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Chemically stabilized film

  • US 4,816,343 A
  • Filed: 09/17/1987
  • Issued: 03/28/1989
  • Est. Priority Date: 08/26/1986
  • Status: Expired due to Term
First Claim
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1. In a multilayer flexible film comprising a sealant layer, a core layer of very low density polyethylene, an outer layer of a flexible polyester or copolyester, and a first and a second intermediate adhesive layer, wherein said first adhesive layer bonds the core layer to the sealant layer and wherein said second adhesive layer bonds the core layer to the outer layer, said adhesive layers comprising ethylene ester copolymers or modified ethylene ester copolymers, the improvement comprising the inclusion in at least one intermediate layer of a carbonate of an alkali metal.

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