WO2009107246A1 - 皮革様シートおよびその製造方法 - Google Patents
皮革様シートおよびその製造方法 Download PDFInfo
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- WO2009107246A1 WO2009107246A1 PCT/JP2008/053726 JP2008053726W WO2009107246A1 WO 2009107246 A1 WO2009107246 A1 WO 2009107246A1 JP 2008053726 W JP2008053726 W JP 2008053726W WO 2009107246 A1 WO2009107246 A1 WO 2009107246A1
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- WIPO (PCT)
- Prior art keywords
- leather
- sheet
- porous layer
- layer
- image
- Prior art date
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Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/30—Ink jet printing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
- Y10T428/24438—Artificial wood or leather grain surface
Definitions
- the present invention relates to a leather-like sheet having a fine image on its surface. More particularly, the present invention relates to a leather-like sheet having a clear image and excellent physical properties and a method for producing the same. Background art
- a leather product drawn by an ink jet method on a quality ink receiving layer is described.
- the porosity in this leather product is a nanometer order pore that depends on alumina hydrate. Since this leather product does not have sufficient ink acceptability (dyeability) of the microporous ink receiving layer, even if this method is applied to the artificial leather surface, it is difficult to form a clear pattern. The color tone tends to be deep. Also, with this method, the alumina hydrate is easy to fall off due to friction, and is not practical enough to be applied to artificial leather processed into sports shoes and the like in terms of wear resistance.
- Patent Document 2 a leather-like sheet having a transparent or semi-transparent protective layer drawn on an easily dyed layer on a fibrous substrate by using an ink jet method is drawn. Method power 3 ⁇ 4
- this leather-like sheet uses dye ink, the light fastness is not sufficient, especially when processed into shoes for outdoor use, racing poles, or moss. It has the disadvantage that it cannot hold a delicate and clear image obtained by the ink jet method for a long time.
- pigment ink as a colorant instead of dye ink. This is because when the pigment ink is used in the ink jet system, it can be maintained for a long period of time even when the image is used outdoors.
- pigment ink there is a drawback that the surface wear resistance, peel resistance, and flex resistance are reduced. That is, when a pattern is applied to the leather surface with pigment ink, there is a drawback that the adhesion between the layer on which the pattern is applied and the adjacent layer becomes extremely weak due to the pigment particles that inhibit the adhesion.
- Patent Document 1 Japanese Patent Application Laid-Open No. 9 1 5 9 700
- Patent Document 2 Japanese Patent Application Laid-Open No. 11 1 1 5 8 7 8 2 Disclosure of Invention
- a further object of the present invention is to provide a method for producing the leather-like sheet.
- the present inventor has studied a method for forming a fine image on the surface of a leather-like sheet. As a result, when an open hole is formed on the surface of the porous layer of the leather-like sheet and an image is formed by the ink jet method, a surprisingly clear image is formed, and the image is firmly held on the porous surface. As a result, it was found that a leather-like sheet having excellent wear resistance, light fastness, color transfer resistance, abrasion resistance, peel resistance and flex resistance was obtained, and the present invention was completed.
- the present invention provides a leather-like sheath having (i) a fibrous substrate and (ii) a porous layer thereon, and has an open hole having a diameter of 1 xm or more on the surface of the porous layer,
- the surface of the porous layer is a leather-like sheet having an image with a resolution of 5 dots / mm or more.
- the present invention also comprises (i) forming a porous layer of a polymer elastic body on a fibrous substrate,
- Fig. 1 shows an example of the cross-sectional shape of the porous layer. 1 Fibrous substrate
- the leather-like sheet of the present invention has a porous layer on a fibrous substrate.
- a fiber assembly can be used as the fibrous substrate.
- the fiber assembly also includes a composite fiber assembly in which the fiber assembly is impregnated with a polymer elastic body.
- the fiber assembly is preferably one that has been conventionally used for artificial leather.
- Nonwoven fabrics and woven and knitted fabrics are examples of fiber assemblies.
- fibers constituting the fiber assembly include synthetic fibers such as polyester and polyamide, natural fibers such as cotton, hemp, and wool, or semi-synthetic fibers such as rayon. Also, a mixture of two or more of these may be used.
- the fibrous substrate is preferably a nonwoven fabric or a composite nonwoven fabric in which a nonwoven fabric is impregnated with a high molecular elastic body.
- the fiber assembly includes ultrafine fibers.
- the ultrafine fiber is a fiber having a single fiber degree of preferably 0.3 dtex or less, more preferably 0.1 to 0.001 dtex.
- the fiber assembly a nonwoven fabric in which ultrafine fibers are entangled is preferable.
- the surface of the obtained fibrous base becomes smooth, and it becomes possible to further enhance the fine pattern drawn by the inkjet method or the like.
- Such ultrafine fibers can be produced by a conventionally known method.
- a synthetic fiber can be produced by the sea-island spinning method, the mixed spinning method, the split-type composite spinning method, or the like.
- These fibers are made of a relatively thick parent fiber before ultrathinning into short fibers, which are then made into non-woven fabrics by opening with conventional card machines, etc., and entangled with needle machines, etc. Yotsute from fine fiber The resulting nonwoven fabric.
