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    PE moulding composition for producing injection-molded screw cap closures and high-strength screw cap closure for carbonated beverages produced therewith
    1.
    发明授权
    PE moulding composition for producing injection-molded screw cap closures and high-strength screw cap closure for carbonated beverages produced therewith 有权
    用于生产注模螺旋盖盖的PE模制组合物和用其生产的碳酸饮料的高强度螺帽封盖

    公开(公告)号：US08663790B2

    公开(公告)日：2014-03-04

    申请号：US12735139

    申请日：2008-12-13

    申请人： Joachim Berthold ,  Diana (nee Boos) Doetsch ,  Gerhardus Meier ,  Albert Weber

    发明人： Joachim Berthold ,  Diana (nee Boos) Doetsch ,  Gerhardus Meier ,  Albert Weber

    IPC分类号： B32B27/00 ,  B29C47/00

    CPC分类号： C08L23/06 ,  C08L23/0815 ,  C08L2205/02 ,  C08L23/00

    摘要： The invention relates to a polyethylene molding composition having a multimodal molecular mass distribution and comprising a first ethylene homopolymer fraction (I), a second ethylene copolymer fraction (II) and a third ethylene copolymer fraction (III). The molding composition has a density at a temperature of 23° C. in the range from 0.945 to 0.953 g/cm3, an MFR (190° C./5 kg) in the range from 2 to 7 g/10 min and a viscosity number VN3 of the total mix of ethylene homopolymer fraction (I), copolymer fraction (II) and ethylene copolymer fraction (III), measured in accordance with ISO/R 1191 in decalin at a temperature of 135° C., in the range from 200 to 250 cm3/g. The invention further relates to the use of such a molding composition for producing high-strength injection-molded screw cap closures for bottles comprising beverages, especially carbonated beverages.

    摘要翻译： 本发明涉及具有多峰分子量分布且包含第一乙烯均聚物馏分（I），第二乙烯共聚物部分（II）和第三乙烯共聚物部分（III））的聚乙烯模塑组合物。 模塑组合物的温度为23℃，密度为0.945〜0.953g / cm3，MFR（190℃/ 5kg）为2〜7g / 10min，粘度 乙烯均聚物级分（I），共聚物级分（II）和乙烯共聚物级分（III）的总混合物的数量VN3，在萘烷中在135℃的温度下根据ISO / R 1191测量，范围为 200至250cm 3 / g。 本发明还涉及使用这种模制组合物来生产用于瓶子的高强度注射模制螺帽盖，所述瓶盖包括饮料，特别是碳酸饮料。