In daily life, we do not often have many plastics, but in fact there are hundreds of types of real plastics, and different materials have different names. Even the same material has different grades corresponding to each other. The main thing is that different plastic shrinkage ranges are different. The so-called plastic shrinkage rate refers to the percentage of the difference between the product size of the plastic part at the molding temperature and the size after it is taken out of the mold and cooled to room temperature.
The main factors affecting the shrinkage of plastics are the type of plastics, the molding conditions during injection, and the mold structure. Different polymer materials have different shrinkage rates. Secondly, the shrinkage of plastic also has a lot to do with the shape of the plastic part, the complexity of the internal structure, and the presence of inserts.
Secondly, different plastics have different elasticity. Some plastics can be used for strong demoulding, but some materials cannot. This is also due to the different mold structure caused by the plastic character. So we have to inquire the customer's product materials before quoting.