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Moisture-permeable waterproof film used for fabric and fabrication process thereof

A moisture-permeable, waterproof, manufacturing process technology, applied in the field of textile fabrics, can solve the problems of uneven micropores and easy expansion, and achieve the effects of long active time, moderate reaction speed, and good adhesion fastness.

Active Publication Date: 2014-08-13
KUNSHAN HUAYANG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a moisture-permeable waterproof film for fabrics and its manufacturing process, which solves the disadvantages of the existing moisture-permeable coating fabrics such as uneven micropores and easy expansion when exposed to water, thereby improving the moisture permeability of the fabric itself performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0073] Embodiment 1-3: A moisture-permeable waterproof film for fabrics, the moisture-permeable waterproof film is superimposed by the first primer layer, the first topcoat layer and the topcoat layer coated on the surface of the second topcoat layer composition;

[0074] The primer layer is obtained by drying the slurry consisting of the following mass proportion components:

[0075] Table 1

[0076]

[0077] The first and second top coats are obtained by drying the slurry consisting of the following mass proportion components:

[0078] Table 2

[0079]

[0080] The thickness ratio among the above-mentioned primer coat, the first top coat and the second top coat is 4:14~16:9.5~10.5;

Embodiment 1

[0081] Example 1 is 4:14:10.5, Example 2 is 4:15:9.5, and Example 3 is 4:16:10.

[0082] The mass ratio among the above-mentioned primer coat, the first top coat and the second top coat is 1: 2.8~3.2: 1.8~2.2;

[0083] Example 1 is 1:2.8:2.2, Example 2 is 1:3:2, and Example 3 is 1:3.2:1.8.

[0084] A manufacturing process for preparing the above-mentioned moisture-permeable waterproof film, the moisture-permeable waterproof film is composed of an undercoat layer, a first topcoat layer and a second topcoat layer coated on the surface of the first topcoat layer; comprising The following steps:

[0085] Step 1, preparation liquid viscosity is the primer slurry of the described primer layer of 4000~7000mpas, note: embodiment 1 is 4000mpas, embodiment 2 is 6000mpas, embodiment 3 is 7000mpas, has and comprises the following sub-steps:

[0086] Sub-step 1-1, mix butanone, water and polyurethane resin according to the mass ratio of 66~68:3~5:29~31 to form the main resin solution, no...

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Abstract

The invention discloses a moisture-permeable waterproof film used for a fabric and a fabrication process thereof. According to the invention, a primary coating comprises polyurethane resin, butanone, toluene, water, hexane diisocyanate and N-methylethanolamine, and a first and second surface coatings comprise polyurethane resin, butanone, toluene, water and N-methylethanolamine. The fabrication process comprises the following steps: mixing hexane diisocyanate with main resin; mixing water with butanone to form a solvent which is put into a main resin mixed solution in at least six steps; filtering the mixed solution with a nylon net so as to obtain a filtered main resin mixed solution and carrying out deaeration treatment so as to form a primary coating slurry; preparing a surface coating slurry with the viscosity of a conjugate solution being 3500 to 6000 mpas; coating the primary coating slurry on the surface of release paper to form the primary coating, with coated weight being 4 to 6 g / m<2>; coating the surface coating slurry on the surface of the primary coat to form the surface coatings; and drying the release paper with the surface coatings and peeling the surface coatings off the release paper. According to the invention, the disadvantages that existing hydrophilic moisture permeable processing coating fabrics have nonuniform micropores and easily swell when contacting with water are overcome, and therefore, moisture permeable performance of a fabric itself is improved.

Description

technical field [0001] The invention relates to a moisture-permeable waterproof film for fabrics and a manufacturing process thereof, belonging to the technical field of textile fabrics. Background technique [0002] The hydrophilic non-porous PU moisture-permeable raw material currently used in the market, this method is to apply the hydrophilic non-porous PU moisture-permeable raw material to the surface of the base fabric through a coating machine, and then pass it through the coating machine oven. Hot air drying, solvent volatilization, and film formation. Make the fabric waterproof and moisture-permeable. The moisture-permeable principle is that the moisture-permeable raw materials contain hydrophilic substances, which have the functions of moisture absorption-diffusion-desorption. The moisture-permeable fabric processed by this process will swell when it encounters water, resulting in a decrease in the abrasion resistance of the film, and the moisture-permeable perfor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/40B32B37/15B32B37/02C09D175/04
Inventor 张子睿
Owner KUNSHAN HUAYANG NEW MATERIAL
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