JP2020029083A - Leather laminate, sheet material, manufacturing method of leather laminate, resin impregnated aluminum unwoven fabric, manufacturing method of resin impregnated aluminum unwoven fabric, laminate, manufacturing method of laminate and case for electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a leather laminate, a method for manufacturing a leather laminate, a sheet material, a resin-impregnated aluminum non-woven fabric, a resin-impregnated aluminum non-woven fabric, and a laminate, which have good thermal conductivity and can be processed into various shapes. A body, a method for manufacturing a laminated body, and a case for an electronic device are provided. A leather laminate is characterized by having a leather and an aluminum nonwoven fabric bonded to the leather. Further, in the leather laminate, the aluminum nonwoven fabric has a plurality of aluminum fibers. The plurality of aluminum fibers are randomly oriented with gaps and bonded to form a sheet, and the gaps between the plurality of aluminum fibers are impregnated with resin, and the leather and the aluminum non-woven fabric are attached to each other. It is characterized by being combined. [Selection diagram] Fig. 2

Description

  The present invention relates to a leather laminate, a sheet material, a method for producing a leather laminate, a resin-impregnated aluminum nonwoven fabric, a method for producing a resin-impregnated aluminum nonwoven fabric, a laminate, a method for producing a laminate, and a case for an electronic device.

  Patent Literature 1 described below describes a band formed by laminating leather, a nonwoven fabric containing seaweed charcoal fiber, and an aluminum foil or plate as a band for warming a specific part of a body. Patent Document 2 describes a far-infrared radiation sheet in which a skin layer, a heat insulating layer, a far-infrared radiation layer, and a coating layer are sequentially laminated in this order. The far-infrared radiation layer is made of a nonwoven fabric impregnated with carbon particles, zirconium carbide, zirconium oxide, or the like.

JP-A-8-302510 JP-A-11-129370

  However, when the material is processed into a complicated shape in the belt-shaped material described in Patent Literature 1, strong adhesion between the aluminum foil and a layer laminated with the aluminum foil is required. Further, when a layer having a certain thickness such as an aluminum plate is used as a heat conductive material, it may be difficult to process the layer into a complicated shape.

  Further, the far-infrared radiation sheet described in Patent Literature 2 has a heat-insulating layer made of a synthetic resin foam or nonwoven fabric and a far-infrared radiation layer, and thus may have a complicated configuration. Therefore, it may be difficult to process the far-infrared radiation sheet of Patent Document 2 into a complicated shape.

  The present invention has a good thermal conductivity, a leather laminate that can be processed into various shapes, a method for producing a leather laminate, a sheet material, a resin-impregnated aluminum nonwoven fabric, a method for producing a resin-impregnated aluminum nonwoven fabric, It is an object of the present invention to provide a laminate, a method for producing the laminate, and a case for an electronic device.

  A leather laminate according to one embodiment of the present invention includes leather and an aluminum nonwoven fabric bonded to the leather.

  According to this, since the aluminum nonwoven fabric is laminated on the leather, the leather laminate has excellent heat conductivity and strength. Moreover, since the aluminum nonwoven fabric is a flexible sheet-like material, the leather laminate can be processed into various shapes.

  In the leather laminate according to a desirable aspect of the present invention, the aluminum nonwoven fabric has a plurality of aluminum fibers, and the plurality of the aluminum fibers are bonded so as to be randomly oriented with gaps and formed into a sheet shape. The gap between the plurality of aluminum fibers is impregnated with a resin, and the leather and the aluminum nonwoven fabric are bonded to each other. According to this, since the resin is impregnated between the aluminum fibers, the contact area between the aluminum fibers and the resin increases. Further, the resin also comes into contact with the base cloth surface or the collagen layer contained in the leather. Thereby, the leather laminate has good adhesive strength.

  In the leather laminate according to a preferred embodiment of the present invention, the resin is a thermoplastic resin. According to this, when the leather and the aluminum nonwoven fabric are bonded to each other by thermocompression bonding or the like, the thermoplastic resin flows to impregnate the gap between the aluminum fibers with the thermoplastic resin. Thereby, the leather laminate has good adhesive strength.

In the leather laminate according to a preferred embodiment of the present invention, the content of the aluminum nonwoven fabric is 200 g / m ² or more and 550 g / m ² or less. According to this, the leather laminate has good heat conductivity and good workability.

  In the leather laminate according to a preferred embodiment of the present invention, the leather is any one of artificial leather, synthetic leather, and natural leather. According to this, it is possible to bond an aluminum nonwoven fabric to any of artificial leather, synthetic leather, and natural leather. Therefore, a leather laminate having any of artificial leather, synthetic leather, or natural leather has good thermal conductivity and can be processed into various shapes.

  In the leather laminate according to a desirable aspect of the present invention, the leather is artificial leather or synthetic leather, the leather is a base cloth, a surface resin layer bonded to one surface of the base cloth, And wherein the aluminum nonwoven fabric is bonded to the other surface of the base fabric opposite to the one surface. According to this, when the resin comes into contact with the surface of the base cloth that is to be bonded to the aluminum nonwoven fabric, the leather laminate can have good adhesive strength.

  A sheet material according to one embodiment of the present invention is a sheet material having the above-described leather laminate, wherein a surface of the leather of the leather laminate is provided so as to face a direction in which a person comes into contact with or approaches. Features.

  According to this, the sheet material has good thermal conductivity. For this reason, the sheet material having high thermal conductivity has an advantage that heat from the human body can be moved to the side of the sheet material and, for example, energy consumed for air conditioning for cooling can be reduced. In addition, the aluminum nonwoven fabric has lower electric resistance than leather, and the chargeability is reduced as a leather laminate. Therefore, the sheet material can make it difficult to generate static electricity.

  The method for producing a leather laminate according to one embodiment of the present invention is a method for producing a leather laminate having leather and an aluminum nonwoven fabric, wherein the leather has a first resin, the aluminum nonwoven fabric, and a second resin in this order. The method includes a laminating step of laminating, and a thermocompression bonding step of thermocompression bonding the leather, the first resin, the aluminum nonwoven fabric, and the second resin.

  According to this, the gap between the aluminum fibers is satisfactorily impregnated with the resin by laminating the first resin and the second resin with the aluminum nonwoven fabric sandwiched therebetween and performing thermocompression bonding. Further, the resin also comes into contact with the base cloth surface or the collagen layer contained in the leather. Thereby, the leather laminate has good adhesive strength.

  In the method for producing a leather laminate according to a preferred embodiment of the present invention, the first resin and the second resin are thermoplastic resins. According to this, the thermoplastic resin can be melted in the thermocompression bonding step and filled in the gaps between the aluminum fibers.

  In the method for producing a leather laminate according to a preferred embodiment of the present invention, the pressing force in the thermocompression bonding step is 0.2 MPa or more and 3.5 MPa or less. According to this, the resin impregnates the aluminum nonwoven fabric and also comes into contact with the base fabric surface or the collagen layer contained in the leather. For this reason, the leather laminate has good adhesive strength and thermal conductivity.

  In the method for producing a leather laminate according to a preferred embodiment of the present invention, the leather is one of artificial leather, synthetic leather, and natural leather. Even if it is artificial leather, synthetic leather, or natural leather, a leather laminate can be manufactured by applying the above-described laminating step and thermocompression bonding step.

  In the method for manufacturing a leather laminate according to a preferred embodiment of the present invention, the thermocompression bonding is a hot press in which pressure is applied in a direction perpendicular to a surface of the leather to perform pressure bonding. According to this, the manufacturing method of the leather laminate can be manufactured with simple equipment for applying pressure in the uniaxial direction.

  In the method for manufacturing a leather laminate according to a preferred embodiment of the present invention, the temperature of the thermocompression bonding is 120 ° C. or higher. According to this, the first resin and the second resin are melted at a temperature of 120 ° C. or higher, and can be filled in the gaps between the aluminum fibers in the thermocompression bonding step.

  A resin-impregnated aluminum nonwoven fabric according to one embodiment of the present invention includes an aluminum nonwoven fabric and a resin impregnated in the aluminum nonwoven fabric. According to this, the resin-impregnated aluminum nonwoven fabric can be satisfactorily bonded to leather or the like by the resin impregnated in the aluminum nonwoven fabric. Further, since the resin-impregnated aluminum nonwoven fabric has excellent thermal conductivity and strength, leather bonded to the resin-impregnated aluminum nonwoven fabric also has good thermal conductivity and strength.

  The method for producing a resin-impregnated aluminum nonwoven fabric according to one embodiment of the present invention includes a laminating step of laminating a resin on at least one surface of the aluminum nonwoven fabric, thermocompression bonding of the aluminum nonwoven fabric and the resin, and bonding of the resin to the aluminum nonwoven fabric. And a thermocompression-bonding step of impregnating the resin. According to this, the resin can be favorably impregnated into the gaps between the aluminum fibers of the aluminum nonwoven fabric.

