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AssigneeEastman Kodak Company
InventorsRobert F. Williams, Jr., Chen-i Lu
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Heat-sealable laminates useful as packaging materials, for example, for the packaging of photographic processing chemicals, are comprised of a metal foil, a thermoplastic polymeric film, and an interlayer formed by radiation curing of a composition comprising an acrylated epoxy resin. The laminates are manufactured by a process which comprises forming a sandwich comprising a layer of metal foil, a layer of thermoplastic polymer and an interlayer formed from a composition comprising an acrylated epoxy resin and irradiating the interlayer through the layer of thermoplastic polymer, for example by the use of ultraviolet radiation or high energy ionizing radiation, to cure the interlayer and bond it to both the layer of metal foil and the layer of thermoplastic polymer.
An article of manufacture comprising a container and alkaline fluid means disposed in said container, said container being at least partially constructed from a heat-sealable laminate having at least first, second and third layers, said first layer being a thermoplastic polymeric film in contact with said alkaline fluid means, said second layer being a barrier layer disposed between said first and third layers, and said third layer being a metal foil;
A heat-sealable laminate adapted for use as a packaging material, said laminate comprising (1) a metal foil, (2) a thermoplastic polymeric film, and (3) a radiation-cured interlayer which has been bonded to both said foil and said film by irradiation, said interlayer having been formed by irradiation of a radiation-curable composition comprising an acrylic monomer and an acrylated epoxy resin of the formula:
Dependencies are inferred from the claim text.