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公开(公告)号：EP2170603A1
公开(公告)日：2010-04-07
申请号：EP08772875.4
申请日：2008-07-09
CPC分类号： B32B27/32 , B32B27/18 , B32B27/30 , B32B27/34 , B32B2250/05 , B32B2307/7244 , B32B2439/80 , C08L23/06 , C08L2205/02 , Y10T428/31757 , Y10T428/31855 , Y10T428/31913 , C08L2666/06
摘要： Multilayer 'barrier' films which have excellent Water Vapor Transmission Rate (WVTR) performance are prepared using a core layer which comprises a blend of two different high density polyethylenes (HDPEs) and a nucleating agent. The films are suitable for the preparation of packages for dry foods such as crackers and breakfast cereals.
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公开(公告)号：EP2081990A1
公开(公告)日：2009-07-29
申请号：EP07816131.2
申请日：2007-11-05
发明人： AUBEE, Norman Dorien Joseph , CHUANG, Tingting , CHECKNITA, Douglas , CHISHOLM, P. Scott , LAM, Patrick , MARSHALL, Sarah , SAUVAGEAU, Denny Paul , TIKUISIS, Tony
CPC分类号： C08L23/06 , B29C47/00 , B29C47/0004 , B29C47/0021 , B29C47/0026 , B29C47/8835 , B29C55/28 , B29K2023/065 , B29K2023/083 , B29K2023/086 , B29K2105/0005 , B29K2105/0094 , B29K2995/0063 , B29K2995/0067 , B29K2995/0069 , B29L2007/008 , B32B27/08 , B32B27/32 , B32B2250/242 , B32B2270/00 , B32B2307/72 , B32B2307/7246 , B32B2439/70 , C08J5/18 , C08J2323/06 , C08J2423/06 , C08K5/0083 , C08L2201/14 , C08L2203/16 , C08L2203/162 , C08L2205/02 , C08L2205/025 , C08L2205/24 , C08L2207/062 , Y10T428/27 , C08L2666/06
摘要： 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 the preparation of packaging for dry foods such as crackers and breakfast cereals.
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