구운 플라스틱 원료를 사용하는 이유?

구운 플라스틱 원료를 사용하는 이유?

ABS, PC, PA6 types of plastic raw materials need to be baked, 하지만 PP, TPO, POM 유형은 베이킹할 필요가 없습니다.?
사출 성형 공정에서, the moisture content of the material must be in a relatively low range to ensure the normal injection molding and the normal physical properties of the product material. The moisture content of the injection material is too high. 첫 번째, the surface will appear bad appearance such as silver wire. 두번째, the water vapor in the material will cause bubbles and holes in the product, which affects the strength. 제삼, the most important thing is that the high water content will cause the material to decompose when it melts.

그러므로, the material must be dried before injection. 그만큼 moisture absorption rate of ABS, PC, PA6, PA66 and other materials is relatively large. The direct injection molding of the original packaging is not a big problem, but tens of kilograms of materials in the barrel cannot be done all at once. , In the process of several hours to ten hours, the moisture in the air will be absorbed by the material. 하지만, PP, TPE, and POM have relatively low moisture absorption rates, and they will absorb less moisture for a long time under ambient temperature and humidity. The moisture absorbed can be within the allowable range of the 사출 성형기 working process and has little effect on 사출 성형.
물론이야, a small impact does not mean that there is no impact, because although it does not absorb much moisture, it still absorbs water after all. In mass production, it is best to turn on the dryer for the stability of product quality when it has been produced continuously for many days.

에 대한 질문이 있는 경우 사출 성형 ,plz 부담없이 물어보세요 플라이스 팀,우리는 당신에게 최고의 서비스를 줄 것입니다!