WO2021117333A1 - 積層体 - Google Patents

積層体 Download PDF

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Publication number
WO2021117333A1
WO2021117333A1 PCT/JP2020/038729 JP2020038729W WO2021117333A1 WO 2021117333 A1 WO2021117333 A1 WO 2021117333A1 JP 2020038729 W JP2020038729 W JP 2020038729W WO 2021117333 A1 WO2021117333 A1 WO 2021117333A1
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WO
WIPO (PCT)
Prior art keywords
layer
leather
thickness
laminate
natural
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/038729
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
直幸 谷口
祥晃 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gst Autoleather Japan
Gst Autoleather Japan LLC
Original Assignee
Gst Autoleather Japan
Gst Autoleather Japan LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gst Autoleather Japan, Gst Autoleather Japan LLC filed Critical Gst Autoleather Japan
Priority to DE112020003462.3T priority Critical patent/DE112020003462T5/de
Priority to CN202080056493.4A priority patent/CN114728489A/zh
Priority to KR1020227002936A priority patent/KR20220079513A/ko
Priority to JP2021563762A priority patent/JPWO2021117333A1/ja
Priority to US17/783,625 priority patent/US20230023169A1/en
Publication of WO2021117333A1 publication Critical patent/WO2021117333A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/58—Seat coverings
    • B60N2/5891—Seat coverings characterised by the manufacturing process; manufacturing seat coverings not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/10—Removing layers, or parts of layers, mechanically or chemically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
    • B32B9/025—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch comprising leather
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/58—Seat coverings
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0246—Acrylic resin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0292—Polyurethane fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/08—Animal fibres, e.g. hair, wool, silk
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/16—Structural features of fibres, filaments or yarns e.g. wrapped, coiled, crimped or covered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/51—Elastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/582—Tearability
    • B32B2307/5825—Tear resistant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2601/00—Upholstery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/003—Interior finishings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

