Producing Pearlescent Color Masterbatch is less about flashy pigments and more about disciplined process control. In our facility, every lot begins with raw mica platelets inspected under laser diffraction; particle-size distribution is kept within ±2 µm to ensure consistent optical depth.
The platelets receive a titanium-dioxide coating in a fluidised bed. Thickness is monitored by in-line ellipsometry, while silane coupling agents are applied to bond mica to carrier resin. This step prevents platelet fracture during high-shear processing and preserves reflectance after 500 hours of Q-UV exposure.
Carrier selection follows application charts. For PET bottles, we use low-IV PETG; for PP automotive trim, a fractional-melt polypropylene. Each carrier is pre-dried to 0.02 % moisture to avoid streaking. Twin-screw compounding is carried out at 230 °C with gentle kneading elements to protect platelet integrity.
Quality gates include torque rheometry to confirm dispersion, spectrophotometer checks to keep ΔE under 0.3, and melt-flow verification to match customer resin specifications. Batches are vacuum-sealed in foil-lined bags with desiccant, ensuring shelf life of 18 months under standard storage.
By integrating tight particle control, carrier matching, and rigorous testing, the plant delivers Pearlescent Color Masterbatch that meets both aesthetic and mechanical demands without drama.