JP2014163013A - Synthetic leather - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a synthetic leather which is used as a fabric for portable miscellaneous goods, a fabric for furniture, a fabric for flooring materials, and a fabric for ornament parts, and is capable of clearly providing an unpredictable design display that is rich in a three-dimensional appearance due to an embossment, and has pearl-like glittering properties.SOLUTION: A flexible laminated body is composed of a fiber fabric as a substrate, a colored resin layer formed on one surface of the fiber fabric, and one or more glittering resin layers that cover the colored resin layer. The glittering resin layer includes pearl like interfering particles and has a transparency of 20-60% of visible light transmittance (JIS Z8722). The glittering resin layer has a design part including a recessed part and a non-recessed part. The height difference between the recessed part and the non-recessed part is within the range of 0.3 mm-3.0 mm.

Description

  The present invention relates to a synthetic leather having a pearly luster, such as a bag, a bag, a pouch, a wallet, a regular case, a business card holder, a fabric for portable goods such as a chair or a sofa, a fabric for a furniture such as a chair or a sofa, a doormat, It can be used for flooring fabrics such as rug mats, fabrics for decorative parts such as clothing and shoes, and fabrics for decorative parts for pet items such as collars and reeds. It relates to a synthetic leather with possible pearly glitter.

  A glittering sheet in which a pearl pigment is kneaded into a thermoplastic resin film is used for many purposes. In these application examples, at least one of pattern printing, embossing and metal thin film formation is applied to the surface of a plastic sheet produced by kneading a pearl pigment, and the dispersion density of the pearl pigment and the orientation direction of the layer surface are taken as a part. By making it different, a decorative sheet (Patent Document 1) in which a three-dimensional effect is generated inside the sheet is disclosed. In addition, the present applicant has previously provided a transparent colored layer on the surface of a dark-colored open base fabric as a film material having excellent color changeability depending on the viewing direction, and further has a dichroic interference mica titanium (pearl pigment) on the surface. A film material provided with a glittering layer containing) was proposed. However, in Patent Document 1, the means for changing the dispersion density of the pearl pigment and the orientation direction of the layer surface to a part is that the plastic kneaded with the pearl pigment is changed into a sheet while changing conditions such as the processing temperature and the rotation speed of the roll. It is difficult to reproduce the dispersion density and the non-uniform orientation in the orientation because it depends on the means to be molded, and when the film material of Patent Document 2 is used as a sewing product such as a bag or a wallet, the light transmittance is insufficient. As a result, there has been a problem that the color changeability is not fully exhibited. Further, even when embossed stamps of brands and designs are applied to these sheets and film materials, the stamps are inconspicuous. Therefore, there has been no synthetic leather that is a film material using a pearl pigment and is capable of expressing a surprising and rich design by embossing.

Japanese Patent Laid-Open No. 5-220916 JP 2002-242085 A

  The present invention includes fabrics for portable goods such as bags, bags, pouches, wallets, periodic holders, business card holders, furniture fabrics such as chairs and sofas, flooring fabrics such as entrance mats and rug mats, clothing and shoes, etc. Providing pearl glittering synthetic leather that can be used for decorative part fabrics, pet part decorative fabrics such as collars and reeds, and has a rich three-dimensional embossing and unambiguous design display. Is.

  The present invention provides a flexible laminate comprising a fiber fabric as a base material, a colored resin layer provided on one surface of the fiber fabric, and one or more glittering resin layers covering the colored resin layer. In the body, the glittering resin layer includes pearl-like interference particles and has translucency, and the glittering resin layer has a design portion composed of a depressed portion and a non-depressed portion, and the difference in the depressed height is 0. It has been found that by making the thickness 3 mm to 3.0 mm, it is possible to clearly define the design and design, and the above-described problems have been solved.

  That is, the synthetic leather of the present invention has a fiber cloth as a base material, a colored resin layer provided on one surface of the fiber cloth, and one or more glittering resin layers covering the colored resin layer. A flexible laminate, wherein the glitter resin layer includes pearl-like interference particles and has a light transmittance of 20 to 60% (JIS Z8722), and the glitter resin layer is depressed. It is preferable that the design part which consists of a part and a non-depression part has, and the depression height difference is 0.3 mm-3.0 mm. This makes it possible to clearly define the design and design.

  In the synthetic leather of the present invention, it is preferable that the non-depressed portion of the glitter resin layer is composed of a foam, and the depressed portion of the glitter resin layer is composed of a non-foam. This makes it possible to clearly define the design and design.

  The synthetic leather of the present invention preferably has a Munsell lightness of 4 or less and a Munsell saturation of 6 or more of the colored resin layer, and the depressed portion of the glitter resin layer is more highly colored than the non-depressed portion. This makes it possible to clearly define the design and design.

  The synthetic leather of the present invention has a Munsell lightness of 7 to 9.5 and a Munsell saturation of 0 to 3 of the colored resin layer, and the non-depressed portion of the glitter resin layer preferably develops higher color than the depressed portion. . This makes it possible to clearly define the design and design.

  In the synthetic leather of the present invention, it is preferable that the glittering resin layer has a two-layer structure or a three-layer structure and includes pearl-like interference particles having different hues. This makes it possible to clearly define the design and design.

  In the synthetic leather of the present invention, it is preferable that a transparent protective layer made of a film or a coating film is provided on the entire surface of the glitter resin layer. As a result, antifouling properties, abrasion resistance, and scratch resistance can be imparted.

The synthetic leather of the present invention preferably has a thermoplastic resin coating layer on the back surface of the flexible laminate.
Thereby, the heat weldability of the synthetic leather of the present invention is enabled.

  According to the present invention, synthetic leather can be obtained that makes the expression of design and design easy to understand, so that these can be used for bags, bags, pouches, wallets, periodic holders, business card holders, and other portable miscellaneous goods, chairs, etc. It can be used for furniture fabrics such as sofas, flooring fabrics such as entrance mats and rug mats, fabrics for decorative parts such as clothing and shoes, and fabrics for decorative parts such as collars and reeds. Enables unexpected design display.

The figure showing an example of the cross section of the synthetic leather of this invention The figure showing an example of the cross section of the synthetic leather of this invention The figure showing an example of the cross section of the synthetic leather of this invention The figure showing an example of the cross section of the synthetic leather of this invention The figure showing an example of the cross section of the synthetic leather of this invention The figure showing an example of the cross section of the synthetic leather of this invention The figure showing an example of the design display of the synthetic leather of this invention The figure showing an example of the design display of the synthetic leather of this invention

  The synthetic leather of the present invention is provided with a fiber resin as a base material, a colored resin layer provided on one surface of the fiber cloth, and one or more glittering resin layers covering the colored resin layer. A flexible laminate, wherein the glitter resin layer includes pearl-like interference particles and has a light transmittance of 20 to 60% (JIS Z8722), and the glitter resin layer is a depressed portion. And a design portion composed of a non-depressed portion, and the depressed height difference is 0.3 mm to 3.0 mm, and particularly preferably, the non-depressed portion of the glitter resin layer is formed of a foam, and The depressed portion of the glitter resin layer is made of a non-foamed material. Furthermore, it is preferable that the Munsell lightness of the colored resin layer is 7 to 9.5 and the Munsell saturation is 0 to 3, or the Munsell lightness of the colored resin layer is 4 or less and the Munsell saturation is 6 or more.

