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Analysis of the causes of welding joints in plastic products

by:SMART DRAGON     2020-05-22

when molten plastics meet in multiple strands in the cavity due to the hole of the insert, the area where the flow rate is inconsistent, and the area where the filling material flow is interrupted, linear welding joints are generated due to incomplete fusion. In addition, welding joints will also be generated at the gate injection filling, and the strength at the welding joints is very poor. The main reasons are analyzed as follows.

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