• 专利附录
  • 专利说明
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    • 专利摘要:
    "PRESSURE-SENSITIVE LABEL TO LABEL A SUBSTRATE AND PROCESS OF APPLYING A COLD-PRESSURE SENSITIVE LABEL". The present invention relates to a pressure sensitive label for use in a cold transfer process that can be used for clothing identification and labeling. The pressure-sensitive label can be applied to a textile surface or any other surfaces for which heat transfer is unfavorable or unavailable. The pressure-sensitive label can remain on the substrate to which it is attached through repeated washing and drying cycles.
    公开号:BR112012029997B1
    申请号:R112012029997-2
    申请日:2011-05-25
    公开日:2021-02-09
    发明作者:Yi-Hung Chiao；Sharis Krekian；Christine Uyen Dang；Yuan Yuan Zhang；Sriram Venkatasanthanam；Ramin Heydarpour；Kai Li
    申请人:Avery Dennison Corporation；
    IPC主号:
    专利说明:

    CROSS REFERENCE ON REQUEST
    [0001] The present application claims the benefit of US application No. 12 / 787,459, deposited on May 26, 2010, which is incorporated herein in its entirety. FIELD OF THE INVENTION
    [0002] The present invention relates to the field of pressure sensitive labels, and more specifically to pressure sensitive labels of the cold transfer process for textile or other substrates. Pressure sensitive labels can be applied to a substrate and used in applications where a heat transfer label has traditionally been employed, but the present invention can perform adhesion to the substrate without the need to apply heat, or a process referred to as " cold transfer "throughout this description. Pressure sensitive labels are durable and can remain on the substrate through repeated washing and drying cycles. BACKGROUND OF THE INVENTION
    [0003] Heat transfer labels have gained wide acceptance in the garment industry. Care labels, brand identifiers, graphics, numeric expressions and other types of expressions used as decorations or to provide information for shirts, pants, sportswear, and personal identification tags are all examples of such current applications. Heat transfer labels typically use hot-melt adhesives which become sticky at elevated temperature to allow application to the substrate, but after cooling they may appear stiff or rough at room temperature. This stiffness or roughness of the label can make the user uncomfortable and in some cases can lead to skin irritation. The heat used to apply the label to the clothing can also lead to an undesirable adhesion mark on the clothing, that is, a darkened or discolored area close to where the label is applied. For labels that use sublimation dyes, heat can also cause a migration of dye through the label causing the image to blur or fade. Heat can also damage a heat-sensitive fabric material, such as synthetic fabric, which can partially melt if the heat is too high or applied for a very long period of time.
    [0004] Heat transfer labels have also been used widely in other identification or personalization products such as caps, binders, shoes, travel bags, toys, consumer electronics, sports equipment, etc. that are found in schools, sports activities, camps, gyms, and other places. In addition to the problems associated with the heat transfer label described earlier, the heat requirement for the transfer process limits the use of such labels to areas where a heat source is readily available. However, there is a greater desire to have transferable images when there is no source of heat, and where instant personalized souvenirs or souvenirs can be created, such as outside a sporting event, religious retreats, corporate excursions. , camping sites, etc.
    [0005] The heat used in the transfer process of traditional heat transfer labels can also limit the incorporation of other items on the label. For example, chemical or physical detection devices, tracking devices, security or detection devices can be sensitive to the high heat used for the transfer process of heat transfer labels and can be damaged through exposure to heat as such items were generally not incorporated as part of the transfer label for the garment process.
    [0006] Traditional pressure sensitive labels have been used in association with clothing as name badges and size identification labels. These tags do not normally need to remain on clothing for long periods of time and therefore do not need to be specifically durable in order to withstand repeated washing and drying cycles that can be found with clothing. The pressure-sensitive label will likely fall out of the garment if the garment is subjected to washing and drying. Concern for user comfort is also minimized due to the temporary nature of such applications.
    [0007] Thus, there is a need for a new label that can be used in place of the heat transfer label for clothing and other identification or personalization applications. There is also a need for a pressure sensitive label from the cold transfer process that can remain on clothing through repeated washing and drying cycles and provide softness and comfort for a user. BRIEF SUMMARY OF THE INVENTION
    [0008] The modalities of the present invention described below are not intended to be exhaustive or to limit the invention to the precise forms described in the following detailed description. On the contrary, the modalities are chosen and described so that others skilled in the art can appreciate and understand the principles and practices of the present invention.
    [0009] The invention is directed to a cold transfer process pressure sensitive label that has properties similar to or better than those of conventional heat transfer label offerings. The pressure sensitive label of the cold transfer process is suitable for use in connection with clothing labeling, decoration, personalization, identification, and other purposes.
    [00010] In an exemplary embodiment of the present invention, a pressure sensitive label includes a layer of ink, a layer of printable medium, or both, with the layer of ink on top of the printable layer, and a layer of adhesive pressure sensitive on the opposite side of the paint layer. The pressure sensitive adhesive has a wet adhesion to the substrate greater than 3.9 N / cm (10 N / in). The pressure-sensitive label is able to remain on the substrate to which it is attached through repeated washing and drying cycles.
    [00011] In another exemplary embodiment of the invention presently described, a pressure-sensitive label includes a layer of paint and a layer of pressure-sensitive adhesive. The pressure sensitive adhesive is registered with the paint layer and substantially juxtaposed to it.
    [00012] In another exemplary embodiment of the invention presently described, a labeled article includes a substrate and a pressure sensitive label. The pressure-sensitive label includes a layer of ink, or a layer of printable medium, or both, with the layer of ink on top of the printable layer, and a layer of pressure-sensitive adhesive on the opposite side of the layer of ink. The pressure sensitive adhesive has a wet adhesion to the substrate greater than 3.9 N / cm (10 N / in). The pressure-sensitive label is able to remain on the substrate to which it is attached through repeated washing and drying cycles.
    [00013] In a further exemplary embodiment of the invention described herein, a process for making a pressure sensitive label is described and includes the steps of first providing a temporary support and subsequently depositing a layer of ink on the temporary support. Then deposit a layer of pressure-sensitive adhesive on the paint layer.
