• 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:
    hygienic product and method for producing a hygienic product. The present invention relates to an absorbent product comprising an odor control material wherein the odor control material has a longitudinal direction (y), a transverse direction (x) and a thickness direction (z). the odor control material (1) has a longitudinal direction (y), a transverse direction (x) and a thickness direction (z), wherein the odor control material (1) comprises a first vehicle material ( 2) wherein a plurality of odor control particles (3) are bonded to at least one surface of the first carrier material by a binding substance (4), the first carrier material (2) being in a non-declining condition. expanded, has a plurality of transverse slits (6) and by the fact that the first vehicle material (2) in an expanded condition in the longitudinal direction (y) has a plurality of openings (7), and that the first vehicle material (2) is fixed in the expanded condition in the sanitary product whereby the odor control material (1) is in the form of a lattice structure.
    公开号:BR112016013254B1
    申请号:R112016013254-8
    申请日:2013-12-20
    公开日:2021-06-29
    发明作者:Ulla Forsgren Brusk；Pia Kalentun；Barbro MOBERG；Frida Ryttsén；Chatrine Stridfeldt；Birgitta Yhlen
    申请人:Essity Hygiene And Health Aktiebolag；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION
    [001] The present invention relates to an absorbent product comprising an odor control material in which the odor control material has a longitudinal direction (Y), a transverse direction (X) and a thickness direction (Z ). The odor control material comprises a first carrier material with a plurality of odor control particles bonded to the first carrier material by a binder substance. BACKGROUND OF THE INVENTION
    [002] Odor prevention, in connection with the use of absorbent products such as incontinence products, is an important comfort factor for consumers. Body fluid, such as urine, is collected and stored in absorbent products and odors can easily arise. It is important for the user that these odors do not spread into the environment. The user needs to feel safe when using absorbent products both with regard to leakage and with regard to controlling or preventing odor.
    [003] In the field of absorbent products, several different solutions are used to prevent odors. For example, odors can be masked by the use of perfumes or deodorizing compounds. Odors can also be adsorbed or absorbed by particles that have a large surface area, such as particulate materials based on activated carbon, zeolite and starch. Acidic and/or alkaline odors can be neutralized by the use of substances such as sodium bicarbonate and/or citric acid. For bacteria inhibition, substances that have a low pH or metallic salts can be used. Consequently, different odor control agents can be used to prevent odors in different ways.
    [004] It has been proven that odor control agents in particle form, such as materials based on activated carbon, zeolite and starch, have excellent odor adsorption characteristics due to the large surface area of the particles. However, there are some disadvantages related to the use of such odor control agents which may be in a powder form, for example such powders are very difficult to handle in dry processes due to splash problems. Dusts can contaminate both process equipment and products.
    [005] In the prior art, attempts have been made to reduce powder spattering problems such as, for example, those disclosed by document no. EP0392528, in which particles of an odor control agent are attached to a fibrous base web, such as a paper or non-woven web. The porous base web is immersed in a saturated aqueous slurry that contains the odor absorbing particles and a binding agent, along with a surfactant. Excess aqueous slurry is then squeezed from the web and the web is dried.
    [006] It can also be difficult to disperse particulate-form odor control agents evenly in absorbent products. For example, moisture in the atmosphere can cause particles to form agglomerates, and this can cause uneven distribution in the production process and, consequently, in final products.
    [007] Since certain odor adsorption particles, such as, for example, activated carbon particles, are hydrophobic, it is also important that these particles do not affect the absorption properties in the product.
    [008] Therefore, there is still a need to improve the handling of odor control agents in particulate form during the production of absorbent products and also a need to ensure that odor adsorption/absorption properties, as well as odor adsorption properties, absorption of liquid, whether maintained or improved. DESCRIPTION OF THE INVENTION
    [009] An objective of the present invention is to provide an absorbent product that has an effective odor control system. A further object of the present invention is to improve the distribution of odor control particles in the final products so that an effective odor control system can be obtained without affecting the absorption properties in the final product. A further objective of the present invention is to improve the handling of odor control particles in the production process.
    [010] The goals are achieved through a hygienic product comprising an odor control material that has a longitudinal direction (Y), a transverse direction (X) and a thickness direction (Z), in which the control material The odor control comprises a first carrier material wherein a plurality of odor control particles are bonded to the first carrier material by a binder substance. Furthermore, the first vehicle material has, in an unexpanded condition, a plurality of transverse slits and, in an expanded condition in the longitudinal (Y) direction, a plurality of openings. The first vehicle material is fixed in the expanded condition in the sanitary product whereby the odor control material is in the form of a lattice structure. Openings in the material allow liquid to pass through the material and thus a hydrophobic character of the odor control particles cannot hinder liquid ingress.