- the ultrafine method include a method of extracting or decomposing and removing components other than the ultrafine fiber from the parent fiber obtained by the sea-island spinning method and the mixed spinning method.
- a method of mechanically or chemically dividing the parent fiber obtained by the split type composite spinning method can be employed.
- polymer component to be extracted or decomposed and removed examples include polyethylene, polypropylene, polystyrene, and copolymers thereof.
- polymer component that becomes an ultrafine fiber examples include polyesters such as polyethylene terephthalate and polyethylene naphthalate, and polyamides such as nylon 6 and nylon 6,6.
- polyesters such as polyethylene terephthalate and polyethylene naphthalate
- polyamides such as nylon 6 and nylon 6,6.
- Examples of the composite fiber assembly composed of a fiber assembly and a polymer elastic body include a fiber assembly impregnated with a polymer elastic body, solidified, and dried.
- Examples of the polymer elastic body include polyurethane, polyester elastomer, polyamide elastomer, polyolefin elastomer, and synthetic rubber such as polybutadiene and polyisoprene. Of these, polyurethane is preferably used in terms of wear resistance, elastic recovery, flexibility, and the like.
- the polymer elastic body is subjected to impregnation as a solution or dispersion liquid dissolved or dispersed in an organic solvent.
- these polymers are preferably subjected to impregnation as an aqueous solution or water dispersion in order to protect the global environment and the working environment.
- the thickness of the fibrous substrate is preferably 0.2 to 5 mm, more preferably 0.4 to 2.5 mm.
- the leather-like sheet of the present invention has a porous layer on a fibrous substrate.
- the thickness of the porous layer is preferably in the range of 0.05 to 1.5 mm. If the thickness is less than 0.05111111, the unevenness of the fibrous base material cannot be concealed, and it is difficult to obtain surface smoothness. Further, if the thickness of the porous layer exceeds 1.5 mm, the texture as a leather-like sheet becomes rubbery, which is not preferable.
- the density of the porous layer is preferably 0.2 to 0.7 g Z cm 3 , more preferably 0. It is in the range of 3 to 0.5 g Z cm 3 . Within this range, the texture of the leather-like sheet is improved.
- the porous layer is preferably formed of a polymer elastic body.
- the polymer elastic body include those used for the composite fiber assembly used for the substrate.
- the porous layer is preferably made of polyurethane.
- polyurethane those used for artificial leather are preferable.
- the polyurethane include a thermoplastic polyurethane obtained by a polymerization reaction of an organic diisocyanate, a high molecular diol, and a chain extender.
- an organic diisocyanate an aliphatic, alicyclic or aromatic diisocyanate containing two isocyanate groups in the molecule is preferred.
- organic diisocyanates 4, 4'-diphenylmethane diisocyanate, P-phenylene diisocyanate, toluylene range
- diols containing 2 hydrogen atoms capable of reacting with isocyanates and having molecular weights of 500 or less such as ethylene glycol, 1,4-butanediol, hexamethylene glycol, xylylene glycol, cyclohexanediol, Neopentyl glycol and the like can be mentioned.
- a plurality of holes are formed in the porous layer and are randomly arranged.
- the diameter of the hole tends to be smaller as it is closer to the surface.
- Fig. 1 shows an example of the cross-sectional shape of the porous layer.
- the hole may be a communication hole or an independent hole.
- the texture of the leather-like sheet is preferably a communication hole.
- the surface of the porous layer has an open hole with a diameter of 1 / m or more.
- Open hole is a fibrous substrate F
- the leather-like sheet of the present invention has a fine image on the surface of the porous layer.
- the ink constituting the image enters the pores existing on the surface of the porous layer, so that the surface is worn unlike the case where the ink is simply applied to the flat surface. It is considered that the ink is prevented from falling off. Ink adhering to a flat surface is easy to peel off due to bending of the leather-like sheet, etc., but the leather-like sheet of the present invention is unlikely to peel off.
- the diameter of the open hole is preferably 1 to 1550 m, more preferably 3 to 100 m, and particularly preferably 10 to 80 m.
- the diameter is less than 1, the ink particles do not enter the pores effectively, and thus the wear resistance or peel strength intended by the present invention cannot be obtained.
- the ink particle diameter is large, and this is more remarkable.
- the average diameter of the open holes is preferably in the range of 1 to 100 zm, more preferably 5 to 70 m.
- the shape of the open holes on this surface is also related to the surface condition of the leather-like sheet.
- a leather-like sheet (artificial leather) with a silver tone that has a smooth silver surface there are few open holes.
- the number of open holes in the leather-like sheet with a silver tone is preferably in the range of 100 to 5, 000, more preferably 500 to 3, and 000,000 per 1 cm 2. is there.
- the average diameter of the open holes is preferably in the range of 5 to 70 m, more preferably 10 to 30 / m. When the number of open holes and the average diameter are within this range, an image with high resolution can be formed.
- the total area of the open holes relative to the projected area of the surface is preferably 1% or less.
