Polypropylene masterbatch acts as core raw material for dope‑dyeing of polypropylene fiber. Using polypropylene as carrier resin, it is compounded with pigments, dispersants and functional auxiliaries through mixing, wet‑grinding, extrusion and pelletizing. Blended into polypropylene melt during spinning, polypropylene masterbatch produces colored polypropylene fiber directly without post‑dyeing, and fits manufacturing of polypropylene filament, staple fiber and non‑woven fabrics.

Dispersion performance is a key indicator for Polypropylene masterbatch. Poor pigment dispersion may cause spinneret blockage, rapid filter‑pressure rise, yarn breakage and crystal spots on fiber surface. Polypropylene masterbatch for super‑fine denier fiber requires finer pigment treatment to guarantee stable spinning under fine‑denier conditions. Besides basic coloration, compound formulas bring extra properties such as anti‑aging and hydrophilicity for geotextile, hygiene and automotive‑interior applications.

Spinning equipment and processes set varied requirements on thermal stability, melt fluidity and carrier compatibility of Polypropylene masterbatch. High‑speed non‑woven spinning and conventional filament spinning differ in processing temperature and shear condition, so formulas of polypropylene masterbatch shall be adjusted to reduce downstream production loss.

Yancheng Ruize color masterbatch Co., LTD is equipped with twin‑screw extrusion lines and wet‑grinding coating production lines. Its wet ultra‑fine grinding & coating technology improves pigment dispersion of Polypropylene masterbatch, which can adapt to 0.25D super‑fine denier spinning. Formulas of polypropylene masterbatch can be adjusted according to customer spinning equipment, substrate and let‑down ratio. Both color‑matching sampling and mass delivery are available. Internal tests on shade, heat resistance and dispersion are carried out. The company supplies polypropylene masterbatch and functional masterbatch solutions for domestic and overseas chemical‑fiber and non‑woven manufacturers.