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Release sheet, manufacturing method of release sheet, and synthetic leather

A release sheet and synthetic leather technology, applied in the field of release sheet, can solve the problems of dullness, lack of changes in embossing patterns, difficulty in producing textured synthetic leather products, etc., and achieve the effect of rich texture

Active Publication Date: 2015-09-02
LINTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the thermoplastic resin layer of the known release sheet, only one embossing pattern is formed by embossing the thermoplastic resin layer or it has dull fine unevenness
Therefore, the embossed pattern lacks variation, and it is difficult to manufacture synthetic leather products with richer textures, etc.

Method used

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  • Release sheet, manufacturing method of release sheet, and synthetic leather
  • Release sheet, manufacturing method of release sheet, and synthetic leather
  • Release sheet, manufacturing method of release sheet, and synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] Use standard weight 120g / m 2 Resin-impregnated paper (manufactured by LINTEC, model: FLEX-A) was used as the base sheet. This resin-impregnated paper was supplied to the release sheet manufacturing apparatus shown in the above-mentioned embodiment. In the first embossing step, the temperature of the first embossing roller (manufactured by LINTEC Corporation, model: R-101, having a so-called "Kipskin" pattern imitating a kind of cowhide) is set to 130° C. , forming a basic embossed pattern on the surface of the resin-impregnated paper. The depth of the unevenness formed on the surface of the first embossing roll was 60 μm. The depth of the concavo-convex shape of the base emboss pattern formed on the resin-impregnated paper was 60 μm.

[0106] Then, using an extruder, the resin-impregnated paper on which the basic embossed pattern was formed was laminated with a mixed resin consisting of polypropylene (manufactured by Sunallormer Ltd., PHA03A) and low-density polyethy...

Embodiment 2

[0110] The thermoplastic resin in Example 1 was changed to polymethylpentene (manufactured by Mitsui Chemicals, Inc., TPX (registered trademark), model number: DX231), the temperature of the extruder was set to 290° C., and The embossing roll used in the 2nd embossing step was changed to another 2nd embossing roll (manufactured by LINTEC Corporation, model: R-135, with "kidskin" pattern imitating goatskin), except Other than that, the release sheet and synthetic leather were manufactured in the same manner as in Example 1. Thus, a release sheet and a synthetic leather having two embossed patterns of a "calfskin" pattern and a "kidskin" pattern on the surface were obtained.

[0111] The depth of the unevenness formed on the surface of the first embossing roll was 60 μm. The depth of the concavo-convex shape of the base emboss pattern formed on the resin-impregnated paper was 60 μm. The depth of the concavo-convex shape of the 1st embossing pattern was 60 micrometers. The dep...

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Abstract

A release sheet (1) has a substrate sheet (2) and a thermoplastic resin layer (3) laminated on the substrate sheet (2), in which two or more different emboss patterns are formed on a surface of the thermoplastic resin layer (3). A manufacturing method of the release sheet (1) includes: the first embossing step for embossing the substrate sheet (2); laminating step for laminating the thermoplastic resin layer (3) on the embossed substrate sheet (2); and the second embossing step for embossing the laminated thermoplastic resin layer (3), in which the irregular form of the embossed patterns provided in the first embossing step and the second embossing step are different from each other. Synthetic leather is manufactured by using the release sheet.

Description

technical field [0001] The present invention relates to a release sheet, a method for manufacturing the release sheet, and synthetic leather. Background technique [0002] Conventionally, synthetic leather made of polyurethane resin and vinyl chloride resin has been manufactured using a release sheet called casting paper. [0003] The release sheet is produced by laminating thermoplastic resins such as polypropylene resin and polymethylpentene resin on the surface of substrate paper (base sheet), and utilizing fine grains on the surface. An embossing roll of irregular form (i.e. concave and convex shape) performs embossing on the thermoplastic resin layer, which has, for example, Figure 4A construction shown. This release sheet has an embossed pattern only on the thermoplastic resin layer 42 laminated on the backing paper (base sheet) 41 . [0004] The synthetic leather with the embossed pattern transferred on the surface is produced by coating the surface of the release ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06B32B38/06
CPCD06N2211/28B32B2317/08B32B27/32B32B2309/10B32B3/28D21H27/02B32B38/06B32B37/153B32B2309/105B32B2307/748D21H19/22B32B2270/00D06N3/0097D06N2209/1664B32B27/08B32B2309/02B32B3/30B32B27/10D21H27/001B32B7/12B32B27/304B32B27/36B32B27/40B32B29/002B32B2255/12B32B2260/028B32B2260/046B32B2307/306B32B2307/408B32B2307/538B32B2307/732B32B2307/734B32B27/06D06N3/00
Inventor 杉本英树佐佐木大辅高冈健司
Owner LINTEC CORP