- nubuck-like leather-like sheet artificial leather
- the leather-like sheet of the present invention is a nubuck-like leather-like sheet having a surface with many irregularities, a fine pattern is formed on the surface of the leather-like sheet when ink released from one direction such as an ink jet is used.
- the effect of surface irregularities does not significantly reduce the resolution of the image, and has the effect of improving durability such as fastness to wear.
- the leather-like sheet of the present invention has an image having a resolution of 5 dots Zmm or more, preferably 10 to 100 dots / mm, on the porous layer.
- a resolution of 5 dots Zmm or more preferably 10 to 100 dots / mm, on the porous layer.
- an ink jet printer of 3600 dots / in nch or 720 dots / in nch.
- the image is preferably a pigment ink.
- pigment ink When pigment ink is used, the particle size is larger than that of the dye ink, resulting in excellent light resistance and color transfer.
- the pigment any of water-based, solvent-based, and UV-curable types can be used.
- the leather-like sheet of the present invention is excellent in physical properties such as adhesive strength because an image is formed on a surface having an open hole rather than a smooth surface as in the prior art.
- the leather-like sheet of the present invention preferably has a protective layer on the porous layer having an image.
- the protective layer is preferably made of a polymer elastic body.
- the protective layer improves the physical properties and texture of leather-like leather and the wear resistance of the surface. In addition, sufficient adhesion between the protective layer and the porous layer can be obtained.
- the leather-like sheet of the present invention has irregularities due to open holes on the surface, and ink does not adhere much to the smooth surface, so that it has high wear resistance and peeling resistance despite the presence of images. An excellent protective layer can be formed.
- the elastic polymer used as the protective layer examples include polyurethane, polyester, polyester elastomer, polyamide, polyethylene, polypropylene, polyvinyl chloride, and polyvinylidene chloride.
- polyurethan is preferred from the viewpoint of physical properties.
- the polymer elastic body is preferably transparent or translucent.
- the thickness of the protective layer is preferred Or 0.0 l mm or more, more preferably 0.02 to: L mm.
- the protective layer can highly protect the image drawn on the surface of the leather-like sheet, and the abrasion resistance of the surface of the leather-like sheet is improved.
- the sheet when the sheet is bent, cracks are less likely to occur in the layer on which the pattern is drawn, and the sheet can be suitably used for applications requiring flexibility such as artificial leather.
- one or more protective layers made of a polymer elastic body may be further provided on the protective layer in contact with the printing surface.
- the physical properties and texture of the sheet can be improved.
- the polymer elastic body used include polyurethane, polyester, polyester elastomer, polyamide, polyethylene, polypropylene, polyvinyl chloride, and polyvinylidene chloride.
- Such a polymer elastic body layer may be bonded with an adhesive by forming a polymer elastic body layer on a release paper. Further, after forming a sheet having an image, it may be formed by coating an organic solvent solution, an organic solvent dispersion, an aqueous solution or an aqueous dispersion of a polymer elastic body on the surface and then drying. As a coating method, knife coating, roll coating, spraying, gravure coating or the like can be employed.
- the method for producing the leather-like sheet of the present invention includes the following:
- Step (i) is a step of forming a porous layer of a polymer elastic body on the fibrous substrate.
- the fibrous substrate is as described above.
- the fibrous substrate is preferably a nonwoven fabric or a composite nonwoven fabric in which a nonwoven fabric is impregnated with a polymer elastic body.
- polymer elastic bodies include polyurethane, polyester elastomer, Examples thereof include polyamide-based elastomers, polyolefin-based elastomers, and synthetic rubbers such as polybutadiene and polyisoprene. Of these, polyurethane is preferred from the standpoints of wear resistance, elastic recovery and flexibility.
- the porous layer can be formed by applying an organic solvent solution of a polymer elastic body on a substrate and then removing the solvent by a wet method or a dry method. Further, it can be formed by applying a thermally expansible force psel and an inert gas to a solution of a polymer elastic body and applying the solution onto a substrate.
- the porous layer is a good solvent for a polymer elastic body, and a solution in which the polymer elastic body is dissolved in an organic solvent compatible with water is applied on the substrate, and then immersed in a water bath to solidify. (Wet coagulation method).
- the porous layer is not compatible with water, but a solution obtained by dissolving or dispersing the polymer elastic body in an organic solvent that can dissolve or disperse the polymer elastic body is coated on the substrate, It can be formed by selectively evaporating organic solvent while preventing evaporation (dry porous molding method).
- the porous layer is formed by dispersing thermally expandable fine particle capsules in a water-soluble or liquid dispersion of a polymer elastic body, coating the substrate, and then expanding the thermally expandable capsules while drying. be able to. Further, it can be formed by mixing prepolymers having alcoholic hydrogen at the molecular terminals of the polymer elastic body, polyisocyanate and water, and immediately applying the mixture onto a substrate.
- the porous layer can be formed by dispersing an inert gas in a molten polymer elastic body, applying it on a substrate, and foaming it.
- the porous layer can be formed by applying a foamed polymer elastic solution or dispersion mixed with a chemical foaming agent on a substrate.
