High Density Polyethylene Blend Films

摘要

A polymer blend comprising high density polyethylene, hydrocarbon resin and nucleating agent; non-oriented film layers and non-oriented films comprising the blend; and packaging articles comprising the non-oriented film are provided. The non-oriented film has normalized moisture vapor transmission rate of no greater than 0.30 g-mil/100 in2/day measured at about 100° F. and 90% external relative humidity. The polymer blend comprises from about 69% by weight to about 90% by weight high density polyethylene, wherein the high density polyethylene has a melt index of at least 1.0 g/10 min and a density greater than 0.958 g/cc; from about 5% by weight to about 30% by weight hydrocarbon resin; and from about 0.01% by weight to about 1% by weight nucleating agent.