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塑料件縮水問題影響“超聲波焊接”效果

返回列表 來源：发布日期： 2021.11.23

有时在进行超声波焊接时发现塑料件有缩水的情况，经了解是由于塑料件在设计时没有注意，开模之后才发现问题，但在接下来焊接的过程中才会知道塑料件缩水的影响。今天靈科超聲波就来聊聊这一问题。

什么叫缩水？靈科超聲波先给大家讲一讲。缩水，缩痕或凹痕就是指塑料件成品表面上的凹陷不良问题，呈沟壑状或小凹陷状，在注塑时发生概率较大，也较难解决。缩水导致塑料件表面出现凹陷、不匀称，较为严重地影响外型完整度。一些较明显的缩水问题无法通过表面处理来掩盖，并且越明亮的表面处理还会将问题突出。

生活中的大件産品如洗衣機、電冰箱和電腦等，往往在外觀上有著更高的要求，因爲顧客不會喜歡表面有凹陷、不平整的産品。而不直接面向顧客的産品，即時顧客沒有第一時間看到産品，也會在檢查時發現問題，從而影響了産品的滿意度。

縮水的塑料件其實就是塑料件表面不夠堅硬，難以抵抗內部收縮拉力，從而導致表面材料向內移動，産生縮水情況。而超聲波焊接是要通過高速摩擦生熱，利用瞬間的溫度熔化塑料件焊線完成焊接的，若是塑料件有縮水問題，會導致塑料件的焊線難以設計規劃，從而影響到超聲波焊接效果。

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塑料件縮水問題影響“超聲波焊接”效果

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