초록 ▼

A multi-layered thermoplastic polyolefin film having an improved combination of physical characteristics is disclosed. In particular, the multi-layered film evidences an improved combination of elongation, oxygen transmission and heat shrinkability. Preferred five layer embodiments of the film compr

A multi-layered thermoplastic polyolefin film having an improved combination of physical characteristics is disclosed. In particular, the multi-layered film evidences an improved combination of elongation, oxygen transmission and heat shrinkability. Preferred five layer embodiments of the film comprises (1) a core layer of either a low density polyethylene homopolymer or an ethylene acetate copolymer or a blend of an ethylene vinyl acetate copolymer with a linear low density polyethylene; (2) two adjacent intermediate layers of a very low density polyethylene with a density of less than 0.900 gms/ccm, and (3) two surface layers of an ethylene vinyl acetate copolymer.

대표청구항 ▼

A multiply film comprising: a first interior layer comprising a copolymer of ethylene and vinyl acetate; at least one other interior layer comprising a very low density polyethylene having a density below 0.900 grams per cubic centimeter; and two surface layers comprising a copolymer of ethylene and

A multiply film comprising: a first interior layer comprising a copolymer of ethylene and vinyl acetate; at least one other interior layer comprising a very low density polyethylene having a density below 0.900 grams per cubic centimeter; and two surface layers comprising a copolymer of ethylene and vinyl acetate; wherein the film has an oxygen transmission rate of at least about 15000 cc/m2 mil 24 hours at standard temperature and pressure.