POROUS MATERIAL AIR FILTER FILTER MEDIUM AIR FILTER UNIT AND SUPPORT MATERIAL FOR AIR FILTER FILTER MEDIUM

摘要

In the air filter media having the polytetrafluoroethylene porous membrane and the breathable support material laminated on at least one side of the porous membrane, the polytetrafluoroethylene porous membrane and the breathable support material are connected by independent fibers and / or nodules A hot-melt adhesive of fiber is inserted and bonded. As a result, the collecting efficiency of the air filter media can be maintained at a high level, and the pressure loss is not so large as compared with the case of heat sealing.