  The fiber fabric constituting the base material used for the synthetic leather of the present invention may be any of woven fabric, knitted fabric and non-woven fabric. Examples of the woven fabric include known woven fabrics such as plain weave, twill weave, satin weave and imitation weave. Of these, plain weave fabric is preferred because the weft strength and stretch balance of the resulting synthetic leather are equivalent. The woven fabric is woven with warps and wefts, and is composed of warps and warps in which the gaps between the yarns are evenly arranged in parallel. 35 / inch), or a non-openly woven fabric having a porosity of less than 5% (number of yarns to be driven is 30 to 100 / inch), and the thickness and mass are not particularly limited. The open-mesh fabric is suitable for a base laminate fabric for heat laminating or bonding a colored resin layer film, and the non-open-woven fabric is impregnated with a solution of a thermoplastic resin composition forming a colored resin layer, and coated or hot-melt coated. Suitable for industrial fabrics. In addition, these fiber fabrics have water-repellent treatment to prevent water penetration from the fiber cross section, flame-proof treatment to give self-extinguishing properties when flaming, and adhesion to the colored resin layer. An adhesion treatment for imparting can also be performed.

  Examples of the warp and weft forming the fiber fabric include monofilaments, multifilaments, short fiber spun yarns, and the types of fibers are specifically kenaf, cotton, polypropylene, polyethylene, polyester (polyethylene terephthalate, polyethylene). Naphthalate, polybutylene terephthalate), nylon, vinylon, acrylic, aromatic polyester, aromatic polyamide, aromatic heterocyclic polymer (polyimidazole, polyoxazole, etc.), glass, silica, basalt, alumina, boron, Examples thereof include fibers such as carbon and stainless steel, mixed fibers thereof, and core-sheath fibers. Polyester (polyethylene terephthalate), polypropylene, and nylon fibers are preferable for general use. In particular, synthetic leather obtained by using fiber yarns of aromatic polyesters, aromatic polyamides, aromatic heterocyclic polymers, etc. can be given heat resistance and blade-proofing properties, and glass, silica, basalt Fire resistance can be imparted to synthetic leather obtained by using fiber yarns made of alumina, carbon or the like.

  The warp and weft yarns forming the fiber fabric are preferably multifilament yarns or short fiber spun yarns. In the case of multifilament yarns, the number of filaments is 30 to 300, and the fineness is 138 to 2223 dtex (decitex), preferably 277 to 1112 dtex multifilament yarn fibers are preferred because they are excellent in the handleability of synthetic leather from which a woven fabric can be obtained that is woven with 10 to 50 threads per inch. Further, in the case of short fiber spun yarn, those in the range of 10th (591 dtex), 20th (295 dtex), 30th (197 dtex), 40th (148 dtex), 60th (97 dtex), especially 10th (591 dtex), It is excellent in handling of synthetic leather from which short fiber spun yarns in the range of 14th (422 dtex), 16th (370 dtex), 20th (295 dtex), 24th (246 dtex), 30th (197 dtex) and the like can be obtained.

  Resin as a component forming the colored resin layer in the synthetic leather of the present invention includes vinyl chloride resin (containing plasticizer), vinyl chloride copolymer resin, polyethylene resin, polypropylene resin, ethylene-vinyl acetate copolymer resin, Blends of polypropylene resins and hydrogenated styrene copolymer resins, urethane resins, urethane elastomers, acrylic resins, acrylic elastomers, polyester elastomers, fluorine elastomers, silicone elastomers, and their thermoplastic resins Among the crosslinked elastomers, vinyl chloride resin (containing a plasticizer), polyethylene resin, polypropylene resin, urethane resin and the like are particularly preferable because of excellent texture, printability, wear resistance, and the like. The colored resin layer is a colored film or colored sheet formed by a calendar method, a T-die extrusion method, or a coating method, and particularly has a thickness of 0.1 mm to 2.0 mm, preferably 0.2 mm to 1.0 mm. In the present invention, the most preferable example is a polyester (polyethylene terephthalate) fiber fabric as a base material, and a colored soft polyvinyl chloride resin film or sheet having a thickness of 0.2 mm to 0.5 mm on one side is used as an adhesive or means for thermal lamination. A colored resin layer is formed by laminating the layers.

  In the colored resin layer, known organic pigments and inorganic pigments may be used alone or in combination in any amount. Examples of organic pigments include azo pigments (insoluble monoazo pigments, insoluble disazo pigments, azo lake pigments, condensed azo pigments, metal complex azo pigments), phthalocyanine pigments (phthalocyanine blue, phthalocyanine green), dyed lake pigments (acid dye lakes). Pigments, basic dye lake pigments), condensed polycyclic pigments (anthraquinone pigments, thioindigo pigments, perinone pigments, perylene pigments, quinacridone pigments, dioxazine pigments, isoindolinone pigments, quinophthalone pigments, iso Indoline pigments), other nitroso pigments, alizarin lake pigments, metal complex azomethine pigments, aniline pigments, etc. are used alone or in combination. Examples of inorganic pigments include metal oxides, metal sulfides, metal sulfates, metal carbonates, metal hydroxides, chromic acid metal salts, spinel structure oxides, rutile structure oxides, or the like. It is a combination. In particular, the white pigment is used alone or in combination, such as titanium dioxide and zinc oxide, and other calcium carbonate, magnesium carbonate, barium sulfate, silica, aluminum hydroxide, magnesium hydroxide, magnesium oxide and the like. As the black pigment, carbon black, acetylene black, aniline black, titanium black, graphite or the like can be used alone or in combination.

  The hue of the colored resin layer is not limited, but it is preferable that the colored resin layer has Munsell lightness 7 to 9.5 and Munsell saturation 0 to 3, particularly white or white (slightly colored white). . The design display of the synthetic leather obtained by having such a colored resin layer can be made clear. This is because the thickness of the depressed portion of the glitter resin layer is thinner than that of the non-depressed portion, so that the pearl interference particles contained in the glitter resin layer are strongly influenced by the light reflection effect of the colored resin layer, and the pearl interference particles Because it prevents the color of the pearl, it is less noticeable than the strong pearl color of the non-recessed part. On the other hand, the colored resin layer can have a Munsell lightness of 4 or less and a Munsell saturation of 6 or more, and in particular, a light absorption layer of black or dark color (dark gray, dark green, dark brown, etc.) is also possible. . The design display in the synthetic leather obtained by having such a colored resin layer is made clear. This is because the thickness of the depressed portion of the glitter resin layer is thinner than that of the non-depressed portion, and the depressed portion exhibits a clear pearl coloring property by being strongly influenced by the light-absorbing colored resin layer. By making it less noticeable than the color of the pearl pigment in the depression.

