METHOD FOR PRODUCING POROUS POLYMER SHEET

摘要

PROBLEM TO BE SOLVED: To provide a method for continuously producing a porous polymer sheet having high air permeability and waterproofness in high efficiency. SOLUTION: The porous polymer sheet is produced by forming a solid sheet by the extrusion molding of a molding material produced by mixing and dispersing a pore-forming agent and a polymer modifying agent to a polymer material and dissolving the pore forming agent in the produced solid sheet with a solvent which dissolves the pore-forming agent and does not dissolve the polymer material. COPYRIGHT: (C)2005,JPO&NCIPI