below.
    [0160] The% of striction was determined for each film using the procedure provided above. Measurements were taken for 2X, 3X, 4X, 5X and 6X stretched films. The average results for each film are also shown below.
    Petition 870160041568, of 08/03/2016, p. 45/54
    39/39
    2X 3X 4X 5X 6XForce to stretch the 25.4 mm wide 10% (N) sample Initial Width (mm) Width (mm) % Narrow Width (mm) % close Width (mm) % close Width (mm) % Narrow Width (mm) % Narrow Control1 6 151.5 110 27% 96 37% 91 40% 86 43% 84 45% Example1 5.9 151.5 119 21% 105 31% 98 35% 94 38% 93 39% Control2 9.8 152 111 27% 96 37% 90 41% 83 45% 83 45% Example2 9.1 152 127 16% 118 22% 113 26% 110 28% IT BROKE Control3 5.4 60 40 33% 34 43% 29 52% 29 52% IT BROKE Example 3A 4.9 59 42 29% 36 39% 32 46% 29 51% 26 56% Example 3B 5.3 59 45 24% 37 37% 33 44% 32 46% 29 51%
    [0161] The modalities described above and illustrated in the figures are presented by way of example only and are not intended to be seen as limiting the concepts and principles of the present invention. As such, an individual skilled in the art will understand that various changes in the elements and their configurations and arrangements are possible, without departing from the character and scope of the present invention.
    [0162] In this way, the invention provides, among other things, a method for producing an extensible blanket laminate. Various features and advantages of the invention are presented in the following claims.
    权利要求:
    Claims (10)
    [1]
    1. Method to produce an extensible blanket laminate CHARACTERIZED for understanding:
    providing a multilayer film comprising two layers of cover and an elastomeric core layer sandwiched between them, in which the multilayer film was activated in the direction transversal to the machine;
    stretching the multilayer film beyond the limit of deformation of the covering layers towards the machine;
    laminating a layer of blanket to the multilayer film while it is stretched towards the machine; and recovering the multilayer film to produce an extensible mat laminate.
    [2]
    2. Method, according to claim 1, CHARACTERIZED by the fact that the multilayer film was activated in the transversal direction to the machine by incremental stretching.
    [3]
    3. Method, according to claim 1, CHARACTERIZED by the fact that the multilayer film was activated in the transversal direction to the machine by divergent discs.
    [4]
    4. Method, according to claim 1, CHARACTERIZED by the fact that the stretch ratio of the multilayer film during activation in the transversal direction to the machine is from 2: 1 to 5: 1.
    [5]
    5. Method according to claim 1, CHARACTERIZED by additionally providing a second layer of mat that is laminated to the multilayer film while it is stretched in the direction of the machine, in which the multilayer film is sandwiched between the two layers of mat.
    [6]
    6. Method, according to claim 1, CHARACTERIZED by the fact of the core: coverage of the multilayer film before the activation of the multi film
    Petition 870160041568, of 08/03/2016, p. 47/54
    2/2 layers in the transverse direction of the machine must be at least 2: 1.
    [7]
    7. Method, according to claim 1, CHARACTERIZED in that the elastomeric core layer is a styrenic block copolymer and the cover layers are each a polyolefin.
    [8]
    8. Method according to claim 1, CHARACTERIZED by the fact that the elastomeric core layer is a mixture of SIS and polystyrene, and the cover layers are a mixture of polypropylene and polyethylene.
    [9]
    9. Method, according to claim 1, CHARACTERIZED by the fact that the elastomeric core layer is a mixture of SIS and polystyrene, and the cover layers are polypropylene.
    [10]
    10. Method, according to claim 1, CHARACTERIZED by the fact that the laminated blanket is incorporated in an article for personal care.
