METHOD FOR PRODUCING POLYTETRAFLUOROETHYLENE PAPER AND POLYTETRAFLUOROETHYLENE PAPER

摘要

A method for producing a polytetrafluoroethylene paper, which comprises a step of dispersing a polytetrafluoroethylene fibrous powder in a liquid, a step of making a paper on a substrate having open pores of a pore diameter of 100 to 700 μm, a step of a drying treatment and a firing treatment, a step of pre−cooling with air, a step of successive cooling by means of a cooling drum, and then stripping a paper from the substrate. The method allows the production of a paper having a great thickness and easy adjustment of the thickness of a paper.