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Low-temperature water-soluble nonwoven fabric

A non-woven fabric, water-soluble technology, applied in the direction of non-woven fabrics, textiles and papermaking, rayon manufacturing, etc., can solve the problems of use, inability to be used as clothing and industrial fabrics, moisture back and gelatinization, etc.

Inactive Publication Date: 2009-08-19
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such non-woven fabrics will absorb moisture in the air and become gelatinized. They cannot be used as clothing and industrial fabrics, and can only be used as medical or cosmetic dressings.
[0005] We also used thermoplastic water-soluble polyvinyl alcohol raw materials for the inventions "Preparation method of spunbonded water-soluble polyvinyl alcohol nonwoven fabric" and "Preparation method of melt-blown water-soluble polyvinyl alcohol nonwoven fabric" with application numbers 200710043805.4 and 200710043806.9 Water-soluble polyvinyl alcohol was introduced, but the water-soluble thermoplastic polyvinyl alcohol used in this non-woven fabric has not yet been produced in China, so a water-soluble non-woven fabric made of domestically produced non-thermoplastic polyvinyl alcohol was invented.

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

[0023] The specification of low temperature water-soluble nonwoven fabric is 55 g / M 2

[0024] The ratio of polyvinyl alcohol: flow promoter: solubilizer is 97:2:1;

[0025] The specifications of polyvinyl alcohol are: polymerization degree 500, alcoholysis 88%;

[0026] The flow enhancer is OP-10;

[0027] Solubilizer is urea;

[0028] Dissolve completely in water at 10°C.

Embodiment 2

[0030] The specification of low temperature water-soluble nonwoven fabric is 60 g / M 2

[0031] The ratio of polyvinyl alcohol: flow promoter: solubilizer is 90:5:5;

[0032] The specifications of polyvinyl alcohol are: polymerization degree 1700, alcoholysis 88%;

[0033] The flow promoter is MOA-8;

[0034] Solubilizer is polyvinylpyrrolidone;

[0035] Dissolve completely in water at 20°C.

Embodiment 3

[0037] The specification of low temperature water-soluble nonwoven fabric is 30 g / M 2

[0038] The ratio of polyvinyl alcohol: flow promoter: solubilizer is 99.5:0.5:0;

[0039] The specifications of polyvinyl alcohol are: polymerization degree 1700, alcoholysis 92%;

[0040] The flow promoter is OP-20;

[0041] Dissolve completely in water at 30°C.

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Abstract

The invention relates to a low-temperature water-soluble non-woven fabric, which has ingredients comprising: polyvinyl alcohol, a flow promoter and a solubilizing agent with a weight ratio of 90-99.5:0.5-5:0.5. The low-temperature water-soluble non-woven fabric is manufactured by jetting polyvinyl alcohol solution to form net directly, is free from gelatinization due to moisture absorption in the air, is dissolved in the water at any temperature above 0 DEG C, and can be applied to the manufacturing field of disposable industrial base materials and disposable civil articles.

Description

technical field [0001] The invention belongs to the field of preparation of water-soluble non-woven fabrics, in particular to a low-temperature water-soluble non-woven fabric. Background technique [0002] Water-soluble polyvinyl alcohol non-woven fabric has the characteristic of dissolving in water. Polyvinyl alcohol in polyvinyl alcohol aqueous solution can be degraded by biochemical methods. For disposable non-woven fabrics, it is a green and environmentally friendly fabric. At present, the water-soluble temperature of water-soluble polyvinyl alcohol nonwovens on the market is above 75°C, and it is difficult to dissolve in water below 75°C. This product has been used in some hospitals to make disposable items such as surgical gowns, patient gowns, and bed sheets. This kind of clothing can be dissolved in hot water after use, and then the bacteria will be killed by microorganisms in the biochemical pool, the polyvinyl alcohol will be degraded, and the waste water will be ...

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): D04H3/16D01F6/50D01F1/10
Inventor 靳向煜章倩吴海波殷保璞李国星钟磊章悦庭
Owner DONGHUA UNIV