It operates by plastic injecting, spitting, squeezing and welding for making a plastic shoulder for plastic tubes and aluminum-plastic tubes.
采用注塑、吐料、挤压成型、焊合的方式，可为铝塑复合管、塑料管注上塑料肩部。
Firstly an analysis is made on the molding faults in plastic injecting process and a discussion is given to the faults reasons and some measures.
对塑料注射成型中产生的缺陷进行了分析，对产生原因和预防措施进行了讨论。
The molding technology of three-way plastic tube with flexural core is analyzed and the molding faults in plastic injecting process are forecasted.
分析了带弯芯塑料三通管的注射成型工艺，并对成型过程出现的缺陷进行预测。
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