    [00014] In a further exemplary embodiment of the invention described herein, a garment has a cold transfer pressure sensitive label attached to it. The pressure-sensitive label includes a layer of ink, or a layer of printable medium, or both, with the layer of ink on top of the printable layer, and a layer of pressure-sensitive adhesive on the opposite side of the layer of ink. The pressure sensitive adhesive has a wet adhesion to the substrate greater than 3.9 N / cm (10 N / in). The pressure-sensitive label is able to remain on the substrate to which it is attached through repeated washing and drying cycles.
    [00015] Other features and advantages of the present invention will become apparent to those skilled in the art of the following detailed description. It should be understood, however, that the detailed description of the various embodiments and the specific examples, while indicating the preferred and other embodiments of the present invention, are given by way of illustration and not limitation. Many changes and modifications within the scope of the present invention can be made without departing from its spirit, and the invention includes such modifications. BRIEF DESCRIPTION OF THE DRAWINGS
    [00016] These, as well as other objects and advantages of this invention, will be more fully understood and appreciated by referring to the following more detailed description of the presently preferred exemplary embodiments of the invention in conjunction with the accompanying drawings, of which:
    [00017] Figure 1 is a sectional illustration of an exemplary embodiment of a pressure sensitive label according to the present invention;
    [00018] Figure 2 is a sectional illustration of an exemplary embodiment of a pressure sensitive label according to the present invention;
    [00019] Figure 3 is a sectional illustration of an exemplary embodiment of a pressure sensitive label according to the present invention;
    [00020] Figure 4 is a sectional illustration of an exemplary embodiment of a pressure sensitive label according to the present invention;
    [00021] Figure 5 is a block diagram illustrating an exemplary manufacturing process for making a pressure sensitive label embodiment in accordance with the present invention;
    [00022] Figure 6 is a block diagram illustrating an exemplary manufacturing process for making a pressure sensitive label embodiment according to the present invention;
    [00023] Figure 7 illustrates a top view of an exemplary embodiment of a pressure sensitive label applied to a surface according to the present invention;
    [00024] Figure 8 illustrates an exemplary embodiment of a pressure sensitive label roll according to the present invention;
    [00025] Figure 9 is a block diagram illustrating an exemplary manufacturing process for making a pressure sensitive label embodiment in accordance with the present invention; and
    [00026] Figure 10 illustrates a top view of an exemplary embodiment of a pressure sensitive label applied to a surface according to the present invention.
    [00027] Unless otherwise indicated, the illustrations in the figures above are not necessarily drawn to scale. DETAILED DESCRIPTION OF THE INVENTION
    [00028] The apparatus and methods described in this document are described in detail by way of examples and with reference to the Figures. Unless otherwise specified, equal numbers in the figures indicate references to the same, similar, or corresponding elements throughout the figures. It will be appreciated that modifications to the examples presented and described provisions, configurations, components, elements, apparatus, methods, materials, etc. can be made and may be desired for a specific application. In this description, any identification of specific forms, materials, techniques, provisions, etc. they are either related to a specific example presented or are merely a general description of such a form, material, technique, layout, etc. Identifications of specific details or examples are not intended to be, and should not be, considered mandatory or limiting unless specifically designated as such. Selected examples of devices and methods are hereinafter presented and described in detail with reference to the figures.
    [00029] The present invention relates to a cold transfer pressure sensitive label that can be used instead of heat transfer labels. The pressure-sensitive label can be applied to textile surfaces, or any other surface for which heat treatment is unfavorable or unavailable. The pressure-sensitive label can remain on the substrate to which it is attached through repeated washing and drying cycles. The pressure sensitive label of the present invention provides a soft, relatively smooth touch or feel, which increases user comfort.
    [00030] Throughout this description, the term "layer" refers to the spatial arrangement of a specific type of material or functional components which can be either a continuous layer or a discontinuous layer, one provided in a pattern or a uniform configuration either in a random or non-regular arrangement. A layer is "on record" with another layer when they align correctly with each other according to the desired design or configuration.
    [00031] Reference is now directed to Figure 1, which provides a cross-sectional view of an exemplary pressure sensitive label that can be applied in a cold transfer process and which is prepared according to the present invention. The pressure sensitive label 100 has four layers. A temporary support layer 102, an index layer 104, a pressure sensitive adhesive layer (PSA) 106 registered with the index design and a release liner 108 in contact with the pressure sensitive adhesive layer to provide protection for the pressure sensitive adhesive. When applied over a substrate surface, the release liner 108 is detached first. The label is then attached over the substrate surface through the layer of PSA 106. Pressure can be applied with the applicator's hand or a pressure tool, device, or equipment through the side of the temporary support. The temporary support 102 is then detached, leaving only the printed indexes 104 attached to the substrate surface through the PSA 106.
    [00032] Although an index layer 104 has been provided in Figure 1, it should be understood that multiple layers of printed indexes can make up the index layer 104 and can be positioned between the temporary support layer 102 and the PSA layer 106 For example, a layer of red ink can be deposited on a temporary support layer 102, then a layer of white ink can be deposited on the layer of red ink. A layer of black ink can additionally be deposited on the layer of white ink. All layers of paint can register with each other so that each layer aligns vertically on top of the other, or may not register with each other, that is, the layers can be stretched out of registration depending on the attributes or requirements of the design . The index layer 104 can be created using dyes, dyes, pigments, or toners. Indexes can be printed or created using other standardization methods, such as by canvas, coating or the like.
    [00033] In an additional alternative mode instead of multiple layers of ink, layers of printable media can also be used in place of one or more of the ink layers. A layer of printable medium can be made of a printable topcoat, a printable polymer film, or any other printable material that can be made as a layer. Throughout this description, we use the term "association layer" of ink to refer interchangeably to a layer of ink or a layer of printable medium.
    [00034] Figure 2 provides a sectional view of another exemplary pressure sensitive label which can be used in a cold transfer process which is prepared in accordance with the invention described herein. The pressure sensitive label 200 has five layers: a temporary backing layer 202, a layer of first printed indexes 204, a layer of an ink association layer 210, a layer of pressure sensitive adhesive (PSA) 206, a coating release 208 in contact with the pressure sensitive adhesive layer. When applied over a substrate surface, the release liner 208 is detached first. The label is then attached over the substrate surface through the layer of PSA 206. A pressure can be applied with the applicator's hand or another suitable pressure application device through the outer side of the temporary support 202. The temporary support 202 it is then detached and leaving only the printed indexes 204 and the ink association layer 210 stuck to the substrate surface through the PSA 206.
