Sheet of inner lattice of chamois imitation and similar leather, and its mfg. method

A technology of imitation suede and style, applied in the field of suede-like leather-like sheet and its manufacturing, which can solve the problems of deformation, insufficient breaking strength, and inability to fully meet the use of clothing

Inactive Publication Date: 2004-08-11
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although this suede-like leather-like sheet exhibits a soft style and good stretchability comparable to natural leather, it tends to deform when sewn into clothes and wear for a long time, and its breaking strength is insufficient. , cannot fully meet the purpose of clothing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0074] Hereinafter, the present invention will be described in detail with specific examples. The present invention is not limited to these Examples. Moreover, if the parts and ratios in the examples are not limited in advance, they are all about the quality. In addition, in this example, the golf glove that requires strict abrasion resistance is evaluated, so the color of the golf glove is uniformly black, which is one of the very popular colors. However, the color of the leather-like sheet of the present invention is certainly not limited. intention of.

[0075] Various physical properties were obtained by the following methods.

[0076] (1) The fineness of superfine fiber nascent fiber

[0077] The amount ejected from the spinneret is divided by the number of spinneret holes and the spinning speed to represent the mass equivalent to 10000m of fiber.

[0078] (II) Fineness of microfiber

[0079] A photograph of the cross-section of the fiber was taken with an electron m...

manufacture example 1

[0094] Fiber production example 1 (microfiber as-spun fiber (a) and microfiber (A))

[0095] Nylon 6 resin sheet (island component) and high-fluidity low-density polyethylene resin sheet (sea component) are melt-mixed in the spinneret, and the fineness is extruded from the spinning nozzle at a spinning speed of 350m / min. Spinning was performed for 10 dtex island-in-the-sea microfiber as-spun fibers (island component / sea component=50 / 50). In addition, at the time of spinning, 7 parts by mass of carbon black was added to 100 parts by mass of nylon 6. The island-in-the-sea microfiber nascent fiber is cut into short fibers 1 with a length of 51 mm after mechanical crimping without drafting. Table 1 shows the physical properties of the obtained staple fibers 1 . In addition, the physical properties of the ultrafine fibers obtained by removing the sea component in the short fibers 1 are also described in Table 1.

manufacture example 2

[0096] Fiber production example 2 (microfiber as-spun fiber (b) and microfiber (B))

[0097] Nylon 6 resin sheet (island component) and high-fluidity low-density polyethylene resin sheet (sea component) are melted and mixed in the spinneret, and the fineness is extruded from the spinning nozzle at a spinning speed of 280m / min. Spinning was performed for 10 dtex island-in-the-sea microfiber as-spun fibers (island component / sea component=50 / 50). In addition, at the time of spinning, 4.5 parts by mass of carbon black was added to 100 parts by mass of nylon 6. The island-in-the-sea microfiber nascent fiber was stretched 2.8 times, then mechanically crimped, and then cut into short fibers 2 with a length of 51 mm. Table 1 shows the physical properties of the obtained short fibers 2 . In addition, the physical properties of the ultrafine fibers obtained by removing the sea component in the short fibers 2 are also described in Table 1.

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PUM

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Abstract

The suede-finished leather-like sheet of the present invention comprises a fiber-entangled nonwoven fabric comprising a layer (I) made of a microfine fiber (A) having an average fineness of 0.5 dtex or less and a layer (II) made of a microfine fiber (B) having an average fineness equal to or less than that of the microfine fiber (A), and a polymeric elastomer impregnated in the fiber-entangled nonwoven fabric. The layers (I) and (II) are integrated by entanglement such that a ratio of the microfine fiber (A) to the microfine fiber (B) is 10 / 90 to 90 / 10 by mass. The surface of the layer (I) is a napped surface made mainly of a raised microfine fiber (A). The microfine fibers (A) and (B) are respectively formed by converting a microfine fiber-forming fiber (a) and a microfine fiber-forming fiber (b), each having an elongation at break and a tenacity of specific ranges, into microfine fibers. The suede-finished leather-like sheet simultaneously exhibits a soft feel like natural leathers and good mechanical properties, especially good shape stability and tear strength.

Description

technical field [0001] The present invention relates to a leather-like sheet and a method for its manufacture. The sheet has soft, moderate stretchability and excellent shape stability, and is suitable for clothing, especially gloves. Background technique [0002] In the past, there was a proposal that the non-woven fabric of polyester or polyamide microfiber was impregnated and coagulated to form a sheet fabric of polymer elastomer, which was raised to form a suede-like leather-like sheet (for example, Refer to patent document 1). However, the overall style of the leather-like sheet of this suede-like style tends to be hard, and the wearing feeling is not as good as natural leather when it is sewn into clothing. Still another kind of proposal is: the non-woven fabric with high stretchability proposed by the inventor of this patent, that is, the non-woven fabric made of elastic fibers and non-elastic fibers (refer to Patent Document 2). However, since this non-woven fabr...

Claims

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Application Information

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IPC IPC(8): B32B5/06B32B5/26D06N3/00
CPCY10T442/637B32B5/26B32B5/06Y10T428/2395D06N3/0013Y10T442/614D06N3/0004Y10T442/689Y10T442/2369Y10T442/622Y10T442/682A44B1/30B32B5/022B32B2262/0246B32B2262/0261B32B2262/0276B32B2437/02
Inventor 山口史洋米田久夫
Owner KURARAY CO LTD
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