Coextruded multilayer film

A multilayer film comprising:

• a coextrusion of nylon and a chemically modified polyolefin selected from the group consisting of ethylene vinyl acetate polymer, high density polyethylene, and rubber modified high density polyethylene, each chemically modified by the provision of functional groups to the polymer which have a strong affinity for nylon and which will form strong bonds to nylon under the heat and pressure of coextrusion.

A process for producing a multi-layer film, comprising:

• tubular blown film coextruding nylon and a chemically modified polyolefin selected from the group consisting of ethylene vinyl acetate polymer, high density polyethylene and rubber modified high density polyethylene, each chemically modified by the provision of functional groups to the polymer which have a strong affinity for nylon and which will form a strong bond to nylon under heat and pressure of coextrusion.

A process for producing a multi-layer film, comprising:

• coextruding nylon, a chemically modified polyolefin, and a polymer, said chemically modified polyolefin being selected from the group consisting of ethylene vinyl acetate polymer, high density polyethylene and rubber modified high density polyethylene, each chemically modified by the provision of functional groups to the polymer which have a strong affinity for nylon and which will form a strong bond to nylon under heat and pressure of coextrusion, said polymer being selected from the group consisting of low, medium, and high density polyethylene, ionomers, ethylene vinyl acetate polymer, and ethylene acrylic acid polymer.

A multi-layer film comprising:

• a coextrusion of nylon, a chemically modified polyolefin, and a polymer layer bonded to said modified polyolefin, said modified polyolefin selected from the group consisting of ethylene vinyl acetate polymer, high density polyethylene, and rubber modified high density polyethylene, each chemically modified by the provision of functional groups to the polymer which have a strong affinity for nylon and which will form strong bonds to nylon under the heat and pressure of coextrusion, said polymer layer being selected from the group consisting of high, medium and low density polyethylene, ionomers, ethylene vinyl acetate polymer, ethylene acrylic acid polymer, and rubber modified polyethylene.

A multi-layer film comprising:

• a coextrusion of nylon between two layers of a chemically modified polyolefin and a layer of polymer bonded to each of said layers of said modified polyolefin, said modified polyolefin being selected from the group consisting of ethylene vinyl acetate polymer, high density polyethylene, and rubber modified high density polyethylene, each chemically modified by the provision of functional groups to the polymer which have a strong affinity for nylon and which will form strong bonds to nylon under the heat and pressure of coextrusion, and said polymer being selected from the group consisting of high, medium, and low density polyethylene, ionomers, ethylene vinyl acetate polymer, ethylene acrylic acid polymer, and rubber modified polyethylene.