Method of producing inflation film and said film
    21.
    发明授权
    Method of producing inflation film and said film 有权
    生产膨胀膜和所述膜的方法

    公开(公告)号:US06274691B1

    公开(公告)日:2001-08-14

    申请号:US09174416

    申请日:1998-10-19

    IPC分类号: C08F11002

    摘要: A method of producing an inflation film, which comprises processing an ethylene polymer or a resin composition containing said ethylene polymer in a die gap at a melting temperature of not more than 170° C., wherein said ethylene polymer is produced by an ionic polymerization method and said ethylene polymer has a density of 0.89 to 0.96 g/cm3, a melting viscosity &eegr;*[170] at 170° C. under a shear rate of 100 rad/sec of 0.001×104 to 3.5×104 poise and a weight proportion a (% by weight) of a cold xylene-soluble portion satisfying the following formula (1): a

    摘要翻译: 一种吹胀薄膜的制造方法,其特征在于,在熔融温度不高于170℃的温度下,在模具间隙中加工乙烯聚合物或含有所述乙烯聚合物的树脂组合物,其中所述乙烯聚合物通过离子聚合法 并且所述乙烯聚合物的密度为0.89至0.96g / cm 3,在170℃下的熔融粘度eta * [170]在100rad / sec的剪切速率下为0.001×104至3.5×10-4泊,重量比a( 重量比)满足下式(1)的冷二甲苯可溶部分:(其中a是乙烯聚合物的冷二甲苯可溶部分的重量比例(重量%),d是密度(g / cm3)乙烯聚合物)。