Piled sheet and process for producing the same

A sheet and pile technology, used in non-woven fabrics, textiles, papermaking, textiles, etc., can solve the problems of morphological stability, insufficient surface wear resistance, elongation, and inability to withstand actual use.

Inactive Publication Date: 2008-06-11
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sheets obtained from these non-woven fabrics can indeed obtain stretchability. However, since there is no stretchable material like fabric, it is easy to be stretched and cannot withstand the actual weight when it is used for long-term and repeated weight-bearing applications such as chair surfaces. use
The above-mentioned sheets proposed so far are not sufficient from the standpoint of shape stability and surface abrasion resistance during long-term use.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0052] Embodiments of the present invention are described below using examples, but the present invention is not limited to these examples. The descriptions about the amounts and ratios such as "part" and "%" in the examples relate to the mass unless otherwise specified. Each measurement method is as follows.

[0053] 1) Fixed load tension and residual deformation

[0054] According to the test method of cloth material for sheet surface (JASO M 403-88 6.5, established by the Automotive Technology Association), the following method was used.

[0055] Cut out a test piece with a width of 80 mm and a length of 250 mm into three pieces each in the longitudinal direction and the transverse direction of the fleece sheet. Two marking lines at a distance of 100 mm perpendicular to the longitudinal direction were drawn in the center of the test piece. Then, one end of the test piece in the longitudinal direction was clamped to the clamp on the upper side of the Martens type fatigue ...

manufacture example 1

[0065] Making Polyurethane Sheet B

[0066] Poly-3-methyl-1,5-pentyl adipate with an average molecular weight of 1150, polyethylene glycol with an average molecular weight of 2000, 4,4'-diphenyl Methane diisocyanate and 1,4-butanediol are placed in a turbo type mixing type polymerizer at a molar ratio of 0.9:0.1:4:3 (4.63% based on the theoretical amount of nitrogen in the diisocyanate group) and produced by melt polymerization Polyurethane. The thermal softening temperature of the polyurethane is 125°C. The obtained polyurethane was melt-blown in a molten state to form a random fiber web. That is, the fibrous molten polyurethane ejected from the slits on both sides of the mold nozzle heated to a temperature of 260° C. is formed into fine fibers by a high-speed air flow heated to a temperature of 260° C. Captured on a metal net that moves at 2m / min, the average mesh weight of fine fibers (about 0.13dtex) is 45g / m 2 , the average thickness is 1.8mm, the apparent density is ...

manufacture example 2

[0068] Fabrication C

[0069] 80 dtex / 36f false-twisted polyester yarns are subjected to 600 T / m of additional twist yarn processing, and the weaving density is 82 threads / inch (warp) × 76 threads / inch (weft). Weaving processing, get the item pay is 70g / m 2 , thickness is 0.17mm, apparent density is 0.412g / cm 3 The plain fabric C.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

A piled sheet composed of three layers entangled / united with each other. The three layers have a layer structure which is an entangled nonwoven fabric (A) made of ultrafine fibers / polyurethane sheet (B) / woven or knit fabric (C) or an entangled nonwoven fabric (A) made of ultrafine fibers / woven or knit fabric (C) / polyurethane sheet (B), wherein the entangled nonwoven fabric (A) has piles of the ultrafine fibers formed on the surface. Part of the ultrafine fibers constituting the entangled nonwoven fabric (A) pass through the polyurethane sheet (B) and the woven or knit fabric (C) in this order or through the woven or knit fabric (C) and the polyurethane sheet (B) in this order, at least part of the ultrafine fibers passing through these being bonded to the polyurethane constituting the polyurethane sheet (B). The piled sheet having such features has excellent shape retentivity, e.g., the property of not deforming even through long-term use. The sheet has satisfactory surface wearing resistance and a soft satisfactory texture giving a high-grade feeling.

Description

technical field [0001] The present invention relates to a fleece sheet, which will not lose its shape after long-term use, has good surface wear resistance, and is soft in quality and style, and is suitable for use as vehicle seats, seat seats, sofas, Surface material (top sheet) of interior decoration products such as chairs, etc. Background technique [0002] Artificial leather is conventionally used for various purposes such as interior decoration, clothing, shoes, bags, gloves, surface materials of vehicle seats, and the like. Among them, in the field of surface materials for interior furniture such as railway vehicle seats, car seats, aircraft seats, ship seats, etc., back chairs, sofas, chairs, etc., it is strongly required to have good surface durability. It is an artificial leather that is abrasive and does not wear off after long-term use, does not wrinkle or wrinkle, and has high shape stability. [0003] In recent years, artificial leather based on fiber non-wov...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D04H1/498
CPCB32B5/26D06N3/0013D04H13/005D06N3/0004D04H13/002Y10T442/3707Y10T442/494D06N3/14D06M17/00
Inventor 吉田康弘目黑将司米田久夫山崎豪
Owner KURARAY CO LTD
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