Patent ID: 6843949
Filing Date: 2005-01-18
Classification: A61F,B29C,B29K,C08J,C08K,Y10T

Abstract:
1. 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 film comprising a polyolefin composition and a filler, the filler concentration in a range of from about 16.5 wt % to about 71.5 wt % of the polyolefin composition; and simultaneously passing the first layer and second layer between at least one pair of interdigitating grooved rollers having a surface temperature of from 95° F. to 159° F. to produce a film composite having a WVTR greater than 200 g/m