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Biodegradation multilayer composite material with high moisture penetrability

A multi-layer composite material, biodegradable technology, applied in the field of high moisture permeability textile materials, can solve the problems of water dissolution residue, high processing cost, low production efficiency, etc., to reduce environmental damage, low production cost, and reduced operating costs Effect

Active Publication Date: 2015-07-22
SHIYUAN TECH WUHU NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reflected in the performance of the product, the hot-melt composite method refers to the composite method in which the film and the non-woven fabric are heated at the same time and fused under pressure; however, the thermal decomposition temperature of polyvinyl alcohol is too close to the melting temperature, and it is difficult to obtain good peel strength by this method. Composite products, and even if hot-melt lamination can barely reach a certain value of peel strength, but the production efficiency is low and the processing cost is very high
Glue composite products are not breathable because the ordinary glue currently used will greatly reduce the moisture permeability of the fabric and affect the comfort of wearing. Moreover, ordinary glue is not soluble in water and will form a certain amount of water-soluble residue.
Extrusion compounding is suitable for on-line compounding of polyolefin films, but using polyvinyl alcohol film as a composite material is still immature in terms of melt extrusion technology, and it is still difficult to achieve it with the current technology and process level.

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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  • Biodegradation multilayer composite material with high moisture penetrability
  • Biodegradation multilayer composite material with high moisture penetrability
  • Biodegradation multilayer composite material with high moisture penetrability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 45g / sm water-soluble polyvinyl alcohol spunlace nonwoven fabric and 0.025mm moisture-permeable polyvinyl alcohol frosted film are used for lamination. The frosted surface of the film is outward, and the smooth surface is used as the compound sizing surface.

[0028] The water-soluble adhesive formula used: 0499 polyvinyl alcohol resin 100phr, glycerin 15phr, modified polyether silicone wetting agent 0.3phr, water 300phr, solid content 28%. The amount of sizing is 30g / sm.

[0029] Such as Figure 4, the sizing process used is the gravure printing method, and the sizing shape is as follows figure 2 (dot shape, the distance between adjacent glue points is 3-10mm). Install the polyvinyl alcohol film and polyvinyl alcohol non-woven fabric on the respective unwinding racks 1 and 5 of the gluing compound machine respectively, and pass through the respective automatic tension controllers and automatic deviation correction devices 2 and 6 respectively, and then pass the sizin...

Embodiment 2

[0038] Use 60g / sm water-soluble polyvinyl alcohol spunlace nonwoven fabric and 0.04mm polyvinyl alcohol transparent color film for lamination.

[0039] Water-soluble adhesive formula used:

[0040] 0499 polyvinyl alcohol resin 100phr, glycerol 15phr, modified polyether silicone wetting agent 0.3phr, water 400phr, solid content 22%. The sizing amount is 60g / sm.

[0041] The sizing process used is the gravure printing method, and the sizing shape is as follows image 3 (diamond shape, the distance between adjacent glue points is 1-5mm).

[0042] The composite speed is 15m / min, and the surface temperature of the hot rolling roller is 120°C. One hot rolling is used, and then it is dried by needle clips to maintain width, and finally cooled by the cooling roller circulating in the center cooling water.

[0043] The performance of the obtained composite material is as follows (this product is used as a paving material, and there is no requirement for moisture permeability, but th...

Embodiment 3

[0050] 60g / sm water-soluble polyvinyl alcohol spunlace nonwoven fabric is used for compounding with 0.025mm polyvinyl alcohol colorless and transparent film.

[0051] Water-soluble adhesive formula used:

[0052] 0499 polyvinyl alcohol resin 100phr, sodium alkylbenzene sulfonate wetting agent 0.2phr, water 350phr, solid content 22%. The amount of sizing is 30g / sm.

[0053] Such as Figure 5 , the sizing process adopted is the rotary screen printing method, and the sizing shape is as follows figure 2 (dot shape, the distance between adjacent glue points is 3-10mm). Install the polyvinyl alcohol film and the polyvinyl alcohol non-woven fabric on the respective unwinding racks 1 and 5 of the gluing compound machine, pass through the respective automatic tension controllers and automatic deviation correction devices, and then pass through the cylinder main roller 15 Apply a water-soluble adhesive to the composite surface of the polyvinyl alcohol nonwoven fabric, and then pass...

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Abstract

The invention discloses a biodegradation multilayer composite material with high moisture penetrability. Since common glue adopted by the current glue composite products is airtight, the moisture penetrability of fabrics is greatly lowered to affect the wearing comfort, and the common glue is insoluble to water to form certain amount of water solution residues. The composite material disclosed by the invention is formed by compounding at least one layer of water soluble and biodegradable polyvinyl alcohol film and at least one layer of water soluble and biodegradable polyvinyl alcohol non-woven fabric. The composite material is characterized in that the polyvinyl alcohol film and the polyvinyl alcohol non-woven fabric are formed by compounding water soluble adhesive so as to form a plurality of gluing points between the polyvinyl alcohol film and the polyvinyl alcohol non-woven fabric. A compounded finished product disclosed by the invention can be completely dissolved in water, and the multilayer composite material prepared by the high-temperature water soluble polyvinyl alcohol film and the water soluble and biodegradable polyvinyl alcohol non-woven fabric is suitable for application of protective garment with gas and liquid blocking demands and biodegradation and water solution demands.

Description

[0001] The present invention involves a multi -layer composite material. Specifically, it is a highly wet wet textile material made of biodegradable water -soluble polyethylene glycol film and non -woven layer composite of the same material. Background technique [0002] Polyethylene resin is dissolved, solution, high -power stretching, drying, short -cut cleaning, and rolling short fiber produced., Good breathability, especially light and soft, comfortable to use, and full biodegradability, can make a variety of disposable protective clothing, work clothes, shoe covers, hats and other products. [0003] However, there is a large gap between the existing non -weaving cloth, which makes this material has great limitations in the use of some occasions, such as a large number of applications in the fields of medical care, fire protection, power stations, and anti -chemical fields.Protective clothing requires liquid resistance and solid dust blocking requirements, but existing non -wea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06B32B27/02B32B27/30B32B7/12B32B37/12B32B37/06C09J129/04
Inventor 方海素唐岷杨朝群肖先德
Owner SHIYUAN TECH WUHU NEW MATERIALS CO LTD