    [00035] Figure 3 provides a sectional view of another exemplary pressure sensitive label 300 prepared according to the invention presently described in an uncoated or coating-free configuration. The pressure-sensitive label has three layers: a temporary support layer 302 with a first surface 301 and a second surface 303 with a PSA release coating on the second surface 303, an index layer 304 in contact with the first surface 301 of the temporary support 302, a layer of pressure sensitive adhesive (PSA) 306 which is registered with the printed indexes 304. In storage, the label itself is rolled up so that the PSA is in contact with the release liner of PSA on the second surface of the temporary support. When applied over a substrate surface (not shown), the PSA label is unrolled. The PSA label is then attached to the substrate surface with pressure applied across the exposed side or surface 303 of the temporary support 302. The temporary support layer 302 is then detached, leaving only the printed indexes 304 stuck to the substrate surface through of PSA 306.
    [00036] Figure 4 provides a sectional view of another exemplary pressure sensitive label prepared in accordance with the invention described herein. The pressure-sensitive label has three layers: a layer of printable media 412, a layer of pressure-sensitive adhesive (PSA) 406, and a release coating 408 in contact with the pressure-sensitive adhesive layer 406. The coating of release 408 provides protection for the pressure sensitive adhesive. Optionally, label 400 can be die-cut to the desired label shapes or configuration. When applied over a substrate surface, the release liner 408 is detached first. The label 400 is then attached over the substrate surface through the layer of PSA 406. A pressure can be applied through the side of the printable medium 412. In an additional exemplary embodiment of the invention, a label of PSA 400 includes a release liner 408 , a layer of pressure-sensitive adhesive 406, and a layer of indexes 412 on the layer of PSA 406.
    [00037] A PSA label in an additional exemplary embodiment of the invention includes a layer of a printable medium coated with a printable release on one surface and a layer of PSA on the opposite surface. In storage, a sheet with multiple PSA labels is self-rolled with the PSA in contact with the printable release of the print medium. United States Patent Numbers 6,352,768 and 5,621,020 describe formulations of a printable release. Publications, patents, and patent applications are referred to throughout this description. All references cited herein are hereby incorporated by reference.
    [00038] Optionally, the PSA label can be die cut into the desired shape. Die cutting must be done so that each individual label can be easily torn or separated from the label sheet or sheet, but each label is still attached to the label sheet before application over a substrate surface at disconnected points. When applied over a substrate surface, the PSA label is unrolled first. The PSA tag is then attached to the substrate surface with a pressure applied across the side of the coating raw material.
    [00039] Figure 8 illustrates an exemplary die-cut label roll according to the invention described herein. A sheet of self-rolling labels 800 has labels partially cut by matrix 832 attached to the remainder of label sheet 830 through discontinuous uncut portions 834.
    [00040] Printed indexes can be created on the printable medium before the label is attached over the substrate surface, or after the label is attached over the substrate surface. The indexes can be made using a digital printer such as a laser printer or an inkjet printer; an analog printer such as a screen printer or a flexo printer; an engraving printer; a writing instrument such as markers or pens; or any other printing method. Inks can be liquid or solid. When created for a washable substrate, the indexes are, for example, made of components that are resistant to washing, that is, which remain on the washable substrate by attaching to the pressure sensitive adhesive or the paint association layer. Examples of such inks include, without limitation, pigment inks formulated with polymeric wash-resistant binders such as polyurethane or polyacrylates; solid toners used in commercial laser printers such as the Oki C3200 printer laser toner; and dye-based inks used in printers such as HP or Epson printers. Examples of printers include, without limitation, analog printers, which include industrial printing presses such as the offset press, Indigo, or Xeikon; commercial inkjet and laser label printers, and office or home printers. Other additives, such as an optical brightening agent, sparkling powders, and indicators or taggants for anti-divergence or authentication or indication purposes can also be added to the ink formulation.
    [00041] The printed indexes must have good adhesion to the adhesive layer when contacting directly with the adhesive. For applications on clothing that is stretchable and flexible, elastomeric paint components in paint formulations can be used. Examples of such components include, without limitation, polyurethane and polyacrylates. Commercially available polyurethanes include L2985 and HD2101 from C.L. Hauthaway & Sons Corporation in Lynn city, MA. MATSUMIN 301W by Matsui International Co. in Gardena, CA is an example of acrylic-based screen printable ink. The paint can additionally be cross-linked to improve its washing ability. Suitable crosslinkers include, without limitation, APR 202 from Advanced Polymer inc., Carlstadt, NJ; and CX100 from NeoResins inc., Wilmington, MA.
    [00042] The release coating layer provides protection for the PSA surface until the label is ready for use. Any release liner suitable for use with the chosen adhesive can be used. The release liners can be a polyolefin film, a coated paper or film, and a coated super calendered paper, for example. Examples of suitable coating materials for release coatings include, without limitation, silicone-based and fluorine-based materials, or any other material that has the desired release properties, for example, waxes, acrylates, and carbamates. The same type of coating materials can be used on the second surface of the temporary support in the case of a self-rolled label. Examples of release coatings include, without limitation, Dow Corning's SYL-OFF product lines in Midland, MI; the PRIMAL R and RHOPLEX R product lines from Dow Chemicals, Midland, MI; and the DEHESIVE product lines of Wacker Polymer, Allentown, PA. Examples of suitable release coatings include, without limitation, D2 CL PET 7300A / 7350A, Grade 27320, and LOPASIL from Loparex LLC, Willowbrook, IL; and PP-coated impression liner from Felix Schoeller, Pulaski, NY.
    [00043] The pressure sensitive adhesive needs to have sufficient adhesion on the substrate surface so that the label remains on the substrate surface through normal use and wear of the substrate. For pressure sensitive labels for clothing applications, the labels must remain on clothing through repeated washing and drying cycles. The pressure sensitive adhesive must be able to maintain sufficient adhesion on the garment fabric through the washing and drying process. Therefore, in addition to the dry adhesion requirements, the present PSA adhesive must maintain a wet stickiness and resistance to wet detachment on the textiles or substrates on which it is applied. Exemplary textiles include, cotton, poly cotton, silk, polyester, spandex, nylon and their mixtures. The surface properties of such textiles or substrates range from highly hydrophilic to highly hydrophobic. Copolymerization of alkyl acrylate with acrylic acid copolymer and a blend of polar and non-polar polymer components, resin, surfactant, crosslinker, and other additives has been discovered to ensure a long-lasting durability of the adhesive label. When the pressure sensitive label needs to be die cut, a good die-through of the blade and separation of the surrounding material is also desired. When soaked with water, the adhesive must maintain a peel strength of at least approximately 3.9 N / cm (10 N / in) measured with a modified peel test method. The test method will be explained in detail in the test method section. The adhesive is typically coated with approximately 50 microns to approximately 200 microns in thickness.
