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Elastic polyester-cotton fabric dyeing and finishing pretreatment method

A technology of polyester-cotton fabrics and fabrics, applied in the field of pre-dyeing and finishing of elastic polyester-cotton fabrics, can solve problems affecting the quality of fabric scouring and bleaching or dyeing depth, reducing the color fastness of elastic fabrics, and damage to polyether-type spandex, etc., to achieve Dimensional stability, increased whiteness, and improved hydrophilicity

Inactive Publication Date: 2014-05-28
吴江市桃源海润印染有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oxidation resistance of spandex varies with different oxidants, and it has good stability to oxygen-containing bleaching agents. It is mostly bleached in dilute peroxide solutions, and spandex fabrics can also be bleached with reducing agents; but less chlorine-containing bleaching is used. Bleaching agent (such as sodium hypochlorite) for chemical bleaching, this is because the fiber will form nitrogen-chlorine combination in the hypochlorite solution to make the fiber yellow, and the damage of polyether spandex is more serious
In addition, different types of surfactants are also adsorbed on spandex fiber components, which will not only affect the quality of scouring and bleaching of fabrics or the depth of dyeing, but also reduce the color fastness of elastic 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

specific Embodiment

[0022] Pre-shrinking and presetting are used to pretreat elastic polyester-cotton fabrics, combined with pectinase, laccase and cellulase for biological treatment and oxidative bleaching, and the specific examples of the pre-treatment of elastic polyester-cotton fabrics for dyeing and finishing are as follows:

Embodiment 1

[0023] Implementation 1: The fabric sample selected in this implementation is polyester-cotton elastic satin.

[0024] Sample 1: The traditional alkali-oxygen one-step method is adopted. The treatment process prescription and conditions are as follows: (1) Pre-shrinking and pre-setting: penetrant 0.5g / L, liquid carrying rate 70%, padding temperature 90°C, pre-setting temperature 190°C, time 45s; (2) Alkaline annealing Cooking, bleaching and impregnation treatment: NaOH10g / L, H 2 o 2 (30%) 5g / L, penetrating agent JFC1g / L, oxygen bleaching stabilizer 0.5g / L, bath ratio 1:20, treatment temperature 95 ℃, time 90rmin. After treatment, wash thoroughly with 90°C hot water twice.

[0025] Sample 2: The process mentioned in the present invention is adopted. The treatment process prescription and conditions are as follows: (1) pre-shrinking, pre-setting: penetrant 0.5g / L, liquid carrying rate 70%, padding temperature 90°C, pre-setting temperature 190°C, time 45s; (2) before enzymati...

Embodiment 2

[0027] Implementation 2: The sample selected for this implementation is elastic polyester-cotton plain cloth.

[0028] Sample 3: The traditional alkali-oxygen one-step method is adopted. The treatment process prescription and conditions are as follows: (1) pre-shrinking and pre-setting: penetrating agent 0.5g / L, liquid carrying rate 75%, padding temperature 85°C, pre-setting temperature 180°C, time 60s; (2) alkaline annealing Blanching and soaking treatment: NaOH 10g / L, penetrant JFC 1g / L, temperature 98°C, time 60min, bath ratio 1:20. Finally, fully wash twice with hot water at 90°C.

[0029] Sample 4: The process mentioned in the present invention is adopted. The treatment process prescription and conditions are as follows: (1) pre-shrinking, pre-setting: penetrant 0.5g / L, liquid carrying rate 75%, padding temperature 85°C, pre-setting temperature 180°C, time 60s; (2) before enzymatic method Treatment: amylase 1g / L, pectinase 0.45g / L, cellulase 0.6g / L, temperature 55°C, t...

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Abstract

The invention relates to an elastic polyester-cotton fabric dyeing and finishing pretreatment method and belongs to the field of a textile printing and dyeing technology. The invention aims to raise whiteness and water absorbability of a product and minimize reduction of mechanical properties of fabric. Firstly, hot-water preshrinking and pre-setting treatment are carried out on fabric so as to raise external dimension stability of the elastic fabric; then, dyeing and finishing pretreatment is carried out with amylase, pectase and the like so as to remove most non-fibrous symbiont; and finally, hydrogen peroxide bleaching and deoxygenation treatment are combined to remove a few pigment and impurities in the elastic fabric so as to finish dyeing and finishing pretreatment of the fabric. The method comprises the following technological steps: preshrinking and pre-setting; bio-enzyme (amylase, pectase, laccase and cellulose) treatment; hydrogen peroxide bleaching; and catalase deoxygenation. In comparison with a traditional alkali pretreatment process, the method provided by the invention has advantages as follows: production energy consumption is reduced, and quality of the elastic polyester-cotton fabric is raised.

Description

technical field [0001] The invention relates to a method for pre-dyeing and finishing of elastic polyester-cotton fabrics, in particular, pre-shrinking with hot water and presetting with hot air, followed by enzymatic treatment with amylase, pectinase, laccase and cellulase. The invention discloses oxidative bleaching with hydrogen peroxide, a method for realizing pre-dyeing and finishing processing of elastic polyester-cotton fabrics, and belongs to the technical field of textile printing and dyeing. Background technique [0002] Compared with ordinary polyester-cotton fabrics, elastic polyester-cotton fabrics contain an appropriate amount of spandex filaments. The product has higher elasticity and excellent rebound performance, soft to the touch, comfortable to wear, and can reveal a beautiful figure when taken. Therefore, it is widely used in textile processing. get more and more applications. At present, this type of fabric has been widely used in the textile industry, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M16/00D06L3/02D06M101/06D06M101/32D06L4/12D06L4/13
Inventor 顾志锋董治昌沈震洪王平乔辉
Owner 吴江市桃源海润印染有限公司
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