Patent ID: 6824886
Filing Date: 2004-11-30
Classification: B32B,C08L,Y10T

Abstract:
A coextruded film consisting of:(i) a first layer of a composition comprising a low density polyethylene (LDPE) prepared with a non-metallocene catalyst and/or a linear low density polyethylene (LLDPE) prepared with either a non-metallocene or a metallocene catalyst; (ii) a second layer of a homogeneous blend of a low density polyethylene (LDPE) with a metallocene catalyzed medium density polyethylene (mMDPE), this blend essentially consisting of from 0.5 to 99.5% by weight of mMDPE and from 99.5 to 0.5% by weight of LDPE, based on the total weight of the blend, and having a density of from 0.925 to 0.955 g/cm3, and the metallocene catalyst system essentially consisting of a bridged metallocene compound, alone or in combination with another metallocene catalyst which contributes less than 80% by weight of said metallocene; (iii) a third layer of a composition comprising a low density polyethylene (LDPE) prepared with a non-metallocene catalyst and/or a linear low density polyethylene (LLDPE) prepared either with a non-metallocene or a metallocene catalyst, said third layer being the same as or different from the first layer.