A modified form of sprue gate is also used on underfeed moulds and runnerless moulds.

在点浇口式的或道也用到另一种式主道。

The molding method,process,and the equipment of thermoset runnerless injection molding have been discussed in this paper.

论述道热固性塑料注射成型的方法、工艺、设备和设计方面的问题。