  A method for manufacturing a leather laminate according to one embodiment of the present invention includes a laminating step of laminating leather on a resin-impregnated aluminum nonwoven fabric in which an aluminum nonwoven fabric is impregnated with a resin, and thermocompression bonding the resin-impregnated aluminum nonwoven fabric and the leather. And a thermocompression bonding step. According to this, the resin of the resin-impregnated aluminum nonwoven fabric comes into contact with the base cloth surface or the collagen layer contained in the leather. Thereby, the leather laminate has good adhesive strength.

  The method for producing a leather laminate according to one embodiment of the present invention includes a resin-impregnated aluminum nonwoven fabric in which an aluminum nonwoven fabric is impregnated with a first resin, a second resin and leather, and a lamination step in which the resin is impregnated. A thermocompression bonding step of thermocompression bonding the second resin and the leather. According to this, while the 2nd resin contacts the 1st resin which the resin impregnated aluminum nonwoven fabric has, it contacts the base cloth surface or the collagen layer contained in the leather. As a result, the resin-impregnated aluminum nonwoven fabric and the leather are bonded by the second resin, and the leather laminate has good adhesive strength.

  A laminate according to one embodiment of the present invention includes an aluminum nonwoven fabric impregnated with a resin and a resin layer provided on at least one surface of the aluminum nonwoven fabric. According to this, the laminate can be satisfactorily bonded to leather or the like by the resin and the resin layer impregnated in the aluminum nonwoven fabric. In addition, since the aluminum nonwoven fabric has excellent thermal conductivity and strength, leather and the like bonded to the laminate also have good thermal conductivity and strength.

  The method for manufacturing a laminate according to one aspect of the present invention includes a laminating step of laminating a resin on at least one surface of the aluminum nonwoven fabric, and thermocompression bonding of the aluminum nonwoven fabric and the resin, so that the resin is formed on the aluminum nonwoven fabric. A thermocompression bonding step of impregnating and forming a resin layer on at least one surface of the aluminum nonwoven fabric. According to this, the resin layer can be formed in the same step as the step of favorably impregnating the resin into the gaps between the aluminum fibers of the aluminum nonwoven fabric.

  The method for manufacturing a leather laminate according to one embodiment of the present invention includes a laminating step of laminating leather on a laminate in which a resin layer is provided on at least one surface of an aluminum nonwoven fabric, and heating the laminate and the leather. And a thermocompression bonding step of performing compression bonding. According to this, the resin of the laminate comes into contact with the base cloth surface or the collagen layer contained in the leather. Thereby, the leather laminate has good adhesive strength.

  The method for producing a leather laminate according to one embodiment of the present invention includes a lamination step in which a laminate in which a first resin layer is provided on at least one surface of an aluminum nonwoven fabric, a second resin, and leather are laminated in this order; And a thermocompression bonding step of thermocompression bonding the second resin and the leather. According to this, while the 2nd resin contacts the 1st resin layer which a laminated body has, it contacts the base cloth surface or the collagen layer contained in the leather. Thereby, the laminate and the leather are adhered by the second resin, and the leather laminate has good adhesive strength.

  An electronic device case according to one embodiment of the present invention includes any one of the above-described leather laminates.

  According to this, the electronic device case has good thermal conductivity. Therefore, the electronic device case can satisfactorily radiate heat generated in the electronic device to the outside.

  In the electronic device case according to a preferred embodiment of the present invention, the electronic device has a back surface facing the electronic device when the electronic device is stored, and a surface opposite to the back surface, and the aluminum nonwoven fabric is provided on the back surface. And the leather is provided on the surface.

  According to this, the aluminum nonwoven fabric is provided at a position closer to the electronic device than leather when the electronic device is stored. For this reason, heat generated in the electronic device is favorably transmitted to the aluminum nonwoven fabric.

  An electronic device case according to a preferred embodiment of the present invention includes a cover formed of the leather laminate, and a housing provided on the back surface of the cover for fixing an electronic device, I do.

  According to this, by fixing the electronic device to the storage body, the electronic device can be stored in the cover made of the leather laminate.

  In the electronic device case according to a preferred embodiment of the present invention, a metal plate is provided on at least a part of the housing.

  According to this, the heat generated in the electronic device is favorably transmitted to the aluminum nonwoven fabric via the metal plate.

  An electronic device case according to a preferred embodiment of the present invention is provided so as to face the cover made of the leather laminate and the back surface of the cover, and stores the electronic device between the cover back surface. And a storage body that forms a storage space for storing.

  According to this, the leather laminate can be applied to an electronic device case in which the electronic device is stored in the storage space.

  In the electronic device case according to a preferred aspect of the present invention, the storage space is a pocket-type space, and an opening is provided on one side of the storage body.

  According to this, the configuration of the electronic device case can be simplified, and the manufacturing cost can be reduced.

  According to the leather laminate of the present invention, the method for producing the leather laminate, the sheet material, the resin-impregnated aluminum nonwoven fabric, the method for producing the resin-impregnated aluminum nonwoven fabric, the laminate, the method for producing the laminate, and the electronic device case, It has conductivity and can be processed into various shapes.

FIG. 1 is a perspective view of the leather laminate according to the first embodiment. FIG. 2 is a sectional view taken along the line II-II 'in FIG. FIG. 3 is a plan view schematically showing the aluminum nonwoven fabric according to the first embodiment. FIG. 4 is a cross-sectional view of a leather laminate according to a first modification. FIG. 5 is a cross-sectional view of a leather laminate according to a second modification. FIG. 6 is an explanatory diagram for explaining a method of manufacturing a leather laminate. FIG. 7 is a side view of an automobile seat using the leather laminate. FIG. 8 is a cross-sectional view of the resin-impregnated aluminum nonwoven fabric according to the second embodiment. FIG. 9 is a cross-sectional view of a resin-impregnated aluminum nonwoven fabric according to a third modification of the second embodiment. FIG. 10 is an explanatory diagram for explaining a method for producing a resin-impregnated aluminum nonwoven fabric. FIG. 11 is an explanatory diagram for describing a method of manufacturing a leather laminate using a resin-impregnated aluminum nonwoven fabric. FIG. 12 is an explanatory diagram for describing a modified example of the method of manufacturing a leather laminate using a resin-impregnated aluminum nonwoven fabric. FIG. 13 is a cross-sectional view of the laminate according to the third embodiment. FIG. 14 is a sectional view of a laminate according to a fourth modification of the third embodiment. FIG. 15 is a cross-sectional view of a stacked body according to a fifth modified example of the third embodiment. FIG. 16 is an explanatory diagram for describing a method for manufacturing a laminate. FIG. 17 is an explanatory diagram for describing a method of manufacturing a leather laminate using the laminate. FIG. 18 is an explanatory diagram for describing a modified example of the method of manufacturing a leather laminate using the laminate. FIG. 19 is a cross-sectional photograph of the leather laminate according to the example. FIG. 20 is a photograph of a cross section of a leather laminate according to another example. FIG. 21 is a plan view of an electronic device case using a leather laminate. FIG. 22 is a side view of the electronic device case when the electronic device is stored. FIG. 23 is a sectional view taken along the line XXIII-XXIII 'of FIG. FIG. 24 is a plan view showing a modification of the electronic device case using the leather laminate. FIG. 25 is a sectional view taken along line XXV-XXV 'of FIG.

  Hereinafter, the present invention will be described in detail with reference to the drawings. The present invention is not limited by the following embodiments for carrying out the invention (hereinafter, referred to as embodiments). The components in the following embodiments include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those that are in the so-called equivalent range. Furthermore, components disclosed in the following embodiments can be appropriately combined.

(1st Embodiment)
FIG. 1 is a perspective view of the leather laminate according to the first embodiment. FIG. 2 is a sectional view taken along the line II-II ′ in FIG. FIG. 3 is a plan view schematically showing the aluminum nonwoven fabric according to the first embodiment.

  As shown in FIGS. 1 and 2, the leather laminate 1 includes a leather 10 and an aluminum nonwoven fabric 20 bonded to the leather 10. The leather 10 and the aluminum nonwoven fabric 20 are both sheet-like materials. The aluminum nonwoven fabric 20 is laminated and attached in the thickness direction of the leather 10. The surface of the surface resin layer 12 becomes the front surface 1a of the leather laminate 1, and the aluminum nonwoven fabric 20 is disposed on the back surface 1b. The thickness of the leather laminate 1 is, for example, about 1.5 mm or more and 3 mm or less. However, the thickness of the leather laminate 1 can be appropriately changed according to the use of the leather laminate 1 and the thickness of the aluminum nonwoven fabric 20.

