How to Choose Master batches?

Color master batch, also known as Pigment Preparation, consists of three basic elements: a pigment or dye, a carrier, and an additive is a new type of colorant for polymer materials. master batches an aggregate obtained by homogeneously loading an extraordinary amount of pigment or dye into a resin. In layman's terms, master batches are highly concentrated pigment packages that are used in a wide range of industrial applications such as apparel, everyday plastics, and automotive parts.

The production technology of master batches is very demanding, and professional master batch companies generally use the wet process to produce master batches. Specifically, the pigments are thoroughly mixed with resin carriers and dispersants. And then mechanically processed to refine the pigments after they have been isolated from air and moisture. The treated granular master batch has excellent dispersibility and coloring power and can be widely used in polyethylene, nylon, PC, and other resin materials.

With the development of the plastics processing industry, especially the establishment of many joint ventures and the increase in coloring requirements for export products, color masterbatches are gradually taking over the dominant position in the industrial color processing field. Color masterbatch has many advantages compared to traditional dyes. Because the pigment must be refined during the production of color masterbatch to improve the dispersibility and coloring power of the pigment. Therefore, professional color masterbatches can be better dispersed in the product plastic after heating and melting. Pigments are exposed to air in the process of storage and use, which leads to water absorption and oxidation. The resin carrier can isolate the pigment from air and moisture. Therefore, PVC masterbatch can make the quality of pigment unchanged for a long time. What's more, the masterbatch particles are similar to the resin particles, so they will not stick to the container when mixing, and will not cause dust and thus affect the health of the operator.

In order to achieve the best production results, we need to pay attention to some details when choosing masterbatches. First, masterbatches made with a low melting point, high melt index resins are more adaptable to a variety of environments. A universal masterbatch with a certain resin (often PE with a low melting point) as a carrier can be used for coloring other resins than its carrier resin. Secondly, the color powder ratio of masterbatches is not the higher the better. The heat resistance rating of the special masterbatch is generally compatible with the plastic used for the product and can be used safely at normal temperatures. Different degrees of discoloration can be caused in the following cases: one is that the temperature is outside the normal range, and the other is that the downtime is too long. Therefore, producers should choose the right color masterbatch according to industrial production needs. Generally speaking, the amount of high concentration general-purpose masterbatches in injection molded products is generally 1%.