- the wet coagulation method is particularly preferable because the shape of the holes can be easily controlled and the communication holes from the fibrous base material can be easily obtained.
- the step (i) of forming the porous layer is as follows: (i-1) A solution containing a polymer elastic body and an organic solvent is applied on the fibrous substrate,
- the porous layer can be formed by directly coating on a fibrous substrate. Also peeling The porous film formed on the porous support may be bonded to the fibrous substrate with an adhesive or the like to form a porous layer.
- Step (ii) is a step of removing the surface layer of the porous layer to form an open hole.
- the porous layer has voids inside, but a surface of a polymer elastic body is formed on the surface. In this step, the surface layer is removed.
- the open holes can be formed by applying a solvent to the surface layer of the porous layer and dissolving and removing the surface layer.
- the solvent include a good solvent, a poor solvent, a mixed solvent of a good solvent and a poor solvent, or a mixed solvent of a good solvent and a non-solvent that constitutes the porous layer.
- the good solvent means a solvent capable of dissolving the polymer elastic body.
- the elastic polymer is a polyurethane synthesized from an aromatic organic disocene salt
- examples of the good solvent include polar solvents such as dimethylformamide, tetrahydrofuran, and dioxane.
- the poor solvent is a solvent that does not dissolve the polymer elastic body and that can be moisturized.
- examples of the poor solvent include ketones such as methyl ethyl ketone, alcohols such as isopropyl alcohol, and aromatic solvents such as toluene.
- the non-solvent is a solvent that does not dissolve or swell the polymer elastic body.
- water is a typical non-solvent.
- the coating pressure affects the size of the open hole formed. That is, if the coating pressure is large, the obtained open hole has a large radial force S, and if the coating pressure is small, the obtained open hole has a small diameter.
- Open pores with a diameter of 1 m or more can be formed on the surface of the porous layer by selecting an appropriate solvent, selecting a Daravia mesh roll, and optimizing the coating pressure.
- the average diameter of the open holes is preferably in the range of 1 to 100 / m, more preferably 5 to 70 m, and even more preferably 10 to 30 m.
- a leather-like sheet (artificial leather) with a silvery tone having a smooth surface can be produced. Further, according to this method, the open holes are likely to be uniform and variations can be suppressed. In addition, there are few open holes and it is easy to form images with extremely high resolution.
- the preferred number of open holes on the silver surface is in the range of 100 to 3 and 0,000 per 1 cm 2 .
- the total area of the open holes with respect to the projected area of the surface is preferably 1% or less.
- the open hole can be formed by grinding the surface of the porous layer and removing the surface layer. Grinding can be performed by grinding the surface of the porous layer with sandpaper or by cutting it off with a slicer.
- a leather-like sheet having a nubuck-like surface that is, a surface as if the open hole is a nap of natural leather.
- most of the leather-like sheet surface is an open hole.
- a fine pattern can be formed on the surface because the ink released from one direction is used. The effect of surface irregularities does not significantly reduce the resolution of the image and conversely improves durability such as fastness to wear.
- Step (iiii) is a step of forming an image by the ink jet method on the surface of the porous layer provided with open holes.
- a pigment ink is preferable from the viewpoint of light fastness and color fastness.
- particles are larger than dye ink. Therefore, light fastness and color transfer resistance are excellent.
- the leather-like sheet of the present invention has an image formed on a surface having an open hole rather than a smooth surface as in the prior art, the adhesive strength of the image is excellent.
- any of organic solvent type, aqueous type, and UV curing type can be used.
- the design can be selected arbitrarily, and characters, photos, design drawings, etc. can be printed.
- Printing can be performed by an inkjet printer.
- Inkjet Prints prints a pattern on the surface of the open hole based on data sent from the computer's image development unit.
- the resolution of the printed image is preferably 5 dots / mm or more, more preferably 10 to 100 dots / mm.
- To print an image with such a fine resolution it is possible to use a 3600 dot Zinchh or 720 dot / inchh ink jet print.
- this printed leather-like sheet can be used as a product as it is, it is preferable to heat-treat at 80 to 150 ° C. for about 20 to 60 seconds after forming an image with ink jet printing.
- a protective layer may be formed on the surface having an image.
- the protective layer may be formed by directly coating the surface of the leather-like sheet having an image with a polymer elastomer organic solvent solution, organic solvent dispersion, aqueous solution, or water dispersion, and then drying. it can.
- a coating method knife coating, roll coating, spraying or gravure coating can be employed.
- a polymer elastic layer may be formed on the release paper and bonded to a leather-like sheet having an image.
- the adhesive conventionally known adhesives can be used. Among them, polyurethane adhesive (polyisocyanate adhesive) is preferable.
- the adhesive can be either organic solvent-based or water-based.
- the thickness of the protective layer is preferably 0.1 mm or more, more preferably 0.0 2 to 1.
- the color transition to the surface of the white artificial leather after observing the color transition to the surface of the white artificial leather after being left under an atmosphere of 70 ° C for 3 days under a uniform load of 2 kg was observed.