  The leather 10 shown in FIGS. 1 and 2 is artificial leather or synthetic leather that is not natural leather. As shown in FIG. 2, the leather 10 has a base cloth 11 and a surface resin layer 12. When the leather 10 is artificial leather, a nonwoven fabric is used as the base cloth 11. The nonwoven fabric used for artificial leather is formed by three-dimensionally intertwining microfibers such as ultrafine linear nylon fibers and polyester fibers, and impregnating a resin such as polyurethane into gaps between the microfibers.

  When the leather 10 is a synthetic leather, a knitted or woven fabric is used as the base cloth 11. In a knitted fabric used for synthetic leather, a fiber bundle such as nylon fiber or polyester fiber is formed in a loop shape, and the fiber bundles are entangled with each other to form a sheet. The woven fabric used for the synthetic leather is formed in a sheet shape such that the fiber bundles are arranged so as to be orthogonal to each other, and adjacent fibers are in close contact with each other. The base cloth 11 is formed by applying or bonding a resin such as polyurethane to the upper part of the knitted or woven fabric based on the knitted or woven fabric.

  As shown in FIG. 2, the base cloth 11 has a first surface 11a (one surface) and a second surface 11b (the other surface) opposite to the first surface 11a. The surface resin layer 12 is bonded to the first surface 11 a of the base cloth 11. The surface of the surface resin layer 12 becomes the surface 1 a of the leather laminate 1. The surface resin layer 12 is made of, for example, a resin such as polyurethane, and the surface of the surface resin layer 12 is subjected to processing such as unevenness and wrinkles that resemble natural leather. The surface resin layer 12 is not limited to a single layer, and may have a plurality of resin layers. For example, the surface resin layer 12 may have a protective layer for protecting the surface or a colored layer for displaying a color or a pattern laminated thereon.

  As shown in FIG. 2, the aluminum nonwoven fabric 20 is bonded to the second surface 11b of the base cloth 11. In other words, the base cloth 11 is provided between the aluminum nonwoven fabric 20 and the surface resin layer 12 in the thickness direction of the leather laminate 1. The aluminum nonwoven fabric 20 is in contact with the second surface 11b of the base fabric 11, and no other member is provided between the aluminum nonwoven fabric 20 and the second surface 11b of the base fabric 11. The thickness of the aluminum nonwoven fabric 20 is, for example, 1 mm or more and 1.5 mm or less. However, the thickness of the aluminum nonwoven fabric 20 can be appropriately changed according to the workability and heat conductivity required for the leather laminate 1.

  As shown in FIG. 3, the aluminum nonwoven fabric 20 has a plurality of aluminum fibers 21. The plurality of aluminum fibers 21 are randomly oriented with gaps 22 and joined so as to form a sheet. The aluminum fibers 21 are joined at a portion where the aluminum fibers 21 cross and contact with each other in a plan view, for example, by fusion or adhesion. The material of the aluminum fibers 21 is aluminum (Al) or an alloy material containing aluminum as a main component. With such a configuration, the aluminum nonwoven fabric 20 has good thermal conductivity and strength, and can easily perform processing such as cutting and bending.

  Resin 31 is impregnated in gaps 22 of aluminum fibers 21. The resin 31 is a thermoplastic resin, such as a polyurethane resin. Note that the resin 31 may be a thermoplastic resin other than the polyurethane resin.

  The resin 31 is impregnated into the aluminum nonwoven fabric 20 by a thermocompression bonding process described below, and comes into contact with at least the base fabric 11 of the leather 10. Thereby, the aluminum nonwoven fabric 20 is bonded to the leather 10. Here, the resin impregnated layer 32 shown in FIG. 2 is a region where the resin 31 is impregnated. The resin 31 is impregnated from the second surface 11b side of the base cloth 11, and also impregnates a part of the nonwoven fabric or knitted or woven resin fibers included in the base cloth 11. Thus, the resin impregnated layer 32 is preferably formed over the aluminum nonwoven fabric 20 and the base cloth 11. Thereby, the leather laminate 1 can increase the adhesive strength between the aluminum nonwoven fabric 20 and the leather 10. Since the leather laminate 1 is unlikely to cause separation between the aluminum nonwoven fabric 20 and the leather 10, it can be processed and deformed into various shapes.

  The shape of the leather laminate 1 is not limited to a flat plate shape, but may have a curved surface or an uneven shape. The material, thickness, and the like of each member constituting the leather laminate 1 may be appropriately changed according to the use of the leather laminate 1. The resin 31 only needs to be in contact with the fibers included in the base cloth 11 at least on the second surface 11 b of the base cloth 11, and the resin-impregnated layer 32 may not be formed on a part of the base cloth 11. . Further, the resin-impregnated layer 32 may not be formed on a part of the aluminum nonwoven fabric 20.

(First Modification)
FIG. 4 is a cross-sectional view of a leather laminate according to a first modification. In the following description, the same reference numerals are given to the components described in the above-described first embodiment, and description thereof will be omitted. The leather 10 shown in FIGS. 1 and 2 is an artificial leather or a synthetic leather, but is not limited thereto.

  In the leather laminate 1A of the first modification shown in FIG. 4, the leather 10A is a natural leather. The leather 10A has a collagen layer 13 and a grain surface layer 14. The collagen layer 13 is configured by three-dimensionally intertwining collagen fibers that are proteins. The silver surface layer 14 is provided on the first surface 13a of the collagen layer 13 and serves as the surface 1a of the leather laminate 1A. The grain surface layer 14 has a dense fiber structure close to the skin portion of leather such as cowhide, and is formed by removing the skin portion (skin) and hair by processing.

  The aluminum nonwoven fabric 20 is bonded to the second surface 13b of the collagen layer 13. In other words, the collagen layer 13 is provided between the aluminum nonwoven fabric 20 and the grain surface layer 14 in the thickness direction of the leather laminate 1A.

  As in the example shown in FIG. 2, the resin 31 is impregnated into the aluminum nonwoven fabric 20 by a thermocompression bonding step and comes into contact with at least the collagen layer 13 of the leather 10A. Further, the resin 31 is impregnated into a part of the collagen layer 13 on the second surface 13b side, and impregnates a part of the collagen fibers of the collagen layer 13. Thus, the resin impregnated layer 32 is preferably formed over the aluminum nonwoven fabric 20 and the collagen layer 13. Thereby, the leather laminate 1A can increase the adhesive strength between the aluminum nonwoven fabric 20 and the leather 10A.

(Second Modification)
FIG. 5 is a cross-sectional view of a leather laminate according to a second modification. In the first embodiment and the first modification described above, the case where the aluminum nonwoven fabric 20 is in contact with the second surface 11b of the base cloth 11 or the second surface 13b of the collagen layer 13 is described, but the present invention is not limited to this. As shown in FIG. 5, an intermediate resin layer 33 is provided between the aluminum nonwoven fabric 20 and the base cloth 11 in the leather laminate 1B of the present modification.

  The intermediate resin layer 33 is a resin layer formed by a part of the resin 31 impregnated in the aluminum nonwoven fabric 20. That is, the intermediate resin layer 33 is a layer made of the same resin material as the resin 31 and is a layer in which the aluminum fibers 21 and the fibers of the base cloth 11 do not exist. In this modification, the resin 31 is impregnated on the second surface 11b side of the base cloth 11 to form a first resin impregnated layer 32a. The resin 31 is impregnated into the aluminum nonwoven fabric 20 to form the second resin-impregnated layer 32b. Thereby, the resin 31 is provided over the aluminum nonwoven fabric 20, the intermediate resin layer 33, and a part of the base cloth 11 on the second surface 11 b side. Therefore, the leather laminate 1B can increase the adhesive strength between the aluminum nonwoven fabric 20 and the leather 10.

  The intermediate resin layer 33 may be made of a material different from that of the resin 31, and may be, for example, an adhesive for bonding the leather 10 and the aluminum nonwoven fabric 20. Also, in the leather laminate 1A shown in FIG. 4, an intermediate resin layer 33 may be provided between the collagen layer 13 of the leather 10A, which is natural leather, and the aluminum nonwoven fabric 20.

  As described above, the leather laminate 1 of the present embodiment has the leather 10 and the aluminum nonwoven fabric 20 bonded to the leather 10.

  According to this, since the aluminum nonwoven fabric 20 is laminated on the leather 10, the leather laminate 1 is excellent in thermal conductivity and strength. In addition, since the aluminum nonwoven fabric 20 is a flexible sheet-like material, the leather laminate 1 can be processed into various shapes.

