COMPOSITION MAINLY COMPOSED OF PTFE, MIXED POWDER, MOLDING MATERIAL, FILTERING MEDIUM FOR FILTER, AIR FILTER UNIT, AND POROUS MEMBRANE MANUFACTURING METHOD

摘要

Provided is a composition with which a porous membrane, whose performance is not degraded even when compressive force is received in a post processing step, can be obtained. The composition according to an aspect of the present invention contains polytetrafluoroethylene that can be fiberized, a non-hot melt processing component that is not fiberized, and a hot melt processable component with a melting point of lower than 320°C that is not fiberized at between 0.1 wt% and 20 wt%.