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Method for testing hot shrinkage rate of knitted fabric

A knitted fabric and testing method technology, which is applied in the inspection of textile materials, textiles and papermaking, etc., can solve the problems of testing the shrinkage rate of knitted fabrics, etc., and achieve the effects of small error, simple testing method, and accurate and reliable testing results

Inactive Publication Date: 2014-03-26
SHANGHAI CHALLENGE TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the national standard, the test method for the shrinkage rate of knitted fabrics has not been formulated, and there is no unified standard to test the shrinkage rate of knitted fabrics

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 1

[0027] Sample: 75D / 72F light mesh DTY pigskin cloth. The specific steps of steam shrinkage test are as follows:

[0028] (1) Put the sample in a standard atmosphere with a temperature of 20±2°C and a relative humidity of 65±2% for more than 24 hours, and cut 3 flat and wrinkle-free samples along the diagonal direction at least 10cm away from the edge of the cloth , the size of each sample is 500mm×500mm, use the model to make 3 pairs of marks in the horizontal and vertical directions, and the distance between the two ends of each pair of marks is 350mm.

[0029] (2) Spread the sample flat on the ironing table. Open the valve of the steam iron and the suction of the ironing table, discharge the steam for 5 minutes first, set the parameters of the steam ironing machine as follows: temperature 140°C, steam pressure 200kpa, suction pressure of the ironing table ≤ -150pa.

[0030] (3) Use a steam iron to stick to the sample vertically and horizontally but cannot touch the sample ...

Embodiment 2

[0037] Sample: 70D / 34F / 1Z twisted nylon 66 single jersey.

[0038] (1) Put the sample in a standard atmosphere with a temperature of 20±2°C and a relative humidity of 65±2% for more than 24 hours, and cut 3 flat and wrinkle-free samples along the diagonal direction at least 10cm away from the edge of the cloth , the size of each sample is 500mm×500mm, use the model to make 3 pairs of marks in the horizontal and vertical directions, and the distance between the two ends of each pair of marks is 350mm.

[0039] (2) Spread the sample flat on the ironing table. Open the valve of the steam iron and the suction of the ironing table, discharge the steam for 5 minutes first, set the parameters of the steam ironing machine as follows: temperature 140°C, steam pressure 200kpa, suction pressure of the ironing table ≤ -150pa.

[0040] (3) Use a steam iron to iron the sample back and forth 3 times along the vertical and horizontal directions, the steam iron is 1cm away from the cloth surf...

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

The invention relates to a method for testing the hot shrinkage rate of knitted fabric. The method for testing the hot shrinkage rate of the knitted fabric comprises the steps that (1) 3 pieces of flat and non-plicated samples are cut from the knitted fabric to be tested, 3 pairs of marks are made transversely and longitudinally on each sample; (2) the samples processed through the step (1) are laid on an ironing platform and are ironed respectively 3 times in the longitudinal and transverse directions through a steam iron, and induced draft ironing is carried out; (3) the operation step (2) is repeated two times, and the three ironed samples are obtained; (4) the three ironed samples are unfolded and dried at room temperature, and the distance between the two ends of each pair of marks in the transverse and longitudinal directions of each sample is measured after balance; the hot shrinkage rates of the three samples are calculated respectively, and the average value is obtained. The method for testing the hot shrinkage rate of the knitted fabric is easy and convenient to carry out, free of special equipment requirements, is accurate and reliable in the test result, small in error, and capable of being repeatedly implemented.

Description

technical field [0001] The invention belongs to the field of fabric quality detection methods, in particular to a method for testing the shrinkage rate of knitted fabrics. Background technique [0002] In the quality inspection of fabrics and garments, shrinkage is a very important parameter. Unqualified shrinkage will directly lead to unstable dimensions of fabrics and garments, which means that their shapes are unstable and their quality is unqualified. During the production and processing of fabrics and clothing, their horizontal and vertical directions will be stretched to a certain extent and will be in a tight state, and there will be certain internal stress. When fabrics and clothing are stimulated by external factors such as water and heat, the internal stress between fibers disappears, and their horizontal and vertical stretches will occur, and the degree of stretching is the shrinkage rate. Shrinkage includes washing shrinkage and ironing shrinkage, and ironing sh...

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): D06H3/10
Inventor 陈小湘王俊丽柯华杨秀芳朱金刚
Owner SHANGHAI CHALLENGE TEXTILE
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