Multilayer film and process for producing the same

A multilayer film comprising a polymeric base material that is selected from the group consisting essentially of polyolefin and/or polyester, a polymer resin layer and a metal deposited layer and/or a metal oxide deposited layer that is selected from the group consisting of aluminum, aluminum oxide, and aluminum based alloy, provided on the polymeric base material, wherein said polymer resin layer comprises a polymer produced by polymerization of an unsaturated compound having (a) two or more ethylenic bonds and/or (b) two or more acetylenic bonds in one molecule and having neither an acrylic group nor a methacrylic group, said polymer being present in said polymer resin layer in an amount of 80% by weight or more based on said polymer resin layer, wherein the thickness of said polymer resin layer is not less than 0.02 μm and not more than 1 μm, and wherein said unsaturated compound is one or more compounds selected from the group consisting of an unsaturated fatty acid, an unsaturated fatty ester, and a terpene having an unsaturated bond.

A process for producing a multilayer film, comprising forming a polymer resin layer on a base material and depositing a metal layer and/or a metal oxide layer on the base material, wherein said forming a polymer resin layer comprises depositing an unsaturated compound having two or more ethylenic bonds and/or acetylenic bonds in one molecule and having neither acrylic group nor methacrylic group on the base material, and then irradiating the unsaturated compound with energy rays.

A multilayer film comprising a polymeric base material that is selected from the group consisting essentially of polyolefin and/or polyester, a polymer resin layer and a metal layer and/or metal oxide layer that is selected from the group consisting of aluminum, aluminum oxide, and aluminum based alloy, provided on the polymeric base material, wherein said polymer resin layer comprising a polymer produced by polymerization of an unsaturated compound having (a) two or more ethylenic bonds and/or (b) two or more acetylenic bonds in one molecule and having neither an acrylic group nor a methacrylic group, said polymer being present in said polymer resin layer in an amount of 80% by weight or more based on said polymer resin layer, and wherein the thickness of said polymer resin layer is not less than 0.02 μm and not more than 1 μm, and wherein said unsaturated compound is one or more compounds selected from the group consisting of an unsaturated fatty acid, an unsaturated fatty ester, and a terpene having an unsaturated bond.