Definitions

  • the present invention relates to a laminate, particularly a laminate in which leather and a fiber material from which a reticular layer has been removed are laminated.
  • natural leather has been used in various fields such as vehicle interior materials, interior materials, bags, shoes, and clothing, taking advantage of its unique texture and excellent material characteristics such as high quality.
  • natural leather products have a big problem because silver floating (a phenomenon in which the papillary layer and the reticular layer of leather are delaminated and the appearance is deteriorated) may occur during use.
  • natural leather is a heavy material, when products such as bags are made of natural leather, the weight may be a concern.
  • natural leather products sometimes felt hard and uncomfortable to the touch, especially at the beginning of use. Therefore, if these points of natural leather are improved, the attractiveness of natural leather may be further enhanced and the demand may be promoted.
  • Patent Document 1 describes a leather laminate in which a part of the back surface of tanned leather is deleted and the leather laminate is bonded to a base layer material using a hot melt adhesive. Further, Patent Document 2 describes a skin material in which natural leather and a mesh-like cloth are laminated. Further, Patent Document 3 discloses that the ratio of the thickness of the grain layer to the thickness of cowhide is specified in order to obtain a material having low heat shrinkage suitable for an instrument panel of an automobile.
  • the present invention has been made in view of the above problems, and an object of the present invention is to suppress deterioration of appearance due to silver floating and to improve weight and hardness while utilizing the high quality texture of natural leather. It is in.
  • the present invention (1) A leather layer made of natural leather from which a part or all of the reticular layer has been removed, and A fiber layer made of natural and / or synthetic fibers located on the back side of the leather layer, and An adhesive layer between the leather layer and the fiber layer, It is a laminated body having A laminate, wherein the ratio of the thickness of the reticular layer in the leather layer is 5% or less and the ratio of the thickness of the papillary layer is 95% or more. (2) The laminate according to (1), wherein the thickness of the leather layer is less than 0.3 to 0.5 mm.
  • the present invention it is possible to suppress the deterioration of the appearance due to the floating of silver and to improve the weight and hardness while utilizing the high quality texture of natural leather.
  • the laminate 1 of the present invention has a leather layer 2, a fiber layer 3, and an adhesive layer 4 between the leather layer and the fiber layer.
  • the leather layer 2 in the laminate 1 of the present invention is made of natural leather from which the reticular layer has been largely removed.
  • the "natural leather” may be derived from mammals such as cows, horses, pigs, goats, sheep, deer and kangaroos, birds such as ostriches, and reptiles such as snakes and crocodiles. Not limited to these. Of these, cowhide, which is highly versatile and has a large area, is preferable.
  • the leather collection site of the organism from which the natural leather is collected is not particularly limited.
  • the raw skin is composed of the epidermis, dermis and subcutaneous tissue (muscle, adipose tissue, etc.).
  • Leather is made by tanning only the dermis. As a tanning method, tannin tanning, chrome tanning and a combination tanning thereof and the like are used.
  • the dermis is divided into a papillary layer in the upper layer and a reticular layer in the lower layer with the bottom of the hair root as the boundary.
  • the reticular layer occupies most of the dermis.
  • the leather layer 2 of the present invention is configured by significantly removing the reticular layer of leather.
  • the method for removing the reticular layer is not particularly limited, and can be carried out by using a conventional method, scraping, cutting, or tearing. For example, it is done by thinly shaving the reticular layer to the desired thickness using a shaving machine.
  • the ratio of the thickness of the reticular layer in the leather layer is 5% or less, and the ratio of the thickness of the papillary layer is 95% or more. Further, the ratio of the thickness of the reticular layer is preferably 3% or less, the ratio of the thickness of the papillary layer is preferably 97% or more, the ratio of the thickness of the reticular layer is 1% or less, and the ratio of the thickness of the papillary layer. Is more preferably 99% or more.
  • silver floating is preferably prevented, and the weight of the finally obtained laminate is preferable. It will be lighter.
  • the thickness of the leather layer is preferably 0.3 to 0.5 mm, more preferably 0.3 to 0.45 mm, and particularly preferably 0.3 to 0.4 mm. If the thickness of the leather layer exceeds the above range, problems such as silver floating may occur and the weight of the finally obtained laminate may become heavy. In the present invention, the thickness of each layer is taken as an average value obtained by measuring the thickness of 10 points on the cross section of the laminated body.
  • any fiber layer 3 can be used as long as the object of the present invention is not impaired.
  • natural fibers such as cotton and wool, polyethylene, polyamide, polyester and acrylic can be used.
  • Synthetic fibers such as polyurethane, recycled fibers such as rayon, and non-woven fabrics, knitted fabrics or woven fabrics made of a combination thereof can be used. From the viewpoint of adhesiveness, cushioning property and environment, knitted fabrics, woven fabrics and non-woven fabrics made of spun yarns (short fibers) of natural fibers are preferably used.