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112015002695A2|2019-10-01|method for producing stretch mat laminates
    JP2017514732A|2017-06-08|Method for making a breathable elastic film laminate and articles obtained therefrom
    US7491666B2|2009-02-17|Latent elastic articles and methods of making thereof
    KR101620648B1|2016-05-12|Elastic composite containing a low strength and lightweight nonwoven facing
    AU2009265213B2|2013-08-22|Elastic composite formed from multiple laminate structures
    BRPI0718486A2|2013-12-03|ACTIVATE ZERO DEFORMATION COMPOSITE LAMINATE
    US10828862B2|2020-11-10|Film with layered segments and apparatus and method for making the same
    CN104703789B|2017-05-03|Laminates and methods of making same
    BRPI0418284B1|2019-11-26|single sided stretch bonded laminate and method for forming the same
    BRPI0618772A2|2011-09-13|alloyed laminate including an elastic member containing an adhesive composition
    BRPI0718941B1|2018-07-24|DENTAL ELASTICITY FILTED COMPOSITE
    BRPI1013519B1|2020-02-04|hooked part of a self-locking fastener, process of obtaining a part with hooks and diaper
    BRPI0908685B1|2019-01-08|method for forming a nonwoven composite having latent elasticity, and nonwoven composite
    BRPI0809367A2|2014-09-16|ASYMMETRIC ELAASTIC FILM NON-FABRIC LAMINATE
    JP5052428B2|2012-10-17|Telescopic sheet
    KR101351205B1|2014-01-14|Elastic-Powered Shrink Laminate
    BR112013020135B1|2020-09-29|METHOD OF MANUFACTURING AN ABSORBENT ARTICLE THAT ADHERES TO THE BODY
    JP5547943B2|2014-07-16|Method for producing stretchable film
    JP6247921B2|2017-12-13|Telescopic sheet
    同族专利:
    公开号 | 公开日
    ES2668481T3|2018-05-18|
    JP2015529581A|2015-10-08|
    JP6235589B2|2017-11-22|
    EP2882592A1|2015-06-17|
    US9469091B2|2016-10-18|
    US20140041786A1|2014-02-13|
    CN104540679B|2017-12-22|
    CN104540679A|2015-04-22|
    PL2882592T3|2018-07-31|
    EP2882592B1|2018-02-28|
    DK2882592T3|2018-05-22|
    EP2882592A4|2016-03-23|
    WO2014025849A1|2014-02-13|
    HUE037090T2|2018-09-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US556501A|1896-03-17|Sewing-machine |
    US1732968A|1928-10-29|1929-10-22|Russell S Dwight|Machine and process for stretching webs|
    US2158087A|1932-07-15|1939-05-16|Paper Service Co|Apparatus for imparting stretchability to webs|
    US3220056A|1959-11-27|1965-11-30|Richard R Walton|Treatment of sheet materials|
    US3338992A|1959-12-15|1967-08-29|Du Pont|Process for forming non-woven filamentary structures from fiber-forming synthetic organic polymers|
    DK97537C|1961-06-09|1963-12-09|Ole-Bendt Rasmussen|Procedure for stretching in the cold state of an orientable foil material.|
    NL136313C|1962-01-29|
    US3502763A|1962-02-03|1970-03-24|Freudenberg Carl Kg|Process of producing non-woven fabric fleece|
    NL294912A|1962-07-06|
    US3459832A|1965-09-24|1969-08-05|Monsanto Co|Crystalline polystyrene having activity as a polymerization catalyst|
    US3466358A|1966-05-31|1969-09-09|Mueller Paul A|Method of making filtering material for cigarettes|
    US3341394A|1966-12-21|1967-09-12|Du Pont|Sheets of randomly distributed continuous filaments|
    US3542615A|1967-06-16|1970-11-24|Monsanto Co|Process for producing a nylon non-woven fabric|
    US3528145A|1968-10-31|1970-09-15|Cluett Peabody & Co Inc|Split detector for fabrics undergoing incremental lateral stretching|