  In the synthetic leather of the present invention, the resin as a component forming the glittering resin layer is vinyl chloride resin (containing plasticizer), vinyl chloride copolymer resin, polyethylene resin, polypropylene resin, ethylene-vinyl acetate copolymer resin. , Blends of polypropylene resins and hydrogenated styrene copolymer resins, urethane resins, urethane elastomers, acrylic resins, acrylic elastomers, polyester elastomers, fluoroelastomers, silicone elastomers, and their thermoplastic resins In particular, a vinyl chloride resin (containing a plasticizer), a polyethylene resin, a polypropylene resin, a urethane resin, and the like are preferable because of excellent texture, printability, wear resistance, and the like. The glitter resin layer is a sheet containing pearl-like interference particles by a calendar method, a T-die extrusion method, or a coating method, and particularly has a thickness of 0.1 mm to 3.0 mm, preferably 0.2 mm to 1.5 mm. . In the present invention, the most preferable example is that a polyester (polyethylene terephthalate) fiber fabric is used as a base material, and a colored soft polyvinyl chloride resin film or sheet having a thickness of 0.2 mm to 0.5 mm is laminated on one side, and 0% thereon. A glittering resin layer is formed by laminating a glittering soft polyvinyl chloride resin layer of 0.5 mm to 1.0 mm by means of coating or heat laminating. The visible light transmittance (JIS Z8722) of the glittering resin layer is preferably 20 to 60%, particularly preferably 25 to 50%. The higher the visible light transmittance of the glitter resin layer, the greater the contribution to the color contrast effect or silhouette expression effect of the pearl-like interference particles due to the better influence of the Munsell brightness and Munsell saturation of the colored resin layer as the base. .

  The glittering resin layer contains 0.5 to 5% by mass, preferably 1 to 2.5% by mass, of pearl-like interference particles based on the mass of the glittering resin layer in the above resin alone or in combination. Examples of the pearl-like interference particles include surface-treated pearl pigments in which the surface of mica scales having an average particle diameter of 5 to 100 μm is coated with titanium dioxide at a coverage of 43 to 80%. For example, dichroic interference mica titanium whose reflection color is adjusted to 43% of titanium dioxide and whose transmission color is violet is violet. Further, there is dichroic interference mica titanium whose reflection color is adjusted to 47% and the reflection color is orange and the transmission color is green. Further, dichroic interference mica titanium whose reflection color is adjusted to 52% and the transmission color is yellow is exemplified. Further, there is dichroic interference mica titanium whose reflection color is adjusted to 57% and the reflection color is green and the transmission color is red. These dichroic interference mica titanium can express a surprising visual effect by combining two or more different hues and blending two or more different hues. In order to express such unexpected visual effects, it is also effective to use monochromatic pearl pigments such as silver white mica titanium and / or chromatic mica iron oxide in combination with dichroic interference mica titanium. is there. Silver-white mica titanium is a monochromatic pearl pigment obtained by coating titanium dioxide with a coverage of 12 to 42% on the surface of mica scales having a particle size of 5 to 100 μm. As the chromatic mica iron oxide, the surface of a mica scale having an average particle diameter of 5 μm to 100 μm is coated with titanium dioxide at a coverage of 12 to 50%, and further coated with iron (II) oxide at a coverage of 2 to 30%. It is a monochromatic pearl pigment or a bronze monochromatic pearl pigment in which iron (II) is coated at a coverage of 20 to 60% on the surface of a mica scale having an average particle diameter of 5 to 100 μm. The color tone can be controlled by adding a small amount of the organic pigment used in the colored resin layer in the present invention to the glitter resin layer.

  Further, the glittering resin layer is composed of “non-foaming / non-foaming”, “foaming / non-foaming”, “non-foaming / foaming”, “foaming / foaming” two layers or “non-foaming / non-foaming / non-foaming”, “ It consists of three layers: non-foam / non-foam / foam, non-foam / foam / non-foam, foam / foam / non-foam, foam / non-foam / foam, and foam / foam / foam Each glittering resin layer preferably contains pearly interference particles having different hues. These include, for example, a light-transmitting glittering resin layer containing dichroic interference mica titanium having a reflection color of gold and a transmission color of violet as an outermost layer, and a reflection color of blue and a transmission color of yellow in the lower layer. A two-layer structure in which a light-transmitting glossy resin layer containing titanium having a reactive interference mica is formed, and a layer having a reflection color of green and a transmission color of red under the two-layered glitter resin layer. The thing of the 3 layer structure which formed the light-transmitting glittering resin layer containing chromatic interference mica titanium is mentioned. Mixing of these pearl-like interference particles, or mixed pearl pigments containing silver-white mica titanium and / or chromatic mica iron oxide as a component of 70-99% by weight and the remaining 1-30% by weight of the pearl-like interference particles The amount is adjusted according to the thickness of the glitter resin coating layer, that is, when the thickness of the glitter resin coating layer is about 0.1 mm to 0.5 mm, the blending amount of the pearl-like interference particles or the mixed pearl pigment is selected. In the range of 1 to 5% by mass with respect to the mass of the resin coating layer, and when the thickness of the glitter resin coating layer is about 1 mm to 3 mm, the blending amount of the pearl-like interference particles or the mixed pearl pigment is changed to that of the glitter resin coating layer. A range of 0.5 to 1% by mass with respect to the mass is preferable from the viewpoint of maintaining the light transmittance of the glittering resin coating layer while maintaining the color development of the glittering resin coating layer. The visible light transmittance (JIS Z8722) of the glitter resin layer having such a two-layer structure or a three-layer structure is preferably 20 to 60%. If the visible light transmittance is less than 20%, it may be difficult to reflect the color development of the lower layer on the outermost layer of the synthetic leather. If the visible light transmittance exceeds 60%, the color developability of the outermost synthetic leather layer may be inferior. The color tone can be controlled by adding a small amount of the organic pigment used in the colored resin layer in the present invention to the glitter resin layer.

