Dope dyeing is widely adopted in chemical fiber and non‑woven industries. Market demands extend beyond polypropylene, covering coloring and functional demands of polyester, polyamide and modified polyolefin, raising higher requirements for masterbatch formula research. Polymer substrates differ in melting point, polarity and rheology, so masterbatch formulas cannot be shared directly.

Polypropylene has a relatively low melting point, and its formula focuses on carrier compatibility and fluidity. Polyester is spun at higher temperature, so pigments and additives need reliable heat resistance to prevent discoloration. Polyamide requires anti‑yellowing additives to reduce color shift during production and storage. Copying polypropylene masterbatch formulas for polyester or polyamide may result in poor dispersion, spinneret clogging and weakened mechanical properties.

Wet ultra‑fine grinding refines pigment powder and reduces agglomerates, supporting multi‑substrate masterbatch development. Manufacturers select suitable carriers, dispersants and functional additives for each substrate and adjust formulas for downstream equipment. For export orders, products shall meet local environmental standards and control extractables and volatile substances.

Customers shall provide substrate type, spinning parameters, application and testing requirements for customized masterbatch. Mass production can start after lab and pilot tests for formula optimization. Continuous technical exchange along the supply chain shortens development cycles, takes full advantage of dope dyeing, and promotes refined development of domestic industrial textiles.