Method of introducing breathability to a non-porous continuous plastic film

摘要: A POROUS, BREATHABLE, POLYMER FILM IS PRODUCED BY FORMING SUBSTANTIALLY NON-POROUS CONTINUOUS ON SUPPORT MEMBER, APPLYING LAYER OF FILM-FORMING COMPOSITION TO SAID FILM; AND HEATING THE RESULTING STRUCTURE ABOVE SOFTENING POINT FORM UNITARY, POROUS BREATHABLE ARTICLE COMPRISED BOTH LAYERS. FIRST CAN BE FORMED MEMBER FLEXIBLE POLYURETHANE SOLUTION COMPRISING DILUENT THEREFOR. STRIPPED FROM FILM. COATED FABRICS ALSO FABRIC MATERIAL SECOND BEFORE UNITARY ARTICLE.