    DE1950669C3|1969-10-08|1982-05-13|Metallgesellschaft Ag, 6000 Frankfurt|Process for the manufacture of nonwovens|
    US3700633A|1971-05-05|1972-10-24|Shell Oil Co|Selectively hydrogenated block copolymers|
    CH526276A|1971-05-13|1972-08-15|Celfil Co|Method and device for the production of filter material webs for tobacco product filters, in particular cigarette filters|
    US3844869A|1972-12-20|1974-10-29|Crompton & Knowles Corp|Apparatus for ultrasonic welding of sheet materials|
    DE2503775A1|1975-01-30|1976-08-05|Reifenhaeuser Kg|Transverse stretching of thermoplastics foils - by orthogonally corrugating sections of the foil|
    US4116892A|1975-03-31|1978-09-26|Biax-Fiberfilm Corporation|Process for stretching incremental portions of an orientable thermoplastic substrate and product thereof|
    US4144008A|1975-03-31|1979-03-13|Biax-Fiberfilm Corporation|Apparatus for stretching a tubularly-formed sheet of thermoplastic material|
    US4223059A|1975-03-31|1980-09-16|Biax Fiberfilm Corporation|Process and product thereof for stretching a non-woven web of an orientable polymeric fiber|
    GB1546765A|1975-05-23|1979-05-31|Mercer Ltd F B|Stretching webs of sheet material|
    US4336638A|1975-05-23|1982-06-29|Netlon Limited|Apparatus for stretching plastic webs|
    US4209563A|1975-06-06|1980-06-24|The Procter & Gamble Company|Method for making random laid bonded continuous filament cloth|
    US4156673A|1976-02-10|1979-05-29|Shell Oil Company|Hydrogenated star-shaped polymer|
    GB1575507A|1976-02-10|1980-09-24|Shell Int Research|Hydrogenated star-shaped polymers and oil compositions thereof|
    US4153664A|1976-07-30|1979-05-08|Sabee Reinhardt N|Process for pattern drawing of webs|
    US4368565A|1978-03-28|1983-01-18|Biax-Fiberfilm Corporation|Grooved roller assembly for laterally stretching film|
    US4251585A|1978-05-01|1981-02-17|Biax Fiberfilm Corporation|Product and process for stretching a tubularly formed sheet of orientable thermoplastic material|
    US4259399A|1978-08-31|1981-03-31|Burlington Industries, Inc.|Ultrasonic nonwoven bonding|
    US4223063A|1979-03-02|1980-09-16|Sabee Reinhardt N|Pattern drawing of webs, and product produced thereby|
    US4340563A|1980-05-05|1982-07-20|Kimberly-Clark Corporation|Method for forming nonwoven webs|
    US4464815A|1980-12-31|1984-08-14|Mobil Oil Corporation|Multidirectional orientation apparatus|
    US4374690A|1980-12-31|1983-02-22|Mobil Oil Corporation|Multidirectionally oriented films|
    US4475971A|1981-12-30|1984-10-09|Mobil Oil Corporation|Method for forming strong cross-laminated films|
    US4400227A|1982-01-26|1983-08-23|The Procter & Gamble Company|Dynamic ultrasonic laminating apparatus having post-bonding pressure roll, and concomitant method|
    US4404052A|1982-01-26|1983-09-13|The Procter & Gamble Company|Dynamic laminating method and apparatus for ultrasonically bonding juxtaposed webs|
    US4517714A|1982-07-23|1985-05-21|The Procter & Gamble Company|Nonwoven fabric barrier layer|
    US4618384A|1983-09-09|1986-10-21|Sabee Reinhardt N|Method for applying an elastic band to diapers|
    US4781962A|1986-09-09|1988-11-01|Kimberly-Clark Corporation|Composite cover material for absorbent articles and the like|
    US4842596A|1986-12-31|1989-06-27|Kimberly-Clark Corporation|Method of making a breathable elastic fabric composite and personal article incorporating same|
    US4834741A|1987-04-27|1989-05-30|Tuff Spun Products, Inc.|Diaper with waist band elastic|
