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食品吸塑包裝盒制作成型時尺寸的偏差

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食品吸塑包裝盒制作成型時尺寸的偏差

發布日期:2019-12-17 00:00 來源:http://monaromining.com 點擊:

  食品吸塑包裝盒廠家表明任何塑料制品都有一定的尺寸精度要求,制品成型后的實際尺寸與基本尺寸之間的誤差叫做制品的尺寸偏差。引起制品產生尺寸偏差的主要原因是來自塑料的成型收縮、成型零部件的制造偏差及其在使用過程中的磨損等三個方面①塑料的成型收縮。成型收縮引起制品產生尺寸偏差的原因:一是預定收縮率(設計計算成型零部件工作尺寸時所用的收縮率)與制品實際收縮率之間的誤差;二是成型過程中,收縮率可能在其最大值和最小值之間發生的波動。

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