Views:10 Author:Site Editor Publish Time: 2018-04-23 Origin:Site
Why do I have to granulation before injection?
What are the benefits of granulation?
Can not granulation, but after granulation product quality will be higher, for the following reasons:
1, from the particles, granulation particles evenly, crushing particles uneven, the material is not stable, gap size, melt glue density is not the same, some will increase the difficulty of the adjustment;
2, from the material impurity angle, the granulation material granulation when the filter after some impurities difficult to enter the material inside, relatively clean, crushing material is not;
3, from the color aspect, the color after granulation is relatively uniform, and with color powder or color masterbatch often appear chromatic aberration or dispersed uneven, it is difficult to clean hopper or barrel, and granulation more easily clean;
4, from the material quality, granulation will often add some plasticizer, diffusion agent, grafting, etc., so that the quality of the material is guaranteed;
5, from the material modification aspect, several kinds of materials in the case of a small number of grafting through the two-screw mixing and mixing more evenly, production is more stable.
The difference between granulation and injection: This is the two processes, granulation is a number of waste plastics through the melt extrusion, in the use of cutting machine cut into granular. Some additives can be added to improve the performance of waste plastics during granulation process.
Like toughening agents. Injection molding is done by melting the plastic material and then hitting the mold through the pressure to form a plastic product. Popular to say is: Injection molding is made of plastic products, and granulation is the plastic products made of "raw material"!