Intrusion resistant thermal laminating film
OwnerKarl Richard Singerinventor
Life of this patent
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Abstract
Disclosed herein is an intrusion resistant thermal laminating film having a first multilayer structure of a polyester polymer layer and an ethylene methyl acrylate copolymer layer adhered thereto. The first multilayer structure is exposed to UV radiation for an effective period. A first adhesive layer is on the first multilayer structure and is an ethylene vinyl acetate copolymer or an ethylene ethyl acrylate copolymer. The film also has a printed layer of a polyolefin or a polyvinyl chloride attached to the adhesive layer. The film has high clarity and is free of a primer. The printed layer cannot be separated from the first multilayer structure without destroying the film. The film exhibits no signs of orange peel.
Claims20
An intrusion resistant thermal laminating film comprising:
- a first multilayer structure of a polyester polymer layer and an ethylene methyl acrylate copolymer layer adhered thereto, the first multilayer structure having been exposed to UV radiation for an effective period;
- a first adhesive layer on the first multilayer structure, the first adhesive layer is an ethylene vinyl acetate copolymer (EVA) or an ethylene ethyl acrylate copolymer (EEA);
- a printed layer of a polyolefin or a polyvinyl chloride attached to the first adhesive layer;
- and,
- the film having high clarity, the printed layer cannot be separated from the multilayered structural layer without destroying the film, the film shows no signs or orange peel, and is free of a primer.
A method of forming an intrusion resistant film comprising:
- providing a first web of a polyester sheet material;
- applying an ethylene methyl acrylate copolymer (EMA) or an ethylene ethyl acrylate copolymer (EEA) to the polyester sheet to form a first multilayer structure;
- exposing the first multilayer structure to UV light for an effective period;
- applying a first adhesive to the EMA layer or EAA layer by extrusion coating, the first adhesive is an ethylene vinyl acetate copolymer (EVA) or an ethylene ethyl acrylate copolymer (EEA);
- providing a printed sheet of a polymeric material;
- and,
- attaching the printed sheet to the first adhesive.
Dependencies are inferred from the claim text.