PU Cast Unit for Printing Rollers | Haifeng

This polyurethane elastomer casting unit is specially built for polyurethane roller casting in the printing industry, widely suitable for high‑speed printing equipment such as offset printing, gravure printing, flexo printing, and UV printing. It can stably produce special accessories such as UV ink rollers and offset rollers, meeting the production requirements of wear resistance, ink corrosion resistance, high elasticity, and uniform ink transfer, effectively ensuring clear printing patterns, no ink leakage, and no scratches, while adapting to the efficient and stable operation of printing production lines. The machine features a 2A2B two‑component configuration with a dedicated color paste tank, plus 150/220L tank capacity options. The mixing head operates at 7,000‑11,000 r/min with dynamic metering accuracy of ≤±0.3% full range. Material temperature is precisely controlled: Tank A at 30‑80°C, and Tank B with dual‑zone capability for MOCA (90‑115°C) and BDO (25‑50°C), supporting flexible switching between the two chain extenders to balance high wear resistance and high resilience as needed. The vacuum defoaming system operates at ≤‑0.095MPa, ensuring bubble‑free, dense elastomer structures. The automatic circulation + air purge cleaning system prevents color cross‑contamination and reduces raw material waste, adapting to small‑batch, multi‑specification, and multi‑color roller flexible production.