Barrier films are prepared from a blend of two high density polyethylene blend components and a high performance organic nucleating agent. The two high density polyethylene blend components have substantially different melt indices. Large reductions in the moisture vapor transmission rate of the film are observed in the presence of the nucleating agent when the melt indices of the two blend components have a ratio of greater than 10/1. The resulting barrier films are suitable for t he preparation of packaging for dry foods such as crackers and breakfast cereals.
申请公布号
CA2568454(A1)
申请公布日期
2008.05.17
申请号
CA20062568454
申请日期
2006.11.17
申请人
NOVA CHEMICALS CORPORATION
发明人
SAUVAGEAU, DENNY PAUL;MARSHALL, SARAH;AUBEE, NORMAN DORIEN JOSEPH;CHECKNITA, DOUGLAS;CHISHOLM, P. SCOTT;LAM, PATRICK;CHUANG, TINGTING YU;TIKUISIS, TONY