prepress

In the compression moulding technology, preheat and prepressing procedures are added to improve the flowability of the bond and physical and mechanical properties of the product.

在缩模塑工艺中，增加预热、预工序，提高粘合剂流动性和产品物理机械性能。

The main factor of spring back density is prepressing pressure, next are compression time and compression number of times.The effect of moisture content was not significant.

回弹后影响子主力，其次加时间和缩次数，而含水率对板坯回弹影响不明显。