Patent ID: 6555489
Filing Date: 2003-04-29
Classification: B01D,B32B,Y10T

Abstract:
A filter composite comprisinga) a first layer of glass fibers having random orientation, and b) synthetic resinous fibers extending in a second layer adjacent to said first layer of glass fibers, said second layer consisting essentially of said resinous fibers, the composite including an additional layer of non woven NYLON or RAYON fiber, c) said glass fibers having: i) diameters between 1 and 16 microns ii) lengths between about Â¼ and 1Â½ inches d) said synthetic fibers having denier between 1.6 and 40, and length between Â¼ and 2 inches, e) there being bonding resin adherent to the fibers in said layers, and wherein said resin was provided by saturation followed by application of a vacuum to remove some resin and thereby establish porosity, f) the composite overall thickness being between 0.010 and 0.100 inches.