Process of manufacturing rain waterproof breathable fabric

摘要

A rain-test resistant, high-vapor-permeable, water-repellent and water-resistant manufacturing process for making such fabrics is provided. It is used in the dyeing and finishing process of fabric in which the fabric is treated with the treatment roller, knife roller, and spray methods. These combined methods can coat water-repellent agent on the fabric and form a very thin film on the fabric. This protective film on the fabric enhances the wash resistance of the fabric while it will not adversely affect the water repellence and water resistance of the fabric. Moreover, this technique of forming a very thin water-repellent film on the fabric rules out the conventional method with which the water-repellent agent dipped within the fabric structure is easily washed out with regular laundry of the fabric due to the lesser amount of the agent being attached onto the fabric.

主权项

1. A process of manufacturing a rain-resistant, high-vapor-permeable, water-repellent fabric comprising of the following steps:
(1) preparing the water-repellent solution including fluoro-containing acrylic resin, aqueous polyurethane dispersion, lemon acid, leveling agent, isocyanate curing agent, and thickener; (2) the water repellent solution applied onto the fabric using the treatment roller method, knife roller method, and the spray method; and (3) the water-repellent agent applied onto the fabric forming a very thinned film on the fabric; wherein the treated fabric possesses the properties of rain resistance, water repellence, and water column; wherein in step (3) the weight of the water-repellent solution applied onto the fabric is less than 10 g/m2; wherein in step (3) the drying temperature is 100-160° C.; and wherein in step (3) the thinned film formed on the water-repellent fabric having a thickness less than 0.05 mm.