Patent ID: 6776947
Filing Date: 2004-08-17
Classification: B29C,B29K,B32B

Abstract:
A process for producing a breathable film composite, comprising the steps of:providing a film composite having at least a first layer and a second layer, the first layer comprising a polyolefin film, the polyolefin him comprising a polyolefin composition with a filler concentration in a range of from about 16.5 wt % to about 71.5 wt % of the polyolefin composition, the second layer comprising a material selected from the group consisting of woven fabric, non-woven fabric, knit fabric, and combinations thereof; and simultaneously passing the first layer and the second layer between at least one pair of interdigitating grooved rollers having a surface temperature of from 160Â° F. to 220Â° F. to produce a film composite having a WVTR greater than 200 g/m2/day at 38Â° C. and 90% relative humidity.