  In the synthetic leather of the present invention, the glittering resin layer has a recessed portion and a non-recessed portion to form a visually unnoticeable design base, and the depressed height difference is 0.3 mm to 3.0 mm, preferably 0.5 mm to 1.0 mm. If the depressed height difference is less than 0.3 mm, the resultant synthetic leather may make it difficult to display a clear design. Moreover, when the depression height difference exceeds 3.0 mm, not only the feeling of the obtained synthetic leather is deteriorated, but also foreign matter may be caught in the depression depending on the design. The depressed portion and the non-depressed portion of the glitter resin layer are formed by, for example, pressing a mold in which a design pattern is engraved on the glitter resin layer (uneven height difference of 0.5 mm to 5.0 mm) at a temperature higher than the softening temperature of the glitter resin layer. After the contact, it can be recessed by removing the mold. A design pattern stamp by such concave molding can be formed by continuously embossing a number of design stamps with an embossing roll. In particular, the depressed portion and the non-depressed portion of the glittering resin layer are preferably configured such that the non-depressed portion is made of a foam and the depressed portion is made of a non-foamed body. In such a configuration, first, the entire glittering resin layer is formed of a foam having a thickness of 0.5 mm to 5.0 mm, and a mold having a design pattern engraved (difference in height of irregularities of 0.5 mm to 5.0 mm) is glittered. After pressing above the softening temperature of the resin layer, it can be recessed by removing the mold. In such a concave mold, the boundary between the depressed portion and the non-depressed portion does not necessarily have to be a cliff shape with a right angle as in the shape image of “concave”, but a mortar shape, or a boundary between the depressed portion and the non-depressed portion. May be rounded steps. In addition, such a design pattern stamp can be continuously formed with a large number of concave stamps by a relief embossing roll. In this way, the appearance of the design pattern is composed of multiple concavities such as designs, symbols, logo marks, ASCII art, etc., with concavities as outlines (Hiragana, Katakana, Alphabet, Kanji, Foreign characters, Ancient characters) Etc.), monograms, pictograms, numbers, symbols, geometric patterns, emoticons, combinations of design characters, and the like.

  The total volume of the bubble cells in the glitter resin layer by the foam is 20 to 50% by volume with respect to the total volume of the glitter resin layer. By containing 20 to 50% by volume of bubble cells, the hue of the colored resin layer is made difficult to interfere with the glittering resin layer as a bulky irregular reflection structure that lowers the density of the pearl-like interference particles. By embossing the glittering resin layer of this foam with a mold stamp or a relief embossing roll, the cell is completely crushed in the recess, and the depression (non-foam) of an arbitrary depth is formed in the foam. Form in part. Examples of the foam cell include a trace caused by the generation of a pyrolysis gas of the chemical foaming agent, an air entrainment caused by stirring of the viscous resin, and an addition of balloon particles obtained by expanding the gas-encapsulated microcapsules. As the chemical blowing agent, a thermal decomposition type chemical blowing agent such as azodicarboxamide, oxybisbenzenesulfonyl hydrazide, benzenesulfonyl hydrazide, p-toluenesulfonyl hydrazide, diazoaminobenzene, azobisisobutyronitrile and the like can be used. The bubble cell may be an open cell that partially shares a space with an adjacent bubble cell or a closed cell. When the cell content is less than 20% by volume, the resultant synthetic leather may make it difficult to display a clear design. On the other hand, if the foamed cell content exceeds 50% by volume, the abrasion strength of the glittering resin layer is lowered and the handleability of the synthetic leather may be deteriorated. As a means for applying a concave mold other than the method of thermally pressing the relief embossing on the foam as described above, a benzotriazole-based compound, trimellitic anhydride, or the like is used on the surface of the foam precursor. It is possible to use chemical embossing that performs foaming by heating after printing with a transparent ink contained as a suppressor and foams only the portion other than the printing portion. The concave embossing by chemical embossing is generally formed in a gentle mortar shape.

  It is preferable to provide a transparent protective layer made of a film or a coating film on the entire surface of the glitter resin layer from the viewpoint of imparting antifouling properties, abrasion resistance, and scratch resistance. The resin that forms the film and the coating film is vinyl chloride resin (containing plasticizer), vinyl chloride copolymer resin, olefin resin (polyethylene resin, polypropylene resin), olefin copolymer resin (ethylene-vinyl acetate copolymer) Coalesce resin), urethane resin, urethane copolymer resin (acryl-urethane copolymer resin), acrylic resin, acrylic copolymer resin (acryl-silicon copolymer resin, acrylic-fluorine copolymer resin), In thermoplastic resins such as vinyl acetate resin, vinyl acetate copolymer resin, polyester resin, polyester copolymer resin, vinylidene fluoride resin, fluorine-containing copolymer resin, and cross-linked products of these thermoplastic resins However, vinyl chloride resin (containing plasticizer), urethane resin, fluorine-containing copolymer resin, etc. The preferred is excellent, such as the 耗性. The transparent protective layer is a film and a multilayer film by a calendar method or a T-die extrusion method, or a coating film by a coating method casting method, and particularly has a thickness of 0.005 mm to 0.5 mm, preferably 0.01 mm to 0.2 mm. . These transparent protective layers contain at least known UV absorbers such as benzophenone-based UV absorbers, benzotriazole-based UV absorbers, and cyanoacrylate-based UV absorbers in order to improve the light resistance of the glitter resin layer. The hindered amine light stabilizer can be used in combination, and a known antioxidant can be used if necessary. The total amount of these added is preferably 0.05 to 5% by mass with respect to the weather-resistant protective layer. Further, on the surface of these transparent protective layers, a thin film made of one or more selected from fine particle silica (particularly colloidal silica), photocatalytic substance (particularly titanium dioxide), and organic silicate compound (hydrolyzed condensate of methyl or ethyl silicate). By forming the synthetic leather, it is possible to obtain a synthetic leather having further excellent antifouling properties.

  The synthetic leather of the present invention can be provided with a thermoplastic resin coating layer on the back surface as necessary. This enables a heat welding process (hot air fusion, thermal iron fusion, high frequency fusion, etc.) by overlaying the synthetic leathers of the present invention. As the resin for forming the thermoplastic resin coating layer, one or two or more types can be selected from the above-described colored resin layer and resin for forming the glitter resin layer, and if necessary, the thermoplastic resin coating layer May contain any amount of known organic pigments and inorganic pigments alone or in combination.

Hereinafter, the synthetic leather of the present invention will be specifically described.
1-4 is a figure showing an example of the cross section of the synthetic leather of this invention. The synthetic leather (1) in FIG. 1 is provided with a colored resin layer (3-1) having Munsell lightness of 7 to 9.5 and Munsell saturation of 0 to 3 on one surface of the fiber fabric (2). A flexible laminate (1) in which a glittering resin layer (4) is provided on (3-1) and a transparent protective layer (5) is further provided on the surface of the glittering resin layer (4). In particular, the glittering resin layer (4) is composed of a non-foamed depression (4-1-1) and a non-foaming non-depression (4-2-1), and (4-3) is a depression height difference. Is expressed.

