修改的口模出口据称可以减少口模积料，包括一种方形陡出口、尖形陡出口、弧形过渡形出口、外扩台阶出口、内扩台阶出口、外展形出口(见图)。

Modified die exits that claim to decrease die buildup include a sharp square exit, sharp pointed exit, radiused exit, outward-stepped exit, inward-stepped exit, and outward-flared exit (see diagram).

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其原因包括在喂料区加热时间太短和在过渡区熔融太慢、混合不良、在机筒和口模中存在过多的热量损失。

Causes include heating too quickly in the feed zone, melting too slowly in the transition zone, insufficient mixing, and excessive heat loss in the adapters or die.

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挤出流道是挤出模模头的关键部分，对挤出流道的输送区、过渡区及成型区三个区段进行了面向CAE的功能划分。

The extrusion die channel is composed of three sections: transportation section, transition section and dicing section. The functions based on CAE of the three sections have been clarified.

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