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    • 3. 发明申请
    • Polyethylene blend films
    • 聚乙烯共混膜
    • US20050137342A1
    • 2005-06-23
    • US10742603
    • 2003-12-19
    • Rajendra KrishnaswamyAshish Sukhadia
    • Rajendra KrishnaswamyAshish Sukhadia
    • C08L23/00C08L23/06
    • C08L23/06C08L2205/02C08L2205/025C08L2666/06
    • Compositions and methods are described herein for use in packaging having improved moisture vapor barrier properties. Compositions of the present invention can comprise between about 1 wt % and 30 wt % of a low molecular weight high density polyethylene and between about 99 wt % and 70 wt % of a higher molecular weight high density polyethylene. The low molecular weight high density polyethylene can have a weight-average molecular weight between about 1,000 g/mol and 100,000 g/mol. The higher molecular weight high density polyethylene can have a weight-average molecular weight of between about 50,000 g/mol and 500,000 g/mol that is higher than the weight-average molecular weight of the low molecular weight high density polyethylene. The compositions can have a normalized MVTR less than about 0.41 g/in2·day·mil.
    • 本文描述了组合物和方法用于具有改进的水汽阻隔性能的包装中。 本发明的组合物可以包含约1重量%至30重量%的低分子量高密度聚乙烯和约99重量%至70重量%的较高分子量的高密度聚乙烯。 低分子量高密度聚乙烯可以具有约1,000g / mol至100,000g / mol的重均分子量。 较高分子量的高密度聚乙烯可以具有高于低分子量高密度聚乙烯的重均分子量的约50,000g / mol至500,000g / mol的重均分子量。 组合物可以具有小于约0.41g /平方毫米/天的标准化MVTR。