초록

Molecularly oriented films are produced which comprise a layer containing a blend of EVOH and nylon. The films exhibit a desirable balance of oxygen barrier and strength properties, and are ideally suited for many packaging applications.

대표청구항 ▼

A film of, or a laminate structure including as an element thereof, a heterogenous melt blended composition consisting essentially of: (1) a polyamide, and (2) from 1 to 90% by weight of an ethylene-vinyl alcohol copolymer having 15 to 65 mol percent ethylene; in the absence of a plasticizer, said c

A film of, or a laminate structure including as an element thereof, a heterogenous melt blended composition consisting essentially of: (1) a polyamide, and (2) from 1 to 90% by weight of an ethylene-vinyl alcohol copolymer having 15 to 65 mol percent ethylene; in the absence of a plasticizer, said composition having been processed at a temperature of from about 225°C. to 252°C. and being substantially free of cross-linking. A film having a thickness of from about 0.4 mils to about 20 mils made from a heterogeneous melt blended composition consisting essentially of: a polyamide; and from 10 to 90% by weight of an ethylene vinyl alcohol copolymer having 20 to 45 mol percent ethylene, in the absence of plasticizer, wherein there are regions of ethylene vinyl alcohol copolymer having an average diameter of less than 500 angstroms in the polyamide, said compositions having been processed at a temperature of from about 225°C. to 252°C. and being substantially free from crosslinking.