    US4968313A|1987-04-27|1990-11-06|Sabee Reinhardt N|Diaper with waist band elastic|
    US4847134A|1987-12-22|1989-07-11|Kimberly-Clark Corporation|Stretchable absorbent undergarment|
    US5501679A|1989-11-17|1996-03-26|Minnesota Mining And Manufacturing Company|Elastomeric laminates with microtextured skin layers|
    US5114781A|1989-12-15|1992-05-19|Kimberly-Clark Corporation|Multi-direction stretch composite elastic material including a reversibly necked material|
    US5096532A|1990-01-10|1992-03-17|Kimberly-Clark Corporation|Ultrasonic rotary horn|
    US5354597A|1990-03-30|1994-10-11|Minnesota Mining And Manufacturing Company|Elastomeric tapes with microtextured skin layers|
    US5429856A|1990-03-30|1995-07-04|Minnesota Mining And Manufacturing Company|Composite materials and process|
    US5344691A|1990-03-30|1994-09-06|Minnesota Mining And Manufacturing Company|Spatially modified elastic laminates|
    CA2074255C|1990-03-30|2001-01-02|Dennis L. Krueger|Composite materials and process|
    US5043036A|1990-03-30|1991-08-27|Minnesota Mining And Manufacturing Company|Width stretching device|
    US5773374A|1995-04-24|1998-06-30|Wood; Leigh E.|Composite materials and process|
    US5110403A|1990-05-18|1992-05-05|Kimberly-Clark Corporation|High efficiency ultrasonic rotary horn|
    US5143679A|1991-02-28|1992-09-01|The Procter & Gamble Company|Method for sequentially stretching zero strain stretch laminate web to impart elasticity thereto without rupturing the web|
    US6476289B1|1991-02-28|2002-11-05|The Procter & Gamble Company|Garment having elastomeric laminate|
    US5167897A|1991-02-28|1992-12-01|The Procter & Gamble Company|Method for incrementally stretching a zero strain stretch laminate web to impart elasticity thereto|
    US5156793A|1991-02-28|1992-10-20|The Procter & Gamble Company|Method for incrementally stretching zero strain stretch laminate web in a non-uniform manner to impart a varying degree of elasticity thereto|
    US5196247A|1991-03-01|1993-03-23|Clopay Corporation|Compostable polymeric composite sheet and method of making or composting same|
    US5221274A|1991-06-13|1993-06-22|The Procter & Gamble Company|Absorbent article with dynamic elastic waist feature having a predisposed resilient flexural hinge|
    US5196000A|1991-06-13|1993-03-23|The Proctor & Gamble Company|Absorbent article with dynamic elastic waist feature comprising an expansive tummy panel|
    US5151092A|1991-06-13|1992-09-29|The Procter & Gamble Company|Absorbent article with dynamic elastic waist feature having a predisposed resilient flexural hinge|
    SE508409C2|1992-03-04|1998-10-05|Sca Hygiene Prod Ab|Absorbent diaper pants|
    US5376430A|1992-06-19|1994-12-27|Minnesota Mining And Manufacturing Company|Elastic film laminate|
    US5366782A|1992-08-25|1994-11-22|The Procter & Gamble Company|Polymeric web having deformed sections which provide a substantially increased elasticity to the web|
    CA2097630A1|1992-12-29|1994-06-30|Ann Louise Mccormack|Stretch-pillowed, bulked laminate|
    JPH06293067A|1993-04-09|1994-10-21|Nitto Denko Corp|Composite sheet|
    US5422172A|1993-08-11|1995-06-06|Clopay Plastic Products Company, Inc.|Elastic laminated sheet of an incrementally stretched nonwoven fibrous web and elastomeric film and method|
    CA2150333A1|1994-05-26|1995-11-27|W. Andrew Coslett|Unidirectionally stretchable elastomeric trilaminate and method for its manufacture|
