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BIAXIALLY ORIENTED POLYPROPYLENE FILM HAVING IMPROVED WATER VAPOR AND OXYGEN BARRIER PROPERTIES
BIAXIALLY ORIENTED POLYPROPYLENE FILM HAVING IMPROVED WATER VAPOR AND OXYGEN BARRIER PROPERTIES
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机译:具有改善的水蒸气和氧气阻隔性能的双轴取向聚丙烯薄膜
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摘要
A biaxially oriented polypropylene film is described. The base ply of the film essentially consists of a polypropylene prepared by means of a metallocene catalyst. This polypropylene is distinguished by a mean isotactic block length of greater than 40, an n-heptane soluble fraction of less than 1% and a ratio of the weight average molecular weight Mw to the number average molecular weight Mn of less than 4.
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