Heat sealing adhesive sheets or tapes

Claim 1

AS A NEW ARTICLE OF MANUFACTURE, A MENDING SHEET ADAPTED FOR THE REPAIRING OF TORN SURFACES BY ADHERENCE THERETO UNDER THE INFLUENCE OF HEAT AND PRESSURE, COMPRISING IN COMBINATION A FLEXIBLE FABRIC BASE ONE SURFACE OF WHICH IS COATED WITH A PLURALITY OF SUPERIMPOSED COATINGS, ONE OF SAID COATINGS ADHERING TO SAID BASE MEMBER AS AN UNDERCOAT, ANOTHER OF SAID COATINGS ADHERING TO SAID UNDERCOAT AND COMPRISING A SURFACE COAT, SAID SURFACE COAT CONSISTING ESSENTIALLY OF AT LEAST ABOUT SIX PARTS BY WEIGHT OF VINYL CHLORIDE VINYL ACETATE COPOLYMER INCLUDING AT LEAST SIXTY-FIVE PER CENT BY WEIGHT OF VINYL CHLORIDE AND FROM ABOUT TEN TO ABOUT THIRTY PER CENT OF VINYL ACETATE; AND OF A MINOR PORTION, NOT EXCEEDING ABOUT FOUR PARTS BY WEIGHT OF THE SURFACE COAT COMPOSITION, OF A COMPATIBLE PLASTICIZER; SAID UNDERCOAT CONSISTING ESSENTIALLY OF AT LEAST ABOUT SIX PARTS BY WEIGHT OF A VINYL CHLORIDE VINYL ACETATE COPOLYMER INCLUDING AT LEAST SIXTY-FIVE PER CENT BY WEIGHT OF VINYL CHLORIDE AND FROM ABOUT TEN TO ABOUT THIRTY PARTS BY WEIGHT OF VINYL ACETATE; AND OF A MINOR PORTION, NOT EXCEEDING THIRTYSIX PER CENT BY WEIGHT OF THE UNDERCOAT, OF A COMPATIBLE PLASTICIZER; SAID UNDERCOAT BEING COMPATIBLE WITH SAID SURFACE COAT AND HAVING A SOFTENING POINT BETWEEN ABOUT TWENTY DEGREES FAHRENHEIT AND ABOUT 100 DEGREES FARENHEIT HIGHER THAN SAID SURFACE COATING.