    [011] Since the carrier material is slit and secured in an expanded (stretched) position so that the slits form openings, the material is permeable to liquids. In this way it is possible to have the odor control material in close contact with the area where the liquid enters the toilet product and it is possible for the odor control particles to immediately capture/adsorb odor compounds. The odor control material can cover the humidification area of the sanitary product and the odor control material will facilitate the liquid to pass through. An alternative way to create openings in a material would be to punch/drill. However, a slot cutting method is advantageous over punching/drilling as no material is cut out of the web. This saves money due to less material waste and also improves handling in the production process by avoiding handling a bunch of small pieces that comprise odor control particles. These small pieces of material can otherwise contaminate both the process equipment and the final product.
    [012] The odor control particles can be a particulate odor control agent based on activated carbon, zeolite or starch. Activated carbon is a hydrophobic odor control agent, through which it can adsorb hydrophobic odorous substances while aqueous solutions, such as urine, will pass through the activated carbon particles without liquid absorption. Activated charcoal can be produced from a wide variety of source materials such as hard coal, coconut shells and wood. The material is often carbonized to reach coal, followed by chemical activation or activation by high temperature water vapor. This produces an activated carbon with an extensive pore network and a high surface area.
    [013] Activated carbon particles can have a particle size of about 0.1 to 1000 µm and is preferably from about 1 µm to about 250 µm, measured according to ASTM D5158. Particles that are smaller than 0.1 µm in size are often difficult to handle. On the other hand, particles that are larger than 250 µm may feel uncomfortable or uneven in the final product, such as the absorbent product. The specific surface area of the particles determines the area of the substance that is available for binding and/or interacting with other substances. The specific surface area is defined as the BET surface area. BET theory describes the adsorption of gas molecules to a solid surface and is based on an assumption of energy for first layer adsorption. By measuring the gas volume after desorption, the specific surface area is calculated. A technician in the subject would know conventional instruments to perform the measurement.
    [014] In general, the BET specific surface area of the water-insoluble activated carbon particles used in the present invention can be from 100 m2/g to 2000 m2/g and is preferably greater than 500 m2/g. The specific surface area depends on the physical properties of the particles.
    [015] According to one embodiment, the first carrier material is fixed in the expanded condition on the sanitary product so that the odor control material covers from 5 to 100% of the total surface area of the absorbent product in its horizontal plane. According to another embodiment, the odor control material can cover from 5 to 60% of the total surface area of the absorbent product in its horizontal plane. By measuring the surface area of the absorbent product covered by the odor control material, the total surface area of the odor control material in its expanded condition was measured, which includes the area for the openings. Figure 2A shows an example of an absorbent product in accordance with an embodiment of the invention, viewed from the side facing the user when used. The total surface of the absorbent product in its horizontal plane is for the absorbent product illustrated in Figure 2A the same as the total surface seen from the side that will face the user when used.
    [016] If the sanitary product is an absorbent product, such as an incontinence pad or a sanitary towel, the odor control material may at least be located in the fluid receiving area. If the absorbent product is instead a diaper suitable for also absorbing soft faeces, the odor control material can at least be located in the fecal reception area, which is the area immediately surrounding the point of the absorbent product that is positioned opposite the user's anus. The fecal reception area is located at the rear portion of the diaper. Thus, in a diaper, the odor control material can be positioned so that it is only located in the back portion or in both the back portion and the front portion.
    [017] The first carrier material can be any type of material, such as a foam material or a fibrous material, as well as a film material. If the first vehicle material is a thin structure, for example a film or a non-woven material, the edges of the slits will be lifted as the material is stretched transversely to the longitudinal direction of the slits so that the material transforms from a two-dimensional structure for a three-dimensional network structure in which the widened slits form rhomboid openings. Since the edges of the openings will be located on different planes, an open structure is obtained in which a free volume is present. Due to the free volume, the material may have the ability to accommodate and temporarily hold a relatively large volume of liquid. The openings therefore maintain a wide open area which is an advantage for liquid inlet and also for the temporary holding capacity.
    [018] An advantage with a foam as the first vehicle material is that the foam can be flexible and resilient and therefore it is comfortable to use such material close to the body.
