(1) The black masterbatch is replaced with the same resin as the product;
(2) less carrier resin in black masterbatch;
3 (3) Increase the concentration of color masterbatch; the dispersibility and coloring power of the colorant should be good. When the colorant is not uniformly dispersed, it will affect the appearance of the product;
When the ocher masterbatch has poor tinting power, it will increase the amount of colorant and increase the material cost. The dispersibility and tinting power of the same colorant in different resins are not the same, so you should pay attention to this when selecting a colorant.
Methods to improve the quality of black mother
First, the covering power of carbon black should be strong so that it can cover the color of the lower layer in the production process. The color of the black mother is more uniform and bright.
Second, the resin for producing color masterbatch has better fluidity and rheology. The color of such masterbatch particles will be uniform, and generally no major problems will occur in production.
Third, it is the machine for extruding the black masterbatch. Generally speaking, the use of a high-level shear blender is better than the black masterbatch produced by a single or double screw extruder because the former can make carbon black Good contact with resin.