Preparation method of single-sided water-repellent spunlace pure cotton non-woven fabric

A non-woven fabric and pure cotton technology, which is applied in the field of preparation of spunlace pure cotton non-woven fabrics, can solve the problems of decreased air permeability of the material, the pure cotton surface layer is not particularly extensive, and is not suitable for low areal density fabrics, etc. Effects of hydrophobicity and stability

Pending Publication Date: 2020-06-12
湖北欣柔卫生用品股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the application of pure cotton surface layer of sanitary products in the market is not particularly extensive, and at present, the surface layer of pure cotton sanitary products mostly adopts the process of double-sided impregnation, which will lead to the effect of water repellency on both sides, causing urine to keep dripping on the surface layer. Do not go, it is easy to cause skin diseases such as eczema
[0003] At present, there are some studies on one-sided water repellency of pure cotton materials, such as applying silicone-based water-repellent finishing liquid on the surface of fabrics by dipping to obtain super-hydrophobic fabrics. To a certain extent, one-sided water-repellent fabrics can be obtained , but not suitable for low surface density fabrics, it is easy to appear water repellent on both sides
Or use a scraper coater to apply the water-repellent foam finishing solution on the surface of the cotton fabric to obtain a single-sided superhydrophobic fabric. This method can achieve one-sided water repellency of the material, but the air permeability of the material has dropped significantly.
None of the finishing methods can achieve the effect of water repellency on one side of low surface density pure cotton materials without changing the basic properties of the materials

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] 0.3g of polydimethylsiloxane (PDMS) was subjected to air plasma pretreatment, and then the PDMS after plasma treatment was dispersed in 100mL of deionized water, the stirring temperature was 25°C, and the stirring speed was 600r / min, and then At a temperature of 30°C, ultrasonically treat for 60 minutes to obtain an evenly dispersed oil-in-water emulsion finishing agent containing 0.3% PDMS; The particle size of the atomized microbeads is 10 μm; then the spunlace pure cotton nonwoven fabric is placed 8 cm above the atomized sheet to keep the atomized microbeads of the oil-in-water emulsion finishing agent containing PDMS uniform and continuous Spray on the lower surface of the non-woven fabric, the atomization time is 20s, take out the treated non-woven fabric, and immediately put it in an environment of 150°C and bake it for 10 minutes to obtain a single-sided water-repellent spunlaced pure cotton non-woven fabric.

Embodiment 2

[0022] 0.5g polydimethylsiloxane (PDMS) was subjected to air plasma pretreatment, then the PDMS after plasma treatment was dispersed in 100mL deionized water, the stirring temperature was 27°C, and the stirring speed was 800r / min, and then Ultrasonic treatment at 40°C for 60 minutes to obtain a uniformly dispersed oil-in-water emulsion finishing agent containing 0.5% PDMS; place an ultrasonic atomizer in the oil-in-water emulsion finishing agent containing 0.5% PDMS for ultrasonic atomization to obtain The particle size of the atomized microbeads is 15 μm; then the spunlace pure cotton non-woven fabric is placed 9 cm above the atomized sheet, and the atomized microbeads of the oil-in-water emulsion finishing agent containing PDMS are sprayed evenly and continuously on the For the lower surface of the nonwoven fabric, the atomization time is 20s. The treated nonwoven fabric is taken out and baked at 120°C for 20 minutes to obtain a single-sided water-repellent spunlace pure cott...

Embodiment 3

[0024] 0.6g of polydimethylsiloxane (PDMS) was subjected to air plasma pretreatment, and then the PDMS after plasma treatment was dispersed in 100mL of deionized water, the stirring temperature was 27°C, and the stirring speed was 900r / min, and then Ultrasonic treatment at 30°C for 60 minutes to obtain a uniformly dispersed oil-in-water emulsion finishing agent containing 0.6% PDMS; place an ultrasonic atomizer in the oil-in-water emulsion finishing agent containing 0.6% PDMS for ultrasonic atomization to obtain The particle size of the atomized microbeads is 14 μm; then the spunlace pure cotton non-woven fabric is placed 9 cm above the atomized sheet, and the atomized microbeads of the oil-in-water emulsion finishing agent containing PDMS are sprayed evenly and continuously on the For the lower surface of the nonwoven fabric, the atomization time is 10s. The treated nonwoven fabric is taken out and baked at 150°C for 10 minutes to obtain a single-sided water-repellent spunlace...

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 provides a preparation method of a single-sided water-repellent spunlace pure cotton non-woven fabric. Oil-in-water emulsion containing polydimethylsiloxane is used as finishing liquid,and the finishing liquid is atomized and uniformly and continuously sprayed on one side of the non-woven fabric which is placed flat above an atomizing piece through an ultrasonic atomization technology; and after maintaining the atomization time for 10 to 20s, the processed non-woven fabric is placed in an environment of 120 to 150 DEG C for 10 to 20 minutes to obtain the single-sided water-repellent spunlace pure cotton non-woven fabric. The preparation method does not use any organic solvent, and is a non-toxic, harmless, pollution-free, environmentally friendly, convenient and fast processing method; the oil-in-water emulsion containing the PDMS is used as the finishing liquid, atomized micro-beads are uniformly sprayed on a treated side of the spunlace pure cotton non-woven fabric through an ultrasonic atomization device, and PDMS molecules are bound on the surface of a cotton fiber with strong binding force, so that the spunlace pure cotton non-woven fabric has good hydrophobicity and stability; and the preparation method can be widely used in medical protective clothing, wound accessories and diaper coating layer and other medical and civil hygiene material fields.

Description

technical field [0001] The invention provides a method for preparing a spunlace pure cotton nonwoven fabric, specifically a method for preparing a water-repellent spunlace pure cotton nonwoven fabric on one side, which endows the nonwoven fabric with different properties on both sides, and belongs to the field of textile technology . Background technique [0002] Pure cotton spunlace nonwovens have been widely used in daily life due to their unique comfort, hydrophilicity and conformability. At present, the application of pure cotton surface layer of sanitary products in the market is not particularly extensive, and at present, the surface layer of pure cotton sanitary products mostly adopts the process of double-sided impregnation, which will lead to the effect of water repellency on both sides, causing urine to keep dripping on the surface layer. Do not go, easy to cause eczema and other skin diseases. [0003] At present, there are some studies on one-sided water repell...

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): D06M15/643D06M23/00D06B1/02B05B17/06D06M101/06
CPCD06M15/643D06M23/00D06B1/02B05B17/06D06M2101/06D06M2200/12
Inventor 江雷郭增佩
Owner 湖北欣柔卫生用品股份有限公司
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