Abstract 1. IN A METHOD FOR PRODUCING INSUPPORTED RESINOUS SURFACE COVERINGS AND THE LIKE BY APPLYING A FOAMABLE VINYL PLASTISOL LAYER TO A CELLULOSE FIBER FELT SUBSTRATE, GELLING, FUSING AND FOAMING LAYER BY HEAT AND THEN STRIPPING THE SOLIDIFIED FOAM LAYER FROM THE SUBSTRATE, THE IMPROVEMENT WHICH COMPRISES: (A) PROVIDING A MOISTURE PERVIOUS CELLULOSIC FIBER SUPPORT WEB AS THE SUBSTRATE, (B) APPLYING AN AQUEOUS RELEASE COATING OF A WATER SOLUBLE HYDROXYETHYL CELLULOSE TO THE SUPPORT WEB, (C) DEPOSITING A FOAMABLE VINYL PLASTISOL LAYER ON THE RELEASE COAT AND HEATING THE LAYER TO GELL THE LAYER AND FURTHER HEATING THE GELLED LAYER TO FUSE AND FOAM THE LAYER, (D) IMPREGNATING THE SUPPORT WEB WITH MOISTURE SO AS TO RAISE THE MOISTURE CONTENT OF THE SUPPORT WEB TO ABOUT 4 TO 10% BY WEIGHT, AND (E) STRIPPING THE FOAMED LAYER FROM THE SUPPORT WEB.
IN A METHOD FOR PRODUCING INSUPPORTED RESINOUS SURFACE COVERINGS AND THE LIKE BY APPLYING A FOAMABLE VINYL PLASTISOL LAYER TO A CELLULOSE FIBER FELT SUBSTRATE, GELLING, FUSING AND FOAMING LAYER BY HEAT AND THEN STRIPPING THE SOLIDIFIED FOAM LAYER FROM THE SUBSTRATE, THE IMPROVEMENT WHICH COMPRISES: (A) PROVIDING A MOISTURE PERVIOUS CELLULOSIC FIBER SUPPORT WEB AS THE SUBSTRATE, (B) APPLYING AN AQUEOUS RELEASE COATING OF A WATER SOLUBLE HYDROXYETHYL CELLULOSE TO THE SUPPORT WEB, (C) DEPOSITING A FOAMABLE VINYL PLASTISOL LAYER ON THE RELEASE COAT AND HEATING THE LAYER TO GELL THE LAYER AND FURTHER HEATING THE GELLED LAYER TO FUSE AND FOAM THE LAYER, (D) IMPREGNATING THE SUPPORT WEB WITH MOISTURE SO AS TO RAISE THE MOISTURE CONTENT OF THE SUPPORT WEB TO ABOUT 4 TO 10% BY WEIGHT, AND (E) STRIPPING THE FOAMED LAYER FROM THE SUPPORT WEB.
Claim 2
Dependent Claim
140 words
IN A METHOD FOR PRODUCING INSUPPORTED RESINOUS SURFACE COVERINGS AND THE LIKE BY APPLYING A FOAMABLE VINYL PLASTISOL LAYER TO A CELLULOSE FIBER FELT SUBSTRATE, GELLING, FUSING AND FOAMING LAYER BY HEAT AND THEN STRIPPING THE SOLIDIFIED FOAM LAYER FROM THE SUBSTRATE, THE IMPROVEMENT WHICH COMPRISES: (A) PROVIDING A MOISTURE PERVIOUS CELLULOSIC FIBER SUPPORT WEB AS THE SUBSTRATE, (B) APPLYING AN AQUEOUS RELEASE COATING OF A WATER SOLUBLE HYDROXYETHYL CELLULOSE TO THE SUPPORT WEB, (C) DEPOSITING A FOAMABLE VINYL PLASTISOL LAYER ON THE RELEASE COAT AND HEATING THE LAYER TO GELL THE LAYER AND FURTHER HEATING THE GELLED LAYER TO FUSE AND FOAM THE LAYER, (D) IMPREGNATING THE SUPPORT WEB WITH MOISTURE SO AS TO RAISE THE MOISTURE CONTENT OF THE SUPPORT WEB TO ABOUT 4 TO 10% BY WEIGHT, AND (E) STRIPPING THE FOAMED LAYER FROM THE SUPPORT WEB.