    [019] According to one embodiment, the slits are provided in alternating rows extending in the transverse (X) direction, which have a slit length A of 5 to 20 mm and a slit distance B between the ends of two slits mutually sequential in the alternating row of 0.4 to 0.6 times the slit length, and a row C distance between two adjacent rows of 0.4 to 0.6 times the slit length. Slot length A divided by row distance C can be less than or equal to 10.
    [020] According to one embodiment, the binding substance is soluble in water, so it dissolves at least partially when in contact with an aqueous solution. By water-soluble binder is meant a binder which has the ability to dissolve when in contact with water or an aqueous solution such as urine or blood. The water-soluble binder substance dissolves in part or completely when it comes into contact with aqueous solutions so that water-insoluble odor control particles adhered to the carrier material with the water-soluble binder substance are released from the binder substance and the carrier material. In this way, water-insoluble odor control particles can more easily come into contact with odorous substances. In such a way, the entire surface area of the activated carbon particles is used for odor adsorption. According to one embodiment, the water-soluble binder substance has a molecular weight of 40 kDa or less.
    [021] The water-soluble binder may comprise a hydrophilic polymer such as polyvinylpyrrolidone, polyacrylic polyethylene oxide, starch or starch derivatives.
    [022] The water-soluble binder may comprise hydrophilic low molecular weight compounds such as monosaccharides such as glucose or the like, disaccharides such as sucrose or the like, sugar alcohols such as xylitol or the like, or polyols such as polyethylene glycol or the like.
    [023] The water-soluble binder may also comprise a mixture of a hydrophilic polymer such as polyvinylpyrrolidone, polyacrylic polyethylene oxide, starch or starch derivatives, and low molecular weight components such as monosaccharides such as glucose or the like, disaccharides , such as sucrose or the like, sugar alcohols such as xylitol or the like, or polyols such as polyethylene glycol or the like.
    [024] The sanitary product may also comprise an additive, such as a plasticizer, a stabilizer, a dispersibility improving agent, a pH regulating agent, an antimicrobial substance, a perfume and/or a flavoring substance or a mixture of the same.
    [025] According to one embodiment, the sanitary product is an absorbent product, such as a diaper, a sanitary towel, an incontinence protector or a daily protector. The absorbent product may comprise a liquid-permeable topsheet, a liquid-impermeable backsheet and an absorbent core enclosed between the topsheet and the backsheet, and an odor control material located between the topsheet and the backsheet. the absorbent core.
    [026] According to one embodiment, the first vehicle has a first surface facing the liquid permeable topsheet and an opposite second surface facing the absorbent core, wherein the odor control particles are attached to the second surface which faces the absorbent core. By such arrangement, the surface of the carrier material with odor control particles adhered thereto faces the absorbent core and the surface which does not have odor control particles adhered thereto faces the topsheet. If the odor control particles are activated carbon particles, the dark color of the carbon particles may not show through the carrier material if the carrier material is relatively opaque. An example of a vehicle material that can be relatively opaque is a foam material.
    [027] According to yet another embodiment, the first vehicle material is laminated to a second vehicle material in its expanded condition so that the first vehicle material is attached to the second vehicle material in its expanded condition in the form of a lattice structure with openings. An advantage in laminating a second vehicle material to the first vehicle material is that the first vehicle material is locked in its expanded condition after being cut into slits so that the openings formed during stretching are fixed in their open condition. The second vehicle material is, for example, a non-woven material. The second carrier material can face the topsheet and the first carrier material with the carbon particles attached thereto can face the absorbent core. It is also possible that the second carrier material in the odor control material is the top sheet, or, if the top sheet comprises more than one layer, at least one layer of the top sheet.
    [028] Examples of absorbent products are diapers, incontinence protectors, sanitary towels, daily protectors. In addition, non-liquid absorbing products such as hygienic flatulence products are encompassed by this invention. The sanitary product can also be a liner comprising the odor control material. The lining can be absorbent or non-absorbent.
    [029] A way of producing an odor control material of the invention comprises the following steps: - providing a first vehicle material having a first surface and a second opposite surface; - applying a binder substance comprising activated carbon particles to at least one surface of the first carrier material, whereby the carbon particles are adhered to the first carrier material via the binder substance; - wherein said first vehicle material has a longitudinal direction, a transverse direction and a thickness direction; - providing a plurality of transverse slits in said first vehicle material, each slit extending through the material in said thickness direction; - expanding said first vehicle material in said longitudinal direction so that slits are opened in openings to provide liquid inlet, through which said expansion provides an expanded first vehicle material in the form of a lattice structure; - providing a second vehicle material to secure said first expanded web so that it is maintained in an expanded condition and laminate said first expanded vehicle material and said second vehicle material, through which the first vehicle material is fixed in an expanded condition with respect to said second vehicle material and through which a laminated web of an odor control material is formed; - and cutting said odor control material along at least one cut line, through which said piece of material is produced so that it comprises a plurality of said openings.
