Abstract 1. A METHOD OF PRODUCING SYNTHETIC LEATHER COMPRISING PREPARING A RELEASE SUBSTRATE BY TWISTING LONG FILAMENTS OF POLYETHYLENE TEREPHTHALATE HAVING A THICKNESS OF 10 DENIERS OR LESS TO OBTAIN YARNS HAVING A THICKNESS OF 80 TO 20 DENIERS, PLAINLY WEAVING SAID YARNS INTO CLOTH IN A DENSITY OF AT LEAST 80?INCH FOR WARPS AND AT LEAST 70/INCH FOR WOOFS AND PRESSING THE SURFACES OF THE RESULTING CLOTH IN THE PRESENCE OF THE HEAT AT A TEMPERATURE LOWER THAN THE MELTING POINT OF SAID CLOTH; APPLYING A POLYMER SOLUTION ONTO THE SURFACE OF THE RELEASE SUBSTRATE IN THE FORM OF A LAYER; COAGULATING THE POLYMER LAYER BY SOAKING IN A LIQUID WHICH IS COMPATIBLE WITH A SOLVENT OF THE POLYMER SOLUTION AND NONOSOLVENT FOR THE POLYMER; REMOVING THE SOLVENT FROM THE POLYMER LAYER SO AS TO FORM A POROUS FILM BY INTERCHANGING IN THE COAGULATING BATH THE COAGULATING LIQUID AND SAID SOLVENT DIRECTLY ON THE UPPER SURFACE SIDE OF SAID POLYMER LAYER AND THROUGH MESHES OF SAID CLOTH ON THE CLOTH SIDE OF SAID POLYMER LAYER; PEELING THE POROUS FILM FROM THE RELEASE SUBSTRATE; DRYING SAID FILM; AND LAMINATING THE SAME WITH A FIBROUS BASE MATERIAL.
A METHOD OF PRODUCING SYNTHETIC LEATHER COMPRISING PREPARING A RELEASE SUBSTRATE BY TWISTING LONG FILAMENTS OF POLYETHYLENE TEREPHTHALATE HAVING A THICKNESS OF 10 DENIERS OR LESS TO OBTAIN YARNS HAVING A THICKNESS OF 80 TO 20 DENIERS, PLAINLY WEAVING SAID YARNS INTO CLOTH IN A DENSITY OF AT LEAST 80?INCH FOR WARPS AND AT LEAST 70/INCH FOR WOOFS AND PRESSING THE SURFACES OF THE RESULTING CLOTH IN THE PRESENCE OF THE HEAT AT A TEMPERATURE LOWER THAN THE MELTING POINT OF SAID CLOTH; APPLYING A POLYMER SOLUTION ONTO THE SURFACE OF THE RELEASE SUBSTRATE IN THE FORM OF A LAYER; COAGULATING THE POLYMER LAYER BY SOAKING IN A LIQUID WHICH IS COMPATIBLE WITH A SOLVENT OF THE POLYMER SOLUTION AND NONOSOLVENT FOR THE POLYMER; REMOVING THE SOLVENT FROM THE POLYMER LAYER SO AS TO FORM A POROUS FILM BY INTERCHANGING IN THE COAGULATING BATH THE COAGULATING LIQUID AND SAID SOLVENT DIRECTLY ON THE UPPER SURFACE SIDE OF SAID POLYMER LAYER AND THROUGH MESHES OF SAID CLOTH ON THE CLOTH SIDE OF SAID POLYMER LAYER; PEELING THE POROUS FILM FROM THE RELEASE SUBSTRATE; DRYING SAID FILM; AND LAMINATING THE SAME WITH A FIBROUS BASE MATERIAL.
Claim 2
Independent Claim
194 words
A METHOD OF PRODUCING SYNTHETIC LEATHER COMPRISING PREPARING A RELEASE SUBSTRATE BY TWISTING LONG FILAMENTS OF POLYETHYLENE TEREPHTHALATE HAVING A THICKNESS OF 10 DENIERS OR LESS TO OBTAIN YARNS HAVING A THICKNESS OF 80 TO 20 DENIERS, PLAINLY WEAVING SAID YARNS INTO CLOTH IN A DENSITY OF AT LEAST 80?INCH FOR WARPS AND AT LEAST 70/INCH FOR WOOFS AND PRESSING THE SURFACES OF THE RESULTING CLOTH IN THE PRESENCE OF THE HEAT AT A TEMPERATURE LOWER THAN THE MELTING POINT OF SAID CLOTH; APPLYING A POLYMER SOLUTION ONTO THE SURFACE OF THE RELEASE SUBSTRATE IN THE FORM OF A LAYER; COAGULATING THE POLYMER LAYER BY SOAKING IN A LIQUID WHICH IS COMPATIBLE WITH A SOLVENT OF THE POLYMER SOLUTION AND NONOSOLVENT FOR THE POLYMER; REMOVING THE SOLVENT FROM THE POLYMER LAYER SO AS TO FORM A POROUS FILM BY INTERCHANGING IN THE COAGULATING BATH THE COAGULATING LIQUID AND SAID SOLVENT DIRECTLY ON THE UPPER SURFACE SIDE OF SAID POLYMER LAYER AND THROUGH MESHES OF SAID CLOTH ON THE CLOTH SIDE OF SAID POLYMER LAYER; PEELING THE POROUS FILM FROM THE RELEASE SUBSTRATE; DRYING SAID FILM; AND LAMINATING THE SAME WITH A FIBROUS BASE MATERIAL.