  In the leather laminate 1, the aluminum nonwoven fabric 20 has a plurality of aluminum fibers 21. The plurality of aluminum fibers 21 are randomly oriented with gaps 22 and joined so as to form a sheet. The resin 22 is impregnated in the gaps 22 between the plurality of aluminum fibers 21 and the leather 10 and the aluminum nonwoven fabric 20 are bonded together. According to this, since the resin 31 is impregnated in the gap 22 between the aluminum fibers 21, the contact area between the aluminum fibers 21 and the resin 31 increases. The resin 31 also contacts the second surface 11b of the base cloth 11 included in the leather 10. Thereby, in the leather laminate 1, good adhesion strength between the leather 10 and the aluminum nonwoven fabric 20 is obtained. The resin 31 also impregnates a part of the base cloth 11 on the second surface 11b side. Thereby, the leather laminate 1 can increase the adhesive strength.

  In the leather laminate 1, the resin 31 is a thermoplastic resin. According to this, when the leather 10 and the aluminum nonwoven fabric 20 are bonded by thermocompression bonding or the like, the thermoplastic resin flows to impregnate the gap 22 between the aluminum fibers 21 with the thermoplastic resin. Thereby, the leather laminate 1 can obtain good adhesive strength.

Further, in the leather laminate 1, the content of the aluminum nonwoven fabric 20 is 200 g / m ² or more and 550 g / m ² or less. According to this, the leather laminate 1 has good heat conductivity and good workability.

  In the leather laminates 1 and 1A, the leathers 10 and 10A are any of artificial leather, synthetic leather, and natural leather. According to this, the aluminum nonwoven fabric 20 can be attached to any of artificial leather, synthetic leather, and natural leather. For this reason, the leather laminates 1 and 1A having any of artificial leather, synthetic leather or natural leather have good thermal conductivity and can be processed into various shapes.

  In the leather laminate 1, the leather 10 is artificial leather or synthetic leather. And 12. The aluminum nonwoven fabric 20 is bonded to a second surface 11b (the other surface) of the base cloth 11 opposite to the first surface 11a. According to this, when the resin 31 comes into contact with the surface (second surface 11b) of the base cloth 11 that is bonded to the aluminum nonwoven fabric 20, the resin fibers included in the base cloth 11 come into contact with the resin 31. Therefore, the leather laminate 1 has good adhesive strength.

(Production method of leather laminate)
FIG. 6 is an explanatory diagram for explaining a method of manufacturing a leather laminate. A case where the hot press device 100 is used as a method for manufacturing the leather laminate 1 will be described. The hot press 100 has a lower mold 101 and an upper mold 102. The upper mold 102 is arranged to face the lower mold 101. The opposing surface 101a of the lower die 101 and the opposing surface 102a of the upper die 102 are flat.

  First, the leather 10, the first resin 34, the aluminum nonwoven fabric 20, and the second resin 35 are laminated in this order on the facing surface 101a of the lower mold 101 (lamination step ST1). The surface resin layer 12 of the leather 10 is directed to the facing surface 101a. Further, the first resin 34 is disposed on the base cloth 11. The aluminum nonwoven fabric 20 is disposed between the first resin 34 and the second resin 35 in the thickness direction. The first resin 34 and the second resin 35 are thermoplastic resins, for example, polyurethane.

  The hot press 100 raises the temperature of the lower mold 101 and the upper mold 102 to, for example, 120 ° C. or higher. The hot press device 100 can control the temperature of the lower mold 101 and the upper mold 102 by, for example, an electric heater (not shown). In addition, the thermocompression bonding temperature is appropriately set according to the melting points of the materials of the first resin 34 and the second resin 35.

  The hot press apparatus 100 thermocompression-bonds the leather 10, the first resin 34, the aluminum nonwoven fabric 20, and the second resin 35 (thermocompression step ST2). Specifically, the hot press apparatus 100 moves the lower mold 101 toward the upper mold 102 in a direction D1 indicated by an arrow. Thereby, pressure and heat are applied to the leather 10, the first resin 34, the aluminum nonwoven fabric 20, and the second resin 35. At this time, a uniaxial force is applied to each member in a direction perpendicular to the surface of the leather 10.

  Then, the first resin 34 and the second resin 35 are melted by the heat from the hot press device 100 and flow into the gaps 22 between the aluminum fibers 21 (see FIG. 3). At the same time, the first resin 34 also flows to the second surface 11b side of the base cloth 11. As a result, the first resin 34 and the second resin 35 are impregnated into the aluminum nonwoven fabric 20 and a part of the base fabric 11 to form the resin-impregnated layer 32.

  Thereafter, the leather 10 and the aluminum nonwoven fabric 20 are held between the upper mold 102 and the lower mold 101 for a predetermined time and cooled. Thereafter, the upper mold 102 and the lower mold 101 are opened. Through the above steps, the leather laminate 1 is obtained.

  As described above, according to the method of manufacturing the leather laminate 1 of the present embodiment, the hot press apparatus 100 laminates the first non-woven fabric 20 with the first resin 34 and the second resin 35 and performs thermocompression bonding. . Thereby, the first resin 34 and the second resin 35 are impregnated in the gaps 22 between the aluminum fibers 21 (see FIG. 3). The first resin 34 also contacts the second surface 11b of the base cloth 11 included in the leather 10. Thereby, in the leather laminate 1, good adhesion strength between the leather 10 and the aluminum nonwoven fabric 20 is obtained.

  Further, according to the method of manufacturing the leather laminate 1, the first resin 34 and the second resin 35 are thermoplastic resins, for example, polyurethane. For this reason, the first resin 34 and the second resin 35 can be melted in the thermocompression bonding step ST2 and filled in the gap 22 between the aluminum fibers 21 by the flow of the first resin 34 and the second resin 35.

  Further, the leather 10 shown in FIG. 6 is artificial leather or synthetic leather, but is also applicable to the leather laminate 1A having the natural leather 10A shown in FIG. That is, the lamination step ST1 and the thermocompression bonding step ST2 can be applied to any of artificial leather, synthetic leather, and natural leather, and the leather laminates 1 and 1A can be manufactured.

  Further, according to the method of manufacturing the leather laminate 1, the thermocompression bonding step ST2 is a hot press in which pressure is applied in a direction perpendicular to the surface of the leather 10 to perform pressure bonding. According to this, it is possible to manufacture with a simple hot press apparatus 100 that performs pressing from one axis direction.

  The method for manufacturing the leather laminate 1 is not limited to hot pressing. For example, each material of the leather 10, the first resin 34, the aluminum nonwoven fabric 20, and the second resin 35 may be formed in a long sheet shape, and may be thermocompression-bonded by a compression roller.

  In addition, the upper mold 102 and the lower mold 101 shown in FIG. 6 are schematically shown for ease of explanation, and the hot press apparatus 100 is adapted to the shape, thickness, and material of the leather laminate 1 depending on the material. Can be changed. In the laminating step ST1, the second resin 35, the aluminum nonwoven fabric 20, the first resin 34, and the leather 10 may be laminated in this order from the lower mold 101 to the upper mold 102.

(Car seat materials)
FIG. 7 is a side view of an automobile seat using the leather laminate. As shown in FIG. 7, the automobile seat 200 has a seat surface 201, a backrest 202, and a headrest 203. The leather laminate 1 is used as a seat material of the seat surface 201, the backrest 202, and the headrest 203, and is provided in a portion of each member where a person comes into contact with or comes close to. For example, the leather laminate 1 is provided on a portion of the seat surface 201 where a person sits. For example, the leather laminate 1 is provided on a surface of the backrest 202 with which the back of the person comes into contact or approaches. For example, the leather laminate 1 is provided in a portion of the headrest 203 where a human head contacts or approaches. The surface 1a of the leather laminate 1, that is, the surface of the leather 10, is provided facing the direction in which the person comes into contact with or approaches.

  According to this, the sheet material using the leather laminate 1 has good thermal conductivity. For this reason, a sheet material having high thermal conductivity has an advantage that heat from a human body can be moved to the side of the sheet material or the like, and energy consumed for air conditioning for cooling can be reduced. Moreover, the electrical resistance of the aluminum nonwoven fabric 20 is lower than that of the leather 10, and the chargeability of the leather laminate 1 is reduced. Therefore, the automobile seat 200 can make it difficult to generate static electricity.

  Although FIG. 7 shows a case where the leather laminate 1 is used as a sheet material of an automobile seat 200, the present invention is not limited to this. The leather laminate 1 has excellent adhesive strength between the leather 10 and the aluminum nonwoven fabric 20, can be processed and deformed into various shapes, and can be used for a wide range of products and applications. For example, the leather laminate 1 can be applied to bedding, interior materials, sofas, chairs, school bags, strollers, smartphone cases, inner leather of shoes, and the like.