    US5567501A|1994-06-15|1996-10-22|International Paper Company|Thermally apertured nonwoven product|
    AU4509296A|1994-12-16|1996-07-03|Procter & Gamble Company, The|Absorbent article with fit enhancement system|
    US5851935A|1996-08-29|1998-12-22|Bba Nonwovens Simpsonville, Inc.|Cross-directionally stretchable elastomeric fabric laminated by thermal spot bonding|
    US5817199A|1996-12-20|1998-10-06|Kimberly-Clark Worldwide, Inc.|Methods and apparatus for a full width ultrasonic bonding device|
    US6057024A|1997-10-31|2000-05-02|Kimberly-Clark Worldwide, Inc.|Composite elastic material with ribbon-shaped filaments|
    US6159584A|1998-03-27|2000-12-12|3M Innovative Properties Company|Elastic tab laminate|
    US6217563B1|1999-02-12|2001-04-17|Kimberly-Clark Worldwide, Inc.|Three-dimensional, inward leg gather disposable garment|
    US6461457B1|1999-06-30|2002-10-08|Kimberly-Clark Worldwide, Inc.|Dimensionally stable, breathable, stretch-thinned, elastic films|
    EP1104668A1|1999-12-01|2001-06-06|The Procter & Gamble Company|Apertured elastic member|
    US6716498B2|1999-12-21|2004-04-06|The Procter & Gamble Company|Applications for substance encapsulating laminate web|
    US6884494B1|1999-12-21|2005-04-26|The Procter & Gamble Company|Laminate web|
    US6808791B2|1999-12-21|2004-10-26|The Procter & Gamble Company|Applications for laminate web|
    US6878433B2|1999-12-21|2005-04-12|The Procter & Gamble Company|Applications for laminate web|
    US6730622B2|1999-12-21|2004-05-04|The Procter & Gamble Company|Electrical cable|
    MXPA02005484A|1999-12-21|2002-11-29|Procter & Gamble|Laminate web comprising an apertured layer and method for manufacture thereof.|
    US20020022426A1|1999-12-21|2002-02-21|The Procter & Gamble Company|Applications for elastic laminate web|
    JP2003517949A|1999-12-21|2003-06-03|ザ、プロクター、エンド、ギャンブル、カンパニー|Disposable articles having laminated webs with holes|
    CZ20022114A3|1999-12-21|2003-02-12|The Procter & Gamble Company|Disposable article containing perforated laminated fabric|
    US20020039867A1|1999-12-21|2002-04-04|The Procter & Gamble Company|Substance encapsulating laminate web|
    US6830800B2|1999-12-21|2004-12-14|The Procter & Gamble Company|Elastic laminate web|
    US6863960B2|1999-12-21|2005-03-08|The Procter & Gamble Company|User-activatible substance delivery system|
    US6472084B1|2000-02-15|2002-10-29|Tredegar Film Products Corporation|Tear-resistant low set elastic film and method of making|
    US6572595B1|2000-05-30|2003-06-03|Associated Hygienic Products|Disposable absorbent garment such as a diaper or training pants and a process of making the same|
    US6986932B2|2001-07-30|2006-01-17|The Procter & Gamble Company|Multi-layer wiping device|
    US6949283B2|2001-12-19|2005-09-27|3M Innovative Properties Company|Polymeric coextruded multilayer articles|
    DE10202333B4|2002-01-23|2006-04-06|Nordenia Deutschland Gronau Gmbh|Process for producing an elastic, air-permeable composite film|
    TWI227196B|2002-02-22|2005-02-01|Clopay Plastic Prod Co|Film, laminated sheet and methods of making same|
    DE10210415C1|2002-03-09|2003-09-25|Nordenia Deutschland Gronau|Process for producing an air-permeable composite film with a textile surface, which has elastic and non-elastic areas|
    US7674733B2|2002-03-22|2010-03-09|Clopay Plastic Products Company, Inc.|Breathable and elastic composite materials and methods|
