How Much Relationship Between Injection Temperature And Color Deviation ?
- May 25, 2018 -

The color of injection molded parts can be changed by changing the temperature of the melted plastic. Usually the temperature difference of about 10 °C, you can see the color deviation of injection molded parts.

Therefore, when the color of the injection molded part does not have a large deviation from the sample, it should be solved by adjusting the temperature. Within the range of the normal injection molding temperature of the raw material, 5 to 15°C is adjusted up and down, and a significant effect of improving the color deviation has been received.

In most cases, the temperature rises, the dark parts will lighten, and the white parts will turn yellow. Conversely, the temperature drops darker and the white is whiter. However, there are also individual colors that are opposite or elusive. For example, fluorescent colors are more difficult to fathom.


If the color deviation is too large, it is difficult to solve the problem by adjusting the temperature. At this time, it is not too late to notify the color matching staff to perform the color adjustment. This can reduce the number of toning times. However, when adjusting the color, it is important to adjust the injection temperature required for the production of the product. Otherwise, color deviation may occur when the production and the color temperature are different.
Due to the large influence of temperature on color, temperature must be controlled during production. Once the color has been determined, the temperature range should remain within plus or minus 5 degrees. Light-colored materials that are affected by temperature, even the temperature and time of the dipping material, should not be too high or too long. Otherwise, the color of the material will be unstable. It is a fluorescent color and purple. . Therefore, if it is necessary to take a long time to solve the water vapor problem, it is best to finish the color and then go to the color.


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