Lettering film

Claim 1

A COMPOSITE SUPPORTED LETTERING-FILM STRUCTURE AS HEREIN DESCRIBED, ADAPTED FOR STORING AND FOR FORMING INTO DESIRED SHAPES WHILE IN STACK FORM, WITH SUBSEQUENT READY REMOVAL OF INDIVIDUAL UNITS THEREFROM, SAID STRUCTURE COMPRISING A THIN, FLEXIBLE AND CONFORMABLE LETTERING-FILM TEMPORARILY MOUNTED ON A UNITARY CARRIER SHEET, THE LETTERING-FILM CONSISTING OF (1) A DECORATIVE WEATHER-RESISTANT FILM, AT LEAST ONE MIL THICK, OF "NON-PAINTABLE" ORGANIC POLYMER MATERIAL SELECTED FROM THE CLASS CONSISTING OF METHACRYLATE POLYMERS VINYL CHLORIDE POLYMERS, AND A HEAT-CURED BLEND OF ALKYLD RESIN AND AMINOALDEHYDE RESIN; AND, PERMANENTLY BONDED TO ONE SURFACE OF SAID FILM, (2) A LAYER OF NORMALLY NONTACKY WATERPROOF ADHESIVE SELECTED FROM THE CLASS CONSISTING OF HEAT-ACTIVATIBLE AND SOLVENTACTIVATIBLE ADHESIVES AND COMPRISING A RUBBERY POLYMERIC BASE, A COMPATIBLE HEAT-ADVANCING PHENOL-ALDEHYDE RESIN, AND A COMPATIBLE THERMOPLASTIC TACKIFIER RESIN; THE CARRIER SHEET BEING TEMPORARILY ADHERED TO THE OTHER SURFACE OF SAID DECORATIVE FILM AND DRY-STRIPPABLE THEREFORM; SAID CARRIER SHEET COMPRISING A FLEXIBLE SHEET MATERIAL EACH SURFACE OF WHICH CONSTITUTES A SMOOTH CONTINUOUS FILM OF A POLYMER SELECTED FROM THE CLASS CONSISTING OF THERMOSET PLASTICIZED AMINO-ALDEHYDE RESIN, POLYETHYLENE, CELLULOSIC POLYMER, AND METHACRYLATE POLYMER; THE ELEMENTS OF THE STRUCTURE BEING SELECTED SUCH THAT THE ADHESION AT NORMAL TEMPERATURES OF THE DECORATIVE FILM TO THE ADJACENT SURFACE OF THE CARRIER SHEET IS GREATER THAN THE ADHESION OF THE ADHESIVE LAYER TO THE OPPOSITE SURFACE OF THE CARRIER SHEET.