(2nd Embodiment)
FIG. 8 is a cross-sectional view of the resin-impregnated aluminum nonwoven fabric according to the second embodiment. As shown in FIG. 8, the resin-impregnated aluminum nonwoven fabric 50 has an aluminum nonwoven fabric 20 and a resin 31 impregnated in the aluminum nonwoven fabric 20. The resin 31 is impregnated in the gaps 22 (see FIG. 3) of the aluminum fibers 21 and provided from the first surface 50a to the second surface 50b of the resin-impregnated aluminum nonwoven fabric 50. That is, the resin-impregnated layer 32 is formed on the entire resin-impregnated aluminum nonwoven fabric 50 in the thickness direction. The resin 31 and the aluminum fibers 21 are exposed on at least a part of the first surface 50a and at least a part of the second surface 50b.

  The resin-impregnated aluminum nonwoven fabric 50 can be satisfactorily bonded to the leather 10 or the like by the resin 31 impregnated in the aluminum nonwoven fabric 20. Further, the resin-impregnated aluminum nonwoven fabric 50 has the aluminum nonwoven fabric 20 and is excellent in thermal conductivity and strength. Therefore, the leather 10 and the like bonded to the resin-impregnated aluminum nonwoven fabric 50 also have good thermal conductivity and strength.

  FIG. 9 is a cross-sectional view of a resin-impregnated aluminum nonwoven fabric according to a third modification of the second embodiment. In the resin-impregnated aluminum nonwoven fabric 51 of the present modification, a portion of the aluminum nonwoven fabric 20 on the first surface 51a side is not impregnated with the resin 31 in the thickness direction. That is, in the resin-impregnated aluminum nonwoven fabric 51, the aluminum fiber layer 52 is provided on the first surface 51a side, and the resin-impregnated layer 32 is provided on the second surface 51b side. The aluminum fiber layer 52 is not impregnated with the resin 31 and is formed of the aluminum fibers 21 of the aluminum nonwoven fabric 20. The thickness of the aluminum fiber layer 52 is smaller than the thickness of the resin-impregnated layer 32.

  FIG. 10 is an explanatory diagram for explaining a method for producing a resin-impregnated aluminum nonwoven fabric. As shown in FIG. 10, first, the aluminum nonwoven fabric 20 and the first resin 36 are laminated on the opposing surface 101a of the lower mold 101 in this order (lamination step ST11). The first resin 36 is a thermoplastic resin, for example, polyurethane. The first resin 36 may be laminated on at least one surface of the aluminum nonwoven fabric 20. The first resin 36 may be provided on both surfaces of the aluminum nonwoven fabric 20.

  The hot press apparatus 100 thermocompression-bonds the first resin 36 and the aluminum nonwoven fabric 20 (thermocompression step ST12). Thereby, pressure and heat are applied to the first resin 36 and the aluminum nonwoven fabric 20. Then, the first resin 36 is melted by the heat from the hot press device 100 and flows into the gap 22 between the aluminum fibers 21 (see FIG. 3). As a result, the first resin 36 is impregnated into the aluminum nonwoven fabric 20, and a resin-impregnated aluminum nonwoven fabric 50 is formed. Note that the surface of the aluminum nonwoven fabric 20 on the facing surface 101a side may not be impregnated with the first resin 36 due to the amount and fluidity of the first resin 36. In this case, a resin-impregnated aluminum nonwoven fabric 51 shown in FIG. 9 is formed.

  FIG. 11 is an explanatory diagram for describing a method of manufacturing a leather laminate using a resin-impregnated aluminum nonwoven fabric. As shown in FIG. 11, the resin-impregnated aluminum nonwoven fabric 50 and the leather 10 are laminated on the opposite surface 101a of the lower mold 101 in this order (lamination step ST21). The surface resin layer 12 of the leather 10 faces the facing surface 102a. The base cloth 11 is disposed on the first surface 50 a of the resin-impregnated aluminum nonwoven fabric 50. No resin is provided between the first surface 50 a of the resin-impregnated aluminum nonwoven fabric 50 and the leather 10.

  The hot press apparatus 100 thermocompression-bonds the leather 10 and the resin-impregnated aluminum nonwoven fabric 50 (thermocompression step ST22). Thereby, pressure and heat are applied to the leather 10 and the resin-impregnated aluminum nonwoven fabric 50. Then, the resin 31 (see FIG. 8) of the resin-impregnated aluminum nonwoven fabric 50 is melted by the heat from the hot press device 100, and the resin 31 also flows to the base cloth 11 side. Thereby, the resin 31 impregnated in the aluminum nonwoven fabric 20 is also impregnated into a part of the base fabric 11, and the resin impregnated layer 32 is formed on the resin-impregnated aluminum nonwoven fabric 50 and the base fabric 11. Through the above steps, a leather laminate 1C in which the resin-impregnated aluminum nonwoven fabric 50 and the leather 10 are laminated is obtained. In the leather laminate 1C, the resin 31 of the resin-impregnated aluminum nonwoven fabric 50 also impregnates the base fabric 11 side, whereby good adhesive strength is obtained. Further, in the present embodiment, by using the resin-impregnated aluminum nonwoven fabric 50, there is no need to use a resin layer when pressure-bonding the leather 10 and the manufacturing process of the leather laminate 1C can be simplified.

  FIG. 12 is an explanatory diagram for describing a modified example of the method of manufacturing a leather laminate using a resin-impregnated aluminum nonwoven fabric. As shown in FIG. 12, the resin-impregnated aluminum nonwoven fabric 50, the second resin 37, and the leather 10 are laminated in this order on the facing surface 101a of the lower mold 101 (lamination step ST31). The surface resin layer 12 of the leather 10 faces the facing surface 102a. The second resin 37 is disposed between the base cloth 11 and the first surface 50a of the resin-impregnated aluminum nonwoven fabric 50.

  The hot press apparatus 100 thermocompression-bonds the leather 10, the second resin 37, and the resin-impregnated aluminum nonwoven fabric 50 (thermocompression step ST32). Thereby, pressure and heat are applied to the leather 10, the second resin 37, and the resin-impregnated aluminum nonwoven fabric 50. Then, the resin 31 (see FIG. 8) of the second resin 37 and the resin-impregnated aluminum nonwoven fabric 50 is melted by the heat from the hot press device 100. The second resin 37 contacts the resin 31 of the resin-impregnated aluminum nonwoven fabric 50 and also flows to the base cloth 11 side. As a result, the second resin 37 is also impregnated into a part of the base cloth 11 to form the resin-impregnated layer 32. Through the above steps, a leather laminate 1C in which the resin-impregnated aluminum nonwoven fabric 50 and the leather 10 are laminated is obtained. In this modification, the use of the second resin 37 can improve the adhesive strength between the resin-impregnated aluminum nonwoven fabric 50 and the leather 10.

(Third embodiment)
FIG. 13 is a cross-sectional view of the laminate according to the third embodiment. As shown in FIG. 13, the laminate 60 includes the aluminum nonwoven fabric 20 and a first resin layer 65 provided on the first surface 20 a of the aluminum nonwoven fabric 20. The resin 31 is impregnated in the aluminum nonwoven fabric 20, and the first resin layer 65 is in contact with the resin 31 of the aluminum nonwoven fabric 20. The resin impregnated layer 32 is formed from the first surface 20a to the second surface 20b of the aluminum nonwoven fabric 20.

  The first resin layer 65 is a layer made of the same resin material as the resin 31 impregnated in the aluminum nonwoven fabric 20 and not including the aluminum fibers 21. The laminate 60 can be favorably bonded to the leather 10 or the like by the first resin layer 65. The laminate 60 has the aluminum nonwoven fabric 20 and is excellent in thermal conductivity and strength. Therefore, the leather 10 and the like bonded to the laminate 60 also have good thermal conductivity and strength.

  FIG. 14 is a sectional view of a laminate according to a fourth modification of the third embodiment. As shown in FIG. 14, the laminate 61 of this modification is provided on the aluminum nonwoven fabric 20, the first resin layer 65 provided on the first surface 20 a of the aluminum nonwoven fabric 20, and on the second surface 20 b of the aluminum nonwoven fabric 20. And a second resin layer 66 provided. In other words, the aluminum nonwoven fabric 20 is disposed between the first resin layer 65 and the second resin layer 66 in the thickness direction. The second resin layer 66 is made of the same resin material as the resin 31 impregnated in the aluminum nonwoven fabric 20 and does not include the aluminum fibers 21. As described above, the laminate 61 may have the resin layer provided on the first surface 20a and the second surface 20b of the aluminum nonwoven fabric 20.

