Patent ID: 6753054
Filing Date: 2004-06-22
Classification: B29C,B29K,B29L,B32B,Y10S,Y10T

Abstract:
An irradiated multiple layer polymeric film comprising:a. an outer protective layer comprised of a blend of from at least 50% to 100% ethylene vinyl acetate resin with 6% to 12% vinyl acetate content, wherein the incipient cross-linking of said ethylene vinyl acetate resin of the outer protective layer occurs at about 1 to 2 MR and a gel fraction of at least 0.15 is present at 6 MR; b. an inner heat sealant layer comprised of at least 50% to 100% of a material selected from the group consisting of ultra low density polyethylene, low density polyethylene, linear low density polyethylene and ionomers, wherein the incipient cross-linking of the material of said inner heat sealant layer occurs at about 5 MR or higher; wherein said film is irradiated at a minimum radiation dose level of at least 1.5 megarads, wherein said outer protective layer undergoes more cross-linking than said inner sealant layer, with the proviso that no anti-oxidant cross-linking inhibitor is present.