Multilayer film structure

摘要

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.