Manufacture of laminated sheet materials

Claim 1

A PROCESS OF MANUFACTURING FLEXIBLE LAMINATED SHEET MATERIAL INCLUDING A FLEXIBLE BACKING LAYER AND A FLEXIBLE ORNAMENTAL FACING LAYER, COMPRISING THE STEPS OF PREPARING A VULCANIZABLE SHEET BY ADDING TO A MASS OF VULCANIZABLE RUBBER COMPOSITION A THERMOSETTING RESINOUS CONDENSATION PRODUCT WITH THE QUANTITY OF THERMOSETTING RESINOUS CONDENSATION PRODUCT BEING AT LEAST 5% BY WEIGHT OF THE MASS OF RUBBER COMPOSITION, MIXING THE MASS IN A ZONE OF HEAT AT A TEMPERATURE SUFFICIENT TO MELT SAID THERMOSETTING RESINOUS CONDENSATION PRODUCT, ROLLING THE HEATED MASS TO FORM A THIN SHEET WHILE PARTIALLY POLYMERIZING SAID THERMOSETTING RESINOUS CONDENSATION PRODUCT TO PREVENT SAID MASS FROM LIQUEFYING DURING SUBSEQUENT HEATING, IMPREGNATING A SHEET OF WOOD VENEER WITH A MASS OF SAID THERMOSETTING RESINOUS CONDENSATION PRODUCT, PRESSING SAID THIN SHEET ON SAID IMPREGNATED SHEET OF WOOD VENEER UNDER HEAT TO VULCANIZE SAID RUBBER COMPOSITION IN SAID THIN SHEET AND TO SIMULTANEOUSLY CAUSE FULL POLYMERIZATION OF SAID RESINOUS CONDENSATION PRODUCT IN SAID THIN SHEET AND ON SAID IMPREGNATED SHEET OF WOOD VENEER WHILE INTIMATELY BONDING SAID SHEET OF WOOD VENEER AND SAID THIN SHEET.