1、Sticky membrane
Formation reasons：Mold surface finish is not good.
Solution：Increase mold surface finish.
Formation reasons：Material shrinkage is too high or too low.
Solution：Improve the shrinkage properties of materials.
Formation reasons：Pressure is too high.
Solution：Reduce the molding pressure appropriately.
Formation reasons：Die ejector rod is not parallel.
Solution：Check ejector lever balance.
2、Lack of material, air holes
Formation reasons：Insufficient pressure.
Solution：Increase pressure appropriately.
Formation reasons：Underexhaustion
Solution：Increase exhaust frequency.
Formation reasons：The mold temperature is too high or too low.
Solution：Adjust mold temperature.
Formation reasons：Material shortage.
Solution：Add Material.
Formation reasons：Pressing too fast or too slow.
Solution：Adjust the speed of die closing.
3、Warping, Distortion
Formation reasons：Too short holding time and inadequate assimilation.
Solution：Increase the holding time.
Formation reasons：Material shrinkage too high.
Solution：Change material shrinkage rate.
Formation reasons：Mold temperature too high.
Solution：Adjust mold temperature appropriately.
Formation reasons：No shape after the mold
Solution：After the mold, set the product until the temperature drops.
4、Charcoal
Formation reasons：There are dead corners in the mold.
Solution：Improve mold venting.
Formation reasons：Insufficient exhaust.
Solution：Increase exhaust frequency.
Formation reasons：Mold temperature too high.
Solution：Reduce mold temperature.
5、A crack
Formation reasons：Insufficient curing, improper mold temperature.
Solution：Increase curing time and adjust mold temperature.
Formation reasons：Material shrinkage is too high or too low.
Solution：Adjust shrinkage rate of material.
Formation reasons：Ejector lever ejection is not balanced.
Solution：Check that the ejector lever of the mold is parallel.
Formation reasons：Improper insert temperature.
Solution：Properly preheat before inserts.
Formation reasons：The mold surface is not smooth.
Solution：Increase mold surface finish.
6、Bubble
Formation reasons：Mold temperature is too low and curing is not sufficient.
Solution：Increase mold temperature, increase curing time.
Formation reasons：There is moisture in the material.
Solution：Check the moisture test of raw materials.
Formation reasons：Mold temperature is too high.
Solution：Reduce mold temperature.
7、White dot
Formation reasons：Mold closing progress is too slow.
Solution：Fast mold closing after feeding.
Formation reasons：The mold temperature is too high, and the material has been pre-cured.
Solution：Reduce mold temperature.
Formation reasons：Too much deflating time and frequency.
Solution：Fast exhaust after mold closing, reduce the number of exhaust.