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 TEMPORATILY MOUNTED ON A UNITARY CARRIER SHEET, THE LETTERING-FILM COMPRISING; (1) A DECORATIVE WEATHER-RESISTANT FILM, AT LEAST ONE MIL THICK, OF PAINTABLE ORGANIC FILM-FORMING MATERIAL SELECTED FROM THE CLASS CONSISTING OF DRYING-OIL VARNISHES, CELLULOSIC LACQUERS, AND AIR-DRYING ALKYD RESINS; AND, PERMANENTLY BONDED TO ONE SURFACE OF SAID FILM, (2) A LAYER OF NORMALLY NON-TACKY WATERPROOF ADHESIVE SELECTED FROM THE CLASS CONSISTING OF HEAT-ACTIVATIBLE AND SOLVENT-ACTIVATIBLE ADHESIVES AND COMPRISING A RUBBERY POLYMERIC BASE AND A COMPRISIBLE HEAT-ADVANCING PHENOL-ALDEHYDE RESIN; THE CARRIER SHEET BEING TEMPORARILY ADHERED TO THE OTHER SURFACE OF SAID DECORATIVE FILM AND DRY-STRIPPABLE THEREFROM; SAID CARRIER SHEET COMPRISING A FLEXIBLE SHEET MATERIAL EACH SURFACE OF WHICH CONSTITUTES A SMOOTH CONTINUOUS FILM OF A FLEXIBLE WATERPROOF FILM-FORMING 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.