Article and method of making resilient floor covering having air pockets
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5. A DECORATIVE SURFACE COVERING HAVING A THREE-DIMENSIONAL APPEARANCE WHICH COMPRISES A PGIMENTED BASE SHEET AND A VINYL CHLORIDE RESINOUS COMPOSITION FILM HAVING A THICKNESS OF AT LEAST 0.006 INCH SECURELY BONDED TO ONE SURFACE OF SAID BASE, SAID FILM HAVING AN EMBOSSED DESIGN EXTENDING TO A DEPTH OF AT LEAST 0.003 INCH IN THE SURFACE OF THE FILM CONTACTING SAID BASE COMPRISING A MULTIPLICITY OF DESIGN AREAS ARRANGED IN CONTINUOUS RELATION, AT LEAST SOME OF SAID DESIGN AREAS HAVING A PLURALITY OF ALTERING RIDGES AND GROOVES, WHOSE PROFILES TAKEN ALONG A SECTION AT RIGHT ANGLES TO THE SURFACE OF THE FILM ARE FORMED OF SUBSTANTIALLY STRIGHT LINES. EACH OF SAID RIDGES HAVING ONE STEEP SIDE AND ONE MORE GENTLY SLOPING SIDE, THE PROFILES OF THE STEEP SIDE OF ALL THE RIDGES BEING PARALLEL AND THE PROFILES OF THE GENTLY SLOPING SIDES VARYING
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