jackymechanical

What are the reasons for the unstable color of injection molded products?
Nowadays, the application of plastic shells has been widely used. In our daily life, we are very common, such as: electrical shells, as well as our usual washbasins, are all plastic, but when the plastic is processed, the color is not Stability is a common problem.
1. First of all, the temperature of the injection molding machine should be checked. The color is unstable, which is related to the high and low temperature of the injection molding machine. Therefore, when the plastic shell is processed, it must be checked first.
2. Sometimes the back pressure adjustment is too large, the production cycle is unstable, the production cycle is unstable, and the color will change when it is switched on and off.
3. The blender did not mix the toner and the raw materials according to the mixing process. For example, insufficient time, inconsistent feeding methods or inconsistent feeding order caused uneven color, which is also one of the reasons for color instability. Therefore, in processing It is also important to check the plastic case.
4. Because the humidity of the raw materials is too high, the viscosity inside has not spread, and finally the color of plastic processing will become unstable.
5. The recycle amount of nozzle material is often less, which has a greater impact on light-colored injection molded parts.
6. The grades of raw materials are inconsistent. Because the background color of each raw material is different, the color of the same toner injection molded part will be different. Sometimes the same supplier, with different batch numbers of raw materials, will have some deviations in the background color. Therefore, for products with high color deviation, it is even necessary to control whether the background color of each batch of incoming materials is consistent.
7. Toner quality is too poor, not heat-resistant, or using the wrong toner that is not suitable for the raw material will make the color unstable.