    [030] Thereafter, the odor control material is provided to the absorbent core so that the first carrier material of the odor control material is located towards the absorbent core and the second carrier material is located towards the a liquid permeable top sheet. It is also possible that the second carrier material is the top sheet, or, if the top sheet comprises more than one layer, it is one layer of the top sheet. BRIEF DESCRIPTION OF THE FIGURES
    [031] Figure 1A shows a top view of an odor control material according to an embodiment of the invention.
    [032] Figure 1B shows a top view of a portion of an example of a first vehicle material after it has been split.
    [033] Figure 1C shows a top view of the first vehicle material according to Figure 1B after it has been expanded, that is, after the slits have been opened into openings.
    [034] Figure 2A shows an example of an absorbent product according to an embodiment of the invention, observed from the side that will be facing the user when it is used.
    [035] Figure 2B shows a cross-sectional view of the absorbent product of Figure 2A, along line II-II. DESCRIPTION OF ACHIEVEMENTS OF THE INVENTION
    [036] The invention will now be described by way of examples with reference to Figures 1A to C and Figures 2A and B. Figure 1A shows an odor control material 1 according to an embodiment of the invention. Odor control material 1 has a longitudinal direction (Y), a transverse direction (X) and a thickness direction (Z). The odor control material 1 has a first carrier material 2 with a plurality of odor control particles 3 bonded to that first carrier material 2 by a binder substance 4. The odor control particles 3 may be an odor control agent. particulate odor control based on activated carbon, zeolite or starch. The first vehicle material 2 has a plurality of transverse slits 6 and the first vehicle material 2 is expanded in the longitudinal direction (Y) so that the slits 6 are opened in openings 7 such that the first vehicle material 2 with the plurality of odor control particles 3 is in the form of a lattice structure. The odor control material 1 in Figure 1A also has a second vehicle material 5 laminated to the first vehicle material 2 in its expanded condition so that the first vehicle material 2 is affixed to the second vehicle material 5 in its expanded condition. in the form of a lattice structure with openings.
    [037] Figure 1B shows a top view of a portion of the first vehicle material 2 after provision of transverse slits 6. The slits 6 in Figure 1B are straight, but can have any suitable shape, such as, for example, shape wave. The slits 6 are provided in alternating rows extending in the transverse (X) direction, which have a slit length A of 5 to 20 mm and a slit distance B between the ends of two mutually sequential slits in the alternating row of 0, 4 to 0.6 times the length of slot A, and a distance of row C between two adjacent rows of 0.4 to 0.6 times the length of slot A. As shown in Figure 1B, slots 6 are provided in a regular pattern in rows extending in the transverse X direction. Alternatively, slits can be provided in an irregular pattern.
    [038] Figure 1C shows a top view of a portion of the first vehicle material 2 after it has been expanded, i.e. after the slits 6 have been opened into openings 7.
    [039] The absorbent product shown in Figures 2A and 2B is a urine incontinence shield in the form of a pad 200. The pad 200 is viewed from the side of the pad that is intended to face a user's body when it is used. Pad 200 comprises a liquid-permeable topsheet 24, a liquid-impermeable backsheet 8 and an absorbent core 9 enclosed between the topsheet 24 and the backsheet 8, and an odor control material 1 disposed between. the topsheet 24 and the absorbent core 9.
    [040] The top sheet 24 and the bottom sheet 8 of the pad 200 together extend laterally outside the absorbent core 9 along the entire circumference of the absorbent core 9 and are connected to each other at an edge gasket 10 at the around the periphery of the absorbent core 9.
    [041] The top sheet 24 consists of any material that is suitable for the purpose, i.e., soft and permeable to liquids. Examples of commonly found topsheet materials are non-woven materials, perforated plastic films, plastic or textile mesh, and fluid-permeable foam layers. Laminates consisting of two or more topsheet materials are also commonly employed, as are topsheets that consist of different materials within different parts of the fluid permeable user-facing surface.
