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塑料包裝袋的原料選用

日 期:2014-5-9 17:28:02 已 閱:947 次

  塑料包裝袋按材質可分為OPP、CPP、PP、PE、PVA、EVA、復合袋、共擠袋等。今天小編為大家介紹的是塑料包裝袋原材料的一種CPP,CPP優勢比較明顯:無毒,可復合,透明度比PE好,硬度稍差。質地柔軟,有PP的透明度,PE的柔軟性。
  CPP薄膜即流延聚丙烯薄膜cast polypropylene,也稱未拉伸聚丙烯薄膜,按用途不同可分為通用CPP(General CPP,簡稱GCPP)薄膜、鍍鋁級CPP(Metalize CPP,簡稱MCPP)薄膜和蒸煮級CPP(Retort CPP,簡稱RCPP)薄膜等。
  CPP薄膜的主要特性包括:
  與LLDPE、LDPE、HDPE、PET、PVG等其他薄膜相比,成本更低,產量更高。
  比PE薄膜挺度更高。
  水氣和異味阻隔性優良。
  多功能,可作為復合材料基膜。
  可進行金屬化處理。
  作為食品和商品包裝及外包裝,具有優良的演示性,可使產品在包裝下仍清晰可見。

  Tags:塑料包裝袋

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