  The synthetic leather (1) of FIG. 2 is provided with a colored resin layer (3-1) having Munsell lightness of 7 to 9.5 and Munsell saturation of 0 to 3 on one surface of the fiber fabric (2). A flexible laminate (1) in which a glittering resin layer (4) is provided on (3-1) and a transparent protective layer (5) is further provided on the surface of the glittering resin layer (4). In particular, the glittering resin layer (4) is composed of a non-foaming depression (4-1-1) and a foaming non-depression (4-2-2), and (4-3) represents the depression height difference. Is.

  The synthetic leather (1) in FIG. 3 is obtained by replacing the colored resin layer (3-1) in FIG. 2 with a colored resin layer (3-2) having Munsell lightness of 4 or less and Munsell saturation of 6 or more.

  The synthetic leather (1) in FIG. 4 is obtained by providing a thermoplastic resin coating layer (6) on the back surface of the flexible laminate (1) in FIG.

  The synthetic leather (1) shown in FIG. 5 is composed of the glitter resin layer of the flexible laminate (1) shown in FIG. 1, with the upper layer (4A) and the lower layer (4B), and the colored resin shown in FIG. The layer (3-1) is replaced with a colored resin layer (3-2) having a Munsell lightness of 4 or less and a Munsell saturation of 6 or more.

  The synthetic leather (1) in FIG. 6 has a glossy resin layer of the flexible laminate (1) in FIG. 3 having a two-layer structure, the upper layer being (4A), and the lower layer being (4B). 1 to 6, the depiction of the cliff-like depression height difference (4-3) having a right angle is an explanatory concept, and the depression (4-1) and the non-depression (4-2) according to the present invention. The boundary may be a mortar shape or a rounded step.

[Example 1]
<Fiber fabric>
Plain woven spun cloth made of polyester (PET) short fiber spun yarn [Yarn density: 44 warp 20th yarn (590dtex) /2.54cm x 40 weft 20th yarn (590dtex) /2.54cm: porosity 4.2%: thickness 0.65 mm: mass 228 g / m ² ] was used.
<Colored resin layer>
A white soft vinyl chloride resin film of the following composition 1 having a thickness of 0.15 mm by calendering is laminated on one surface of the plain woven spun cloth by heat fusion using a laminator under hot roll conditions at 160 ° C. to give a colored resin layer Formed. The white colored resin layer had Munsell lightness of 9.5 and Munsell saturation of 0.5.
[Composition 1]
White soft vinyl chloride resin composition
100 parts by mass of vinyl chloride resin (degree of polymerization 1050)
DOP (plasticizer) 55 parts by mass
Epoxidized soybean oil (stabilizer) 4 parts by mass
Ba-Zn (stabilizer) 2 parts by mass
Titanium oxide (white pigment) 10 parts by mass <brilliant resin layer>
The surface of the colored resin layer is heat-sealed with a soft vinyl chloride resin film containing pearl-like interference particles having a thickness of 0.35 mm composed of the following formulation 2 using a laminator under hot roll conditions at 160 ° C. Was laminated to form a glittering resin layer. The visible light transmittance of the glittering resin layer was 24%.
[Composition 2]
Soft vinyl chloride resin-containing composition containing pearl-like interference particles
100 parts by mass of vinyl chloride resin (degree of polymerization 1050)
DOP (plasticizer) 55 parts by mass
Epoxidized soybean oil (stabilizer) 4 parts by mass
Ba-Zn (stabilizer) 2 parts by mass
Pearl-like interference particles 5 parts by mass
(43% titanium dioxide coverage, gold reflection color and transmission color
(Violet dichroic interference mica titanium: average particle size 45μm)
Benzotriazole-based compound (ultraviolet absorber) 0.2 parts by mass <transparent protective layer>
On the surface of the glittering resin layer, a transparent acrylic resin coating film having a thickness of 5 μm composed of the following formulation 3 was provided by gravure coating to form a transparent protective layer.
[Composition 3]
Composition containing transparent acrylic resin
100 parts by mass of acrylic resin (PMMA)
Benzotriazole-based compound (ultraviolet absorber) 0.2 parts by mass
Solvent (methyl ethyl ketone) 800 parts by mass A synthetic leather having a thickness of 1.15 mm and a mass of 1205 g / m ² was obtained by the above process.
<design>
High-frequency welding with a metal mold (4cm x 22.5cm) engraved in a convex shape with the letters "HIRAOKA" (character size 2.5cm x 2.5cm x 7 letters) on the surface of the glossy resin layer of the synthetic leather Using an apparatus, the stamping press was performed under the conditions of an anode current of 1.0 A, a fusion time of 5 seconds, and a cooling time of 5 seconds, and the letter “HIRAOKA” was shaped into a concave shape, and the depression and the non-depression were depressed. A synthetic leather having a height difference of 0.2 mm (FIG. 1) was obtained. Except for the character part of “HIRAOKA” of this synthetic leather, the change of the observation angle revealed an unexpected interference with gold color and violet. Further, the visible light transmittance of this non-depressed portion was 24%, and the visible light transmittance of the depressed portion was 38%.

[Example 2]
Using the same plain woven spun cloth as in Example 1, a white soft vinyl chloride resin film having the same thickness of 0.15 mm as in Example 1 consisting of Formulation 1 was laminated on one surface of this plain woven spun cloth in the same manner as in Example 1. A colored resin layer having a Munsell lightness of 9.5 and Munsell saturation of 0.5 was formed.
<Brightness resin layer>
The surface of the colored resin layer is heat-sealed with a laminator having a hot roll condition of 160 ° C. and containing a pearl-like interference particle by a calendar process of 0.35 mm thickness composed of the following formulation 4 Was laminated to form a precursor of the glitter resin foam layer. The visible light transmittance of this precursor was 24% translucency.
[Composition 4]
Soft vinyl chloride resin-containing composition containing pearl-like interference particles
100 parts by mass of vinyl chloride resin (degree of polymerization 1050)
DOP (plasticizer) 55 parts by mass
Epoxidized soybean oil (stabilizer) 4 parts by mass
Ba-Zn (stabilizer) 2 parts by mass
Azodicarboxamide (Pyrolytic chemical foaming agent) 10 parts by mass
Pearl-like interference particles 5 parts by mass
(Titanium dioxide coverage 52%, blue reflection color and yellow transmission color
Dichroic interference mica titanium: average particle size 45μm)
Benzotriazole-based compound (ultraviolet absorber) 0.2 parts by mass <transparent protective layer>
On the surface of the glitter resin layer, a transparent acrylic resin coating film having a thickness of 5 μm comprising Formulation 3 was provided by gravure coating, and a transparent protective layer was formed in the same manner as in Example 1.
By the above process, a synthetic leather having a thickness of 1.15 mm and a mass of 1205 g / m ² is obtained, and this is left standing in a hot air oven at 200 ° C. for 1 minute to foam the glittering resin layer to about three times the thickness. A synthetic leather having a thickness of 1.85 mm and a mass of 1190 g / m ² was obtained.
<design>
The same “HIRAOKA” characters as in Example 1 were shaped into a concave shape on the surface of the glittering resin layer of the synthetic leather, and synthetic leather (FIG. 2) having a depressed height difference between the depressed portion and the non-depressed portion of 0.85 mm. Obtained. Except for the character part of “HIRAOKA” of this synthetic leather, the change of the observation angle caused an unexpected interference with blue and yellow alternately. Further, the visible light transmittance of this non-depressed portion was 16%, and the visible light transmittance of the depressed portion was 37%.