    [042] The bottom sheet 8 is impermeable to fluids. However, bottom sheet materials that are only fluid repellent can be used, particularly in cases where relatively small amounts of urine are expected to be absorbed. The backsheet 8 is commonly comprised of a thin flexible fluid impermeable plastic film, but fluid impermeable non-woven materials, fluid impermeable foams and fluid impermeable laminates are also contemplated within the scope of the invention. The bottom sheet 8 may be breathable, which implies that air and/or steam can pass through the bottom sheet 8. In addition, the bottom sheet 8 may have an outer surface facing the garment of a textile material such as non-woven material.
    [043] The absorbent core 9 can be produced from any suitable absorbent or fluid-retaining material as known in the prior art, such as one or more layers of cellulose fluff pulp, foam, fiber fillers, etc. The absorbent core 9 may contain fibers or particles of highly absorbent polymer material, commonly known as superabsorbents, which are materials that have the ability to absorb and retain large amounts of fluid upon formation of a hydrogel. The superabsorbent can be blended with cellulose down pulp and/or can be arranged in pockets or layers in the absorbent core 9. The fibers can be pulp fibers and the superabsorbent material can be polyacrylate based particles. An absorbent structure can comprise 40 to 80% superabsorbent and 60 to 20% pulp fibers.
    [044] The absorbent core 9 may additionally incorporate components to improve the properties of the absorbent core 9. Some examples of such components are binder fibers, fluid dispersion materials, moisture indicators, etc., as known in the prior art.
    [045] Cushion 200 has an elongated generally rectangular shape when fully extended in all directions. Any suitable shape can be used for the absorbent product, such as an hourglass shape, trapezoidal shape, triangular shape, an oval shape, etc. The shape of the product of the invention may be symmetrical about a transverse centerline through the product, or it may be asymmetrical with end portions having different shapes and/or different sizes.
    [046] The pad 200 has two longitudinal side edges 11, 12 that extend generally in the same direction as a longitudinal centerline across the absorbent product. Front and rear end edges 13, 14 typically extend to the longitudinal centerline at the ends of the absorbent product. The rear end edge 14 is intended to face backwards during use of the absorbent article and the front end edge 13 is intended to face forward towards the wearer's abdomen. The pillow 200 has a front end portion 15, a rear end portion 17 and a crotch portion 16 located between the end portions 15, 17. The crotch portion 16 is a portion intended to be placed against the crotch of a user during product use and constituting the main acquisition area for the bodily fluid reaching the pillow 200.
    [047] The pad 200 may additionally include securing means for securing the absorbent product within a supportive pant garment, such as a pair of underwear. The securing means may be in the form of two longitudinally extending bands of pressure sensitive adhesive disposed on the garment facing surface of the bottom sheet 8. The securing means may be covered by a releasable protective layer, by example, a silicone paper, a non-woven material or any other releasable material as known in the prior art. Prior to placing the absorbent product on the support garment, the protective layer is removed from the attachment means to expose the adhesive and make it available for attachment to the garment garment.
    [048] Elastic elements 18, 19 may be arranged along the lateral edges laterally outside the absorbent core 9. Elastic elements 18, 19 may be bands of elastic material. Elastic elements 18, 19 are optional components of the absorbent product and can be omitted.
    [049] The means of attachment is optional for the invention and can be omitted if desired. When using an adhesive fastening means, any suitable adhesive pattern can be used, such as full coating of the backing sheet, one or more longitudinal adhesive bands, transverse bands, dots, circles, curves, stars, etc. Furthermore, the fastening means may be a mechanical fastener, such as hook-type fasteners, clips, pressure screw, etc. or they can be a friction fastener, such as a friction liner or an open cell foam. Combinations of different types of fasteners are also conceivable.
    [050] The odor control material 1 in Figure 2A is situated above the absorbent core 9 and below and in direct contact with the top sheet 24. However, it is also possible that the absorbent product comprises a layer of distribution and acquisition of liquid and the odor control material may, in such a product, be situated between the liquid distribution and acquisition layer and the absorbent core, or between other layers in the product. The absorbent core 9 of pad 200 comprises a first absorbent layer 20 and a second absorbent layer 21. The odor control material 1 may also be disposed in the absorbent product between the first absorbent layer 20 and the second absorbent layer 21.
