Make analyses of selecting nozzle and designing sprue runner and gate and etc.

对喷嘴选择，直、横浇道及浇口设计等进行了分析。

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The feeding head shape of a die and a streamlined sprue runner were designed after an analysis on the cross sectional shape and the extrusion forming ability of PA66 material.

通过对异型材截面形状及原材料挤出成型性能分析，设计了正确的口模形状及合理的流线形流道；

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Attention was paid on how to lower the production costs in the processing of thermosetting plastics, which covered the fiber orientation, removal of burr and sprue runner material loss.

由于纤维取向、去除飞边和流道料损失等是热固性塑料加工中影响成本的主要问题，故着重介绍了降低上述费用的办法。

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