[Example 3]
A synthetic leather having a thickness of 1.85 mm and a mass of 1190 g / m ² was obtained in the same manner as in Example 2 except that the colored resin layer (white color) of Example 2 was changed to a black colored resin layer of Formulation 5 below. This synthetic leather is a synthetic leather (FIG. 3) in which the letter “HIRAOKA” is shaped into a concave shape as in Example 2, and the height difference between the depressed portion and the non-depressed portion is 0.85 mm. The visible light transmittance of the portion was 16%, and the visible light transmittance of the depressed portion was 37%. Only the character part of “HIRAOKA” of this synthetic leather exhibited an unexpected property of interfering with blue and yellow alternately by changing the observation angle.
<Colored resin layer>
A 0.15 mm thick black soft vinyl chloride resin film composed of the following formulation 5 was laminated by thermal fusion using a laminator under hot roll conditions at 160 ° C. to form a colored resin layer. The black colored resin layer had Munsell lightness of 1 and Munsell saturation of 9.
[Formulation 5]
Black soft vinyl chloride resin composition
100 parts by mass of vinyl chloride resin (degree of polymerization 1050)
DOP (plasticizer) 55 parts by mass
Epoxidized soybean oil (stabilizer) 4 parts by mass
Ba-Zn (stabilizer) 2 parts by mass
Carbon black (black pigment) 5 parts by mass

[Example 4]
The same procedure as in Example 2, except that a thermoplastic resin coating layer made of a calendered film having a thickness of 0.3 mm according to the following formulation 6 was provided on the back surface of the synthetic leather of Example 2, was 1.80 mm in thickness and 1360 g / mass in mass. A synthetic leather of m ² was obtained. This synthetic leather is a synthetic leather (FIG. 4) in which the letter “HIRAOKA” is shaped in a concave shape as in Example 2, and the depression height difference between the depression and the non-depression is 0.85 mm. The visible light transmittance of the portion was 16%, and the visible light transmittance of the depressed portion was 37%. Except for the character part of “HIRAOKA” of this synthetic leather, the change of the observation angle caused an unexpected interference with blue and yellow alternately.

[Composition 6]
Formulation composition for thermoplastic resin coating layer
100 parts by mass of vinyl chloride resin (degree of polymerization 1050)
DOP (plasticizer) 55 parts by mass
Epoxidized soybean oil (stabilizer) 4 parts by mass
Ba-Zn (stabilizer) 2 parts by mass
Titanium oxide (white pigment) 10 parts by mass

[Example 5]
Blend 4 of the glittering resin layer of Example 2 (dichroic interference mica titanium having a reflection color of blue and a transmission color of yellow) and blending 7 (dichroic interference mica titanium having a reflection color of orange and a transmission color of green) A synthetic leather having a thickness of 1.85 mm and a mass of 1190 g / m ² was obtained in the same manner as in Example 2 except that the colored resin layer was changed to a black colored resin layer according to Formulation 5 of Example 3. This synthetic leather is a synthetic leather (FIG. 2) in which the letter “HIRAOKA” is shaped in a concave shape as in Example 2, and the height difference between the depressed portion and the non-depressed portion is 0.85 mm. The visible light transmittance of the portion was 16%, and the visible light transmittance of the depressed portion was 36%. Only the character portion of “HIRAOKA” of this synthetic leather exhibited an unexpected property of interfering with orange and green alternately by changing the observation angle.
[Composition 7]
Soft vinyl chloride resin-containing composition containing pearl-like interference particles
100 parts by mass of vinyl chloride resin (degree of polymerization 1050)
DOP (plasticizer) 55 parts by mass
Epoxidized soybean oil (stabilizer) 4 parts by mass
Ba-Zn (stabilizer) 2 parts by mass
Azodicarboxamide (Pyrolytic chemical foaming agent) 10 parts by mass
Pearl-like interference particles 5 parts by mass
(Titanium dioxide coverage 47%: orange reflection color and transmission color
Green dichroic interference mica titanium: average particle size 45μm)
Benzotriazole-based compound (ultraviolet absorber) 0.2 parts by mass

[Example 6]
The glitter resin layer of Example 1 has a [Formulation 2] non-foamed / [Formulation 8] non-foamed two-layer structure (layer thickness 0.2 mm / layer thickness 0.2 mm), and the colored resin layer is blended in Example 3. A synthetic leather having a thickness of 1.90 mm and a mass of 1255 g / m ² was obtained in the same manner as in Example 1 except that the black colored resin layer according to 5 was used. This synthetic leather is a synthetic leather (FIG. 2) in which the letter “HIRAOKA” is shaped into a concave shape as in Example 2 and the depression height difference between the depression and the non-depression is 1.0 mm. The visible light transmittance of the portion was 13%, and the visible light transmittance of the depressed portion was 34%. Only the character part of “HIRAOKA” of this synthetic leather interferes with green and orange alternately due to the change of the observation angle, and the part other than the character part of “HIRAOKA” interferes with blue and yellow alternately due to the change of the observation angle. Unexpectedness was expressed.
[Composition 8]
Soft vinyl chloride resin-containing composition containing pearl-like interference particles
100 parts by mass of vinyl chloride resin (degree of polymerization 1050)
DOP (plasticizer) 55 parts by mass
Epoxidized soybean oil (stabilizer) 4 parts by mass
Ba-Zn (stabilizer) 2 parts by mass
Pearl-like interference particles 5 parts by mass
(Titanium dioxide coverage 47%: orange reflection color and transmission color
Green dichroic interference mica titanium: average particle size 45μm)
Benzotriazole-based compound (ultraviolet absorber) 0.2 parts by mass