    [051] The absorbent layers 20, 21 can be homogeneous structures or can themselves be layered structures, such as absorbent laminates of the same material or different materials. The absorbent layers can be of uniform thickness or can vary in thickness in different parts of the layers. Similarly, basis weight and composition may vary within the absorbent layers. By way of example, an absorbent layer may comprise a mixture of absorbent and/or non-absorbent fibers and superabsorbent material, wherein the ratio of superabsorbent material to fibers may vary in the layer.
    [052] The first and second absorbent layers 20, 21 can be of any suitable shape, such as an hourglass shape with flared end portions and a narrow portion at the crotch portion, or a rectangular shape. The second absorbent layer 21 is placed below the first absorbent layer 20. The first absorbent layer 20 is smaller than the second absorbent layer 21. The second absorbent layer 21 extends further back and forth in the absorbent product than in the first layer absorbent 20. However, the absorbent core may also comprise only a single layer or may comprise one or more additional absorbent layers. The size of the different layers may also vary, and the absorbent core 9 depicted in Figures 2A and 2B is only an illustration of an absorbent core suitable for the present invention.
    [053] The odor control material 1 in the absorbent pad 200 illustrated in Figures 2A and 2B has a rectangular shape and can be surrounded in the lateral and longitudinal directions by portions of the absorbent core. Other formats and settings for odor control material 1 can also be used.
    [054] In Figure 2B, a cross-sectional view of the absorbent product of Figure 2A is shown, along line II-II. Thus, pad 200 has a liquid-permeable topsheet 24, a liquid-impermeable backsheet 8, and an absorbent core 9 enclosed between the topsheet 24 and the backsheet 8, and the odor control material 1 is located between the top sheet 24 and the absorbent core 9. In Figure 2B it is also shown that the first carrier material 2 has a first surface 22 and an opposite second surface 23 wherein the first surface 22 faces the sheet. of liquid-permeable tops 24 and the second surface 23 faces the absorbent core 9. In addition, the odor control particles 3 are bonded to the second surface 23 of the first carrier material 2 so that the surface bonded with particles of odor control 3 is facing the absorbent core 9. The first carrier material 2 is laminated to a second carrier material 5 in its expanded state so that the first carrier material 2 is attached to the second carrier material. carrier 5 in the form of a networked structure with openings 7. The second carrier material 5 faces the topsheet 4 and the first carrier material 2 faces the absorbent core 9. EXAMPLES EXAMPLE 1 - POSITIONING OF ODOR CONTROL MATERIAL IN ABSORBENT PRODUCT
    [055] A sensory evaluation was performed to investigate how the position of the odor control material in the direction of product thickness influenced odor inhibition; next to the bottom sheet, in the middle of the product between two layers in the absorbent core or directly below the top sheet.
    [056] Tested absorbent products: 1. Incontinence pad without odor control material (reference) 2. Incontinence pad with odor control material directly above the back sheet 3. Incontinence pad with odor control material in between layers on absorbent core 4. Incontinence pad with odor control material directly below top sheet
    [057] The incontinence pad had a top sheet, a bottom sheet and an absorbent core between them. The absorbent core comprised two layers, wherein the first layer faced the top sheet and the second layer faced the bottom sheet. The first layer facing the topsheet had a smaller total surface area in the plane of the pad than the second layer. The odor control material was the same size (surface area) as the first absorbent layer. The first absorbent layer covered about 50% of the total surface of the incontinence pad, so therefore the odor control material also covered about 50% of the total surface of the incontinence pad. The odor control material was placed in three different positions on the products; at the top of the product, between the absorbent cores and at the bottom of the product. An odor solution containing diacetyl (250 ng/ml), dimethyl trisulfide (14 ng/ml) and 3-methyl butanal (40 ng/ml) was added to each product before odor assessment took place.
    [058] There were 11 examiners. Examiners were asked to judge the odor intensity of the test products and to place a mark on a line scale, labeled from very weak (0) to very strong (1). The relative odor intensity for the reference product without an odor control material was set to a 1 on the line scale.
    [059] The mean values calculated from the opinions of the examiners provided the following results:

    [060] The conclusion of this sensory evaluation indicates that the positioning of the activated carbon matters, the smell was less when it was placed directly below the top sheet, greater when it was placed between the two absorbent cores and even greater when it was placed at the bottom of product. EXAMPLE 2 - ODOR CONTROL PARTICLES ON A VEHICLE MATERIAL SURFACE COMPARED TO ODOR CONTROL PARTICLES ON BOTH VEHICLE MATERIAL SURFACE
    [061] A vehicle material has a first surface and an opposite second surface. Odor inhibition was measured for a carrier material that has odor control particles attached to the first surface as well as the second surface. The odor control particles were activated carbon. Odor inhibition was also measured for a vehicle material with activated carbon only on the second surface of the vehicle material. Odor inhibition was also measured for an incontinence pad without odor control material.