- Grades that were not present were classified as Grade 5, those that had been vigorously shifted and colored on almost the entire surface of white artificial leather were classified as Grade 1, and those that had an area of 30% to 50% were classified as Grade 3.
- sand paper is HAND YROLLP 3 2 0 J (manufactured by NOR RT ON), and the size of the exposed urethane porous layer under the print of the worn part is the diameter. The number of times to reach 10 mm.
- Nylon 6 (intrinsic viscosity in m-cresol 1.1) dried at 120 ° C was fed to the extruder and melted. Separately, polyethylene terephthalate dried at 160 ° C (ultraviscosity in o-clonal phenol 0.64) was melted in an extractor separate from the above. Subsequently, the nylon-6 mixture melt flow was introduced into a spin block maintained at 275 ° C at a conduit polymer temperature of 250 ° C, and the polyethylene terephthalate melt flow was 300 ° C.
- the melt flows of both polymers are combined and discharged in a volume of 2 gZ per hole, air pressure 0.35 MPa (converted from discharge volume and composite fiber fineness)
- the spinning speed was about 4, 86 Om / min.
- the pulled composite fiber is subjected to a high voltage application at ⁇ 30 kV, collided with the dispersion plate together with the air flow, opened, and netted as a web consisting of peeled split composite fibers with a 16-split multi-layered cross section. Collected on the conveyor with a width of lm. Subsequently, the obtained web was passed through a pair of upper and lower embossed calender rolls heated to 100 ° C.
- the resulting web was entangled with a needle punch, then immersed in water, lightly squeezed with a mandala, and then peeled and splitted with a sheet impact squeezing machine to obtain an ultrafine fiber nonwoven fabric with a basis weight of 210 gZm 2 .
- this non-woven fabric was shrunk in 70 ° C. warm water to obtain an area of 60% of the area before shrinking.
- the obtained fiber assembly-1 had a basis weight of 350 g / m 2 , a thickness of 1.0 mm, and a fineness of 0.15 d t ex.
- DMF dimethylformamide
- the surface of the obtained composite fiber assembly 11 was a mixture of fibers and polyurethane, and had a basis weight of 455 gZm 2 and a thickness of 1. Omm.
- the sheet-1 of the surface, 40% methyl E chill ketone, dimethylformamide 6 0% of the mixture was applied at 4 k pressure GZcm 2 by a gravure coating machine (110 rolls using mesh), surface of the polyurethane porous layer was dissolved and dried to form an open hole, and a leather-like sheet 1 was obtained.
- the surface of the obtained leather-like sheet 11 was printed with a fine and clear image.
- the peel strength was 30.7 N / cm, and the peeled portion was the interface between the nonwoven fabric layer and the porous polyurethane layer when the peel strength was measured before ink jet printing.
- the wear resistance was 370 times. Table 1 shows the physical properties.
- Example 2 ⁇ Leather-like sheet 2>
- the diameter of the open holes on the surface was 50 nm on average.
- the surface was ground by adjusting the number of rotations and the gap between the rolls to obtain a perforated sheet-2.
- ODP I Dot Inch resolution landscape image using organic solvent pigment ink (ECO-SOLMAX) with an inkjet printer (Roland Corp., S J-545EX) on the surface of apertured sheet 2
- ECO-SOLMAX organic solvent pigment ink
- inkjet printer Roland Corp., S J-545EX
- heat treatment was performed at 120 for 1 minute to obtain a leather-like sheet (artificial leather) 1-2.
- the inks used were cyan ESL3-CY, magenta ESL3-MG, yellow ESL3 one YE, light cyan ESL3-LC, light magenta ESL3-LM, blue Rack ESL 3—BK.
- the surface of the obtained leather-like sheet 2 was printed with a fine and clear image.
- the peel strength was 31.2 N / cm, and the peeled portion was the interface between the nonwoven fabric layer and the polyurethane porous layer when the peel strength was measured before ink jet printing.
- the wear resistance was 3 20 times. Table 1 shows the physical properties.
- On release paper (R5 3 manufactured by Lintec Corporation), a thickener was mixed with 100 parts of a polyurethane resin 33% aqueous dispersion and stirred to adjust the viscosity to 8,00 CPS.
- the surface was coated with 80 gZm 2 of a preparation prepared by mixing 100 parts of a water-dispersible polyurethane-based adhesive with a thickener and adjusting the viscosity to 5,00 CPS. Then, it was dried at 90 ° C. for 2 minutes.
- Example 2 the polymer elastic body on the release paper and the leather-like sheet 1 obtained in Example 1 were overlapped, and a roll with a gap of 0.6 mm on the surface of the heating cylinder at a temperature of 110 ° C. Passed through and crimped. Then, after leaving for 2 days in an atmosphere at a temperature of 60 ° C., the release paper was peeled off to obtain a human leather-like sheet-3.
- a leather-like sheet 1 was obtained in the same manner as above except that the leather-like sheet 1 obtained in Example 2 was used. .
- Example 5 leather-like sheet 5> instead of using organic solvent-based pigment ink on the surface of the apertured sheet 2 obtained in Example 2, water-based pigment ink (PX-P ink) was used with an inkjet printer (manufactured by EPSON, PM-4000 PX).