  FIG. 15 is a cross-sectional view of a stacked body according to a fifth modified example of the third embodiment. As shown in FIG. 15, the laminate 61 of the present modification includes the aluminum nonwoven fabric 20 and the first resin layer 65 provided on the first surface 20a of the aluminum nonwoven fabric 20. The resin 31 is impregnated on the first surface 20a side of the aluminum nonwoven fabric 20, and is not impregnated on the second surface 20b side of the aluminum nonwoven fabric 20. That is, in the aluminum nonwoven fabric 20, the resin impregnated layer 32 is provided on the first surface 20a side, and the aluminum fiber layer 52 is provided on the second surface 20b side. Even with such a configuration, the laminate 62 can be satisfactorily bonded to the leather 10 or the like by the first resin layer 65.

  FIG. 16 is an explanatory diagram for describing a method for manufacturing a laminate. As shown in FIG. 16, first, the aluminum nonwoven fabric 20 and the first resin 36 are laminated on the facing surface 101a of the lower mold 101 in this order (lamination step ST41). The first resin 36 is a thermoplastic resin, for example, polyurethane. The first resin 36 may be laminated on at least one surface of the aluminum nonwoven fabric 20. When manufacturing the laminate 61 shown in FIG. 14, the first resin 36 may be provided on both surfaces of the aluminum nonwoven fabric 20.

  The hot press apparatus 100 thermocompression-bonds the first resin 36 and the aluminum nonwoven fabric 20 (thermocompression step ST42). Thereby, pressure and heat are applied to the first resin 36 and the aluminum nonwoven fabric 20. Then, the first resin 36 is melted by the heat from the hot press device 100 and flows into the gap 22 between the aluminum fibers 21 (see FIG. 3). Thereby, the first resin 36 is impregnated into the aluminum nonwoven fabric 20. In addition, due to the amount and fluidity of the first resin 36, a part of the first resin 36 is not impregnated in the aluminum nonwoven fabric 20, and the first resin layer 65 is formed on the first surface 20a of the aluminum nonwoven fabric 20. Thereby, the laminated body 60 can be manufactured.

  According to such a manufacturing method, the first resin layer 65 can be formed in the same step as the step of favorably impregnating the aluminum nonwoven fabric 20 with the first resin 36. Note that the surface of the aluminum nonwoven fabric 20 opposite to the first resin layer 65 may not be impregnated with the first resin 36. In this case, a laminate 62 shown in FIG. 15 can be formed.

  FIG. 17 is an explanatory diagram for describing a method of manufacturing a leather laminate using the laminate. As shown in FIG. 17, the laminated body 60 and the leather 10 are laminated in this order on the facing surface 101a of the lower mold 101 (lamination step ST51). The surface resin layer 12 of the leather 10 faces the facing surface 102a. The base cloth 11 is disposed on the first resin layer 65. No other resin is provided between the first resin layer 65 of the laminate 60 and the leather 10.

  The hot press apparatus 100 thermocompression-bonds the leather 10 and the laminate 60 (thermocompression step ST52). Thereby, pressure and heat are applied to the leather 10 and the laminate 60. Then, the first resin layer 65 of the laminate 60 is melted by the heat from the hot press device 100, and the first resin layer 65 also flows to the base fabric 11 side. Thereby, the first resin layer 65 is also impregnated into a part of the base cloth 11, and the resin impregnated layer 32 is formed on the aluminum nonwoven fabric 20 and the base cloth 11. Through the above steps, the leather laminate 1 in which the aluminum nonwoven fabric 20 and the leather 10 are laminated is obtained. In the present embodiment, by using the laminate 60, it is not necessary to use another resin layer when the leather 10 and the laminate 60 are pressed, and the manufacturing process of the leather laminate 1 can be simplified. FIG. 17 shows that the first resin layer 65 is not provided between the aluminum nonwoven fabric 20 and the leather 10 in the leather laminate 1 after the thermocompression bonding, but is not limited thereto. A part may be provided between the aluminum nonwoven fabric 20 and the leather 10.

  FIG. 18 is an explanatory diagram for describing a modified example of the method of manufacturing a leather laminate using the laminate. As shown in FIG. 18, the laminated body 60, the second resin 37, and the leather 10 are laminated on the facing surface 101a of the lower mold 101 in this order (lamination step ST61). The surface resin layer 12 of the leather 10 faces the facing surface 102a. Further, the second resin 37 is disposed between the base cloth 11 and the first resin layer 65 of the laminate 60.

  The hot press apparatus 100 thermocompression-bonds the leather 10, the second resin 37, and the laminate 60 (thermocompression step ST62). Thus, pressure and heat are applied to the leather 10, the second resin 37, and the laminate 60. Then, the second resin 37 and the first resin layer 65 of the laminate 60 are melted by the heat from the hot press device 100, and the second resin 37 is in contact with the first resin layer 65 and also on the side of the base cloth 11. Flow. As a result, the second resin 37 is also impregnated into a part of the base cloth 11 to form the resin-impregnated layer 32. Through the above steps, the leather laminate 1 in which the aluminum nonwoven fabric 20 and the leather 10 are laminated is obtained. In this modified example, the laminate 60 has the first resin layer 65 and the second resin 37 is used, so that the adhesive strength between the aluminum nonwoven fabric 20 and the leather 10 can be improved.

(Example)
Table 1 below shows the results of comparing the thermal conductivity of the leather laminates of Examples 1 to 18, the resin-impregnated aluminum nonwoven fabric, and Comparative Examples. As shown in the first embodiment and the modified examples described above, the leather laminates of Examples 1 to 15 are obtained by bonding leather and the aluminum nonwoven fabric 20 by hot pressing and bonding. In the leather 10 used in Examples 1 to 11, the surface resin layer 12 is formed of polyvinyl chloride, and the fibers of the base cloth 11 are formed of polyester. In Examples 12 to 15, natural leather was used.

  Examples 16 and 17 are resin-impregnated aluminum nonwoven fabrics 50 having no leather or natural leather, as described in the second embodiment described above. In Example 18, the leather 10 and the aluminum nonwoven fabric 20 were bonded together without being pressed by a hot press. In Examples 1 to 18, polyurethane is used as the resin 31 impregnated in the aluminum nonwoven fabric 20.

In the leather laminate and the resin-impregnated aluminum nonwoven fabric shown in Examples 1 to 18, the content of the aluminum nonwoven fabric, the pressing force in the thermocompression bonding step by hot pressing, and the presence / absence of evacuation in the thermocompression bonding step were varied. The content of the aluminum nonwoven fabric is the mass of the aluminum nonwoven fabric per unit area. The content of the aluminum nonwoven fabric is 200 g / m ² or more and 550 g / m ² or less. When the content of the aluminum nonwoven fabric is less than 200 g / m ² , the bonding between the aluminum fibers 21 becomes insufficient, and it becomes difficult to produce a leather laminate. When the content of the aluminum nonwoven fabric is more than 550 g / m ² , the flexibility of the leather laminate is impaired, and processing becomes difficult. By setting the content of the aluminum nonwoven fabric to 200 g / m ² or more and 550 g / m ² or less, the leather laminate is easily manufactured by hot pressing, has good thermal conductivity, and has good workability. .

  The leather laminate and the resin-impregnated aluminum nonwoven fabric shown in Examples 1 to 18 were manufactured by changing the pressing force in the thermocompression bonding step from 0.015 MPa to 3.5 MPa, respectively. Further, the leather laminate and the resin-impregnated aluminum nonwoven fabric shown in Examples 1 to 8 and Examples 12 to 15 were subjected to a thermocompression bonding process in a vacuum atmosphere, and the leather laminate and the resin-impregnated aluminum nonwoven fabric shown in Examples 9 to 11 Was subjected to a thermocompression bonding process in the air without vacuuming.

  Comparative Examples 1 and 2 are sheet-shaped samples having no aluminum nonwoven fabric and using only leather and natural leather, respectively.

  In the heat conduction comparative test, 9 g of ice was placed on each sample piece in a test environment at room temperature of about 25 ° C. and humidity of about 45%, and the time until all the ice melted was measured. In addition, in order to remove the influence of air conditioning, the upper part of the sample piece was covered with vinyl.

  As shown in Table 1, Comparative Examples 1 and 2 each had a melting time of 66 minutes. In contrast, the melting times of the leather laminates and the resin-impregnated aluminum nonwoven fabrics of Examples 1 to 18 are all 60 minutes or less. From these results, it was shown that the leather laminate and the resin-impregnated aluminum nonwoven fabric of Examples 1 to 18 had an aluminum nonwoven fabric, and thus had higher thermal conductivity than Comparative Examples 1 and 2.

