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Method for manufacturing a polyurethane product with high wetting ability, gas permeability and high water repellent ability by a dry transfer coating process
Method for manufacturing a polyurethane product with high wetting ability, gas permeability and high water repellent ability by a dry transfer coating process
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机译:通过干转移涂布法制造具有高润湿能力,透气性和高拒水性的聚氨酯产品的方法
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摘要
A method for manufacturing a P.U. product includes a front stage working, and a rear stage working. The front stage working includes: coating a first P.U. liquid on a releasing sheet to form a first P.U. surface layer, coating a second P.U. liquid on the first P.U. surface layer to form a second P.U. surface layer, bonding a substrate cloth on the second P.U. surface layer, thereby forming a first product which includes the first P.U. surface layer, the second P.U. surface layer, and the substrate cloth. The rear stage working includes: rolling a first mixing liquid on the first product to form a plurality of intensive small air vents in the second P.U. surface layer for increasing permeability, rolling a second mixing liquid containing a fluoride on the first product so that the fluoride infiltrates through the first and second P.U. surface layer for increasing a water repellent function, and rolling a third mixing liquid containing a P.U. solvent on the first product to increase comfort and quality of the first product, thereby making a final product.
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