- Example 2 Using a 720 DP I (dot / inch) resolution landscape print, and then performing a heat treatment at 120 ° C for 1 minute in the same manner as in Example 2 to create a leather-like sheet (artificial (Leather) Obtained 5.
- the inks used were Cyan ICC 23, Magenta I CM23, Yellow I CCY23, Light Cyan I CLC 23, Light Magenta I CLM23, Gray I CG Y23, Photo Black I CBK23, and Matt Black I CMB 23. .
- the surface of the obtained leather-like sheet 5 was printed with a fine and clear image.
- the peel strength was 30.8 cm / cm, and the peeled portion was the interface between the nonwoven fabric layer and the polyurethane porous layer when the peel strength was measured before ink jet printing.
- the wear resistance was 330 times. Table 1 shows the physical properties.
- Example 2 a UV curable pigment type was used with Inkjet Pudding Yuichi (Raster Pudding Yuichi, RP-720 UVZ). The same procedure as in Example 2 was performed except that a landscape image with a resolution of 720 DP I (dot Z inch) was printed using the inks (cyan, magenta, yellow, light cyan, light magenta, and black). 1 sheet (artificial leather) was obtained.
- the surface of the obtained leather-like sheet 16 was printed with a fine and clear image.
- the peel strength was 29.7 N Z cm, and the peeled portion was the interface between the nonwoven fabric layer and the porous polyurethane layer at the time of peel strength measurement before ink jet printing.
- the abrasion resistance was 590 times. Table 1 shows the physical properties. Comparative Example 1
- Example 1 An ink jet printer (Kuchiichi Land Co., Ltd.) was used in the same manner as in Example 1 except that the sheet 1 obtained in the middle of Example 1 was used instead of using the perforated sheet 1 of Example 1 for printing.
- SJ-545EX was used to print landscape images with a resolution of 720DP I (dot Z inch) using organic solvent pigment ink (ECO-S OLMAX) to obtain artificial leather.
- Nylon 6 and low-density polyethylene were mixed at 50/50, melted with an extruder, mixed, mixed and spun at 290 ° C, drawn, treated with oil, and cut to obtain 5.5 dte X, 5 1mm fiber. .
- the fiber assembly-7 was immersed in a 10% by weight polyurethane (manufactured by Dainippon Ink & Chemicals, Inc .; Crisbon TF 50 P) — DMF solution. Thereafter, excess solution on the surface of the fiber assembly was scraped off and squeezed at 90% of the substrate thickness to obtain a composite fiber assembly 1-7.
- a 10% by weight polyurethane manufactured by Dainippon Ink & Chemicals, Inc .; Crisbon TF 50 P
- the composite fiber assembly 7 was mixed with 20% by weight of polyurethane (Dainippon Ink Chemical Co., Ltd .; Crisbon TF 50P) — DMF solution (Toray Dow Corning as an additive) the manufacturing SH 28 PA using 3 parts of 0.5 to a solution 100 parts) were coated with a 800 gZm 2 basis weight.
- polyurethane Dainippon Ink Chemical Co., Ltd .; Crisbon TF 50P
- DMF solution Toray Dow Corning as an additive
- the manufacturing SH 28 PA using 3 parts of 0.5 to a solution 100 parts were coated with a 800 gZm 2 basis weight.
- the polyurethane was solidified by immersing it in water containing 5% DMF, thoroughly washing and removing DMF with water, and then dried at 120 ° C. to obtain a sheet on which a polyurethane porous layer was formed.
- the resulting sheet is repeatedly compressed and relaxed in hot toluene at 90 ° C, and the polyethylene component in the fiber is extracted and removed, and a polyurethane porous layer containing 0.03 dte X ultrafine fibers as the fibrous base material.
- a sheet of 7 was formed.
- the peel strength of the obtained sheet was 35.7 NZcm, which was strong enough to withstand the use of artificial leather and various other uses of artificial leather.
- the surface of the obtained leather-like sheet 7 was printed with a fine and clear image.
- the peel strength was 36.2 NZ cm, and the peeled portion was the interface between the nonwoven fabric layer and the polyurethane porous layer at the time of peel strength measurement before ink jet printing.
- the wear resistance was 440 times. Table 2 shows the physical properties.
- water-based pigment ink (PX-P) was used with an ink jet pudding (manufactured by EPSON, PM-4000 PX).
- Ink was used to print a leather-like sheet (artificial) in the same manner as in Example 7, except that a landscape image with a resolution of 720DP I (dot Z inch) was printed and heat-treated at 120 ° C for 1 minute.
- leather I got 8.
- the inks used were Cyan I CC 23, Magenta I CM 23, Yellow I CY23, Lysian I CLC23, Light Magenta I CLM23, Dale I CGY23, Photo Black I CBK23, and Matte Black I CMB23.
- the surface of the obtained leather-like sheet 18 was printed with a fine and clear image.
- the peel strength was 30.5 N / cm, and the peeled portion was the interface between the nonwoven fabric layer and the polyurethane porous layer at the time of peel strength measurement before ink jet printing.
