Split leather product and manufacturing method therefor

A technology of split leather and products, which can be applied to layered products, rubber layered products, synthetic resin layered products, etc., and can solve problems such as lack of sense of luxury

Inactive Publication Date: 2011-04-13
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the previous grain-style split leather product is folded 110 times, it is as follows: Figure 1B As shown, only rough creases 111 without a sense of luxury that are different from grained leather 100 can be obtained

Method used

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  • Split leather product and manufacturing method therefor
  • Split leather product and manufacturing method therefor
  • Split leather product and manufacturing method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0152] Melt spinning was performed on sea-island type mixed spun fibers having a polyethylene terephthalate (PET) resin (island component) and polyethylene (sea component) at a mass ratio of 50 / 50. Then, the obtained fibers were stretched, crimped, and cut to obtain staple fibers with a fineness of 4 dtex and a cut length of 51 mm.

[0153] After passing the obtained short fibers through a carding machine to form a web, a predetermined number of webs are laminated to form a layer by cross lapper. And, the overlapped web was needle-punched with a felting needle, thereby obtaining an entangled nonwoven fabric including sea-island type fibers.

[0154] Next, shrink the obtained entangled nonwoven in warm water, and after drying, obtain a smooth surface, a thickness of 2.2 mm, and a weight per unit area of ​​500 g / m by hot pressing. 2 Tangled non-woven fabric. Then, the smoothed entangled nonwoven fabric was impregnated with a polycarbonate-based polyurethane DMF solution (solid...

Embodiment 2

[0161] The epidermis with a thickness of about 0.2 mm obtained by cutting it thinner was used instead of the epidermis with a thickness of about 0.5 mm, and the rest was the same as in Example 1 to obtain a split skin product. The obtained split leather product had a thickness of 1.29 mm, a split skin thickness of 1.02 mm, a skin layer thickness of 0.2 mm (including an adhesive layer of 0.08 mm), and a resin layer thickness of 0.07 mm. The resulting split leather product was evaluated by the evaluation method described above. The results are shown in Table 1.

Embodiment 3

[0163]A non-woven fabric of pre-dyed polycarbonate-based polyurethane was used instead of coloring the surface of the thinned and bonded polycarbonate-based polyurethane by gravure coating, and a split leather product was obtained in the same manner as in Example 1. . The obtained split leather product had a thickness of 1.63 mm, a split skin thickness of 1.02 mm, a skin layer thickness of 0.58 mm, and a resin layer thickness of 0.03 mm. The resulting split leather product was evaluated by the evaluation method described above. The results are shown in Table 1.

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Abstract

Disclosed is a split leather product provided with: a base material comprising split leather; and a skin layer laminated on the surface of the base material. The split leather product is characterized in that the skin layer comprises a composite body of an intertwined nonwoven fabric formed from microfibers, and an elastic polymeric substance with which the gaps of the intertwined nonwoven fabric are impregnated. In such a split leather product, the intertwined nonwoven fabric, like the horizontally and vertically crisscrossing collagen fibers in the reticular dermis, has the effect of increasing physical strength without detracting from the leather-like texture. Thus it is possible to obtain a split leather product that resembles leather not only in outward appearance, but also in the feel based on the wrinkles and the like caused by folding.

Description

technical field [0001] The present invention relates to a split leather product using split leather obtained by removing a grain portion from natural leather (hereinafter, sometimes simply referred to as leather). In particular, it relates to a split leather product having a texture similar to raised leather such as grained leather or suede leather, and a method for manufacturing the same. Background technique [0002] The skin structure of animals such as mammals is formed of two layers, the epidermis and the dermis, which have different tissue structures. Skins obtained from animals are processed into leather and used as follows. First, the skin is depilated to remove the epidermis to obtain the dermis. The dermis mainly contains criss-cross collagen fibers, which help maintain the high physical strength of the leather. [0003] The dermis can be divided into the papillary layer on the superficial side and the reticular layer on the inner side according to its organizat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14B7/02B32B5/02B32B9/02B32B27/40D06N3/14
CPCC14B7/04B32B9/04B32B5/22B32B5/02C14B7/02B32B5/022B32B5/08B32B7/12B32B9/025B32B9/047B32B25/02B32B25/10B32B25/14B32B2260/021B32B2260/046B32B2262/0207B32B2262/0238B32B2262/0253B32B2262/0261B32B2262/0276B32B2262/12B32B2307/3065B32B2307/50B32B2307/54B32B2307/5825B32B2307/718B32B2307/72B32B2437/00B32B2439/06B32B2439/46B32B2479/00B32B2605/003Y10T428/2495Y10T428/24967Y10T428/2395Y10T442/614
Inventor 米田久夫木村喜雄胁本芳明宫内清彦
Owner KURARAY CO LTD
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