Patent ID: 9463420
Filing Date: 2016-10-11
CPC Classification: B01D,B32B,C08J,Y10T

Claim Text:
1. A method for manufacturing a porous fluororesin composite, comprising the steps of: applying a fluororesin dispersion including a dispersing medium and a fluororesin powder dispersed therein between a flat foil and a porous base material; then drying the dispersing medium and sintering the fluororesin powder at a temperature of the melting point of the fluororesin or more; then removing the flat foil to form a fluororesin composite composed of the porous base material and a fluororesin thin film formed on one surface of the porous base material; and then stretching the fluororesin composite, wherein the thickness of the fluororesin thin film is 20 μm or less and the Gurley's number thereof is 300 seconds or more.