Extrusion grade black masterbatch is produced using carbon black. Raw carbon black is very difficult to handle and dirty mixture, it is covered with dust, light weight, was fluffy. Unless a large-scale treatment, or it will dirty machines and workers, so that the working environment becomes dirty. Because of this, casting workers are generally selected in a resin carrier, that is, extrusion grade black masterbatch, Extrusion Grade Black Masterbatch to complete the pre-dispersion of carbon black. The resin carrier is clean, free flowing and easy to use. In addition, carbon black in addition to dirty, there is a feature that is difficult to disperse. If the injection mold directly to the raw carbon black melting, coloring effect will be very poor. No scattered carbon black stripes and spotted areas by the less colored place will be obvious next to the show. The standard plastic machine can not effectively disperse raw carbon black.
Carbon black is also difficult to disperse the performance also plagued the masterbatch producers. The use of single or Extrusion Grade Black Masterbatch double screw extruder to produce high-load extrusion grade black masterbatch has very poor dispersibility. When the end user mixes or molds these black masterbatches, their performance is slightly better than carbon black, but the effect is equally unsatisfactory. In order to achieve a stable high degree of dispersion, it is necessary to mix the carbon black, such as a mixture of FCM & BANBURY, using a high standard shear machine. With sufficient strength, these mixers can mix the carbon black and the base resin completely together.
The third factor in determining the quality of the extruded black masterbatch is rheology and fluidity. If a masterbatch itself has good dispersion, but it can not flow into the material to be molded, the production effect is not ideal. In general, Extrusion Grade Black Masterbatch the backing resin used to produce the masterbatch has a high rheology. In order to save costs, some masterbatch producers use reusable materials, scrap or recycled materials as resin carriers. The flowability of the masterbatch thus produced will be significantly reduced, and if the rheology is not good, the mold union will have trouble in the cycle time and appearance. It is noteworthy that, if the dispersion and rheology is not high, some end users will increase the dilution ratio to make up, but this approach will only increase the use of masterbatch costs. The masterbatch with the smallest dilution ratio can produce a uniform, good dispersion of black.
Compatibility determines the quality of the extruded black masterbatch of the fourth factor. If the masterbatch is produced Extrusion Grade Black Masterbatch using chips or recycled material, it may contain contaminants or other non-meltable polymers. This can cause some unpredictable, difficult to restrain the trouble, wasting the time and raw materials of the final consumer. At this time, you can use the backing resin to produce high-quality masterbatch, masterbatch in the melting process have a good compatibility. High quality masterbatches can be produced using LLDPE, LDPE, HDPE, PP, PS, SAN, PA and other materials. Extrusion Grade Black Masterbatch If the engineering grade and rigorous physical properties have been specified, the special polymeric masterbatch is available. Several international large-scale masterbatch producers are conducting research to produce the so-called "global universal" masterbatch. These masterbatches can be widely used and other raw materials, with good rheological, flexible application.
In today's international economy, international customers on the quality of masterbatch, raw material stability and other requirements is absolutely necessary, which is to determine the quality of extrusion black masterbatch the fifth factor. One of the main manifestations of stability is the steady ratio of carbon black. If the percentage of carbon black is fluctuating, then the number of melts to be melted is not the same, and it is not possible to produce the same color tone. Some final producers have reflected that the dilution ratio required is usually 5-8% difference, depending on how much Extrusion Grade Black Masterbatch material the masterbatch manufacturer has made in manufacturing. Obviously this is unacceptable. Of course, other factors such as the flow and dispersion of the injected melt should be consistent with the amount of feed per batch
The final factor in determining the quality of the extruded black masterbatch is the brightness of the color. There are various types of carbon black on the market can be used for coloring masterbatch, but all kinds of colors and prices are also very different. The large particles of carbon black have a lower color and a different background than the small particles of carbon black. Large particle masterbatches are suitable for use in applications such as garbage bags, but are not suitable Extrusion Grade Black Masterbatch for the production of those products that pay attention to aesthetic, such as television signs or places requiring UV protection such as agricultural films or external pipelines. For these products, only the use of higher prices of small particles of carbon black. In addition, low transparency is also a characteristic of small particles of carbon black.