Artificial suede-type leather and process for producing the same

A kind of technology of artificial leather and manufacturing method, which is applied in the direction of textiles and papermaking, textile, fabric, etc., can solve the problem of surface quality reduction, non-existence of sunlight fastness and good color rendering, appearance quality of artificial leather, and artificial leather cannot be obtained Leather and other problems, to achieve the effect of high resistance to sunlight fastness

Inactive Publication Date: 2005-08-03
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the depth of the color is still lost, the surface quality is significantly lowered, and a beautiful and high-quality artificial leather cannot be obtained.
[0017] As mentioned above, so far, artificial leather having a structure impregnated with polyurethane in the fiber composite of polyester ultrafine fibers has not yet existed. Leather, in addition, does not exist even knowing the situation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0138] The island component is polyethylene terephthalate, the sea component is polystyrene, the island / sea ratio = 80 / 20% by weight, the number of islands is 25 islands, and the composite fiber thickness of about 5 dtex is used to arrange fibers with polymers. Short fiber bundles, the bundles are formed into a fiber web by a carding cross-lapper, and the weight per unit area is 600g / m2 after needle punching 2felt, which is shrunk and dried. Next, this felt was dipped in an aqueous solution of polyvinyl alcohol and dried.

[0139] The sheet is soaked in trichlorethylene, squeezed to remove sea components, and dried.

[0140] On the other hand, the azo-based yellow pigment, the diketopyrrolopyrrole-based red pigment, and the phthalocyanine-based blue pigment are 0.2% by weight and 0.3% by weight of the solid content of the polyurethane, respectively. , 0.25% by weight, and 12% by weight of polycarbonate polyurethane based on the weight of the entire liquid were dispersed and ...

Embodiment 2、3、4、 comparative example 1、2、3、4

[0148] The pigments and concentrations added to the polyurethane were carried out according to the contents listed in Table 1. Further, the suede-like artificial leather was obtained in the same manner as in Example 1, except that the color tone during dyeing was changed to dark gray.

[0149] At this time, the fastness to sunlight of the artificial leather, the surface temperature of the artificial leather, the occurrence of staining of the artificial leather, the infrared reflectance of the artificial leather, the infrared reflectance of the pigment, the chroma of the pigment, and the restoration and cleaning of the pigment The results of weight loss rate determination are shown in Table 1.

Embodiment 2

[0150] In Example 2, there is excellent grade 4 sunlight fastness, and no staining occurs, and a dark gray artificial leather with excellent appearance quality is obtained.

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Abstract

It is intended to provide an artificial suede-type leather which is specking-free, has favorable surface qualities and a high light fastness and is appropriately usable for automotive sheets. Namely, a dyed artificial suede-type leather comprising a fiber interlock made up mainly of ultrafine polyester fibers of 0.7 dtex or less in thickness and polyurethane, wherein the polyurethane contains at least one yellow pigment, at least one red pigment and at least one blue pigment and the artificial suede-type leather satisfied as of the following requirements (1) to (3) measured by the methods as specified in the description: (1) having an IR reflectivity at 850 nm of 60% or more; (2) showing a surface temperature under light-irradiation of 105 DEGC or lower; and (3) having a light fastness of 3-grade or above.

Description

technical field [0001] The present invention relates to a suede type artificial leather having excellent fastness to sunlight and good color rendering and appearance quality, and a method for producing such artificial leather. Background technique [0002] The imitation suede type artificial leather with the structure of polyurethane impregnated in the fiber composite containing polyester ultrafine fibers can be used for its high-grade appearance, excellent surface feel, color rendering and other excellent qualities It is used in various fields such as high-end clothing materials, automotive interior materials, and furniture applications. [0003] Therefore, the requirements for these artificial leathers in terms of sensitivity and function have become higher and higher in recent years. [0004] For example, not only the softness and surface quality of leather materials are required to be further enhanced as characteristics required in terms of sensitivity, but also the req...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/00D06N3/14
CPCY10T442/637D06N3/0065D06N3/14Y10T442/697D06N3/0004Y10T442/684Y10T442/689Y10T442/2369Y10T442/682
Inventor 横井京子渡边幸二桥本贵史
Owner TORAY IND INC
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