    [00044] Examples of suitable pressure sensitive adhesives are tackiness emulsion polymers, solvent based polymers, or UV curable polymers. Examples of emulsion polymers include acrylic-based polymers such as GELVA GME CYTEC 3011, 2397, and 2424 from Cytec Industries, Springfield, MA; KIWOPRINT D158, D148 by Kiwo Inc., Seabrook, TX, AE 5108A, 3413, FT 1147, FT 1149 by Avery Dennison, Painesville, OH; and PROHESION 3100, 3200 from Rohm and Haas, Philadelphia, PA. Examples of solvent-based polymers include I 814 and FT 1158 from Avery Dennison, Pasadena, California. The adhesives include hydrogenated ester-based resin, such as SE-E-720WF from Arakawa Chemical Industries, Ltd. in Osaka. Japan; SNOWTACK 765A and FORAL 85 from Hexion in LaVerge, TN .; and PENCEL D-125 from Eastman in Kingsport, Tennessee. Adhesives can be added from 5% to 50%. The pressure-sensitive adhesive can also be plasticized. Examples of suitable plasticizers include, without limitation, CITROFLEX A4 and bibutyl sebacate, both from Vertellus Specialties, Indianapolis, IN. Plasticizers can be added from 3% to 15%. The pressure-sensitive adhesive can additionally be cross-linked. Examples of crosslinkers that can be used for such applications include, without limitation, APR 201, 202, 500 from Advanced Polymer inc., Carlstadt, NJ; and CX-100 from NeoResins inc., Wilmington, MA. Cross linkers can be added from 0.5% to 20%. Emulsion-based polymers have the advantage of low volatile organic compound (VOC) and are therefore preferred in applications where an environmentally friendly construction is preferred. Examples of UV curable adhesives include, without limitation, GELVA GMR 802002 from Cytec Industries Inc. in Woodland Park, NJ.
    [00045] The temporary support needs to have an appropriate adhesion on the ink layer so that the ink can be deposited on this support, and yet it can be released from this support when the final application over a substrate surface. We defined the adhesion of the paint layer on the temporary support to F1, the adhesion of the adhesive to a substrate surface as F2, the adhesion of the adhesive to the release liner as F3, and the adhesion of the ink to the adhesive as F4. The adhesion forces must satisfy the following relationship: F1 <F2, F3 <F1, and F1 <F4.
    [00046] The adhesion forces F1 and F3 can be modified by treatment on the surface of the temporary support and the surface of the PSA release coating, respectively. It was discovered through this invention that the surface energy of the temporary support on the ink contact side should be between approximately 20 to approximately 35 mN / m. A non-silicone-based release coating in combination with a matte or textured substrate surface provides a good balance of printability and release property. Examples of suitable temporary support include, without limitation, a printable release coated substrate, such as an acrylic based coating, for example, R130W from Mayzo, Suwanne city, GA; and a polypropylene-coated sheet, such as Avery NTP HFM sheets, Pasadena, CA. The surface energy of the PSA release coating should be approximately 20 to approximately 25 mN / m. The silicone-coated release typically has a surface energy in the lower range of 20 mN / m and is therefore good for PSA release, but too low for temporary support. However, the silicone-coated release can still be used as the temporary support with a modification of surface energy by methods known to those skilled in the art, such as corona treatment. Examples of silicone coated release include, D2 CL PET 7300A / 7350A, Grade 27320 and 2SLKN and 5.0 MT PET 4400/4400 grade 26967 from Loparex in Iowa, IA.
    [00047] A suitable printable medium can be a film or a printable topcoat. For clothing applications, it is also desirable to use a soft, stretchable material such as the printable media layer so that the label can stretch to the same degree as the fabric material. Suitable films include films made of polyurethane, polyethylene terephthalate (PET), ethylene vinyl acetate (EVA), fabric, synthetic leather, suede, foam, special paper, polypropylene, polyethylene, polyolefin, inkjet printable medium, printable medium by toner, polyvinyl chloride (PVC), non-pvc film, biodegradable polymers, polylactic acid (PLA), bamboo textile, and other woven and non-woven materials. Examples of such film materials include, without limitation, Avery printable fabric from Avery Dennison, Pasadena, California; VIENNA and ELITE, both are printable and writable laser toner synthetic leather from Fifield, Hingham, MA; DUREFLEX, an aromatic polyurethane from Deerfield, Bayer material science in South Deerfield, MA; HAUTHANE, HD 4664 and L 2985, polyurethane-based emulsion, from Hauthaway and Sons Co located in Lynn, MA; Neenah 9754P0 paper from Neenah paper in Neenah WI; and EVA-based MC912Q51 by Bloomer Plastics, Bloomer, WI; and WORTHEN PS603P from Worthen, Nashua, New Hampshire.
    [00048] Several top coatings can be used as the printable medium. U.S. Patent Application 12 / 619,652 describes such a printable topcoat with a flexibility that can match that of a fabric. This is incorporated herein by reference in its entirety.
    [00049] Other additives, such as a pigment, humectant, crosslinking agent, and viscosity modifier can also be added to this layer of printable medium to improve its performance and processability. TiO2 or hollow sphere polymer suspension, for example, can be added to enhance the whiteness of the printable medium. The printable media layer can be approximately 10 microns to approximately 500 microns thick.
