BLEND OF POLYETRAFLUOROETHYLENE, GLASS AND POLYPHENYLENE SULFIDE FIBERS AND FILTER FELT MADE FROM SAME

摘要

An improved intimate cardable fiber blend containing polytetrafluoroethylene fibers, dual glass fibers and polyphenylene sulfide fibers and a filtration felt including a needled batt of the intimate cardable fiber blend made by mechanically blending the polyphenylene sulfide fibers and glass fibers with polytetrafluoroethylene fibers, carding the blend to form a nonwoven batt and needling the batt to provide a felt.