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Pre-treatment method of cotton or polyester-cotton blended fabric

A polyester-cotton blended and fabric technology, which is applied in the directions of enzyme/microorganism biochemical treatment, fiber treatment, biochemical fiber treatment, etc., can solve the problems of not meeting the requirements of wettability, difficult to remove impurities, and high COD value, reducing water washing. The number of times, the saving of dye consumption, the effect of improving the depth of dyeing

Active Publication Date: 2016-03-09
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method only dissolves the starch and PVA size without decomposing it. Therefore, the COD value of the desizing wastewater seriously exceeds the standard, which affects the ecological environment; moreover, the pH value of the discharged wastewater is high, and strong alkali and high temperature treatment will also damage fiber; in addition, after alkali desizing, it needs to be washed many times, which consumes a lot of water
[0010] (3) The current alkali scouring process also uses hot alkaline solution to dissolve and remove the natural impurities on the cotton fiber, and also has the same problems as alkali desizing, that is, the COD value of the scouring wastewater is high, the pH value is high, and the water consumption is large. Severe damage to fibers
However, with enzyme scouring, due to the diversity of natural impurities on cotton fibers and the specificity of enzyme action, some impurities on cotton fibers are difficult to remove, and the wettability of cotton or polyester-cotton blended fabrics after scouring is difficult to meet the requirements of subsequent dyeing. Yes, and there is still cotton seed hulls left on the cotton fabric
[0011] (4) After the enzyme is compounded, the cotton fabric is treated, and its wettability (generally expressed by hair effect) is very unsatisfactory, which cannot meet the wettability requirements of subsequent dyeing, printing and finishing.
In particular, there are cotton seed husk residues on the surface of cotton fabric after treatment, which seriously affects the appearance and dyeing quality of the fabric.

Method used

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  • Pre-treatment method of cotton or polyester-cotton blended fabric
  • Pre-treatment method of cotton or polyester-cotton blended fabric
  • Pre-treatment method of cotton or polyester-cotton blended fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: Trametes CGMCCNo.10489 fermentation crude enzyme liquid

[0041] Weigh 200g of peeled potatoes, cut into small pieces, add 1.0L of water and boil for 30min, filter through 4 layers of gauze to remove the potato pieces, make up the filtrate to 1.0L, add 20.0g of glucose, and add 1g of lignosulfonate. After subpackaging, sterilize under high pressure at 121°C for 20 minutes, cool down, perform aseptic operation, insert the bacterial suspension of the trametessp.LEF01 strain that has been cultured on the PDA slant medium for 5 to 6 days, and place it in a constant temperature shaking incubator at 28°C. The culture was shaken for 6 days at a rotation speed of 150 rpm. After the fermentation was completed, the fermentation broth was centrifuged at 4000 rpm for 30 minutes, and the obtained supernatant was crude enzyme liquid.

[0042] In the obtained crude enzyme liquid, the activity of laccase was 4100.8U / L, the activity of cellulase was 2310U / L, the activity o...

Embodiment 2

[0043] Embodiment 2: mixed flora produces crude enzyme liquid

[0044] Cultivate the mixed flora on the broth medium to prepare the seed liquid, and then inoculate it in the broth medium containing 4-6g / L 1,3-butanediol, in the induction of 1,3-butanediol Fermented at 30°C for 3 days to produce enzyme, then collected the cells, broken the wall, and centrifuged to get the supernatant to measure the enzyme activity.

[0045] The broth medium contains 10.0-15.0 g / L of peptone, 3.0-5.0 g / L of beef powder, 5.0-6.0 g / L of sodium chloride, 4-6 g / L of 1,3-butanediol, and pH7. 2±0.2.

[0046] The results showed that the activity of PVA degrading enzyme in the crude enzyme liquid could reach 1.985U / mL.

Embodiment 3

[0047] Example 3: Pre-treatment of fabrics in cold pile method based on compound enzyme solution

[0048] (1) cold pile method:

[0049] ① Fabric: T / C(65 / 35)94cm13×13523.5×283

[0050] ②Technical process: gray cloth → padding compound enzyme solution (padding temperature 30°C-50°C, liquid retention rate 80%-100%) → stacking (30°C-50°C stacking 4-6h) → 80°C-95 ℃ hot water washing→hydrogen peroxide bleaching (90℃-95℃ stacking for 30-45min)→water washing.

[0051] ③Compound enzyme solution formula:

[0052] Trametes fermented crude enzyme liquid 2.5g / L

[0053] Mixed strain fermented crude enzyme liquid 40g / L

[0054] Amylase 2.5g / L

[0055] Non-ionic wetting agent 5g / L

[0056] pH 7

[0057] ④Oxygen bleaching formula

[0058] Sodium silicate 1.5g / L

[0059] Hydrogen peroxide (27.5%) 12g / L

[0060] Stabilizer 1.5g / L

[0061] Sodium hydroxide (30%) 5mL / L

[0062] Chelating dispersant 1mL / L

[0063] Scouring agent 2g / L

[0064] pH 10

[0065] ⑤ The treatment effect i...

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Abstract

The present invention discloses a pre-treatment method of a cotton or polyester-cotton blended fabric, and belongs to the technical field of textile. According to the present invention, a Trametes CGMCC No.10489 fermentation crude enzyme solution contains laccase, cellulase, hemicellulase, pectinase and other composite enzyme systems, a hybrid strain production crude enzyme solution contains PVA oxidase (secondary alcohol oxidase), PVA hydrolase (beta-diketone hydrolase) and other synergetic PVA degrading enzyme systems, the two crude enzyme solutions are combined, and amylase capable of degrading starch is compounded, such that the one-bath one-step removal of the cotton on the cotton and the polyester-cotton blended fabric, the starch and the PVA slurry on the polyester-cotton warp yarn, and the natural impurity on the cotton fibers is achieved; and the desizing rate and the capillary effect of the starch and the PVA slurry of the cotton and the polyester-cotton blended fabric pre-treated by the enzyme liquid achieve the traditional alkali pre-treatment effects, no cottonseed hulls exists on the fabric surface, and the subsequent dyeing and printing requirement can be completely met.

Description

technical field [0001] The invention relates to a pretreatment method for cotton or polyester-cotton blended fabrics, belonging to the technical field of textiles. Background technique [0002] In order to weave cotton and polyester-cotton blended fabrics smoothly, it is necessary to sizing the warp yarns of cotton and polyester-cotton blended fabrics to improve the wear resistance and strength of the warp yarns and to fit the hairiness. The sizing material used is called size. The current sizing materials are mainly starch and PVA, and the sizing amount is generally 8%-12% of the warp yarn mass, of which starch accounts for 70%-100%, and PVA accounts for 0%-30%, depending on the variety. After the weaving is completed, the applied size needs to be removed, otherwise it will affect the appearance and feel of the fabric and the subsequent dyeing, printing, finishing and other processes. This process is generally called desizing. [0003] The pretreatment of cotton and polye...

Claims

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Application Information

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IPC IPC(8): D06M16/00D06L3/02D06M101/06D06L4/13
CPCD06M16/003D06M2101/06D06M2200/50
Inventor 王强范雪荣张颖王平袁久刚余圆圆崔莉
Owner JIANGNAN UNIV
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