    [00050] The label can be created using any suitable process to manufacture such a label. When an image-only transfer is required, that is, only the image area is desired to be left on the substrate, standardization of indices and registration with the adhesive is an important aspect to allow only the image area to be applied over the textile or the target surface. The registration of the layer between the indexes and the adhesive can be done by cutting or printing analogically or digitally, a mechanical or optical assisted registration during printing, or using a new process through stencil contact printing, fluid doming, jet of pressure, valves, nozzles, paste application, digital contactless printing, valve jet, ultrasonic jet, inkjet, powder spraying or dry film transfer process. The material components which allow for an analog and digital standardization and recording include the indexing material as well as the adhesive material, for example, a toner or inks that allow analog or digital printing, and liquid PSA that allows for analog or digital printing. digital application. When using a conventional process for the standardization or conversion of PSA where the stickiness of PSA can be a problem, the process can be facilitated through the use of capping or encapsulation techniques. For example, a high softening point adhesive can be used to cap or encapsulate the PSA to make the PSA surface non-sticky. This non-sticky surface allows for easier handling, additional printing, direct stacking, self-curling on the PSA or contact with other layers during standardization or conversion, and capable of being homogenized with the underlying PSA layers by additionally heating or by other means appropriate activation code. Other possible PSA activation mechanisms include UV or e-beam pattern curing, chemical reaction activation, or PSA core / shell compound, etc.
    [00051] An exemplary method for making a label according to the present invention is illustrated in block diagram 50 of Figure 5. After starting the process in step 60, the next step 70 is to provide a temporary support with a surface coated with a printable release. Then, in step 80, indexes are made on the printable release using printing equipment. Such printing equipment can include, for example, a digital printer such as an inkjet printer or a laser printer; an analog printer such as a screen printer or flexo printer. Non-limiting examples of printers include, Oki C3200 n laser toner printer, Epson inkjet printer, screen printing printers including an ATMA and SAKURAI press. In addition to the standard suitcase canvas stencil printing, which uses a canvas support, printing can also be performed with metallic stencil printing which does not use the mesh canvas. A typical thickness of the paint layer is approximately 1 micron to approximately 20 microns. Then, in step 90, an ink association layer is provided over the indexes. The ink association layer can be another ink layer, or a printable medium. This ink association layer can be deposited using the same printing method as the ink layer, or it can be coated on the ink layer using a coating matrix. A typical thickness of the ink association layer is between approximately 5 microns to approximately 50 microns. Alternatively, the paint association layer may need to be dried inside an oven or using other suitable drying methods. In step 100, an adhesive layer is laid over the ink association layer and is dried. The adhesive layer can be coated over the ink association layer using methods such as matrix coating, extrusion, screen printing or digital application, such as via an inkjet printer, or automated nozzle application such as via Asymtek Jet or I & J Fisnar Jet. Alternatively, additional layers of the adhesive can be printed on the first layer of adhesive to increase the thickness of this layer. The thickness of the adhesive layer is between approximately 20 microns and approximately 130 microns. The adhesive can be single layer, or multiple layers, or deposited with a pattern. In step 110, a release liner is provided. In step 120, the release liner is laminated with the temporary support through the adhesive. The method ends at step 130. Alternatively, the laminate can pass through a die cutting station to cut the labels to the desired shape and size. The cutting die cuts through the temporary support layer, and up to the surface of the release liner without cutting through the release liner. The die can be a formed blade, a rotary cutting die, or a laser cutter. States Patent Number 6,191,382 describes using a laser to cut a substrate and is hereby incorporated by reference in its entirety. When applied over a substrate surface, the release liner is first detached. The label is then attached over the substrate surface by means of the pressure sensitive adhesive. Alternatively, light pressure can be applied to the label through the temporary support surface. The temporary support layer is then highlighted. Only the paint, the paint association layer and the pressure sensitive adhesive are left on the final substrate surface. The label adheres to the substrate well after the application process described here. However, wet adhesion on fabrics often accumulates over time, and it is recommended to condition the label for 12 hours before subjecting the labeled substrate to washing and drying.
    [00052] In another embodiment of the invention, the label can be created according to the process illustrated in Flowchart 500 in Figure 6. After starting at step 600, the next step 700 is to provide a PSA release coating. Then, in step 800, the pressure-sensitive adhesive is coated over the release liner and dried. Then, in step 900, an ink association layer is provided. In step 1000, the ink association layer is laminated with the adhesive coated release liner through the adhesive layer. Alternatively, the laminate can pass through a die cutting station and cut the labels to the desired shape and size. The cutting die cuts through the paint association layer, and up to the surface of the release liner without cutting through the release liner. Alternatively, the label can pass through a printing station to have the indexes printed on the ink association layer. The method ends at step 1200.
    [00053] In a further embodiment of the invention, the label can be created using the process illustrated in Flowchart 5000 in Figure 9. After starting at step 6000, the next step 7000 is to provide a release liner. Then, in step 8000, the pressure-sensitive adhesive is coated by standardization on the release liner according to the drawing and dried. Then, in step 9000, an ink made of colored or non-colored resin powder is provided. Then, in step 10000, the ink is deposited on the standardized PSA layer using a thermography machine such as the SUNRAISE Thermograph. Accurate registration between the adhesive and the indexes can be achieved in this way. The method ends at step 11000.
    [00054] In addition to the above, the label can additionally be overcoated with a varnish or other material to provide a shiny appearance or improved washability. This step can occur during the labeling process, after printing, or even after the label has been attached to a substrate surface.
    [00055] Figure 7 illustrates the top view of an exemplary embodiment 700 of a PSA tag applied to a T-shirt according to the present invention. The label containing the indexes 714 is positioned on a T-shirt 716 using an adhesive. In this exemplary embodiment, only the printed indexes 714 are attached to the T-shirt 716 using the pressure sensitive adhesive. There is no label frame like most thermal transfer labels would have, to give an 'unlabeled' appearance.
    [00056] The elimination of heat from the label application process also allows the incorporation of other items or functional devices on the label that may otherwise be sensitive to heat. Such items or devices include, without limitation, chemical or physical detection devices, tracking devices, or detection devices. If applied by the conventional heat transfer process, these items or devices could be damaged or not work properly due to the heat used in the process of applying the transfer to clothing.
    [00057] The pressure sensitive label of the current invention solves this problem. For example, an RFID flag can be attached to the target textile with the PSA on the transfer tag; heat sensitive indicators or taggants, such as an irreversible temperature change marker. Other functional components can also be built into the PSA for purposes of marking or identifying products. such components include, without limitation, bar codes, identification components, indication components, detection components, marking components, tracking components, and authentication components. The PSA tag can also be used to form a sandwich structure, such as an RFID inlay on an adhesive / coating backing. Taggant, indicator, or sensor components such as an irreversible thermochromic indicator can similarly be attached or sealed with the current label construction at room temperature as part of the adhesive transfer label.
