Film composition
AssigneeMobil Oil Corporation
InventorsMingliang L. Tsai, Riccardo Balloni
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Abstract
A metallized multilayer film made from a polymer substrate, preferably polypropylene, is modified by a maleic anhydride modified propylene polymer which can be located on a surface of the substrate or incorporated within the substrate has a skin layer of polyvinyl alcohol which is capable of being metallized.
Claims16
A metallized film composition comprising a polymer substrate having a surface which is modified by an adhesion promoting agent, the modified surface of the polymer substrate having a skin layer of 100% polyvinyl alcohol, the skin layer having a metal layer directly thereon.
A process for making a metallized film composition comprising the steps of:
- (a) providing a polymeric substrate film;
- (b) modifying at least one surface of the polymeric substrate film with a maleic anhydride modified polypropylene homopolymer or copolymer;
- (c) applying an oxygen barrier consisting essentially of polyvinyl alcohol to the modified surface of the substrate;
- and
- (d) metallizing the polyvinyl alcohol surface formed in step (c).
Dependencies are inferred from the claim text.