[Example 7]
The glittering resin layer of Example 2 has a [Formulation 4] foam / [Formulation 9] two-layer structure of foaming (layer thickness 0.2 mm / layer thickness 0.2 mm), and the colored resin layer is according to Formulation 5 of Example 3. A synthetic leather having a thickness of 1.90 mm and a mass of 1255 g / m ² was obtained in the same manner as in Example 2 except that the black colored resin layer was used. This synthetic leather is a synthetic leather (FIG. 2) in which the letter “HIRAOKA” is shaped into a concave shape as in Example 2 and the depression height difference between the depression and the non-depression is 1.0 mm. The visible light transmittance of the portion was 11%, and the visible light transmittance of the depressed portion was 34%. Only the character part of “HIRAOKA” of this synthetic leather interferes with green and orange alternately due to the change of the observation angle, and the part other than the character part of “HIRAOKA” interferes with blue and yellow alternately due to the change of the observation angle. Unexpectedness was expressed.
[Composition 9]
Soft vinyl chloride resin-containing composition containing pearl-like interference particles
100 parts by mass of vinyl chloride resin (degree of polymerization 1050)
DOP (plasticizer) 55 parts by mass
Epoxidized soybean oil (stabilizer) 4 parts by mass
Ba-Zn (stabilizer) 2 parts by mass
Azodicarboxamide (Pyrolytic chemical foaming agent) 10 parts by mass
Pearl-like interference particles 5 parts by mass
(Titanium dioxide coverage 47%: orange reflection color and transmission color
Green dichroic interference mica titanium: average particle size 45μm)
Benzotriazole-based compound (ultraviolet absorber) 0.2 parts by mass

[Example 8]
The thickness of the glossy resin layer of Example 7 was the same as that of Example 7 except that [Formulation 2] non-foamed / [Formulation 7] foamed two-layer structure (layer thickness 0.2 mm / layer thickness 0.2 mm) was used. A synthetic leather having a thickness of 1.70 mm and a mass of 1255 g / m ² was obtained. This synthetic leather is a synthetic leather (FIG. 2) in which the letter “HIRAOKA” is shaped into a concave shape as in Example 2 and the depression height difference between the depression and the non-depression is 1.0 mm. The visible light transmittance of the portion was 11%, and the visible light transmittance of the depressed portion was 34%. Only the character part of “HIRAOKA” of this synthetic leather interferes with green and orange alternately due to the change of the observation angle, and the part other than the character part of “HIRAOKA” interferes alternately with gold and violet due to the change of the observation angle. Unexpectedness was expressed.

[Comparative Example 1]
In the synthetic leather of Example 1, a synthetic leather having a thickness of 1.0 mm and a mass of 1025 g / m ² was obtained in the same manner as in Example 1 except that the colored resin layer (white) was omitted. By omitting the colored resin layer that affects the glitter resin layer, the color development effect of the characters “HIRAOKA” is assimilated with the color developability of the character peripheral portion, making it difficult to recognize the character design of “HIRAOKA”.

[Comparative Example 2]
In the synthetic leather of Example 3, a synthetic leather having a thickness of 1.70 mm and a mass of 1055 g / m ² was obtained in the same manner as in Example 3 except that the colored resin layer (black) was omitted. By omitting the colored resin layer that affects the glitter resin layer, the color development effect of the characters “HIRAOKA” is assimilated with the color developability of the character peripheral portion, making it difficult to recognize the character design of “HIRAOKA”.

[Comparative Example 3]
In the synthetic leather in which the characters “HIRAOKA” of Example 1 were molded, except for the concave molding so that the height difference between the depressed part and the non-depressed part of the glittering resin layer was 0.1 mm. Identical. When the characters “HIRAOKA” are shaped, there is little difference in the height of the depression, so the color development effect of the characters “HIRAOKA” is assimilated with the color developability of the peripheral part of the characters, and the character design of “HIRAOKA” is extremely difficult to recognize. It was.

[Comparative Example 4]
In the synthetic leather in which the characters “HIRAOKA” of Example 3 were shaped, except for the concave shaping so that the height difference between the depressed portion and the non-depressed portion of the glittering resin layer was 0.1 mm. Identical. When the characters “HIRAOKA” are shaped, there is little difference in the height of the depression, so the color development effect of the characters “HIRAOKA” is assimilated with the color developability of the peripheral part of the characters, and the character design of “HIRAOKA” is extremely difficult to recognize. It was.

[Comparative Example 5]
In the synthetic leather of Example 1, the bright resin layer formulation 2 was changed to the composition of the following formulation 10, and the visible light transmittance of the glitter resin layer was changed to 10%. A synthetic leather having a thickness of 1.15 mm and a mass of 1205 g / m ² was obtained. As in Example 1, the synthetic leather in which the letters “HIRAOKA” were shaped had a reduced visible light transmittance of the glitter resin layer, and the glitter resin layer became less affected by the hue of the underlying colored resin layer. Thus, the color development effect of the characters “HIRAOKA” and the color developability around the characters are extremely low in brightness, making it difficult to recognize the character design of “HIRAOKA”.
[Composition 10]
Soft vinyl chloride resin-containing composition containing pearl-like interference particles
100 parts by mass of vinyl chloride resin (degree of polymerization 1050)
DOP (plasticizer) 55 parts by mass
Epoxidized soybean oil (stabilizer) 4 parts by mass
Ba-Zn (stabilizer) 2 parts by mass
Pearl-like interference particles 5 parts by mass
(43% titanium dioxide coverage, gold reflection color and transmission color
(Violet dichroic interference mica titanium: average particle size 45μm)
Titanium oxide (white pigment) 10 parts by mass
Benzotriazole-based compound (ultraviolet absorber) 0.2 parts by mass

[Comparative Example 6]
In the synthetic leather of Example 3, the thickness of the glossy resin layer was changed to the composition of Formulation 11 and the visible light transmittance of the glittering resin layer was changed to 10%. A synthetic leather of 15 mm and a mass of 1205 g / m ² was obtained. As in Example 1, the synthetic leather in which the letters “HIRAOKA” were shaped had a reduced visible light transmittance of the glitter resin layer, and the glitter resin layer became less affected by the hue of the underlying colored resin layer. Thus, the color development effect of the characters “HIRAOKA” and the color developability around the characters are extremely low in brightness, making it difficult to recognize the character design of “HIRAOKA”.
[Composition 11]
Soft vinyl chloride resin-containing composition containing pearl-like interference particles
100 parts by mass of vinyl chloride resin (degree of polymerization 1050)
DOP (plasticizer) 55 parts by mass
Epoxidized soybean oil (stabilizer) 4 parts by mass
Ba-Zn (stabilizer) 2 parts by mass
Azodicarboxamide (Pyrolytic chemical foaming agent) 10 parts by mass
Pearl-like interference particles 5 parts by mass
(43% titanium dioxide coverage, gold reflection color and transmission color
(Violet dichroic interference mica titanium: average particle size 45μm)
Titanium oxide (white pigment) 10 parts by mass

