Processing of plastic products -- Method of eliminating past
1、 Causes of paste spots
Insufficient air overflow
2、 Related knowledge
1. The residual gas in the mould is compressed into a high temperature state, which makes the material scorch.
2. Insufficient gas overflow and air sealing will result in weld marks.
3. Insufficient gas exhaust will also cause material shortage of products (refer to the section of material shortage)
1 instant: reduce the shooting speed
2 short term: add air overflow slot and additional air overflow pin
3 long term: the mold uses the insert structure which is easy to overflow air