In general, there are two kinds of plastic coloring agent, one is the use of color powder, the other is the use of the color mother, the color powder and the color mother are now the universal plastic special pigment.
Color powder is the color of powder, color masterbatch is simply to understand the color of the particles, the particles here is a carrier, is to make the color attached to the carrier, and then to match the plastic to achieve the purpose of color.
1) to improve the environmental pollution caused by the flying color of the powder, it is easy to replace the color in the process of use, and it is not necessary to carry out the special cleaning of the hopper of the extruder。
爱乐透彩票2) the pertinence is strong and the color matching is correct。 In the manufacturing process of the chromophore manufacturing plant, the pigment (dye), auxiliaries, processing equipment and processing technology are reasonably selected for the performance of the suitable resin。 The chromatic aberration that may be brought about by different batch of color powder in the production process is corrected and colored in time, so the phase can be checked again。 Therefore, the phase can be guaranteed。 The color of the same brand is kept relatively stable in the two batches。
3) compared with the batch resin dry dyeing and granulation, the use of the color parent can reduce the aging of the resin property caused by the two processing of the plastic products, which is beneficial to the improvement of the life of the plastic products.
The biggest advantage of using color masterbatch is that during the processing, pigments are fully mixed with carrier resin under the action of additives。 When used, the resin is placed in a certain proportion in the resin to be processed, and the color master quickly enters the role and identifies the family with the resin。 Affinity - compatibility is obviously better than coloring, so it is better for manufacturers of film and spinning products。
Of course, color masterbatch coloring also has its limitations. Due to the small amount of addition, the processing time of plastic products is short and the length to diameter ratio of the extruder screw is limited, and the dispersivity of the color parent is often inferior to that of the color powder. More than one manufacturing process, dyeing costs will also be higher than toner coloring. When the performance of the carrier in the color parent is different from that of the required coloring resin, the surface of the plastic products often appears undispersed, color spots and patterns, so the use of the color parent is limited by its compatibility and dispersion.