How can white masterbatch not fade with the stripes of pigment products under the irradiation of sunlight? This problem should be considered from the physical and mechanical properties of plastics and plastic injection molding equipment: (1) The temperature is not controlled, and the white masterbatch cannot be fully mixed with the resin when it enters the mixing chamber. (2) The injection molding machine has no certain pressure, the mixing effect of the screw is not good, and the storage capacity of the barrel is increased. (3) Poor dispersion or poor plasticization of white masterbatch.
