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Method for preventing color difference during short-liquor cotton knitwear-whitening heather grey immersion

A technology of bath ratio cotton and knitwear, applied in dyeing method, textile and papermaking, etc., can solve the problems of white and yellow on the left and right sides of the head and tail, rising production costs, affecting the customer's reputation of the dyeing factory, etc., to prevent easy oxidation. The effect of discoloration and tight packaging sealing

Active Publication Date: 2017-10-20
ZHEJIANG YINHE PRINTING & DYEING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When receiving small batch orders, in order to improve the utilization rate of the dyeing vat equipment, similar heathen gray fabrics are put into the vat together, sometimes causing light jumping color difference in the heathen gray fabrics
In the actual production of gray fabrics with a low bath ratio of 1:4, it was found that whitened hemp gray gray fabrics often had white and yellow color differences at the head and tail, and quality problems such as phenol yellowing that did not reach level 4, resulting in repeated repairs or even Scrapping will not only increase energy consumption, increase production costs, but also delay delivery, affecting customers' reputation for dyeing factories
Therefore, hemp gray gray cloth cannot use a unified water falling operation method in the low bath ratio

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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  • Method for preventing color difference during short-liquor cotton knitwear-whitening heather grey immersion
  • Method for preventing color difference during short-liquor cotton knitwear-whitening heather grey immersion

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A method for preventing color difference caused by whitening hemp ash falling into water of small bath ratio cotton knitwear, comprising the following steps:

[0030] 1) Pre-inspection of gray fabrics: whitening gray gray fabrics for incoming materials processing, some can be seen visually whether the gray gray fabrics are whitened, and some need to cut a piece of gray gray fabrics with a size of 10cm and put them under the purple light in the light box, if there is no whitening The surface of the hemp gray gray cloth is yellow and dark, but if the surface of the hemp gray gray cloth is obviously shiny, it is bleached hemp ash, and the specified color number is added to distinguish it when the cylinder is assembled;

[0031] 2) Then pour water into the tank, the bath ratio is 1:4, heat up to 40°C, add DSA-112C low-temperature degreasing agent (Guangdong Demei) 0.8% for 8 minutes, and raise the rate of 2°C per minute to 60°C for 30 minutes minutes; then wash with water f...

Embodiment 2

[0041] A method for preventing color difference caused by whitening hemp ash falling into water of small bath ratio cotton knitwear, comprising the following steps:

[0042] 1) Pre-inspection of gray fabrics: whitening gray gray fabrics for incoming materials processing, some can be seen visually whether the gray gray fabrics are whitened, and some need to cut a piece of gray gray fabrics with a size of 10cm and put them under the purple light in the light box, if there is no whitening The surface of the hemp gray gray cloth is yellow and dark, but if the surface of the hemp gray gray cloth is obviously shiny, it is bleached hemp ash, and the specified color number is added to distinguish it when the cylinder is assembled;

[0043] 2) Then pour water into the tank, bath ratio 1:4, heat up to 40°C, add DSA-112C low-temperature degreasing agent (Guangdong Demei) 1% for 8 minutes, and raise the rate of 2°C per minute to 60°C for 40 minutes minutes; then wash with water for 10 min...

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 cotton knitwear immersion method, and in particular to an operating method for preventing color difference during short-liquor cotton knitwear-whitening heather grey immersion. The method includes the following technical steps: (1) pre-inspection of greige cloth; (2) immersion; (3) glacial acetic acid treatment; (4) addition of softener; (5) slitting and drying; (6) final product shaping; (7) packaging. The invention changes the conventional operating technique of heather grey immersion, the pre-inspection of greige cloth is chosen to judge whether thee heather grey immersed greige cloth is whitened or not, moreover, the technical temperature of the whole production process is controlled, the step of neutralizing color difference by glacial acetic acid is added, the packaging method is then improved for substitution, and thereby the technical problem in the prior art that color difference and color change are often caused during heather grey immersion for whitening can be solved.

Description

technical field [0001] The invention relates to a method for cotton knitwear falling into water, in particular to a method for preventing color difference caused by whitening hemp ash falling into water for cotton knitwear with small bath ratio. Background technique [0002] Cotton knitted greige is as suitable for all ages as black and white. It is a classic color and occupies a certain proportion in almost every order of incoming material processing. Hemp gray cotton knitted fabric is woven from dyed yarn blended with colored fiber raw materials. It has already shown a natural, uniform, mild and hazy color, so it no longer needs dyeing and processing. The oil stains from the time, and then finalize the quality indicators such as the width, weight, shrinkage and other quality indicators of the hemp gray gray cloth to meet the customer's requirements. The conventional color is called hemp ash falling into the water. [0003] The conventional operation method is to run in ho...

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): D06P1/96D06P3/60D06P1/653D06P5/02
CPCD06P1/6533D06P1/96D06P3/60D06P5/02
Inventor 陈和萍叶苗东叶巧玲王银康
Owner ZHEJIANG YINHE PRINTING & DYEING
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