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Elastic artificial leather and production method therefor

一种伸缩性、人造革的技术，应用在加压缩水、纺织品和造纸、运输和包装等方向，能够解决未公开改善伸长性及伸缩性的人造革、未公开改善人造革纵向伸长性、伸缩性的简便且有效的方法等问题，达到兼备充实感、形态稳定性优异、兼备手感的效果

Active Publication Date: 2016-09-07
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Patent Documents 3 and 4 do not describe any artificial leather having an entangled body of ultrafine fibers, and do not study any improvement in the longitudinal extensibility of the fabric.
[0007] As mentioned above, the above-mentioned prior art documents do not disclose a simple and effective method for improving the longitudinal extensibility and stretchability of artificial leather.
In addition, the above-mentioned prior art documents do not disclose artificial leather with improved longitudinal elongation and stretchability, although the density is increased to improve mechanical properties.

Method used

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  • Elastic artificial leather and production method therefor
  • Elastic artificial leather and production method therefor
  • Elastic artificial leather and production method therefor

Examples

Experimental program
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Effect test

no. 1 approach

[0167] The stretchable artificial leather according to the first embodiment of the present invention is a stretchable artificial leather composed of a fiber entanglement body including ultrafine fibers having an average single fiber fineness of 0.9 decitex or less, and the apparent density thereof is set to 0.40 g / cm 3 above, and if Figure 4 , 5 As shown, in a section parallel to its thickness direction and longitudinal direction, there is a micro-corrugated structure composed of ultrafine fibers along the longitudinal direction. The stretchable artificial leather of the present invention has moderate stretchability and sense of end of elongation in the longitudinal direction due to its relatively high apparent density and micro-corrugated structure, and at the same time has good mechanical properties. The stretchable artificial leather of the present embodiment is preferably produced by the above-mentioned production method of the present invention, but the production metho...

no. 2 approach

[0194] The stretchable artificial leather of the second embodiment can be produced, for example, by the above-mentioned production method, and has the following features. Hereinafter, the stretchable artificial leather of the second embodiment will be described in detail, and the configurations not particularly mentioned are the same as those of the stretchable artificial leather of the first embodiment.

[0195] [elasticity artificial leather]

[0196] The stretchable artificial leather of the second embodiment is a stretchable artificial leather composed of a fiber entanglement body containing ultrafine fibers having an average single fiber fineness of 0.9 decitex or less, and the apparent density thereof is set to 0.40 g / cm 3 In addition, the elongation coefficient calculated by the following formula (1) shall be 50 or less. The stretchable artificial leather of the present embodiment has moderate stretchability in the longitudinal direction and a feeling of end-of-stretch...

no. 3 approach

[0209] [elasticity artificial leather]

[0210] The stretchable artificial leather of the third embodiment in the present invention has the following features.

[0211] The stretchable artificial leather of the present embodiment has stretchability, and has the following (A) and (B) in the longitudinal strength-elongation curve measured by the method described in JIS L 1096 (1999) 8.14.1A method conditions of.

[0212] (A) Strength F at 5% elongation 5％ It is 0.1~10N / 2.5cm.

[0213] (B) Strength F at 20% elongation 20％ and the above F 5％ In the relationship, F 20％ / F 5％ 5 or more.

[0214] In the present embodiment, the strength-elongation curve is measured by the method described in JIS L 1096 (1999) 8.14.1A method. A test piece with a width of 2.5 cm was fixed to chucks with a clamp interval of 20 cm, and the test piece was pulled at a constant speed to obtain elongation and strength. Based on the results, a strength-elongation curve was prepared in which the abscis...

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Abstract

The invention provides an elastic artificial leather and production method therefor. The production method for elastic artificial leather of the present invention comprises: a step in which fibers that can be converted to superfine fibers are arranged in a web; a step in which the obtained web is tangled in order to produce an entangled nonwoven fabric; a step in which the fibers within the nonwoven fabric that can be converted to superfine fibers are converted to superfine fibers, and a substrate for artificial leather is produced; a step in which the obtained substrate for artificial leather is used to produce an artificial leather; and a step in which the obtained artificial leather is adhered to an elastic sheet that has been stretched 5-40% in the lengthwise direction, the stretched state of the elastic sheet is relaxed so that the elastic sheet contracts in the lengthwise direction and the artificial leather contracts in the lengthwise direction, the artificial leather is heat-treated while in a contracted stated, and the artificial leather is detached from the elastic sheet.

Description

[0001] This application is a divisional application of an application with a filing date of February 26, 2013, an application number of 201380011648.2, and an invention title of "Stretchable Artificial Leather and Its Manufacturing Method". technical field [0002] The present invention relates to a stretchable artificial leather having moderate elongation in the longitudinal direction, a feeling of end of stretch, and excellent softness, formability, and wearing feeling, and a method for producing the stretchable artificial leather. In addition, the present invention relates to a stretchable artificial leather having excellent mechanical strength and a moderate feeling of end-of-stretch in the longitudinal direction, and a method for producing the same. Background technique [0003] Leather-like sheets such as artificial leather are used in various applications such as clothing and raw materials because they have softness and functionality that natural leather does not have....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/00D06N3/14B32B33/00
CPCB32B33/00D06N3/00D06N3/14D06N3/0004D06N3/0011D06N3/0036D06N3/0031D06N2209/1635D06N2211/28Y10T428/24438D06C21/00D06M13/00D06N3/0027D06N3/0029
Inventor 藤泽道宪前田幸男井上和正野村康寿芦田哲哉渡边久一
Owner KURARAY CO LTD
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