Common phenomena and treatment methods of injection molding production caused by Color Masterbatch
Issuing time:2022-03-23 13:49
During the production process, the color masterbatch is mechanically processed to refine the pigment, fully mix the pigment with resin carrier and dispersant, so as to isolate the pigment from air and moisture, so as to enhance the weather resistance of the pigment, improve the dispersion and coloring power of the pigment, and make the hue bright.
Common phenomena in injection molding production caused by Color Masterbatch:
A. Causes of uneven color: high cylinder temperature, long molding cycle and poor resin compatibility.
Treatment method: reduce the temperature of the feed cylinder and use a carrier with good compatibility.
B. Reasons for poor gloss: low temperature outside the nozzle, long molding cycle, more titanium dioxide in the color masterbatch and poor pigment dispersion in the color masterbatch.
Treatment method: increase the nozzle temperature and shorten the forming cycle. Reduce titanium dioxide in color masterbatch and improve pigment dispersion in color masterbatch.
Color Masterbatch, also known as color species, is an aggregate made by uniformly attaching super constant pigments or dyes to resin.
Several benefits of using color masterbatch:
1. It is conducive to maintaining the chemical stability and color stability of pigments;
2. Make pigments have better dispersibility in plastics;
3. Protect the health of operators;
4. Simple process and easy color conversion;
5. The environment is clean and does not contaminate the utensils;
6. Save time and raw materials.
Due to the direct contact of pigments with air during storage and use, moisture absorption, oxidation, agglomeration and other phenomena will occur. Direct use will appear color spots on the surface of plastic products, which will darken the hue and fade easily, and cause dust during mixing, affecting the health of operators. In the production process, the color masterbatch is mechanically processed to refine the pigment, fully mix the pigment with resin carrier and dispersant, so as to isolate the pigment from air and moisture, so as to enhance the weather resistance of the pigment, improve the dispersion and coloring power of the pigment, and have a bright hue. Because the shape of color masterbatch is similar to that of resin particles, it is more convenient and accurate in measurement, and will not adhere to the container during mixing. Therefore, the time for cleaning the container and machine and the raw materials used for cleaning the machine are saved.
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