    US7749211B2|2002-10-18|2010-07-06|Kimberly-Clark Worldwide, Inc.|Body conforming absorbent garment and methods for the use and manufacture thereof|
    US7320948B2|2002-12-20|2008-01-22|Kimberly-Clark Worldwide, Inc.|Extensible laminate having improved stretch properties and method for making same|
    US7604624B2|2003-05-30|2009-10-20|Kimberly-Clark Worldwide, Inc.|Disposable absorbent article with overlapping absorbent assembly secured to front and back panels|
    US7897078B2|2004-03-09|2011-03-01|3M Innovative Properties Company|Methods of manufacturing a stretched mechanical fastening web laminate|
    US8182456B2|2004-03-29|2012-05-22|The Procter & Gamble Company|Disposable absorbent articles with components having both plastic and elastic properties|
    CA2569109A1|2004-06-22|2005-12-29|Sca Hygiene Products Ab|Absorbent article comprising an elastic laminate|
    US20060169387A1|2005-01-03|2006-08-03|Nayar Satinder K|Elastic laminate material, and method of making|
    CA2598504A1|2005-03-02|2006-09-08|Sca Hygiene Products Ab|Underwear article comprising an elastic laminate|
    WO2007061486A1|2005-11-22|2007-05-31|Pliant Corporation|Elastic laminates|
    DE602006009560D1|2005-12-22|2009-11-12|Dow Global Technologies Inc|MIXTURES OF STYRENE BLOCK COPOLYMERS AND PROPYLENE-ALPHA OLEFIN COPOLYMERS|
    CN101077643A|2006-04-10|2007-11-28|屈德加薄膜产品股份有限公司|Elastic film laminates prepared by multiple stretching steps|
    US20070237924A1|2006-04-10|2007-10-11|Tredegar Film Products Corp.|Elastic laminates prepared by multiple stretching steps|
    MX2008014154A|2006-05-12|2008-11-18|Sca Hygiene Prod Ab|A pant-type absorbent article and a method for producing pant-type absorbent articles.|
    CN101460123A|2006-06-07|2009-06-17|宝洁公司|Biaxially stretchable outer cover for an absorbent article|
    US20070298262A1|2006-06-22|2007-12-27|Tredegar Film Products Corporation|Elastic film exhibiting low tensile force properties in the machine direction|
    US7803244B2|2006-08-31|2010-09-28|Kimberly-Clark Worldwide, Inc.|Nonwoven composite containing an apertured elastic film|
    EP1900512A1|2006-09-15|2008-03-19|3M Innovative Properties Company|An activatable zero strain composite laminate|
    CA2670412C|2006-11-22|2014-06-03|Pliant Corporation|Stretchable elastic laminate having increased cd elongation zones and method of production|
    EP2086485B1|2006-11-30|2013-04-03|Pliant, LLC|Md stretch laminate having cd stretch|
    TWI411532B|2007-01-25|2013-10-11|Clopay Plastic Prod Co|Elastomeric laminate materials that do not require mechanical activation|
    US20090047855A1|2007-08-16|2009-02-19|3M Innovative Properties Company|Stretchable elastic nonwoven laminates|
    WO2009032865A1|2007-09-07|2009-03-12|Invista Technologies S.A.R.L.|Multilayer stretch nonwoven fabric composites|
    AT541907T|2008-01-22|2012-02-15|Tesa Se|CARRIER FOIL, ESPECIALLY FOR A TAPE AND USE THEREOF|
    US8445744B2|2008-01-24|2013-05-21|The Procter & Gamble Company|Extrusion bonded laminates for absorbent articles|
    US8168853B2|2008-01-24|2012-05-01|The Proctor & Gamble Company|Extrusion bonded laminates for absorbent articles|
    US8709191B2|2008-05-15|2014-04-29|Kimberly-Clark Worldwide, Inc.|Latent elastic composite formed from a multi-layered film|
    US8096667B2|2008-05-16|2012-01-17|3M Innovative Properties Company|Light control film with off-axis visible indicia|
