Multi-layer, ethylene polymer-based films with high-density polyethylene based stiffening layer

摘要

A multi-layer film for making pouches for containing flowable materials, said multi-layer film having generally five layers in order: inner sealant-layer, first interposed layer, the core layer, second interposed layer, and the outer sealant layer. All layers are ethylene-based. The combined thickness of the first and the second interposed layers is in the range of from about 10% to about 27% of the total thickness of said multi-layer film. Similarly, a combined thickness of the inner and the outer sealant-layers is in the range of from about 10% to about 27% of the total thickness of the multi-layer film. The interposed layers are of a high-density polyethylene that has a density of at least 0.950 g/cm.³ and a melt-index of less than 1.05 dg/min.