  Comparing the leather laminates of Examples 1 to 15, the leather laminates of Examples 1 to 5 and 9 to 15 have a shorter melting time than the leather laminates of Examples 6 to 8. Specifically, the melting time of Examples 1 to 5 and 9 to 15 is 39 minutes or more and 55 minutes or less, and the melting time of Examples 6 to 8 is 58 minutes or more and 60 minutes or less. Thus, it was shown that by setting the pressing force in the thermocompression bonding step to be 0.2 MPa or more and 3.5 MPa or less, the leather laminate can obtain good thermal conductivity.

  When Examples 1 to 5 are compared with Examples 9 to 11, the melting time is 55 minutes or less. Thus, it was shown that the leather laminate had good thermal conductivity regardless of whether the thermocompression bonding step using a hot press was performed in an evacuated atmosphere or in air. Further, comparing Examples 1 to 5 and Examples 12 to 15, the melting time is 55 minutes or less in all cases. This indicates that the leather laminate can obtain good thermal conductivity regardless of whether the leather whose surface resin layer is formed of polyvinyl chloride is bonded to the aluminum nonwoven fabric or natural leather. Was done.

  Further, the melting times of the resin-impregnated aluminum nonwoven fabrics shown in Examples 16 and 17 are 41 minutes and 39 minutes, respectively. This indicates that the resin-impregnated aluminum nonwoven fabric has excellent thermal conductivity, and the leather laminate in which the resin-impregnated aluminum nonwoven fabric and the leather are bonded also has good thermal conductivity. Further, in the leather laminate shown in Example 18, the melting time is 51 minutes. Thereby, it was shown that the leather laminate was not limited to the case where it was thermocompression-bonded by a hot press, and good thermal conductivity was obtained by bonding the aluminum nonwoven fabric and the leather.

  FIG. 19 is a cross-sectional photograph of the leather laminate according to the example. FIG. 20 is a photograph of a cross section of a leather laminate according to another example. FIGS. 19 and 20 are cross-sectional photographs showing the interface between the leather 10 and the aluminum nonwoven fabric 20 in an enlarged manner, respectively. 19 and 20, cross sections of the leather laminate were cut and polished, respectively, and observed with an optical microscope.

  As shown in FIGS. 19 and 20, in each of the leather laminates 1 and 1B, the resin 31 is impregnated between the aluminum fibers 21 of the aluminum nonwoven fabric 20. As shown in FIG. 19, in the leather laminate 1, the leather 10 and the aluminum nonwoven fabric 20 are laminated in contact with each other, and the intermediate resin layer 33 is not formed between the leather 10 and the aluminum nonwoven fabric 20. In other words, in the leather laminate 1 shown in FIG. 19, the resin 31 impregnated in the aluminum nonwoven fabric 20 is in contact with the leather 10, so that the aluminum nonwoven fabric 20 and the leather 10 are bonded to each other.

  In the leather laminate 1B shown in FIG. 20, an intermediate resin layer 33 is formed between the leather 10 and the aluminum nonwoven fabric 20. The thickness of the intermediate resin layer 33 is about 200 μm or more and 350 μm or less. In the leather laminate 1B, the leather 10 and the aluminum nonwoven fabric 20 are bonded via the intermediate resin layer 33.

(Case for electronic equipment)
FIG. 21 is a plan view of an electronic device case using a leather laminate. FIG. 22 is a side view of the electronic device case when the electronic device is stored. FIG. 23 is a sectional view taken along the line XXIII-XXIII ′ of FIG.

  The electronic device case 300 shown in FIGS. 21 to 23 is a case for storing the electronic device 340 (see FIG. 22). The electronic device 340 is, for example, a portable communication device or an information device such as a smartphone, a tablet device, or a mobile phone.

  The electronic device case 300 includes the leather laminate 1 described above. Specifically, as shown in FIG. 21, the electronic device case 300 is a notebook-type case including a cover 310, a housing 320, and a metal plate 330. FIG. 21 is a plan view when viewed from the back surface S2 of the cover 310. The cover 310 has a base 311, a lid 312, and a connection 313. The cover 310 is formed of the leather laminate 1, and the base 311, the lid 312, and the connecting portion 313 are formed of one continuous leather laminate 1. However, the present invention is not limited to this, and at least a part of the cover 310, for example, the base 311 and the lid 312 may be formed of the leather laminate 1.

  When the cover 310 is opened, a connecting portion 313 is provided between the base 311 and the lid 312 in the first direction Dx. In the following description, directions parallel to the back surface S2 of the base 311 are referred to as a first direction Dx and a second direction Dy. The first direction Dx is orthogonal to the second direction Dy. The first direction Dx is a direction parallel to the short side of the base 311, and the second direction Dy is a direction parallel to the long side of the base 311. The third direction Dz is orthogonal to the first direction Dx and the second direction Dy. That is, the third direction Dz is a direction perpendicular to the back surface S2 of the base 311.

  The base 311 is provided with a storage body 320 for fixing the electronic device 340. The housing 320 is made of, for example, resin and has a bottom plate 321 and a side plate 322. The side plate 322 is provided in a frame shape surrounding the bottom plate 321. Electronic device 340 is fixed in a space formed by bottom plate 321 and side plate 322. By fixing the electronic device 340 to the storage body 320, the electronic device 340 can be stored in the cover 310 formed of the leather laminate 1. Note that the housing 320 shown in FIGS. 21 to 23 is merely an example, and it is sufficient that the electronic device 340 can be fixed, and housings 320 of various configurations can be applied.

  The base 311 and the bottom plate 321 are provided with an opening 311a and an opening 321b at positions corresponding to a camera, a sensor, and the like of the electronic device 340, respectively.

  The connecting part 313 connects the base part 311 and the lid part 312 in a foldable manner. Note that a configuration may be adopted in which an opening or a slit is provided in the connecting portion 313 so that the flexibility of the connecting portion 313 is improved so that the connecting portion 313 can be easily folded. The lid 312 is provided with a pocket 314.

  As shown in FIG. 22, the cover 310 has a front surface S1 and a back surface S2. The back surface S2 is a surface facing the electronic device 340 when the electronic device 340 is stored. The front surface S1 is a surface opposite to the back surface S2.

  The bottom plate 321 of the storage body 320 is fixed to the back surface S2 of the base 311. When the electronic device 340 is stored, the back surface 340b of the electronic device 340 faces the back surface S2 of the base 311 across the bottom plate 321 in the third direction Dz. When the cover 312 is folded, the back surface S2 of the base 311 and the back surface S2 of the cover 312 face each other across the electronic device 340 in the third direction Dz. The cover 312 is provided so as to overlap the display surface 340a of the electronic device 340, and protects the display surface 340a of the electronic device 340.

  The leather laminate 1 constituting the cover 310 has good thermal conductivity. Therefore, the electronic device case 300 can satisfactorily radiate the heat generated in the electronic device 340 to the outside. Further, the aluminum nonwoven fabric 20 is provided on the back surface S2, and the leather 10 is provided on the front surface S1. That is, the aluminum nonwoven fabric 20 is provided at a position closer to the electronic device 340 than the leather 10 when the electronic device 340 is stored. For this reason, the heat generated in the electronic device 340 is transmitted to the aluminum nonwoven fabric 20 favorably. Further, since the leather 10 is provided on the surface S1 visible to the user, the design of the electronic device case 300 can be improved.

  Since the aluminum nonwoven fabric 20 is a flexible sheet-shaped material, it is easy to process the leather laminate 1 into various outer diameter shapes of the cover 310, and it is also easy to process the opening 311a, the pocket portion 314, and the like. is there.

  As shown in FIG. 23, the thickness t1 of the leather 10 is, for example, about 1.5 mm. The thickness t2 of the aluminum nonwoven fabric 20 is, for example, about 1.0 mm.

  An opening 321 a is provided in the bottom plate 321 of the storage body 320. The metal plate 330 is provided inside the opening 321a and contacts the back surface S2 of the base 311. When the electronic device 340 is stored, the metal plate 330 is disposed between the electronic device 340 and the aluminum nonwoven fabric 20 in the third direction Dz. The metal plate 330 is preferably in contact with the back surface 340 b of the electronic device 340. The thickness of the metal plate 330 is equal to the thickness of the bottom plate 321. The thickness of the metal plate 330 and the bottom plate 321 is, for example, about 1.5 mm. The metal plate 330 is formed of a metal material having good thermal conductivity, such as aluminum. As a result, heat generated in the electronic device 340 is transmitted to the aluminum nonwoven fabric 20 via the metal plate 330.

  Note that the metal plate 330 is not limited to the configuration provided in the opening 321a, and may be provided in at least a part of the housing 320. Further, FIGS. 21 and 23 show an example in which the storage body 320 and the metal plate 330 are used as separate members, but the present invention is not limited to this. For example, the housing 320 may be formed of a metal material such as aluminum and the bottom plate 321 may not have the opening 321a.