    EP2158888A1|2008-09-01|2010-03-03|3M Innovative Properties Company|Activatable precursor of a composite laminate web and elastic composite laminate web|
    WO2010050867A1|2008-11-03|2010-05-06|Sca Hygiene Products Ab|Method for producing pant-type articles having a chassis structure and pant-type articles produced according to the method|
    US20100215923A1|2009-02-24|2010-08-26|Tredegar Film Products Corporation|Elastic film laminates with tapered point bonds|
    FR2943356B1|2009-03-23|2011-07-08|Aplix Sa|ELASTIC AND NON-WOVEN REINFORCED LAMINATE|
    EP2471652A1|2010-12-28|2012-07-04|Nordenia Technologies GmbH|Elastomer laminate and method for its production|JP6169786B2|2013-05-03|2017-07-26|ザ プロクター アンド ギャンブル カンパニー|Absorbent article comprising an extensible laminate|
    WO2015191942A1|2014-06-12|2015-12-17|Dow Global Technologies Llc|Multilayer films, and articles made therefrom|
    GB2532027A|2014-11-05|2016-05-11|Concepts For Success |Selective machine-directional stretching of a precombined elastic web of varying web width by speed differential stretching|
    US10239295B2|2015-01-09|2019-03-26|Berry Film Products Company, Inc.|Elastomeric films having increased tear resistance|
    JP6718272B2|2015-04-15|2020-07-08|日東電工株式会社|Stretchable laminate and article containing the same|
    WO2016167246A1|2015-04-15|2016-10-20|日東電工株式会社|Expanding/contracting laminate and product including same|
    WO2017034030A1|2015-08-27|2017-03-02|スリーエム イノベイティブ プロパティズ カンパニー|Stretching material, stretchable member, and garment product|
    JP6288564B2|2015-11-10|2018-03-07|大王製紙株式会社|Absorbent article and manufacturing method thereof|
    JP6219422B2|2016-02-23|2017-10-25|大王製紙株式会社|Absorbent article and manufacturing method thereof|
    JP6889984B2|2016-03-15|2021-06-18|日東電工株式会社|Elastic laminate and articles containing it|
    WO2018022587A1|2016-07-29|2018-02-01|Kimberly-Clark Worldwide, Inc.|Patterned tissue product|
    IT201600080979A1|2016-08-02|2018-02-02|Fameccanica Data Spa|PROCEDURE FOR THE PRODUCTION OF A COMPOSITE ELASTIC TAPE|
    US10568776B2|2016-08-12|2020-02-25|The Procter & Gamble Company|Method and apparatus for assembling absorbent articles|
    CN114010398A|2017-03-27|2022-02-08|宝洁公司|Elastomeric laminate with crimped spunbond web|
    JP2020531641A|2017-08-25|2020-11-05|スリーエム イノベイティブ プロパティズ カンパニー|Adhesive articles that allow undamaged removal|
    EP3672795A4|2017-08-25|2021-05-12|3M Innovative Properties Company|Adhesive articles permitting damage free removal|
    JP6514744B2|2017-08-29|2019-05-15|大王製紙株式会社|Absorbent article and method of manufacturing the same|
    JP2020163758A|2019-03-29|2020-10-08|スリーエム イノベイティブ プロパティズ カンパニー|Elastic laminated sheet|
    EP3766468A1|2019-07-19|2021-01-20|3M Innovative Properties Company|Closure tape tab with an inner tab portion having mechanical fastening elements|
    法律状态:
    2019-10-22| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-11-26| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-06-02| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-09-15| B11D| Dismissal acc. art. 38, par 2 of ipl - failure to pay fee after grant in time|
    2021-10-05| B350| Update of information on the portal [chapter 15.35 patent gazette]|
    优先权:
    申请号 | 申请日 | 专利标题
    US13/569,563|US9469091B2|2012-08-08|2012-08-08|Method of making extensible web laminates|
    PCT/US2013/053898|WO2014025849A1|2012-08-08|2013-08-07|Method of making extensible web laminates|
    [返回顶部]