Multilayer film structure

U.S. Patent Number: 5346763

Abstract: A multilayer film structure includes: (A) a core layer of high density polyethylene including either a minor proportion of a maleic anhydride modified high density polyethylene blended therein or having (B) a skin layer of maleic anhydride modified polyethylene on one side and (C) on the other side a heat sealable or printable skin layer; this structure having an unbalanced orientation such that the degree of transverse direction orientation produces a visible rippled and striated appearance, with the ripples and striations being parallel to the transverse direction of orientation. This structure can also have a layer of ethylene vinyl alcohol copolymer on the maleic anhydride modified polyethylene-containing layer. The maleic anhydride modified HDPE or the EVOH can be metallized and the final structure laminated to a separate film structure.

Inventors: Balloni; Riccardo (Milan, IT), Tsai; M. Lawrence (Rochester, NY)

Assignee: Mobil Oil Corporation (Fairfax, VA)

Application Number: 08/051,121

Issued: 1994-09-13

Expired: 2006-09-13

Classes: 428/349 ; 428/35.3; 428/353; 428/36.6; 428/461; 428/516; 428/520; 428/910

Field of search: 428/349,353,36.6,35.3,461,463,516,520,910

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