Pure cotton fabric bleaching process

A technology of pure cotton fabrics and processes, applied in bleached products, plant fibers, textiles and papermaking, etc., can solve the problems of yellowing, cannot ensure the yellowing of fabrics, etc., and achieve the effect of avoiding yellowing

Inactive Publication Date: 2008-09-17
JIANGSU HUAJIA SILK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 4. Yellowing caused by metal ions
Although it can also meet the required whiteness requirements of the

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 Construction

[0043] The following is a specific implementation example of the present invention.

[0044] The fabric comes from a textile factory specializing in the production of pure cotton woven products. The fabric specification is ordinary plain weave with a width of 1200mm. The specific bleaching formula and technological process of the fabric are as follows:

[0045] 1. Bleaching formula

[0046] Scouring agent 1g / L

[0047] Stabilizer 1g / L

[0048] Caustic soda 2g / L

[0049] Hydrogen peroxide 20-35% concentration 10g / L

[0050] Chelating dispersant 1g / L

[0051] Brightener 0.1%

[0052] 2. Processing conditions

[0053] Bath ratio 1:10

[0054] Temperature 40±5℃

[0055] Time heat preservation 60min

[0056] 3. Wash with hot water

[0057] Wash in hot water (85°C) for 25 minutes

[0058] 4. Too acidic

[0059] Acetic acid 1g / L

[0060] Bath ratio 1:12

[0061] Temperature 35°C

[0062] Time 20min

[0063] 5. Deoxygenation

[0064] Deoxygenase 0.1%

[0065] Bath r...

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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PUM

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Abstract

The invention discloses a bleaching process for the pure cotton fabric, which is characterized in including the flow of scouring and bleaching, hot water rinsing, peracid, oxygenating, and washing. The invention specifically includes: (1) choosing a metallic ion chelating agent SS-201 with strong ability in chelating iron ion; (2) in the peracid stage, using neutralization acid with strictly controlled time and temperature for the neutralization acid; (3) ensuring full time for oxygenating, and choosing the deoxygenase dosage according to the practical situation of a fabric; (4) when carrying out softening treatment on the fabric, choosing an anionic softener instead of cation, weak cation or common silicone oil to carry out softening treatment on the fabric, and adding moderate fixed acid to control the pH value of the fabric surface within the range of 5.0-5.5. The bleaching process efficiently solves the yellowing of the pure cotton fabric, the product has stable quality, and the processing cost is reasonable.

Description

technical field [0001] The invention relates to a bleaching process of pure cotton knitted fabric, which belongs to the technical field of textile chemical industry. Background technique [0002] Due to the poor luster of cotton yarn and the denaturation effect of cotton, pure cotton fabrics generally need to be bleached to make them have better luster. However, after the finished bleached fabric is placed for a period of time, various yellowing phenomena (commonly known as macula) often appear. The appearance of these maculas in the finished product is irregular and varies in size and shape. After observation and testing, the reasons for the yellowing of pure cotton fabrics are as follows: [0003] 1. Yellowing of the fiber itself. Because the cotton fiber itself is affected by external factors, such as changes in ultraviolet rays, oxygen in the air, and temperature, the fiber itself becomes yellow. Because this yellowing process is slow and uniform, it is generally rec...

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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IPC IPC(8): D06L3/02D06M13/188D06M16/00C12S11/00D06M101/06D06L4/12D06L4/13D06L4/40
Inventor 俞金健
Owner JIANGSU HUAJIA SILK
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