What is the reason for the unstable injection color of plastic products?
1. First of all, the temperature of the injection molding machine is checked. The color is unstable, which is related to the high and low temperature of the injection molding machine. When processing the plastic shell, it must be checked first.
2. The back pressure adjustment is too large, the production cycle is unstable, the production cycle is unstable, and the color may change when driving or stopping.
3. The mixer did not mix the toner with the raw materials according to the mixing process. For example, lack of time, inconsistency in the method or order of inputs can lead to uneven color. This is also one of the reasons why the color is unstable, so it is also important to check when processing plastic casings.
plastic bottle color
4. Due to the high humidity of the raw material, the viscosity inside has not spread, and the final color of the plastic processing will be unstable.
5. The number of nozzle materials reused is small, which has a greater impact on light-colored injection molded parts.
6. The variety of raw materials is inconsistent. Since the base color of each raw material is different, the color of the same toner injection sheet is different. Even from the same supplier, there may be some deviations in the background color depending on the batch number of raw materials. Therefore, for products that require color deviation, the background color of each raw material batch must be controlled to be consistent or not.
7. The quality of the toner is too poor, and the color is unstable if the toner is not heat-resistant or not suitable for raw materials.