Melt pump and screen changer for transparent nylon pelletizing production line

In transparent nylon pelletizing production lines, melt pumps and screen changers serve as core auxiliary equipment ensuring product transparency, stability, and yield rates. Working in tandem, they address two critical issues: stable melt pressure during conveyance and impurity filtration.

Core Functions of Melt Pumps

1. Stabilize melt pressure and flow rate, eliminating screw pulsation in the extruder

2. Enhance extrusion plasticization uniformity, reducing melt temperature fluctuations

3. Lower extruder load, improving production stability

Special Requirements for Melt Pumps in Transparent Nylon Pelletizing

1. Pump body material must be wear-resistant and corrosion-resistant (nylon melt contains additives; prevent metal ion leaching that contaminates the melt)

2. Employ high-precision gear meshing to minimize shear heating (prevent high-temperature degradation and yellowing of nylon, which affects transparency)

3. Temperature control accuracy of ±1°C to avoid melt discoloration caused by localized overheating

Core Functions of the Screen Changer

1. Filters impurities from the melt (e.g., raw material dust, scorched material, metal shavings)

2. Prevents impurities from entering the die and causing clogged nozzles, or remaining in finished pellets and affecting transparency

Special Requirements for Transparent Nylon Pelletizing Screen Changers

1. Employ dead-zone-free flow channel design to prevent melt stagnation and degradation

2. Select filtration precision based on product requirements: 80–120 mesh for standard transparent pellets, 150–200 mesh for high transparency demands

3. Prioritize hydraulic automatic screen changers to enable non-stop screen changes, avoiding melt degradation caused by downtime

Email: sale@meltpump.com

WhatsApp: +86 158 3833 1071

Any questions about our products, please feel free to contact us! We promise you high-end products and first-class service.Look forward to our cooperation!!!