    [00058] Figure 10 illustrates an exemplary modality 1000 of a pressure sensitive tag applied over clothing with an RFID flag. The RFID beacon 1030 is attached to clothing 1060 through adhesive 1006 on label 1100.
    [00059] The label created with the current invention can also be used for other applications that require adequate wet adhesion. Such applications include fabric patches, uniform badges, etc. When used as a fabric patch, a piece of fabric or other suitable support with the desired pattern on the surface is coated with the pressure sensitive adhesive with a wet adhesion value greater than approximately 3.9 N / cm (10 N / in). The patch can be used to mend torn garments or to decorate the substrates on which it is applied.
    [00060] Without limitation, other additives, for example, surfactants, defoamers, dispersants, wetting agents, dyes, pigments, and co-solvents known to those skilled in the art can be added to the composition of each of the layers. TEST METHODS WET MEMBERSHIP TEST
    [00061] The wet adhesion test measures the peel force required to remove the adhesive coated substrate from a test panel under wet condition using Instron 5542. A pressure sensitive adhesive is coated to a dry thickness of 101.6 microns ( 4 mils) on Mylar Mellinex 455 - 50.8 microns (2 mil) which is uncoated PET support, and cut into strips of 25.4 mm (1 ") by 101.6 mm (4"). The PSA is then applied over Atletico Home FA10 - a 100% polyester red-dyed fabric from Far Eastern Textile in Taiwan with strips of 25.4 mm (1 ") by 203.2 mm (8"), with a free end of 25.4 mm (1 ") by 101.6 mm (4") adhesive. The test strip is laminated on a Cheminstruments stainless steel test panel through the PET side using Avery Dennison FT 530 double-sided tape with a 101.6 mm (4 ") free end, the same region as the adhesive-free end A pass with a 2 kg rubber-covered steel roller over the Cheminstruments Rolldown machine was used to laminate the strip on the test panel.The laminated test specimens are conditioned for 48 hours at room temperature. The test specimen is then saturated with DI water at room temperature for 5 minutes. The free end of the test strip is attached to Instron's jaws. The test is conducted at a 90-degree angle. The detachment rate is 304.8 mm (12 inches) per minute The test was repeated with two sets prepared from the same batch of material.
    [00062] The dry adhesion test measures the detachment force required to remove the adhesive-coated substrate from a test panel under dry condition using Instron 5542. The test method is similar to the wet adhesion test with the elimination of the step where the test specimen is saturated with DI water at room temperature for 5 minutes. A pressure sensitive adhesive is coated in a dry thickness of 101.6 microns (4 mils) on Mylar Mellinex 455 - 50.8 microns (2 mil) which is uncoated PET support, and cut into strips of 25.4 mm (1 ") by 101.6 mm (4"). The PSA is then applied over Atletico Home FA10 - a 100% polyester red-dyed fabric from Far Eastern Textile in Taiwan with strips of 25.4 mm (1 ") by 203.2 mm (8"), with a free end of 25.4 mm (1 ") by 101.6 mm (4") adhesive. The test strip is laminated on a Cheminstruments stainless steel test panel through the PET side using Avery Dennison FT 530 double-sided tape with a 101.6 mm (4 ") free end, the same region as the adhesive-free end A pass with a 2 kg rubber-covered steel roller over the Cheminstruments Rolldown machine was used to laminate the strip on the test panel. The laminated test specimens are conditioned for 48 hours at room temperature. The free end of the test strip is attached to Instron's jaws. The test is conducted at a 90-degree angle. The detachment rate is 304.8 mm (12 inches) per minute. same batch of material. WASH AND DRY TEST
    [00063] The wash resistance of the label construction on the textile or target substrates can be verified by test method 124 of the American Association of Textile Chemists and Colorists (AATCC). The wash test uses a Maytac Atlantis washer and dryer. Warm water is approximately 40.5 ° C (105 ° F) and hot water is approximately 48.8 ° C (120 ° F). The test specimen is evaluated for visible defects including edge lifting, wrinkling, cracking or color fading. DYNAMIC RHEOLOGY SHEEP TEST
    [00064] The dynamic shear test was conducted using TA Instruments AR2000 with parallel plates of approximately 8 millimeters. A temperature scan of approximately -60 ° C to approximately 200 ° C was conducted at a frequency of 10 rad / s and heating rate of 3 ° C / s. VISCOSITY TEST
    [00065] Viscosity is measured using a Brookfield viscometer with mandrel 5 and under 10 rpm. EXAMPLES
    [00066] The chemicals used in the following examples are listed in Table 1 with information on the function, manufacturer and location of each. Table 1





    EXAMPLE 1 OF WHITE INK FORMULATION
    [00067] This exemplary formulation contains L2985, Print Gen MG, GR B2, and Ti-Pure R-746 TiO2. The following procedure is used to create this ink formulation: Using a Caframo electric laboratory mixer, approximately 80 grams (g) of L-2985 are mixed with approximately 30 grams of Ti-Pure R-746 TiO2 for a few minutes. Then approximately 10 g of Print Gen MG is added and mixed using the mixer. Finally, approximately 6 g of GRB2 is added and mixed for a few minutes. EXAMPLE 2 OF WHITE INK FORMULATION
    [00068] 100 g of white base AQ are mixed with 3.5 g of cross linker AQ first to create a paste with 7600 cps of viscosity. 1.5 g of Borchi Gel L75N thickener is then added to the paste to create a white thirty formulation with a viscosity of 17000 cps. EXAMPLES 3 TO 14
    [00069] Examples 3 to 14 are additional examples of white ink formulation which are summarized in Table 2. The ingredients are added in the same procedure as described in Example 1. Table 2
    Table 3

    Table 3- continued

    EXAMPLE 15 - EXAMPLE OF PRESSURE SENSITIVE ADHESIVE - SOLVENT-BASED PSA
    [00070] I-814 is made with the following formulation by weight: 20.05% toluene, 6.01% heptane, 20.54% foral 85, 3.32% Staybelite Ester 3, RC 7110 BHT AO at 0.28%, and Aroset 1085 at 49.80%. The formulation is further modified as follows to make the final PSA: approximately 80 g of I-814 and approximately 10 g CITROFLEX A4 are mixed with a high speed mixer. EXAMPLE 16 - PSA EXAMPLE
    [00071] Approximately 70 g of CYTEC GME3011, approximately 30 g SNOWTACK 765A, approximately 2 g APR202, and approximately 0.8 g BORCHI Gel L75N are mixed with a mixer at medium speed. EXAMPLE 17 - EXAMPLE OF PSA
    [00072] Approximately 2400 grams of KIWOPRINT D158 acrylic PSA, approximately 600 g of SE-E-720WF, approximately 36 g of BYK-19, approximately 24 g of BYK-24, approximately 90 g of RESPUMIT BA 2000, and approximately 30 g of BORCHI Gel L75N are mixed with a medium speed mixer for a PSA with a viscosity of 16500 cps. EXAMPLE 18
    [00073] Approximately 1095 g of GME 3011, approximately 375 g of SE-E-720WF, approximately 13.2 g of BYK-19, approximately 8.8 g of Byk-24, approximately 22 g of RESPUMIT BA 2000, and approximately 7 g of BORCHI Gel L75N are mixed with a medium speed mixer for a PSA with a viscosity of 19000 cps. EXAMPLES 19 TO 41
    [00074] Examples 19 to 41 are additional examples of the pressure sensitive adhesive. Table 3 summarized the formulations. The ingredients are mixed in the similar procedure as described in the previous examples.
