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1. Under sunlight, there are striped pigment bands in the product
This problem needs to be considered from two aspects of plastic physical and mechanical properties and plastic molding process:
1.1 The temperature of the injection molding equipment is not well controlled, and the color masterbatch cannot be fully mixed with the resin after entering the mixing chamber.
1.2 The injection molding machine does not have a certain back pressure, and the mixing effect of the screw is not good.
1.3 The dispersion of the color masterbatch is not good or the resin plasticization is not good.
The process can be adjusted as follows:. Slightly increase the temperature of the mixing chamber near the blanking port. 2. Apply a certain back pressure to the injection molding machine.
If the above debugging is still not good, it may be the dispersibility or matching problem of the color masterbatch and resin, which should be solved by contacting the color masterbatch manufacturer.
2. After using a certain color masterbatch, the product appears to be easier to break
This may be due to poor diffusion and mutual solubility caused by the poor quality of the dispersant or auxiliary agent selected by the manufacturer, which affects the physical and mechanical properties of the product.

3. The color is too dark (too light) after being used according to the proportion on the color master manual.
Although this problem is simple, there are many possibilities, specifically:
3.1. The color masterbatch has not been carefully tested, and the pigment is too small or too much
3.2. The measurement is inaccurate during use, and the phenomenon of random measurement by domestic enterprises, especially small and medium-sized enterprises, exists in large numbers
3.3. There is a problem with the matching of color masterbatch and resin. This may be due to improper selection of the color masterbatch carrier, or the manufacturer arbitrarily changing the resin variety
3.4. The temperature of the machine is improper, and the color masterbatch stays in the machine for too long
Processing procedure: firstly check whether the resin variety matches the color masterbatch and whether the measurement is accurate, and secondly adjust the temperature or speed of the machine. If there is still a problem, you should contact the color masterbatch manufacturer.

4. For the same color masterbatch, resin and formula, why are the colors of the products injected by different injection molding machines different?
This is often caused by the injection molding machine. Different injection molding machines have different mechanical states due to different manufacturing, use time or maintenance conditions, especially the difference in the degree of closeness between the heating element and the barrel, so that the dispersion state of the color masterbatch in the barrel is also different. phenomenon will appear.
5. After changing to another brand of resin, the color of the same color masterbatch and formula has changed. Why?
The density and melt index of different grades of resin will be different, so the performance of the resin will be different, and the compatibility with the color masterbatch will also be different, resulting in color change. Generally speaking, as long as the density and melt index are the same Large, then the color difference will not be too big, you can correct the color by adjusting the amount of color masterbatch.
6. Will the pigment migration of the masterbatch during storage affect the quality of the product?
Some masterbatches have a high pigment content (or dye), in which case it is normal for migration to occur. In particular, the color masterbatch added with dyes will cause serious migration. But this does not affect the quality of the product, because after the color masterbatch is injected into the product, the pigment is in a normal color concentration in the product.

7. Why some injection products have bad gloss?
There are several possibilities:
7.1. The nozzle temperature of the injection molding machine is too low
7.2. The mold finish of the injection molding machine is not good
7.3. Product molding cycle is too long
7.4. Too much titanium dioxide in the masterbatch
7.5. Poor dispersion of color masterbatch

8. After a period of time, some plastic products will fade.
The quality of the basic pigment used by the manufacturer is not good, and the phenomenon of drift occurs.

9. Why is ABS masterbatch particularly prone to color differences?
Different brands of ABS produced in various countries have large color differences. Even if the same brand of ABS, there may be color differences in each batch of batches. Of course, color differences will also occur after coloring with color masterbatch. This is caused by the characteristics of ABS, and there is no complete solution in the world. However, this chromatic aberration is generally not serious.
When using ABS masterbatch, users must pay attention to this characteristic of ABS.
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