- the wear resistance was 390 times. Table 2 shows the physical properties.
- Coat with 90 gZm 2 on a release paper (R53, manufactured by Lintec). Mix a thickener with 100 parts of a 33% aqueous dispersion of polyurethane resin and stir to adjust the viscosity to 8000 CPS. The film was then dried at 70 ° C. for 2 minutes and at 1 10 ° C. for 2 minutes to form a polymer elastic film. Furthermore, the surface was coated with 80 gZm 2 of a preparation prepared by mixing 100 parts of a water-dispersible polyurethane adhesive with a thickener and adjusting the viscosity to 5000 CPS.
- Example 7 On the surface of 7 with an ink jet printer (RP-720UVZ, manufactured by Raster Printer Co., Ltd.) UV curable pigment type ink (cyan, magenta, yellow, lei cyan) Using a light maze evening and black), a landscape picture with a resolution of 720DP I (dot Z inch) was printed, and nine leather-like sheets (artificial leather) were obtained.
- RP-720UVZ ink jet printer
- the polymer elastic body on the release paper and the leather-like sheet 9 were superposed and passed through a roll with a gap of 0.8 mm and pressed. Then, after leaving for 2 days in an atmosphere at a temperature of 60 ° C., the release paper was peeled off to obtain a leather-like sheet 9 having a protective layer.
- the obtained leather-like sheet 9 had a fine and clear image printed thereon, and had good light fastness and color fastness.
- the peel strength was 34.7 NZcm, and the peeled portion was the interface between the nonwoven fabric layer and the polyurethane porous layer at the time of peel strength measurement before ink jet printing.
- the wear resistance was 1> 360 times. Table 2 shows the physical properties Are also shown.
- dye ink I C5CL06 1 (: 181: 05) was used to print a landscape image with a resolution of 720 DP I (dots / inch), and a leather-like sheet (artificial leather) 10 was obtained in the same manner as in Example 7.
- the obtained leather-like sheet 10 had a peel strength of 32.9 N / cm, an abrasion resistance of 410 times, and a bending resistance of 12,500 times Comparative Example 2
- Example 10 As in Example 10, except that the sheet 7 obtained in Example 7 was used for printing instead of Sheet 7 obtained in the middle of Example 7 and having no holes in the surface.
- I C5CL06 and IC 1 BK05 dye ink
- EPSON, PM3700 C inkjet printer
- the surface of the resulting artificial leather was printed with a fine and clear image.However, when light fastness was measured, it was partially discolored and distant from the original color. Met. In addition, the color transfer resistance was also judged as grade 3, and the color was transferred to the surface of white artificial leather. In addition, the peel strength was as low as 11.5 NZcm, and the peeled portion was a pigment layer of ink jet printing, and it was not able to withstand the use of each application as artificial leather. The abrasion resistance was 32 times, which was caused by the peeling of the pigment layer. Table 2 shows the physical properties. Example 11 ⁇ Leather-like sheet 11>
- the surface of the obtained leather-like sheet 1 1 1 had a fine and clear image printed thereon.
- the peel strength was 31.8 N / cm, and the peeled portion was the interface between the nonwoven fabric layer and the polyurethane porous layer at the time of peel strength measurement before ink jet printing.
- the wear resistance was 680 times. Table 2 shows the physical properties.
- a release paper (ES 160 SK manufactured by Lintec), a solution containing 100 parts of Resamine LU-2109HV (22% polyurethane concentration manufactured by Dainichi Seika Co., Ltd.), 20 parts of DMF, and 10 parts of isopropyl alcohol is used. 100 gZm 2 The film was then coated and dried at 120 ° C for 2 minutes to form a polymer elastic film.
- the polymer elastic body on the release paper and the leather-like sheet 2 obtained in Example 2 were superposed and passed through a roll having a gap of 0.8 mm and pressed. After leaving it in an atmosphere at a temperature of 60 ⁇ for 2 days, the release paper was peeled off to obtain 1 leather-like sheet (artificial leather).
- the obtained leather-like sheet 12 had a fine and clear image printed thereon, and had good light fastness and color fastness. Peel strength is 34.5 2
- the leather-like sheet of the present invention can have a fine design.
- the leather-like sheet of the present invention is excellent in abrasion resistance, light fastness, color transfer resistance, abrasion resistance, peel resistance and bending resistance, and can withstand various uses of artificial leather.
