Moisture-permeable waterproof film used for fabric and fabrication process thereof
A moisture-permeable waterproof and manufacturing technology, which is 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 improved moisture permeability
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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] Example 1
[0077] The first and second top coats are obtained by drying the slurry consisting of the following mass proportion components:
[0078] Table 2
[0079] Example 1
[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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