Base sheet for strippable wall covering and process for making

Claim 1

A PROCESS FOR MANUFACTURING A BASE SHEET FOR STRIPPABLE WALL COVERING COMPRISING THE STEPS OF (A) FORMING A PAPER SHEET FROM CELLULOSIC FIBERS FILLED FROM ABOUT 0 PERCENT TO 50 PERCENT BY WEIGHT SYNTHETIC FIBERS FILLED WITH PIGMENT IN THE PRESENCE OF A FILLER RETENTION AGENT COMPRISING A MELAMINEFORMALDEHYDE RESIN AND A METHYLATED METHYLOL MELAMINE RESIN; (B) PARTIALLY DRYING THE FORMED PAPER SHEET; (C) SATURATING THE FORMED PAPER SHEET WITH NOT MORE THAN ABOUT 20 PERCENT BY WEIGHT OF SELF-REACTIVE VINYL ACRYLIC TEROLYMER LATEX COMPRISING BUTYL ACRYLATE, VINYL ACETATE, AND A THIRD MONOMER CONTAINING POLYFUNCTIONAL GROUPS CAPABLE OF CROSSLINKING WITH SIMILAR GROUPS IN ADJACENT CHAINS WHEREIN THE PROPORTION OF THE BUTYL ACRYLATE IS IN THE RANGE OF ABOUT 65 TO 85 PARTS BY WEIGHT, THE PORPORTION OF THE VINYL ACETATE IS IN THE RANGE OF ABOUT 15 TO 35 PARTS BY WEIGHT, AND THE PORPORTION OF THE THIRD MONOMER IS IN THE RANGE OF ABOUT 1 TO 10 PARTS BY WEIGHT AND CHARACTERIZED BY A SECOND ORDER TRANSITION TEMPERATURE OF THE MAGNITUDE OF ABOUT -36*C., A TENSILE STRENGTH OF THE MAGNITUDE OF ABOUT 240 PSI, A TENSILE STRENGTH AFTER CURING 30 SECONDS AT 130*C. OF THE MAGNITUDE OF ABOUT 275 PSI, AN ELONGATION OF THE MAGNITUDE OF ABOUT 925 PERCENT, AND AN ELONGATION AFTER CURING 30 SECONDSS AT 130*C. OF THE MAGNITUDE OF ABOUT 300 PERCENT; AND, (D) DRYING THE SATURATED SHEET WHICH H REACT THE METHYLATED METHYLOL MELAMINE RESIN AND THE LATEX TO PRODUCE THE BASE SHEET WHICH HAS THROUGHOUT A NONCONTINUOUS MEMBRANE FORMED FROM THE LATEX.