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US 12,472,734 B2Granted
Multilayer monoaxially oriented film
AssigneeFlexopack S.A.
InventorDimitris Ginosatis
Life of this patent
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Abstract
The present invention is directed to a monoaxially oriented multilayer film suitable for shrink lidding applications.
Claims15
A monoaxially oriented, crosslinked film consisting of:
- a first outer layer;
- a second outer layer;
- an oxygen barrier layer, wherein the oxygen barrier layer consists of polyamide and/or EVOH;
- adjacent layers between the first outer layer and the oxygen barrier layer and between the second outer layer and the oxygen barrier layer, wherein each of the adjacent layers consists of one or more materials selected from the group consisting of an ethylene alpha olefin copolymer, a low density polyethylene, a high density polyethylene, an ionomer, a maleic anhydride grafted polyethylene, a maleic anhydride grafted polypropylene, an ethylene vinyl acetate, a polyamide, and a polyester;
- and
- an abuse layer, wherein the abuse layer is located between and in direct contact with both the oxygen barrier layer and an adjacent layer, wherein the abuse layer consists of an ethylene alpha olefin copolymer, a low density polyethylene, a high density polyethylene, an ionomer, a maleic anhydride grafted polyethylene, a maleic anhydride grafted polypropylene, an ethylene vinyl acetate, a polyamide, and a polyester;
- wherein the film has a shrinkage in the MD direction in a range from 1 to 30% measured according to ASTM D2732 by immersion in water at a temperature of 90° C. and an immersion time of 5 seconds;
- and wherein the film consists of the following layers:
- OUTER LAYER 1/ADJACENT LAYER 1/ADJACENT LAYER 2/ADJACENT LAYER 3/OXYGEN BARRIER LAYER/ABUSE LAYER/ADJACENT LAYER 4/ADJACENT LAYER 5/OUTER LAYER 2.
6 more elements
Dependencies are inferred from the claim text.