(Modified example of electronic device case)
FIG. 24 is a plan view showing a modification of the electronic device case using the leather laminate. FIG. 25 is a sectional view taken along the line XXV-XXV ′ of FIG. As shown in FIG. 24, in the electronic device case 300A of the modified example, the housing 320A is provided to face the back surface S2 of the base 311A of the cover 310A. Note that the base 311A, the lid 312A, and the connecting portion 313A of the cover 310A are formed of the leather laminate 1 similarly to the cover 310 shown in FIGS. 21 to 23.

  The housing 320A is provided with an opening 320Aa. When the electronic device 340 is stored, the storage body 320A is provided so as to overlap the peripheral portion of the electronic device 340, and the display screen of the electronic device 340 can be visually recognized through the opening 320Aa.

  As shown in FIG. 25, a storage space for storing the electronic device 340 is formed between the storage body 320A and the back surface S2 of the cover 310A. The storage space is a pocket-type space. Of the four sides on the outer periphery of the storage body 320A, three sides excluding one side 320As on the connecting portion 313A side are connected to the peripheral edge of the base 311A. An opening OP for taking in and out the electronic device 340 is provided between one side 320As of the housing 320A and the back surface S2 of the cover 310A.

  In such an electronic device case 300A in which the electronic device 340 is stored in the storage space, the leather laminate 1 can be applied to the cover 310A. When electronic device 340 is stored in the storage space, back surface 340b of electronic device 340 contacts aluminum nonwoven fabric 20 provided on back surface S2 of cover 310A. Thereby, heat generated in electronic device 340 can be transmitted to aluminum nonwoven fabric 20 in a favorable manner.

  The storage body 320A is also formed of the leather laminate 1. Aluminum nonwoven fabric 20 is provided on a surface of storage body 320A facing electronic device 340. Leather 10 is provided on the surface of storage body 320A opposite to electronic device 340. When electronic device 340 is stored in the storage space, the periphery of display surface 340a of electronic device 340 contacts aluminum nonwoven fabric 20 of storage body 320A. Thereby, heat generated in the electronic device 340 can be radiated well. In the present modification, the housing 320 made of resin is not provided, so that the configuration of the electronic device case 300A can be simplified.

  The electronic device cases 300 and 300A shown in FIGS. 21 to 25 are merely examples. The shapes, dimensions, and thicknesses of the covers 310 and 310A in a plan view can be changed according to the type of the electronic device 340. In addition, the configurations of the storage bodies 320 and 320A for fixing and storing the electronic device 340 can be appropriately changed. The leather laminate 1 can be applied to various electronic device cases.

DESCRIPTION OF SYMBOLS 1, 1A, 1B Leather laminated body 1a Front surface 1b Back surface 10, 10A Leather 11 Base cloth 12 Surface resin layer 13 Collagen layer 14 Silver surface layer 20 Aluminum nonwoven fabric 21 Aluminum fiber 22 Gap 31 Resin 32 Resin impregnated layer 32a First resin impregnated layer 32b second resin impregnated layer 33 intermediate resin layer 34, 36 first resin 35, 37 second resin 50, 51 resin impregnated aluminum nonwoven fabric 52 aluminum fiber layer 60, 61, 62 laminate 65 first resin layer 66 second resin layer DESCRIPTION OF SYMBOLS 100 Hot press apparatus 200 Automobile sheet 300, 300A Electronic device case 310, 310A Cover 311, 311A Base 312, 312A Lid 320, 320A Storage body 330 Metal plate 340 Electronic device ST1 Laminating process ST2 Thermocompression bonding process

Claims (27)

Leather and
And an aluminum nonwoven fabric bonded to the leather,
Leather laminate. The aluminum nonwoven fabric has a plurality of aluminum fibers, and the plurality of aluminum fibers are randomly oriented with gaps and bonded to form a sheet,
A resin is impregnated in the gap between the plurality of aluminum fibers, and the leather and the aluminum nonwoven fabric are bonded to each other,
A leather laminate according to claim 1. Wherein the resin is a thermoplastic resin,
The leather laminate according to claim 2. The content of the aluminum nonwoven fabric is 200 g / m ² or more and 550 g / m ² or less,
A leather laminate according to claim 2 or claim 3. The leather is characterized by being any of artificial leather, synthetic leather or natural leather,
The leather laminate according to any one of claims 1 to 4. The leather is artificial leather or synthetic leather,
The leather has a base cloth and a surface resin layer bonded to one surface of the base cloth,
The aluminum nonwoven fabric is bonded to the other surface of the base fabric opposite to the one surface,
The leather laminate according to any one of claims 1 to 4. A sheet material having the leather laminate according to any one of claims 1 to 6,
The surface of the leather of the leather laminate, characterized in that it is provided facing the direction of contact or approach by a person,
Sheet material. Leather, a method for producing a leather laminate having an aluminum nonwoven fabric,
A lamination step of laminating a first resin, the aluminum nonwoven fabric, and a second resin in this order on the leather;
A thermocompression bonding step of thermocompression bonding the leather, the first resin, the aluminum nonwoven fabric, and the second resin.
A method for producing a leather laminate. The first resin and the second resin are thermoplastic resins,
A method for producing a leather laminate according to claim 8. The pressure in the thermocompression bonding step is not less than 0.2 MPa and not more than 3.5 MPa,
A method for producing a leather laminate according to claim 8. The leather is characterized by being any of artificial leather, synthetic leather or natural leather,
A method for producing a leather laminate according to any one of claims 8 to 10. The thermocompression bonding is a hot press that performs pressure bonding by applying pressure in a direction perpendicular to the surface of the leather,
A method for producing a leather laminate according to any one of claims 8 to 11. The temperature of the thermocompression bonding is 120 ° C. or higher,
A method for producing a leather laminate according to any one of claims 8 to 12. Aluminum nonwoven fabric,
Characterized by having a resin impregnated in the aluminum nonwoven fabric,
Resin impregnated aluminum non-woven fabric. A laminating step of laminating a resin on at least one surface of the aluminum nonwoven fabric,
Thermocompression bonding the aluminum nonwoven fabric and the resin, and a thermocompression bonding step of impregnating the resin with the aluminum nonwoven fabric,
A method for producing a resin-impregnated aluminum nonwoven fabric. A laminating step of laminating leather on a resin-impregnated aluminum nonwoven fabric in which a resin is impregnated into an aluminum nonwoven fabric,
A method for producing a leather laminate, comprising: a thermocompression bonding step of thermocompression bonding the resin-impregnated aluminum nonwoven fabric and the leather. A laminating step of laminating a resin-impregnated aluminum nonwoven fabric in which an aluminum nonwoven fabric is impregnated with a first resin, a second resin and leather in this order;
A method for producing a leather laminate, comprising: a thermocompression bonding step of thermocompression bonding the resin-impregnated aluminum nonwoven fabric, the second resin, and the leather. Aluminum nonwoven fabric impregnated with resin,
And a resin layer provided on at least one surface of the aluminum nonwoven fabric. A laminating step of laminating a resin on at least one surface of the aluminum nonwoven fabric,
By thermocompression bonding the aluminum nonwoven fabric and the resin, a thermocompression bonding step of impregnating the resin with the aluminum nonwoven fabric and forming a resin layer on at least one surface of the aluminum nonwoven fabric,
A method for manufacturing a laminate. Laminating step of laminating leather on a laminate in which a resin layer is provided on at least one surface of an aluminum nonwoven fabric,
A thermocompression bonding step of thermocompression bonding the laminate and the leather,
A method for producing a leather laminate. A lamination step in which a laminate in which a first resin layer is provided on at least one surface of an aluminum nonwoven fabric, a second resin, and leather are laminated in this order;
A thermocompression bonding step of thermocompression bonding the laminate, the second resin, and the leather,
A method for producing a leather laminate. A leather laminate according to any one of claims 1 to 6, characterized in that:
Case for electronic equipment. A back surface facing the electronic device when the electronic device is stored, and having a surface opposite to the back surface,
The aluminum nonwoven fabric is provided on the back surface, and the leather is provided on the front surface,
An electronic device case according to claim 22. A cover composed of the leather laminate,
A housing provided on the back surface of the cover to fix the electronic device,
An electronic device case according to claim 23. A metal plate is provided on at least a part of the storage body,
An electronic device case according to claim 24. A cover composed of the leather laminate,
A storage body that is provided to face the back surface of the cover and forms a storage space for housing the electronic device between the storage device and the back surface of the cover.
An electronic device case according to claim 23. The storage space is a pocket-type space, wherein an opening is provided on one side of the storage body,
An electronic device case according to claim 26.