MATERIAL HAVING HIGH WATER VAPOR TRANSMISSION AND HIGH WATERPROOFING

摘要

PURPOSE:To obtain a material having high water vapor transmission and high waterproofing, by laminating a polyurethane resin film having high water vapor transmission, high air permeability and waterproofing through a specific adhesive to a fibrous ground fabric. CONSTITUTION:A polyurethane resin solution is applied to a releasable film, coagulated in a wet state, dried with hot air, to form a polyurethane resin film having improved high water vapor transmission, high air permeability, and waterproofing. Then an adhesive solution obtained by adding 1-50pts.wt. based on the amount of adhesive of 5-100mum fibers and powdery pulp to a two-pack reactive polyurethane resin as an adhesive is applied to the resin film, which is subjected to contact bonding and stuck to a natural or synthetic fiber ground fabric in a semi-dry state, and heated to finish the reaction. The film for release is removed, treated with a water repellent, to give a material having high water vapor transmittance and high waterproofing suitable for various sports wear.