Clear barrier composites containing polyisobutylene/polyolefin alloy components

摘要

A composite film composition comprising a rubber containing core layer wherein the layer comprises about 50 to 85 wt % rubber and 15 to 40 wt % of a polyolefin and at least one polyolefin skin layer co-extruded onto said core layer. In a preferred embodiment, the core layer comprises about 55 to about 70 wt % PIB and about 30 to about 45 wt % of PP or RCPP having been co-extruded to be sandwiched between two polyolefin layers comprisng PP or RCPP.