Melt pumps are widely used in the processing of high-polymer materials such as plastics, synthetic fibers, and rubber, including applications like plastic product manufacturing, synthetic fiber spinning, and rubber calendering. In these fields, melt pumps serve as one of the core pieces of equipment, directly impacting product quality and production stability. Their core function is to achieve stable melt transportation and pressure control through gear rotation, thereby addressing production issues caused by pressure fluctuations and temperature inconsistencies during the extrusion process.
Pressure Stability: Eliminates pressure fluctuations in screw extruders (reducing fluctuations from ±10% to ±1%), enhancing product dimensional accuracy.
Flow Precision: Achieves a linear relationship between melt flow rate and pump speed through variable frequency speed control (error <1%), enabling precise metering.
Temperature Control: Reduces melt residence time within the extruder, minimizes temperature fluctuations (typically within ±2°C), and prevents material degradation.
Energy Savings: Lowers extruder backpressure to reduce motor power consumption (energy savings of 10–20%).
Multi-machine coordination: Supports multiple extruders feeding a single melt pump in parallel, enabling low-cost large-scale production (e.g., wide-width films, sheets).
1. Food packaging film (BOPP/BOPET)
Challenge: Must meet FDA standards; the melt pump must be made of 316L stainless steel with a surface finish of Ra<0.4μm to prevent melt adhesion.
Configuration: Twin-screw extruder + melt pump + static mixer + die head to produce high-transparency, low-crystallinity film.
2. Medical Catheters (TPU/PVC)
Challenge: Catheter wall thickness must be controlled between 0.1–0.5mm, and the melt pump must provide ultra-high precision (±0.005mm) and low shear (to prevent melt degradation).
Configuration: Micro melt pump (flow rate 0.1–10cc/rev) + precision extrusion die head, supporting multi-cavity catheter co-extrusion.
3. 3D printing filament (PLA/ABS)
Challenge: The filament diameter must be controlled within ±0.02 mm, and the melt pump must synchronize speed with the drawing machine, with a response time <50 ms.
Configuration: Single-screw extruder + melt pump + water cooling tank + traction machine, supporting high-speed filament production (speed >50 m/min).
Flow Rate Range: Selected based on extruder output (e.g., 10–5000 kg/h).
Pressure Rating: Standard type (25–50 MPa) or high-pressure type (>50 MPa, for rubber/seal strips).
Temperature Range: Standard type (0–300°C) or high-temperature type (300–450°C, for carbon fiber/PEEK).
Material Selection: Tool steel (H13/D2) for general-purpose plastics, Hastelloy (C-276) for corrosive materials (e.g., PVC).
Email: sale@meltpump.com
WhatsApp: +86 158 3833 1071