    [062] Tested absorbent products: 1. Incontinence pad without odor control material (reference) 2. Incontinence pad with a foam coated with activated carbon on both foam surfaces 3. Incontinence pad with a carbon coated foam activated on only one surface of the foam
    [063] For incontinence pad 2, each foam surface was coated with 25 g/m2 of activated carbon, so the total amount of carbon was 50 g/m2. For incontinence pad 3 where the foam in the absorbent product was coated with activated carbon on only one surface, that surface was coated with 50 g/m2 of carbon. Therefore, the total amount of charcoal was the same for absorbent product 2 and absorbent product 3.
    [064] Odor reduction was assessed as follows: A cocktail with diacetyl, 3-methyl butanal, DMTS and p-cresol was added to the incontinence pad. The incontinence pad was placed in airtight glass chambers and allowed to incubate at 35 °C so that equilibrium could be reached between solution and void space. The void space was sampled by a SPME fiber (solid phase extraction microfiber) followed by analysis with a GC-MS (gas chromatography coupled to mass spectrometry) system. Individual odor substances were detected and odor reduction was calculated by dividing the peak area for the sample with activated carbon particles by the peak area for the sample without activated carbon particles. The sample with activated carbon particles was compared only with samples without activated carbon particles (reference) in which the same batch of odor cocktail was used, and samples with activated carbon particles and samples without activated carbon particles (reference) they were always analyzed on the same day.
    [065] Result:

    [066] No difference in odor reduction could be observed between incontinence pad 2 which has activated carbon particles coated on both surfaces compared to incontinence pad 3 which has activated carbon particles coated on only one surface.
    权利要求:
    Claims (14)
    [0001]
    1. HYGIENIC PRODUCT, which comprises an odor control material (1) having a longitudinal direction (y), a transverse direction (x) and a thickness direction (z), wherein said hygienic product comprises a sheet of liquid-permeable top (24), a liquid-impervious backsheet (8) and an absorbent core (9) enclosed between the topsheet (24) and the backsheet (8), characterized by the odor control material (1) is located between the topsheet (24) and the absorbent core (9) and comprises a first carrier material (2), wherein a plurality of odor control particles (3), consisting of activated carbon , are bonded to at least one surface of the first carrier material (2) by a binding substance (4), in that the first carrier material (2) in an unexpanded condition has a plurality of transverse slits (6) and by the fact that the first vehicle material (2) is fixed in an expanded condition in the direction longitudinal (Y) so that the transverse slits (6) form a plurality of openings (7), and that the first vehicle material (2) is fixed in expanded condition in the sanitary product through which the odor control material ( 1) is in the form of a lattice structure.
    [0002]
    2. HYGIENIC PRODUCT, according to claim 1, characterized in that the odor control material (1) is fixed in the expanded condition in the hygienic product so that the odor control material covers from 5 to 100% of the total surface area in the horizontal plane of the hygienic product.
    [0003]
    3. HYGIENIC PRODUCT, according to any one of claims 1 to 2, characterized in that the odor control material (1) is fixed in the expanded condition in the hygienic product so that the odor control material (1) covers from 5 to 60% of the total surface area in the horizontal plane of the toilet product.
    [0004]
    4. HYGIENIC PRODUCT, according to any one of claims 1 to 3, characterized in that the first vehicle material (2) is a foam material.
    [0005]
    5. HYGIENIC PRODUCT according to any one of claims 1 to 4, characterized in that the slits (6) are provided in alternating rows extending in the transverse direction (X) having a slit length A of 5 to 20 mm and a slit distance B between the ends of two mutually sequential slits (6) in the alternating row of 0.4 to 0.6 times the length of slit A, and a distance of row C between two adjacent rows of 0.4 to 0. 6 times the slit length A.
    [0006]
    6. HYGIENIC PRODUCT, according to claim 5, characterized in that the slit length A divided by the distance of row C is less than or equal to 10.
    [0007]
    7. HYGIENIC PRODUCT according to any one of claims 1 to 6, characterized in that the odor control material also comprises an additive, such as a plasticizer, a stabilizer, an agent that improves dispersibility, a pH regulating agent , an antimicrobial substance, a perfume, a surfactant and/or a flavoring substance.
