(1) Use colored masterbatch injection products, injection molding machine is preferably a screw, otherwise due to the plasticizing, mixing caused by poor uneven coloring.
(2) to improve extrusion back pressure, in order to improve the mixing effect of the screw, you can make a more uniform diffusion masterbatch.
(3) There are many stately, elegant, and some, such as advanced color melamine color, flashing colors, etc., must in order to show its effect in the mold very bright conditions.
(4) During the operation, if found masterbatch adhere to the hopper wall This is due to static electricity, and can be ground hopper to eliminate static electricity and the process does not cause problems.
2. Equipment Requirements
The application of masterbatch, in the mold of ribs or openings, etc. prone to confusion caused by the flow of non-uniform dispersion, so mold design should be avoided.
When the injection molding, injection slow, high back pressure is good dispersion. In order to disperse evenly in front of the screw to a static mixer is also very effective equipment improvements.
3. The use of masterbatch
(1) masterbatch stored for a period of time will absorb moisture, especially PET, ABS, PA, PC and so it is according to the same qualities of grain drying processes and meet water requirements.
(2) to achieve the desired color masterbatch mixed colors must be very careful, and often change color and shade may occur.
(3) masterbatch and other additives will react, when used to pay attention.
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