Amorphous nylon composition and films
AssigneeW. R. Grace & Co.-Conn.
InventorSolomon Bekele
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Abstract
A multi-layer film useful in vacuum skin packaging and other packaging applications, and having a combination of good implosion resistance, formability and high oxygen barrier characteristics, includes a core layer having an oxygen barrier material such as ethylene vinyl alcohol copolymer (EVOH) and a layer or layers comprising an amorphous nylon with or without a low flexural modulus polymeric material such as low modulus nylon (polyamide or copolyamide). Layers of ethylene vinyl acetate copolymer (EVA) or other olefin homopolymers or copolymers, polymeric adhesive layers, a heat-sealable layer, and a heat resistant layer are also disclosed. A composition of matter comprising a blend of an amorphous nylon and a low modulus polymeric material, especially a low modulus nylon, is also disclosed.
Claims9
A high oxygen barrier implosion resistant film comprising:
- a) a first layer comprising a heat sealable polymeric material;
- b) a second layer comprising an olefin polymer or copolymer;
- c) a third layer comprising a polymeric adhesive;
- d) a fourth layer comprising amorphous nylon;
- e) a fifth layer comprising an oxygen barrier material;
- f) a sixth layer comprising amorphous nylon;
- g) a seventh layer comprising a polymeric adhesive;
- h) an eighth layer comprising an olefin polymer or copolymer;
- and
- i) a ninth layer comprising a heat resistant polymeric material.
Dependencies are inferred from the claim text.