Pre-treatment of cotton fabrics by rolling and piling up of enzyme

A compound biological enzyme and pre-treatment technology, applied in the pre-treatment field of the dyeing and finishing industry, can solve the problems of intense oxidation, fabric damage, production restrictions, etc., and achieve the effect of reducing COD value, improving fabric quality, and reducing fiber damage.

Inactive Publication Date: 2005-12-28
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic Yongguang Chemical Company launched "scouring enzyme SKD" composed of multiple compound enzymes last year, and Shanghai Textile Research Institute launched "Cotton Cleaner 100". There are also various commercial compound enzyme preparations in Suzhou, Guangdong and other places, but these Most of the products are blended products of biological enzymes and chemicals (especially the mixture of alkali), and must be used as high as 10g / L ~ 15g / L (100% H 2 o 2 ) hydrogen peroxide for oxygen bleaching treatment, its high alkali consumption, intense oxidation, easy to damage the fabric
In addition, although there are many varieties of these compound enzymes, they have not been widely used in production.
The alkaline pectinase introduced by Novozymes is also difficult to adapt to the characteristics of cotton fabrics in my country, and is still under application research.
[0006] Although the bio-enzyme pretreatment of cotton fabrics has been studied for many years, it is still limited to batch processing, which not only does not meet the characteristics of continuous production of cotton woven fabrics, but also makes it difficult to use the existing processing equipment of cotton printing and dyeing factories. severely restricted in 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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: 14.5tex×14.5tex cotton downproof cloth

[0021] Technological process: after desizing, the cotton woven fabric is padded with compound enzyme solution, heat-preserved and piled up, washed with hot water (to kill the enzyme), washed with cold water, bleached with hydrogen peroxide and washed with water.

[0022] Among them, the compound biological enzyme treatment solution consists of: pectinase 14g / L, neutral cellulase 0.25g / L, wetting and penetrating agent 2g / L, pH9.1, padding biological enzyme treatment solution, enzyme treatment solution temperature It is from room temperature to 60°C, the excess rate is 100%, the steaming temperature is 55°C, and the steaming time is 60 minutes. After treatment, raise the temperature to 95-100°C for 5 minutes to inactivate the enzyme, and wash thoroughly with water. Finally, bleach with hydrogen peroxide and rinse with water after bleaching. The bleaching conditions are: 30% hydrogen peroxide 24g / L, sodium silicate 17g / ...

Embodiment 2

[0024] Example 2: 14.5tex×14.5tex cotton downproof cloth

[0025] Technological process: after desizing, the cotton woven fabric is padded with compound enzyme solution, heat-preserved and piled up, washed with hot water (to kill the enzyme), washed with cold water, bleached with hydrogen peroxide and washed with water.

[0026] Among them, the compound biological enzyme treatment solution is composed of: Bacillus subtilis WSHB04-03 alkaline pectin lyase 6g / L, neutral cellulase 1.75g / L, neutral protease 7g / L, wetting and penetrating agent 0g / L L, pH 9.1, padding biological enzyme treatment solution, the temperature of the enzyme treatment solution is from room temperature to 60°C, the excess rate is 100%, the steaming temperature is 55°C, and the steaming time is 60min. After treatment, raise the temperature to 95-100°C for 5 minutes to inactivate the enzyme, and wash thoroughly with water. Finally, bleach with hydrogen peroxide and rinse with water after bleaching. The blea...

Embodiment 3

[0028] Example 3: 14.5tex×14.5tex cotton poplin cloth

[0029] Technological process: after desizing, the cotton woven fabric is padded with compound enzyme solution, heat-preserved and piled up, washed with hot water (to kill the enzyme), washed with cold water, bleached with hydrogen peroxide and washed with water.

[0030] Among them, the compound biological enzyme treatment solution consists of: pectinase 10g / L, neutral cellulase 1.0g / L, xylanase 3.5g / L, wetting and penetrating agent 1g / L, pH9.1, padding Biological enzyme treatment solution, the temperature of the enzyme treatment solution is from room temperature to 60°C, the excess rate is 100%, the steaming temperature is 55°C, and the steaming time is 60 minutes. After treatment, raise the temperature to 95-100°C for 5 minutes to inactivate the enzyme, and wash thoroughly with water. Finally, bleach with hydrogen peroxide and rinse with water after bleaching. The bleaching conditions are: 30% hydrogen peroxide 24g / L,...

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Abstract

The invention provided a fore treatment process of the enzyme rolling pile for the fabric which belongs to the fore treatment process of the dyeing and finishing field. The process is: first to impregnate the fabric into the mixture of the alkali pectinase liquid, neutral proteinase liquid and xylanase liquid, then to keep the temperature, next to wash with the hot water (killing the enzyme) and the cool water last to blanch with the H2O2. The pectinase is produced by the Bacillus subtilis WSHB04-03. The process has many merits such as high efficiency, low work output and the energy conservation and so on.

Description

technical field [0001] The invention relates to a cotton woven fabric composite biological enzyme pad-batch pretreatment process, which belongs to the technical field of pretreatment process in the dyeing and finishing industry. Background technique [0002] The traditional dyeing and finishing process needs to consume a lot of water and chemical substances, which not only consumes resources, but also produces serious pollution. The fundamental way out to solve this problem lies in the development of environment-friendly dyeing and finishing technology. Biotechnology, especially enzyme processing technology, has shown good development prospects in this regard in recent years. [0003] Pectin, wax, protein, ash and other natural impurities in the cuticle and primary cell wall of cotton fiber seriously affect the wettability of cotton fiber, which is unfavorable to the subsequent dyeing, printing, finishing and other processing of cotton fabric. influences. The scouring proc...

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): D06L4/12D06L4/13D06M16/00
Inventor 陈坚王强高卫东范雪荣华兆哲堵国成
Owner JIANGNAN UNIV
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