Rubber to metal adhesion

Claim 1

A NEW ARTICLE OF MANUFACTURE, COMPRISING A LAMINATED STRUCTURE, INCLUDING AT LEAST FOUR LAYERS, ONE OF SAID LAYERS BEING A HARD SUBSTANTIALLY NON-POROUS MATERIAL, ANOTHER OF SAID LAYERS BEING A RUBBER COMPOUND TAKEN FROM THE CLASS CONSISTING OF, NATURAL RUBBER, BUTADIENE-STYRENECOPOLYMER AND POLYCHLOROPRENE, AN INTERMEDIATE LAYER COEXTENSIVELY BONDED TO SAID NON-POROUS LAYER CONSISTING OF A PARTIALLY HALOGENATED POLYMETHYL-PENTADIENE, SAID HALOGEN BEING TAKEN FROM THE CLASS CONSISTING OF CHLORINE AND BROMINE AND WHEREIN THE EXTENT OF HALOGENATION IS IN THE ORDER OF 1.04 TO 2.50 EQUIVALENTS OF HALOGEN IN THE FINAL PRODUCT FOR EACH UNIT OF METHYL-PENTADIENE IN THE POLYMER, AND A SECOND INTERMEDIATE LAYER DISPOSED BETWEEN SAID PARTIALLY HALOGENATED POLYMER AND SAID RUBBER COMPOUND, CONSISTING OF REENFORCED RUBBER CEMENT, SAID ARTICLE BEING SUBSTANTIALLY INTEGRAL WHEREBY THE RUBBER LAYER IS COEXTENSIVELY BONDED TO THE NON-POROUS MATERIAL THROUGH SAID INTERMEDIATE LAYERS BY A BOND THAT WILL SUSTAIN A PULL OF AT LEAST 750 POUNDS PER SQUARE INCH.