    [0008]
    8. HYGIENIC PRODUCT, according to any one of claims 1 to 7, characterized in that the hygienic product is an absorbent product, such as a diaper, a sanitary towel, an incontinence protector or a daily protector.
    [0009]
    9. HYGIENIC PRODUCT, according to claim 8, characterized in that the binding substance is soluble in water, then, it dissolves at least partially when in contact with an aqueous solution.
    [0010]
    HYGIENIC PRODUCT according to any one of claims 8 to 9, characterized in that the first vehicle material (2) has a first surface (22) and an opposite second surface (23), wherein the first surface (22) is facing the liquid permeable topsheet (24) and the second surface (23) facing the absorbent core (8), wherein the odor control particles (3) are attached to the second surface (23) of the first carrier material (2) so that the surface attached to the odor control particles faces the absorbent core (9).
    [0011]
    11. HYGIENIC PRODUCT according to any one of claims 8 to 10, characterized in that the odor control material comprises a second vehicle material (5) laminated to the first vehicle material (2) in its expanded condition so that the first vehicle material (2) is attached to the second vehicle material (5) in its expanded condition in the form of a lattice structure with openings (7).
    [0012]
    12. HYGIENIC PRODUCT, according to claim 11, characterized in that the second carrier material (5) faces the top sheet (24) and the first carrier material (2) faces the absorbent core (9).
    [0013]
    HYGIENIC PRODUCT according to any one of claims 11 to 12, characterized in that the second vehicle material (5) is a non-woven material.
    [0014]
    14. METHOD FOR PRODUCING A HYGIENIC PRODUCT, which comprises an odor control material (1) having a longitudinal direction (y), a transverse direction (x) and a thickness direction (z), wherein said hygienic product comprises a liquid-permeable topsheet (24), a liquid-impermeable backsheet (8) and an absorbent core (9) enclosed between the topsheet (24) and the backsheet (8), characterized by the method comprising the following steps: - providing a first vehicle material (2) which forms part of the odor control material (1) and which has a first surface and an opposite second surface; - binding a plurality of odor control particles (3) consisting of activated carbon to at least the first surface by means of a binding substance (4), by applying the binding substance (4) comprising activated carbon particles in at least one surface of the first vehicle material (2), wherein carbon particles adhere to the first vehicle material (2); - providing a plurality of transverse slots (6) in the first vehicle material (2), in an unexpanded condition thereof; - expanding the first vehicle material (2) in the longitudinal direction (Y) such that the slits (6) are open to the openings (7), allowing the ingress of liquid through which the first vehicle material (2) it is in the form of a lattice structure; - providing a second vehicle material (5) for attaching said first vehicle material expander (2) such that it is maintained in an expanded condition, and laminating said first expanded vehicle material (2) and the said second vehicle material (5), wherein said first expanded vehicle material (2) is secured in an expanded condition relative to said second vehicle material (5), forming a laminated network of an odor control material (1); - cutting said odor control material (1) along said at least one cutting line, through which said piece of material is produced so that it comprises a plurality of said openings (7); and - locating the odor control material (1) between the top sheet (24) and the absorbent core (9) so that the first carrier material (2) of the odor control material (1) is located facing for the absorbent core (9) and the second carrier material (5) is located facing the liquid permeable topsheet (24).
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    同族专利:
    公开号 | 公开日
    AU2013408436A1|2016-06-23|
    JP6340654B2|2018-06-13|
    RU2016129457A|2018-01-25|
    CN105828776B|2019-09-03|
    AU2013408436B2|2017-02-23|
    EP3082703B1|2018-07-18|
    BR112016013254A2|2017-08-08|
    EP3082703A1|2016-10-26|
    EP3082703A4|2017-08-02|
    US10159612B2|2018-12-25|
    PL3082703T3|2018-12-31|
    JP2017509357A|2017-04-06|
    US20170027778A1|2017-02-02|
    EP3082703B8|2018-09-12|
    RU2642030C1|2018-01-23|
    CN105828776A|2016-08-03|
    WO2015094068A1|2015-06-25|
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    法律状态:
    2019-01-02| B25D| Requested change of name of applicant approved|Owner name: ESSITY HYGIENE AND HEALTH AKTIEBOLAG (SE) |
    2019-10-15| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-05-04| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-06-29| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 20/12/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    PCT/SE2013/051603|WO2015094068A1|2013-12-20|2013-12-20|Absorbent product comprising odor control material|
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