Metallized films
AssigneeImperial Chemical Industries PLC
InventorsMartin E. Howden, Robert C. Lansbury
Life of this patent
Estimating the term…
Abstract
The invention provides a multiple-layer metallized film comprising a substrate layer of a polymer or copolymer of an alpha-olefin, the molecule of which contains from 2 to 6 carbon atoms, having on at least one surface thereof an adherent layer comprising a random copolymer of ethylene with from 0.5 to 15 wt % of a 3 to 6 carbon alpha-mono-olefin, and a metallic layer on the surface of the adherent layer remote from the substrate. Improved adhesion between the metallized and substrate layers is thereby achieved, and the multi-layer film is suitable for packaging a variety of edible products.
Claims10
A multiple-layer metallised packaging film of total thickness between 2.5 and 150 microns said film comprising a substrate layer of a polymer or copolymer of an alpha-olefin, the molecule of which contains from 2 to 6 carbon atoms, having on at least one surface thereof an adherent layer comprising a random copolymer of ethylene with from 0.25 to 15% by weight of the copolymer of an alpha-mono-olefin containing from 3 to 6 carbon atoms in its molecule, and a metallic layer on the surface of said adherent layer remote from the substrate, said metallic layer having a thickness of from monoatomic proportions to 50 microns.
Dependencies are inferred from the claim text.