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聚乙烯的純度會影響纏繞膜的質量嗎

作者：閱讀量：发布日期：2021/9/24 9:02:01

信息摘要：

纏繞膜的質量與原料聚乙烯的純度和質量有關。可以說聚乙烯原料的質量決定了纏繞膜的質量。與其他類型的纏繞膜相比，纏繞膜具有更強的韌性和力學性能，這使得其配方獨特。

一般缠绕膜的配方是纯聚乙烯、聚乙烯加母料、聚乙烯加再生料、聚乙烯加再生料、母料。不同的公式有不同的属性。纏繞膜的質量與聚乙烯的純度有關，好的纏繞膜完全透明，成膜均勻，手感好，牽拉過程中無噪音，回縮應力相對均勻，呈現有規律的增減，符合聚乙烯的物理性能。

另一种由回收材料和滑石粉(碳酸钙)制成。这个缠绕膜完全不透明，最便宜，从远处看像纸板。但是这个缠绕膜很软，没有拉伸性，拉的时候会断裂，一点都不结实(主要是因为再生的聚乙烯和碳酸钙分子没有结合，导致分子间间距过大)。但是这种缠绕膜的外观很容易让人迷惑，所以在购买之前有必要测试一下它的性能。

一般缠绕膜的质量完全取决于聚乙烯的纯度。聚乙烯含量越高，质量越好。纯聚乙烯价格较贵，属于期货，波动较大，这也是薄膜价格高的原因。

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