Light bleaching method of composite non-woven fabric

A non-woven, light-bleaching technology, applied in textiles, papermaking, dry-cleaning fiber products, etc., can solve the problems of uneven distribution of hydrophilic and water-repellent, dirty composite non-woven fabrics, large labor and material resources, etc. To the extent of reducing oxidation and other ineffective decomposition, retaining soft feel, and reducing energy consumption

Pending Publication Date: 2020-10-20
SHENZHEN PURCOTTON TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] If the composite non-woven fabric has not undergone any treatment, the surface of the composite non-woven fabric prepared will be dirty, have defects, and the distribution of defects will be uneven, and a lot of manpower and material resources will be spent on the subsequent inspection of the fabric to pick out the defects.
Moreover, the performance stability is not good, which will lead to uneven distribution of hydrophilic and water repellent
[0004] Based on 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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  • Light bleaching method of composite non-woven fabric
  • Light bleaching method of composite non-woven fabric
  • Light bleaching method of composite non-woven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The light bleaching treatment method of the composite non-woven fabric comprises:

[0051] Step S1, pre-preparation: Both the hydrophilic cotton spunlace non-woven fabric and the water-repellent cotton spunlace non-woven fabric are unwound, and the hydrophilic cotton spunlace non-woven fabric and the water-repellent cotton spunlace non-woven fabric Cotton spunlace non-woven fabrics are combined with high-pressure spunlace to obtain composite non-woven fabrics.

[0052] Step S2, the bleaching step: adding bleaching liquid into the bleaching pot, soaking the composite non-woven fabric in the bleaching liquid for bleaching, the bleaching liquid includes demineralized water, liquid caustic soda and hydrogen peroxide, the concentration of hydrogen peroxide is 17.5%, liquid caustic soda The concentration is 25%, the cooking and bleaching temperature is 80°C, and the cooking and bleaching step time is 45s. 3% refining agent, 8% oxygen bleaching stabilizer and 3% oxygen bleach...

Embodiment 1

[0056] Step S1, pre-preparation: Both the hydrophilic cotton spunlace non-woven fabric and the water-repellent cotton spunlace non-woven fabric are unwound, and the hydrophilic cotton spunlace non-woven fabric and the water-repellent cotton spunlace non-woven fabric Cotton spunlace non-woven fabrics are combined with high-pressure spunlace to obtain composite non-woven fabrics.

[0057] Step S2, bleaching step: add bleaching solution to the bleaching pot, soak the composite non-woven fabric in the bleaching solution for bleaching, the bleaching solution includes demineralized water, liquid caustic soda and hydrogen peroxide, the concentration of hydrogen peroxide is 30%, the concentration of liquid caustic is 25%, The boiling and bleaching temperature is 100°C, and the cooking and bleaching step time is 30 minutes.

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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Abstract

The invention discloses a light bleaching method of a composite non-woven fabric. The light bleaching method of the composite non-woven fabric comprises the steps of boiling and bleaching, specifically, boiling and bleaching liquid is added into a bleaching pot, the composite non-woven fabric is soaked in the boiling and bleaching liquid to be boiled and bleached, the boiling and bleaching liquidcomprises softened water, liquid caustic soda and hydrogen peroxide, the concentration of the hydrogen peroxide is 12.5%-25%, the boiling and bleaching temperature is 75 DEG C-85 DEG C, and the boiling and bleaching time is 10 s-60 s. Due to the fact that the concentration and the treatment time of the hydrogen peroxide are reduced, the bleaching effect on the composite non-woven fabric is achieved, damage to fibers of the composite non-woven fabric is reduced, the soft hand feeling of fibers is reserved, meanwhile, the skin-friendly hydrophilicity of the whole composite non-woven fabric is improved, and multiple purposes are achieved at a time; the boiling and bleaching temperature is lower, the damage to non-woven fabric fibers is reduced, and the invalid decomposition of the hydrogen peroxide can be weakened; and compared with a conventional bleaching method, the light bleaching method of the composite non-woven fabric has the advantages that the treatment time is shorter, the boiling and bleaching temperature is lower, the efficiency is improved, and meanwhile, the energy consumption can be reduced.

Description

technical field [0001] The invention relates to the technical field of nonwovens, in particular to a light bleaching method for composite nonwovens. Background technique [0002] After the composite non-woven fabric, due to the high-pressure hydroentanglement, the high-pressure hydroentanglement flow will take away some impurities in the cotton material, and the water cycle is reused. The circulating water contains cotton seeds and fiber seed scraps carried by the cotton fiber itself. and other impurities. [0003] If the composite non-woven fabric has not undergone any treatment, the surface of the prepared composite non-woven fabric will be dirty, have defects, and the distribution of defects will be uneven, and a lot of manpower and material resources will be spent on the subsequent inspection of the fabric to pick out the defects. Moreover, the performance stability is not good, which will lead to uneven distribution of hydrophilicity and water repellency. [0004] Bas...

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): D06L4/13D06L4/12D06L1/12D06L1/16
CPCD06L4/13D06L4/12D06L1/12D06L1/16
Inventor 李建全陈泽澜薛明献陈辉杨鑫权
Owner SHENZHEN PURCOTTON TECH
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