Filter composite embodying glass fiber and synthetic resin fiber

A filter composite comprising

• a) 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 ¼ and 1½ inches
• d) said synthetic fibers having denier between 1.6 and 40, and length between ¼ 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.