Manufacture of hard-surfaced coverings and decorative clips therefor

Claim 1

IN THE MANUFACTURE OF DECORATIVE HARD-SURFACED COVER MATERIAL FOR FLOORS, WALLS, AND THE LIKE, THE STEPS COMPRISING SPREADING ON A RELEASE PAPER AT AMBIENT TEMPERATURE ABOUT .004 TO .075 INCH IN THICKNESS OF A LAYER OF A LIQUID ORGANOSOL HAVING A BROOKFIELD VISCOSITY WHITHIN THE RANGE FROM ABOUT 1,000 TO ABOUT 40,000 CPS., AS MEASURED WITH A NUMBER 4 SPINDLE AT 20 R.P.M. AT A TEMPERATURE OF 75*F. AND COMPRISING SOLIDS, INCLUDING A POLYVINYL CHLORIDE RESIN, SUSPENDED IN A LIQUID INCLUDING A PLASTICIZER WITH WHICH THE SOLIDS GELATE AND FUSE TO AN INCREASING EXTENT WITH INCREASE IN TEMPERATURE FROM A PARTIAL GELATION AT A PREDETERMINED ELEVATED TEMPERATURE WITHIN THE RANGE FROM ABOUT 250*F TO ABOUT 300*F. TO A MORE COMPLETE FINAL FUSION AT A HIGHER TEMPERATURE WITHIN THE RANGE FROM ABOUT 300*F. TO ABOUT 400*F., HEATING THE LAYER TO SAID PREDETERMINED ELEVATED TEMPERATURE TO EFFECT SAID PARTIAL GELATION, STRIPPING THE PARTIALLY GELATED LAYER FROM THE RELASE PAPER, CUTTING THE STRIPPED LAYER INTO CHIP SIZES, FORMING THE SAID CHIPS INTO THE SURFACE OF A WEAR LAYER AND HEATING THE RESULTING ARTICLE TO SAID FINAL TEMPERATURE TO EFFECT THE SAID FINAL FUSION.