- the image imparted to the leather-like sheet of the present invention can be freely and easily expressed as a design on the surface of the leather-like sheet by using a computer connected to an ink jet printer or the like. Therefore, sports shoes that have been used with leather-like seats, ordinary shoes, various sports poles, binding use, clothing, furniture, and vehicle / vehicle use can make use of the “design of your own” that emphasizes individuality. It becomes. Industrial applicability
- the leather-like sheet of the present invention can be used for sports shoes, general shoes, various sports poles, binding applications, clothing, furniture and vehicle applications.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08721146.2A EP2248941B1 (en) | 2008-02-26 | 2008-02-26 | Leather-like sheet and method of producing the same |
KR1020107012986A KR101426118B1 (ko) | 2008-02-26 | 2008-02-26 | 피혁형 시트 및 그 제조 방법 |
CN200880125210.6A CN101965423B (zh) | 2008-02-26 | 2008-02-26 | 皮革样片材及其制造方法 |
PCT/JP2008/053726 WO2009107246A1 (ja) | 2008-02-26 | 2008-02-26 | 皮革様シートおよびその製造方法 |
US12/919,411 US8465800B2 (en) | 2008-02-26 | 2008-02-26 | Leather-like sheet and process for the production thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2008/053726 WO2009107246A1 (ja) | 2008-02-26 | 2008-02-26 | 皮革様シートおよびその製造方法 |
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WO2009107246A1 true WO2009107246A1 (ja) | 2009-09-03 |
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ID=41015659
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PCT/JP2008/053726 WO2009107246A1 (ja) | 2008-02-26 | 2008-02-26 | 皮革様シートおよびその製造方法 |
Country Status (5)
Country | Link |
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US (1) | US8465800B2 (ja) |
EP (1) | EP2248941B1 (ja) |
KR (1) | KR101426118B1 (ja) |
CN (1) | CN101965423B (ja) |
WO (1) | WO2009107246A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013168653A1 (ja) * | 2012-05-11 | 2013-11-14 | 東レ株式会社 | シート状物およびその製造方法 |
JP2018150649A (ja) * | 2017-03-14 | 2018-09-27 | 株式会社クラレ | 銀付調人工皮革及びその製造方法 |
WO2020195850A1 (ja) * | 2019-03-27 | 2020-10-01 | 株式会社クラレ | 銀付調皮革様シート及び銀付調皮革様シートの評価方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2016134703A1 (de) | 2015-02-26 | 2016-09-01 | Dynamic Solar Systems Ag | Raumtemperatur-verfahren zur herstellung elektrotechnischer dünnschichten und verfahrensgemäss erhaltene dünnschichtfolge |
KR102007677B1 (ko) * | 2018-08-09 | 2019-08-06 | (주)위너스 | 고내구성 및 보온성 피혁의 제조 방법 |
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JPH06264370A (ja) * | 1993-03-10 | 1994-09-20 | Teijin Koodore Kk | 意匠外観の優れたヌバック調人工皮革 |
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KR100188849B1 (ko) * | 1993-03-10 | 1999-06-01 | 야스이 쇼사꾸 | 그레인상 인조가죽, 그 제조방법 및 제품 |
JP3046174B2 (ja) | 1993-03-10 | 2000-05-29 | 帝人株式会社 | 意匠効果の優れた銀付調人工皮革およびその製造方法 |
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JP3187357B2 (ja) * | 1997-11-10 | 2001-07-11 | 帝人株式会社 | 皮革様シート状物およびその製造方法 |
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CN1316118C (zh) * | 2003-09-09 | 2007-05-16 | 三芳化学工业股份有限公司 | 一种人工皮革以及其制造方法 |
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JP4536473B2 (ja) | 2004-10-01 | 2010-09-01 | セーレン株式会社 | 合成皮革およびその製造方法 |
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2008
- 2008-02-26 WO PCT/JP2008/053726 patent/WO2009107246A1/ja active Application Filing
- 2008-02-26 CN CN200880125210.6A patent/CN101965423B/zh active Active
- 2008-02-26 US US12/919,411 patent/US8465800B2/en active Active
- 2008-02-26 EP EP08721146.2A patent/EP2248941B1/en not_active Not-in-force
- 2008-02-26 KR KR1020107012986A patent/KR101426118B1/ko active IP Right Grant
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JPH06264370A (ja) * | 1993-03-10 | 1994-09-20 | Teijin Koodore Kk | 意匠外観の優れたヌバック調人工皮革 |
JPH0959700A (ja) | 1995-08-18 | 1997-03-04 | Toupe:Kk | インクジェット描画用皮革および皮革製品 |
JPH1136180A (ja) * | 1997-07-16 | 1999-02-09 | Kanebo Ltd | 加色した合成樹脂シート又は合成樹脂組成物、及びその製造方法 |
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Cited By (3)
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WO2013168653A1 (ja) * | 2012-05-11 | 2013-11-14 | 東レ株式会社 | シート状物およびその製造方法 |
JP2018150649A (ja) * | 2017-03-14 | 2018-09-27 | 株式会社クラレ | 銀付調人工皮革及びその製造方法 |
WO2020195850A1 (ja) * | 2019-03-27 | 2020-10-01 | 株式会社クラレ | 銀付調皮革様シート及び銀付調皮革様シートの評価方法 |
Also Published As
Publication number | Publication date |
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EP2248941A1 (en) | 2010-11-10 |
CN101965423A (zh) | 2011-02-02 |
EP2248941B1 (en) | 2013-05-01 |
KR20100126653A (ko) | 2010-12-02 |
CN101965423B (zh) | 2013-05-29 |
US20110008575A1 (en) | 2011-01-13 |
EP2248941A4 (en) | 2012-05-02 |
US8465800B2 (en) | 2013-06-18 |
KR101426118B1 (ko) | 2014-08-05 |
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