Laminate of a polyolefin substrate and a surface coating of a copolymer of an olefin monomer and a polar monomer

Claim 1

AS AN ARTICLE OF MANUFACTURE, A LAMINATE STRUCTURE COMPRISING A SUBSTRATE HAVING A SURFACE CONSISTING ESSENTIALLY OF UNOXIDIZED, NORMALLY UNPRINTABLE, SOLID THERMOPLASTIC POLYOLEFIN AND A COATING HEAT-FUSED DIRECTLY ON SAID UNOXIDIZED SURFACE AT A TEMPERATURE ABOVE THE SOFTENING TEMPERATURE OF THE POLYOLEFIN SURFACE, SAID COATING CONSISTING ESSENTIALLY OF A NON-TACKY, NORMALLY SOLID, THERMOPLASTIC POLAR COPOLYMER OF AN OLEFIN MONOMER AND A POLAR MONOMER AND CONTAINING A SIGNIFICANT PROPORTION OF POLYMERIZED POLAR MONOMER UNITS SUFFICIENT TO RENDER THE COATING MORE POLAR AND MORE RECEPTIVE TO AN ORGANIC INK THAN SAID SURFACE OF SAID SUBSTRATE, SAID OLEFIN MONOMER BEING PRESENT IN AN AMOUNT SUFFICIENT TO ANCHOR SAID COATING BY HEAT-FUSION SO SAID SURFACE AND PROVIDING AN OLEFIN: POLAR MONOMER RATION OF FROM ABOUT 67:33 TO ABOUT 72:28.