[Comparative Example 7]
In the synthetic leather of Example 1, the glossy resin layer was changed from Formulation 2 to the composition of Formulation 12 below, and the visible light transmittance of the glossy resin layer was set to 70%, as in Example 1, A synthetic leather having a thickness of 1.15 mm and a mass of 1205 g / m ² was obtained. As in Example 1, the synthetic leather in which the letters “HIRAOKA” were shaped had a reduced content of pearl-like interference particles, so that the underlying fiber fabric could be seen through, and the coloring effect of the letters “HIRAOKA” was reduced. The character design “HIRAOKA” was difficult to recognize.
[Composition 12]
Soft vinyl chloride resin-containing composition containing pearl-like interference particles
100 parts by mass of vinyl chloride resin (degree of polymerization 1050)
DOP (plasticizer) 55 parts by mass
Epoxidized soybean oil (stabilizer) 4 parts by mass
Ba-Zn (stabilizer) 2 parts by mass
Pearl-like interference particles 0.5 parts by mass
(43% titanium dioxide coverage, gold reflection color and transmission color
(Violet dichroic interference mica titanium: average particle size 45μm)
Benzotriazole-based compound (ultraviolet absorber) 0.2 parts by mass

[Comparative Example 8]
In the synthetic leather of Example 3, the thickness of the glitter resin layer was changed to the composition of the following formulation 13 and the visible light transmittance of the glitter resin layer was changed to 70%. A synthetic leather having a thickness of .85 mm and a mass of 1190 g / m ² was obtained. As in Example 1, the synthetic leather in which the letters “HIRAOKA” were shaped had a reduced content of pearl-like interference particles, so that the underlying fiber fabric could be seen through, and the coloring effect of the letters “HIRAOKA” was reduced. The character design “HIRAOKA” was difficult to recognize.
[Formulation 13]
Soft vinyl chloride resin-containing composition containing pearl-like interference particles
100 parts by mass of vinyl chloride resin (degree of polymerization 1050)
DOP (plasticizer) 55 parts by mass
Epoxidized soybean oil (stabilizer) 4 parts by mass
Ba-Zn (stabilizer) 2 parts by mass
Azodicarboxamide (Pyrolytic chemical foaming agent) 10 parts by mass
Pearl-like interference particles 0.5 parts by mass
(43% titanium dioxide coverage, gold reflection color and transmission color
(Violet dichroic interference mica titanium: average particle size 45μm)
Benzotriazole-based compound (ultraviolet absorber) 0.2 parts by mass

[Reference Comparative Example 1]
In the synthetic leather of Example 1, the thickness is 1 as in Example 1 except that the colored resin layer is a composition of the following formulation 14 and the Munsell lightness of this colored resin layer is 5 and Munsell saturation 8 A synthetic leather having a thickness of 120 mm and a mass of 1205 g / m ² was obtained. As in Example 1, the synthetic leather in which the letters “HIRAOKA” were shaped had a halfway hue in which the hue of the colored resin layer was neither bright nor dark, so the coloring effect of the letters “HIRAOKA” was the color development around the character. The character design of “HIRAOKA” was difficult to recognize because of assimilation.
[Formulation 14]
Composition containing soft vinyl chloride resin
100 parts by mass of vinyl chloride resin (degree of polymerization 1050)
DOP (plasticizer) 55 parts by mass
Epoxidized soybean oil (stabilizer) 4 parts by mass
Ba-Zn (stabilizer) 2 parts by mass
Titanium oxide (white pigment) 10 parts by mass
Carbon black (black pigment) 5 parts by mass

[Reference Comparative Example 2]
In the synthetic leather of Example 3, the same procedure as in Example 3 except that the colored resin layer is a composition of Formulation 14 and the Munsell lightness of the colored resin layer is 5 and the Munsell saturation is 8. A synthetic leather having a thickness of 85 mm and a mass of 1190 g / m ² was obtained. As in Example 1, the synthetic leather in which the letters “HIRAOKA” were shaped had a halfway hue in which the hue of the colored resin layer was neither bright nor dark, so the coloring effect of the letters “HIRAOKA” was the color development around the character. The character design of “HIRAOKA” was difficult to recognize because of assimilation.

  As apparent from Examples 1 to 8 and Comparative Examples 1 to 8, since the synthetic leather of the present invention can provide a synthetic leather that can clearly define the design and design, these bags, bags , Fabric for portable goods such as pouches, wallets, periodic wallets, business card holders, furniture fabrics such as chairs and sofas, flooring fabrics such as doormats and rug mats, fabrics for decorative parts such as clothing and shoes, collars and It can be used for decorative parts for pets such as reeds, and can display designs that are rich in three-dimensional and surprising.

1 Synthetic leather (flexible laminate)
2 Fiber fabric 3 Colored resin layer 3-1 Munsell lightness 7 to 9.5, Munsell saturation 0 to 3
3-2 Munsell lightness 4 or less, Munsell saturation 6 or more 4 Glitter resin layer 4A Upper layer 4B Lower layer 4-1 Depressed part 4-1-1 Non-foamed depressed part 4-1-2 Foamed depressed part 4-2 Non-depressed part 4-2-1 Non-foamed non-depressed part 4-2-2 Foamed non-depressed part 4-3 Depression height difference 4-4 Air bubbles 5 Transparent protective layer 6 Thermoplastic resin coating layer

Claims (7)

  A flexible laminate in which a colored resin layer is provided on one surface of a fiber fabric and one or more glittering resin layers covering the colored resin layer are provided using a fiber fabric as a base material. The glitter resin layer includes pearl-like interference particles and has a visible light transmittance (JIS Z8722) of 20 to 60%, and the glitter resin layer further includes a depressed portion and a non-depressed portion. A synthetic leather having a design portion and having a depressed height difference of 0.3 mm to 3.0 mm.   The synthetic leather according to claim 1, wherein the non-depressed portion of the glitter resin layer is made of a foam, and the depressed portion of the glitter resin layer is made of a non-foam.   The synthetic leather according to claim 1 or 2, wherein the colored resin layer has a Munsell lightness of 4 or less and a Munsell saturation of 6 or more, and a depressed portion of the glitter resin layer develops a higher color than a non-depressed portion.   The synthetic leather according to claim 1 or 2, wherein the colored resin layer has Munsell lightness of 7 to 9.5 and Munsell saturation of 0 to 3, and the non-depressed portion of the glitter resin layer develops a higher color than the depressed portion. .   The synthetic leather according to any one of claims 1 to 4, wherein the glittering resin layer has a two-layer structure or a three-layer structure, and includes pearly interference particles having different hues.   The synthetic leather according to any one of claims 1 to 5, wherein a transparent protective layer comprising a film or a coating film is provided on the entire surface of the glitter resin layer.   The synthetic leather according to any one of claims 1 to 6, further comprising a thermoplastic resin coating layer on a back surface of the flexible laminate.