  • the thickness of the fiber layer is preferably 0.2 to 2.0 mm, more preferably 0.3 to 1.5 mm, and particularly preferably 0.5 to 1.2 mm.
  • the weight per unit area of the fiber layer is preferably 30 to 800 g / m 2 , more preferably 40 to 350 g / m 2 , and particularly preferably 50 to 150 g / m 2.
  • a laminate having improved weight and hardness of natural leather can be obtained.
  • any adhesive can be used as long as the object of the present invention is not impaired.
  • an acrylic resin-based adhesive, a urethane resin-based adhesive, or a cyanoacrylate-based adhesive Cellulous adhesives, ethylene-vinyl acetate adhesives, epoxy resin adhesives, silicone adhesives, rubber adhesives, vinyl chloride adhesives, polyamide adhesives and the like.
  • an acrylic resin-based adhesive or a urethane resin-based adhesive is used.
  • one or a plurality of surface treatment layers are optionally formed according to desired purposes such as coloring, gloss adjustment, and abrasion resistance. May be good.
  • the laminate 1 is formed by adhering urethane foam, non-woven fabric, knitted fabric, woven fibers, etc. under the fiber layer 3 of the laminate 1 of the present invention by an adhesive, frame lamination, or the like. Can be provided with cushioning properties to further improve the tactile sensation from the leather layer 2.
  • the weight per unit area of the laminate 1 of the present invention is preferably 300 to 600 g / m 2 , more preferably 300 to 500 g / m 2 , and particularly preferably 300 to 450 g / m 2. preferable.
  • the laminate of the present invention can achieve a weight reduction of 20 to 70% as compared with natural leather.
  • the elongation rate of the laminate 1 of the present invention is preferably 30 to 80%, more preferably 35 to 65%, and particularly preferably 40 to 60%. Since the laminated body of the present invention has the above-mentioned elongation rate, wrinkles are less likely to occur, sewing is easy, and appropriate elasticity is achieved.
  • the method for measuring the elongation rate is the elongation at the time of cutting JIS K6251 or the fabric test method for JIS L 1096 woven fabrics and knitted fabrics.
  • the laminate of the present invention has (A) a step of tanning the raw leather to make leather, (B) a step of removing a predetermined amount of the reticulated layer of the leather to obtain a leather layer, and (C) the leather layer.
  • the fiber layer can be produced by a step of laminating through an adhesive layer.
  • the step of laminating is not particularly limited, but a method of applying or spraying a liquid adhesive to the back side and / or the fiber layer of the leather layer to superimpose and dry the two, and applying the hot melt adhesive layer to the leather layer and the fiber layer. It can be done by a method of sticking with a pinch, a press ironing machine or the like.
  • the laminate of the present invention has advantages such as no silver floating, less wrinkles, easy sewing, light weight, and high tear strength, and has advantages such as vehicle interior materials, interior materials, bags, shoes, and clothing. It can be used in various fields such as. Further, the laminate of the present invention satisfies the physical properties required for a vehicle interior material, particularly a vehicle seat expected to have appropriate elasticity.
  • Example 1 The reticular layer of leather (thickness 1.2 mm, weight 980 g / m 2 per unit area) prepared by tanning the raw cow skin is completely scraped off using a shaving machine (manufactured by Rizzi), and the papillae are used. Only the layer was left to form a leather layer (thickness 0.40 mm).
  • a liquid adhesive water-soluble acrylic resin manufactured by Lanxess
  • the layers were laminated and dried to obtain a laminate (thickness 0.62 mm, weight per unit area 407 g / m 2 ).
  • Example 2 A reticulated layer of leather (thickness 1.2 mm, weight 980 g / m 2 per unit area) prepared by tanning the raw cow skin is shaved using a shaving machine (manufactured by Rizzi) to form a leather layer. (Thickness 0.42 mm; the ratio of the thickness of the reticulated layer is 5%, the ratio of the thickness of the papillary layer is 95%).
  • a liquid adhesive water-soluble acrylic resin manufactured by Lanxess
  • the layers were laminated and dried to obtain a laminate (thickness 0.64 mm, weight per unit area 430 g / m 2 ).
  • Cowhide prepared by tanning the raw leather (thickness 1.2 mm, weight per unit area 980 g / m 2 ).
  • Elongation rate 100 x length when cut (cm) / length when no load (cm) 2. Tear strength The tear strength of each laminated body is measured by pulling the test piece of the laminated body test piece (40 mm x 150 mm, slit 100 mm) up and down with a tensile tester (tensile speed: 200 ⁇ 20 mm per minute), and the test piece breaks.
  • Comparative Example 1 in which the ratio of the thickness of the papillary layer is 80% is inferior to the laminate of the present invention in terms of silver floating, improvement in weight, and beauty after sewing. there were. Further, in Comparative Example 2 in which the fiber layer was not laminated, the strength was remarkably inferior and sewing was impossible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Laminated Bodies (AREA)
PCT/JP2020/038729 2019-12-09 2020-10-14 積層体 Ceased WO2021117333A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE112020003462.3T DE112020003462T5 (de) 2019-12-09 2020-10-14 Laminierter Körper
CN202080056493.4A CN114728489A (zh) 2019-12-09 2020-10-14 层压体
KR1020227002936A KR20220079513A (ko) 2019-12-09 2020-10-14 적층체
JP2021563762A JPWO2021117333A1 (https=) 2019-12-09 2020-10-14
US17/783,625 US20230023169A1 (en) 2019-12-09 2020-10-14 Laminate

Applications Claiming Priority (2)

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JP2019221856 2019-12-09
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DE112020003462T5 (de) 2022-03-31
US20230023169A1 (en) 2023-01-26

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