sink mark

Appearance requirements: Free of flash, crack, sink mark.

外观: 无毛边 、 开裂 、 凹痕等缺陷.

the generation processes of several typical injection molding defects, such as jetting and snake flow, sink mark and bubble, were directly observed and recorded. the methods of improving these defects were proposed. 2.

观察并记录了典型成型缺陷产生过程，包括喷射与蛇形流动、缩痕、气泡等，提出了解决这些成型缺陷的方法。

How much pressure? thicker section is it possible to occur sink mark?

压力有多大? 厚的区域是否有可能出现缩水的现象?

Specially, the major defects for the large-scale plastics such as automobile, instrument panel with the characteristic of long strip and large curved face are warp, sink mark and weld lines.

特别是诸如汽车保险杠、仪表盘这类长条形大曲面特征的大型注塑件，其主要的成型缺陷有翘曲变形较大，局部地方有缩痕和明显的熔接线。

cae analysis of the process of injection molding of the refracting plate for jetta car was made, the cause for the sink mark and trapped gas of the molded plate was analyzed and the way to avoid the defects was proposed.

对捷达轿车车灯上的折光板生产过程进行了CAE分析。分析了产生缩痕、气泡等缺陷的原因，提出了抑制缺陷的方法。