The traditional production method of color masterbatch

1. The traditional production method of color masterbatch

Most color masterbatches are mainly made of powdered pigments. The pigments required for a single color are fully blended with powdered plastic raw materials through dispersing aids, such as wax, and then dispersed in a twin-screw extruder, uniformly Distributed in plastic raw materials. Note: The effect of dispersion in the twin-screw extruder in the laboratory is not necessarily consistent with the actual situation on the production line, so it is necessary to check the color value at the beginning of production and make necessary adjustments. the correction.

2. Produce color masterbatch with one component

The production of single-color color masterbatch is completed in 2 steps, first is the production of single-component, and then the production of color masterbatch. Dispersing the pigment in the plastic raw material at an allowable concentration is called a single-component method. At present, the concentration is as high as 40-50% Both organic pigments and inorganic pigments with a concentration of 75% can be dispersed into plastics by extrusion to obtain a good dispersion effect.

Note: Good dispersion quality means that the pigment particles in the plastic are very fine and can obtain the best possible color penetration ability. On the other hand, no pigment agglomeration larger than 5 microns is allowed to avoid the formation of color spots. Single component in the laboratory The color adjustment and sampling and the production of masterbatch are all done by single-screw extruder. Because the pigment has been dispersed, different single components only need to be melted and mixed in the single-screw extruder. Due to the laboratory and The dispersion quality in actual production is the same, and the actual transferability of the color value of raw materials obtained in the laboratory can be guaranteed in actual production.

3. Cost factors of extrusion production

The production cost of extrusion depends on the type and size of the machine used and the size of the processing batch.