Patent ID: 9713914
Date: 2017-07-25
CPC Classifications: A41D,B32B,Y10T

Claim:
1. A breathable and waterproof composite fabric comprising: a fabric sheet having opposite first and second surfaces and defining a plurality of micropores extending through said first and second surfaces; and a waterproof first plastic film of a non-porous material that is bonded to said first surface of said fabric sheet, that conforms to said first surface of said fabric sheet, and that is perforated to form a plurality of hollow protrusions extending into corresponding ones of said micropores, said first plastic film having inner and outer surfaces, said inner surface being in contact with said first surface of said fabric sheet; wherein each of said hollow protrusions defines a channel that has a funnel shape and that extends through said inner and outer surfaces for imparting breathability to said first plastic film, wherein channel has a minimum diameter of less than five microns and greater than 0.5 micron, and wherein each of said micropores have a diameter ranging from 20 microns to 200 microns.