    [00075] The adhesive of example 17, commercially available from KIWOPRINT D-158, and FT 1149 are subjected to wet and dry adhesion testing, respectively. For the adhesive in example 27, wet adhesion is 5.7 N / cm (14.54 N / in) on average and dry adhesion 7.0 N / cm (17.92 N / in) on average. For KIWOPRINT D-158, wet adhesion is 0 N / cm (0 N / in) on average and dry adhesion is 3.4 N / cm (8.82 N / in) on average. For FT 1149, wet adhesion is 0.7 N / cm (1.84 N / in) on average and dry adhesion is 5.0 N / cm (12.74 N / in) on average. When using pre-shrunk cotton from a Hanes heavyweight white T-shirt in place of the 100% polyester fabric dyed red, the adhesive in example 27 shows wet adhesion of 3.9 N / cm (9.95 N / in) on average and dry adhesion of 6.4 N / cm (16.38 N / in) on average.
    [00076] The rheological properties of some of the adhesives are summarized in Table 4. Table 4
    EXAMPLE 42 - TEMPORARY SUPPORT
    [00077] RA668W was coated over HFM PET at 20 g / m2. The coating is dried at approximately 100 ° C for approximately 10 minutes. Additional examples are listed in Table 5. Table 5
    EXAMPLE 43 - A PRINTABLE PSA LABEL
    [00078] An index is printed on Neenah 9754P0 paper using an OKI C3200n laser toner printer. Solvent-based FT 1158 coated over an Avery Dennison silicone release coating is then laminated with Neenah paper on the opposite side to the toner printed side. The laminate is then cut around the printed image using a Roland plotter cutter. The cutter cuts through Neenah paper and the adhesive, but not through the silicone coating. The excess areas on the Neenah paper are removed to leave only the image printed with laser toner on the silicone coating. EXAMPLE 44 - PSA LABEL CREATED USING SCREEN PRINTING
    [00079] The temporary support used was a 105 micron thick Smartrans matte CGR polyester film from Hanse Corp. (Kyunggi, South Korea) coated with S4.14 release coating (NTP, Gaupe, Norway). A white ink formulation of example 2 with a viscosity of 17000 cps was printed on the temporary support using an ATMA flatbed printer (ATMA Champ Ent Corp., Taipei, Taiwan) with a 48-mesh, 2-pass screen to obtain a white standard thickness of 25 microns. The printed ink was dried in a drying tunnel at 105 ° C for 60 s. The same screen printer with a 48 mesh screen was used to print the PSA formulation of example 17. A total of 6 passes were used for an adhesive thickness of 60 microns. The drying was carried out in a drying tunnel set at 105 ° C for 60 s. The printed transfer label sheets were cured for 6 h at 65 ° C. The total transfer label thickness obtained was 190 μm. EXAMPLE 45 - A PSA LABEL CREATED USING MATRIX CUTTING
    [00080] A digital toner image is printed on a polypropylene laser toner transfer sheet using an Oki C3200n laser toner printer. A polyurethane-based printable medium of example 1 is coated on this printed sheet with a thickness of approximately 20 microns. A PSA of example 15 weighing approximately 70 g / m2 on a silicone coating is then laminated to the polyurethane coated printing sheet. The laminate is then cut around the toner image using a rotating die. The silicone release liner is detached from the label to expose the pressure sensitive adhesive. Example 46
    [00081] Neenah 9754P0 paper is laminated with the PSA of example 15 after detaching the backing sheet on the newly exposed side. The label is marked with a permanent marker such as Sharpie or Mark-a-Lot (by Avery Dennison). Example 47
    [00082] Approximately 50.8 microns (2 mils) of formulation in example 4 are coated on the PP release coating, and dried at approximately 90 ° C for approximately 1 min. Then approximately 254 microns (10 mils) of PSA from example 17 are coated on the white layer and dried at approximately 100 ° C for approximately 3 h. The sample is then laminated with a silicone coating on top of the PSA. The sample is then die-cut with the inverted image of a N-shape die punch. Example 48
    [00083] This example uses the white formulation of example 10, the adhesive formulation of example 16, and the temporary support formulation of example 46. The formulation of example 46 is coated on an approximately 20 micron matte coated HFM sheet and dry at approximately 100 ° C for approximately 2 minutes to create the temporary support. White paint and adhesive are coated using the same process and parameters as described in example 56. Example 49
    [00084] This example uses the white ink formulation of example 2, the adhesive formulation of example 18, and the same temporary support and process as in example 53.
