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Stretch fabrics with improved heat-setting properties

An elastic and knitting technology, applied in the direction of heating/cooling fabrics, fabrics, fabric surface trimming, etc., can solve the problems of negative toughness of composite fibers, increased fabric production costs, fabric discoloration, etc.

Inactive Publication Date: 2010-02-24
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These relatively harsh conditions can have a negative effect on the toughness of the companion fiber and cause discoloration of the fabric
Also, the heat setting step is often an extra step that adds to the cost of fabric production

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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  • Stretch fabrics with improved heat-setting properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 4

[0029] Example 4 is a comparative example using a 40 denier spandex that was run through a widely used machine setup where the tension in the draft zone (ie the zone between stop-stop and the machine elastic feeder) reached 4.5 cN. This resulted in a draft of 3.35 times and a suture length equal to 3.1 mm.

[0030] After knitting, the raw fabric is subjected to a one-hour wash consisting of a 30-minute heat cycle followed by a 30-minute wash at 90°C; followed by tumble drying and then placed at 20°C + / - 2°C against Humidity is 65% + / - 2%. The purpose of this test is to know the density in grams per square meter and the width in centimeters of all fabrics in their most relaxed state - also known as the "boil-off test".

[0031] The table below shows the results obtained

[0032]

[0033] From this data it can be seen that the fabric with lastol is wider and lighter (low density) both in the green state and after scouring (ie the fabric with lastol is more dimensionally sta...

Embodiment

[0042] Example #3 #2 #1

[0043] Length -1% -1% -1%

[0044] Width 0% -2% 0%

[0045] These figures demonstrate that the stretch fabrics of the present invention do not require conventional heat setting of their elastic content to provide transverse and longitudinal dimensional stability values ​​superior to those conventionally required by the industry for low shrinkage (i.e., high dimensional stability) elastic braids (5%).

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Abstract

The present disclosure is directed to dimensionally stable stretch or elastic textile articles characterized in that the article has not been subjected to temperatures greater than l6O DEG C. The disclosure is also directed to a method to make dimensionally stable stretch articles characterized by the absence of a traditional heat-setting step.

Description

technical field [0001] The present invention relates to stretch fabrics having improved heat setting properties. In one aspect, the present invention relates to a stretch fabric comprising synthetic fibers, wherein the synthetic fibers comprise cross-linked heat resistant elastic fibers, and the fabric does not require heat setting, or the fabric can be heated at a temperature below 160°C. stereotyped. Background technique [0002] Fabrics manufactured at least in part from fibers made from elastic synthetic materials are known in the art. These fabrics are also known to lose shape or shrink during wet processing of the fabric or due to consumer use and laundering. [0003] Heat styling is a common method to reduce or prevent dimensional changes. Typically, the heat-setting process involves passing the fabric through a heated zone for a time and temperature such that the morphological memory of the synthetic fibers is reset to the dimensions of the fabric at the start of ...

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 Patents(China)
IPC IPC(8): D06C7/02D03D15/08D04B1/18D03D15/56
CPCD06C7/02D04B1/18Y10T442/413
Inventor F·多塔维亚诺A·洛拉拉米亚
Owner DOW GLOBAL TECH LLC