A UPVC (Unplasticized Polyvinyl Chloride) injection molding machine is a specialized industrial press designed to melt and inject rigid PVC material into closed molds. It typically features a clamping force of 150 to 400 tons, specialized corrosion-resistant bimetallic screws, and precise temperature controls to prevent material degradation.
Key Features and Design
Specialized Screw and Barrel: Built with a low-compression ratio, high-torque screw to handle the high viscosity and thermal sensitivity of UPVC without overheating.
Corrosion Resistance: Components touching the melt use special corrosion-resistant alloys since degraded PVC releases hydrochloric acid.
Precise Temperature Control: Multiple PID heating and cooling zones maintain a stable melt temperature (typically 185 Degree C?205 Degree C).
Core Pulling Integration: Equipped with built-in hydraulic core pullers (1 to 3+ sets) required for molding complex internal threads or shapes in pipe fittings.
Advanced Hydraulics/Servo Drive: Delivers stable, proportional back pressure and smooth clamping action for high-volume, defect-free production.
