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Cold-batch degreasing and bleaching method for pure cotton spunlace non-woven fabric

A technology of spunlace non-woven fabrics and cold stacking, which is applied in the field of bleaching, can solve the problems of long cold stacking time and high bath ratio, and achieve the effects of less consumption, reduced COD value, and lower pressure

Active Publication Date: 2021-10-22
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the patent with the application number CN201710519377.1 discloses a biological enzyme pretreatment process for gray cloth. After the preparation of compound enzyme solution, padding, cold stacking, oxygen bleaching, steaming and water washing and drying steps, the biological enzyme pretreatment of gray cloth is completed. Treatment process; there is a high bath ratio, a long cold stack time, oxygen bleaching and steaming are required, and water washing and drying are required after cold stacking

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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  • Cold-batch degreasing and bleaching method for pure cotton spunlace non-woven fabric
  • Cold-batch degreasing and bleaching method for pure cotton spunlace non-woven fabric
  • Cold-batch degreasing and bleaching method for pure cotton spunlace non-woven fabric

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] see figure 2 , embodiment 1 provides a kind of preparation method of non-woven fabric, this method comprises:

[0050] S101 Opening and carding to form a web: Opening and carding to form a web according to the conventional process of non-woven fabrics.

[0051] S102 Primary cold pile: conduct a primary cold pile on the cotton net after cleaning, the conditions of the primary cold pile are: room temperature, time 4h, liquor ratio 1:6. Wherein, the primary cold pile liquid comprises the first composite biological enzyme agent and Pingpingjia, the concentration of the first composite biological enzyme agent is 5g / L, and the concentration of Pingpingjia is 2g / L, and the first composite biological enzyme agent is composed of pectinase, Cellulase, protease and lipase are composed in a mass ratio of 1.6:3:1.5:1.

[0052] S103 Secondary cold pile: The cotton net after primary cold pile is subjected to secondary cold pile. The conditions of secondary cold pile are: room tempe...

Embodiment 2

[0074] The process of embodiment 2 is basically the same as that of embodiment 1, except that in this embodiment, SCJ-2000 is added to the secondary cooling reactor fluid, and the concentration of SCJ-2000 is 1.5g / L.

Embodiment 3

[0076] see image 3, add compound biological enzyme agent in the first cold pile tank 1, carry out a cold pile; Enzymes (neutral, no need to consider enzyme activity) are mixed to obtain secondary cold reactor liquid, and the secondary cold reactor is carried out. Specifically, the compound biological enzyme agent is added before plate 1 3, TAED, hydrogen peroxide, sodium hydroxide and Pingjia are added between plate 3 5 and plate 4 6, the height of the top of plate 2 4 > the height of the top of plate 4 6 > plate The height of the top of board 3 5 > the height of the top of board 1 3 .

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Abstract

The invention discloses a cold-batch degreasing and bleaching method for pure cotton spunlace non-woven fabric, and belongs to the technical field of bleaching. The method comprises the following steps of (1) primary cold batching: carrying out primary cold batching on a cotton web subjected to impurity removal; (2) secondary cold batch: carrying out secondary cold batch on the cotton web subjected to the primary cold batch; and (3) washing: washing the cotton web subjected to secondary cold batch, and then carrying out a spunlace process, wherein the primary cold-batch liquid comprises a first composite bio-enzyme agent and a first auxiliary agent; the pH value of the secondary cold-batch liquid is 7-8; the secondary cold-batch liquid comprises a low-temperature refining agent, a second composite bio-enzyme agent, hydrogen peroxide, sodium hydroxide and a second auxiliary agent; and the first composite bio-enzyme agent and the second composite bio-enzyme agent both comprise pectinase, cellulase, proteinase and lipase. The method has better impurity removal, degreasing and bleaching effects; the whiteness of the non-woven fabric treated by the method can reach 80 or above; the water absorption capacity is 12-14g according to the patent; and the weight loss rate is greater than 6%.

Description

technical field [0001] The invention belongs to the technical field of bleaching, and in particular relates to a method for cold stacking debleaching of pure cotton spunlace non-woven fabrics. Background technique [0002] The cold stacking process is mainly used in the treatment of textiles, and less applied to the treatment of non-woven materials. The existing pure cotton cold-stack degreasing bleached spunlace non-woven fabric production process, such as CN107326533 A discloses a raw cotton cold-stack degreasing spunlace non-woven fabric production process, the raw cotton is directly cold-stacked and degreased, and the degreased cotton is used for drying. In-line production with pure cotton spunlace line. There still exists the defect that the cold-stack degreasing effect of raw cotton is not obvious, and the cold-stack degreasing time is long (16-22 hours). And the amount of chemical reagents is high (the mass percentage of NaOH and H2O2 in the degreasing solution is n...

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): D06L4/75D06L4/40D06L4/13D06L4/12
CPCD06L4/75D06L4/40D06L4/13D06L4/12
Inventor 张如全孙婷胡敏唐子杰张明涂虎
Owner WUHAN TEXTILE UNIV
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