    [00085] Each label from example 52 to 58 is placed on the Atletico Home FA10 polyester fabric with the following procedures. First, the silicone coating is detached to reveal the PSA layer. The label is then attached to a polyester fabric approximately 101.6 x 127 mm (4 ”x 5”) in size. The sample is then placed under a pressure setting of approximately 552 kPa (80 psi) for approximately 10 s. Finally, temporary support is highlighted. The sample is conditioned at room temperature for 48 hours. The fabric with the attached label is then tested using the washing and drying method approximately 5 times. All examples did not show any visible changes such as discoloration, wrinkling, or edge lifting. EXAMPLE 50
    [00086] This example uses a sheet of PET HFM coated with example 43 at 20 g / m2 as the temporary support, white base AQ with 4% APR 202 as a layer of white paint at a thickness of 25 microns, and the example 27 as the adhesive. A 25.4 mm by 203.2 mm (1 "by 8") strip of the label sample was cut and laminated on a Cheminstruments stainless steel panel through the adhesive side with a 101.6 mm free end ( 4 ”). The free end was attached to the Instron 5542 jaws for a 90-degree detach test at a rate of 304.8 mm (12 inches) per minute. An average detachment force (F1) of 1.1 N / cm (2.89 N / in) was recorded to highlight the temporary support of the label. The same sample was laminated over a stainless steel panel using double-sided tape through the PET HFM side. A silicone-coated PET release was used to laminate on the adhesive side. The detachment force (F3) was 0.02 N / cm (0.07 N / in) to detach the silicone-coated PET release liner from the adhesive side. This example illustrates that the adhesion of the PSA release to the PSA (F3) is less than that of the temporary release in the paint layer (F1). And that the adhesion force of the temporary release on the paint layer (F1) is less than that of the adhesive on the final substrate (F2), even under a wet condition, which is at least approximately 3.9 N / cm (10 N / in).
    [00087] All features described in the specification, including the claims, summary, and drawings, and all steps of any method or process described, can be combined in any combination, except combinations where at least some of those features and / or steps are mutually exclusive. Each feature described in the specification, including the claims, summary, and drawings, may be replaced by alter-native features that serve the same, equivalent, or similar purpose, unless otherwise expressly stated. Thus, unless expressly stated otherwise, each characteristic described is an example only of a generic series of equivalent or similar characteristics.
    [00088] The above detailed description of the present invention is provided for purposes of illustration, and is not intended to be exhaustive or to limit the invention to the specific embodiments described. The modalities can provide different capabilities and benefits, depending on the configuration used to implement the key features of the invention. Consequently, the scope of the invention is defined only by the following claims.
    权利要求:
    Claims (13)
    [0001]
    1. Pressure-sensitive label for labeling a substrate comprising: a pressure-sensitive adhesive with a first surface and a second surface; and at least one paint association layer; characterized by the fact that said ink association layer contacts the first surface of the pressure sensitive adhesive; where the pressure sensitive adhesive has a wet adhesion greater than approximately 393.7 N / cm (10 N / in) as measured according to the method disclosed in the present application, where the pressure sensitive adhesive (PSA) is one of an emulsion-based polymer or solvent-based polymer, and comprises 5% to 50% by weight of a hydrogenated resin ester based adhesive, from a layer of printable film, a layer of ink or combinations thereof.
    [0002]
    2. Pressure sensitive label according to claim 1, characterized by the fact that the ink layer is selected from a group that includes digital inks, dye inks, pigment inks, wax inks, UV inks, liquid toner inks, inkjet inks, laser toners, marker inks, analog inks, flexo inks, engraving inks, liquid inks, solid inks, thermography powders, screen printing inks, or combinations thereof .
    [0003]
    3. Pressure-sensitive label, according to claim 1, characterized by the fact that the pressure-sensitive adhesive is digital or analog printable.
    [0004]
    4. Pressure-sensitive label according to claim 1, characterized by the fact that it still comprises a temporary support that has an upper surface and a lower surface, the lower surface is in contact with at least one association layer of ink.
    [0005]
    5. Pressure sensitive label according to claim 4, characterized by the fact that the temporary support has a release of PSA coated on the top surface and the PSA label is self-rolled or stacked with the PSA in contact with the upper surface of the temporary support.
    [0006]
    6. Pressure-sensitive label according to claim 1, characterized by the fact that it additionally comprises: a PSA release coating, in contact with the second surface of the pressure-sensitive adhesive.
    [0007]
    7. Pressure-sensitive label according to claim 1, characterized by the fact that the pressure-sensitive adhesive is cross-linked.
    [0008]
    8. Pressure sensitive label according to claim 1, characterized by the fact that the printable film is selected from the group that includes polyurethane, EVA, PET, fabric, synthetic leather, suede, foam, special paper, polypropylene, polyethylene, polyolefin, inkjet printable, toner printable, PVC, non-pvc film, bamboo textiles, biodegradable polymers, PLA, and woven and non-woven materials.
    [0009]
    9. Pressure sensitive label according to claim 1, characterized by the fact that it still comprises a functional layer selected from the group that includes RFID components, bar codes, identification components, indication components, detection components , marking components, tracking components, temperature sensing components and authentication components.
    [0010]
    10. Process of applying a cold transfer pressure sensitive label, characterized by the fact that it comprises the steps of: providing a cold transfer pressure sensitive label as defined by claim 6, applying indices to the ink association layer, peel off the PSA release liner, and apply the label to a pressure washable substrate.
    [0011]
    Process for applying a pressure sensitive label according to claim 10, characterized in that the pressure sensitive label additionally includes a temporary support.
    [0012]
    12. Process of applying a pressure-sensitive label according to claim 10, characterized by the fact that it additionally comprises: applying a functional layer on the index after the step of applying the label on a pressure washable substrate.
    [0013]
    13. Process for applying a sensitive label according to claim 12, characterized in that the functional layer is a varnish, a protective coating, a reflection coating or a spark solution
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    法律状态:
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-05-28| B06T| Formal requirements before examination [chapter 6.20 patent gazette]|
    2020-04-28| B07A| Technical examination (opinion): publication of technical examination (opinion) [chapter 7.1 patent gazette]|
    2020-09-15| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|
    2020-12-29| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-02-09| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 25/05/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US12/787,459|2010-05-26|
    US12/787,459|US10029816B2|2010-05-26|2010-05-26|Pressure sensitive labels for use in a cold transfer method and process for making|
    PCT/US2011/037827|WO2011150000A2|2010-05-26|2011-05-25|Pressure sensitive labels for use in a cold transfer method and process for making|
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