Process for providing textile floor covering with latex resin foam coating

Claim 1

PROCESS FOR PROVIDING TEXTILE FLOOR-COVERINGS WITH A STIFF RESILIENT COATING, ESSENTIALLY CONSISTING OF APPLYING TO ONE SURFACE OF THE TEXTILE FLOOR-COVERING A COMPOSITION CONSISTING ESSENTIALLY OF A FOAMED SUBSTANTIALLY UNIFORM MIXTURE PREPARED BY MIXING (A) A RUBBER LATEX DISPERSION (B) WITH AN AQUEOUS DISPERSION OF POLYVINYL ACETATE AND (C) WITH A FILLING MATERIAL SUBSTANTILLY FINELY AND UNIFORMLY DISTRIBUTED IN SAID MIXTURE AND COMPATIBLE WITH SAID MIXTURE, AND BY FOAMING THE RESULTING MIXTURE SAID AQUEOUS DISPERSION OF THE POLYVINYL ACETATE AND SAID FILLING MATERIAL BEING COMPATIBLE WITH SAID MIXTURE; 100 PARTS BY WEIGHT OF SAID COMPOSITION CONTAINING 2.5 TO 60 PARTS BY WEIGHT OF DRY RUBBER AND 1 TO 60 PARTS BY WEIGHT OF DRY POLYVINYL ACETATE IN A WEIGHT RATIO OF 1 TO 3 UP TO 8 TO 1 OF RUBBER TO POLYVINYL ACETATE, 0 TO 200 PARTS BY WEIGHT OF DRY FILLER, ALL OF SAID PARTS BEING BASED ON THE TOTAL WEIGHT OF DRY RUBBER AND DRY POLYVINYL ACETATE PRESENT IN THE COMPOSITION; HEATING THE RESULTING COATED TEXTILE FLOOR COVERING FORMED ON ONE SURFACE OF THE FLOORCOVERING, TO GELLING TEMPERATURE IN ORDER TO CAUSE GELLING OF THE COATING; PRESSING TOGETHER PART OF THE GELLED COATING AND THE CORRESPONDING REGISTERING TEXTILE FLOOR-COVERING ADHERED THERETO ON AT LEAST 1/4 TO 2/3 OF THE ENTIRE COATED SURFACE OF THE FLOOR-COVERING IN ORDER TO ATTAIN STRONG ADHERENCE BETWEEN SAID PART OF THE COATING AND THE CORRESPONDING PART OF THE FLOOR-COVERING, AND APPLYING SUBSTANTIALLY LOWER PRESSURE THAN THAT APPLIED IN SAID PRESSURE TOGETHER OF SAID PART OF THE GELLED COATING AND THE TEXTILE FLOOR-COVERING, TO THE REMAINING PART OF THE COATED TEXTILE FLOOR COVERING IN ORDER TO FORM RAISED PORTIONS OF HIGH ELASTICITY IN THE GELLED COATING; DRYING AND VULCANIZING BY HEATING THE COATED TEXTILE FLOOR-COVERING.