Plastic extrusion system and melt metering pump

The main functions of incorporating melt metering pump into plastic extrusion systems include improving product quality, controlling flow, homogenizing the melt, reducing pulsation, reducing extruder load, improving production efficiency (Note: "improving product quality" is repeated in the translation and should be omitted for brevity), extending equipment life, reducing unit energy consumption, minimizing flow and temperature fluctuations, and increasing extrusion output.

Melt metering pump play a vital role in plastic extrusion processing, and their functions are mainly reflected in the following aspects:
Stabilizing pressure: Melt metering pump can provide stable melt pressure and prevent pressure fluctuations, which is the key to maintaining the stability of the extrusion process and product quality.
Flow control: By adjusting the speed of the melt metering pump, the flow rate of the melt can be accurately controlled to ensure the consistency of the extrusion process.
Homogenization of the melt: During the melt conveying process, the melt metering pump achieves shearing and mixing of the melt through the rotation of gears or screws, thereby improving the uniformity and stability of the melt.
Pulsation reduction: Reduce the pulsation of the melt flow velocity and improve the quality of the extruded product.
Reduced extruder load: Using a melt metering pump reduces pressure and temperature fluctuations at the feed end of the extruder, reducing its load.
Improved production efficiency: Melt metering pump help improve the production efficiency of the extruder by reducing the material residence time in the barrel and stabilizing the plasticization process.
Improved product quality: Melt metering pump can reduce the dimensional tolerance of extruded products, reduce scrap and waste rates, and enable ordinary extruders to produce high-precision products.
Extended equipment life: By reducing wear and overuse of the extruder, melt metering pump help extend the service life of the equipment.
Reduced unit energy consumption: Using a melt metering pump improves mixing quality and output, thereby reducing energy consumption per kilogram of processed material.
Minimized backflow and temperature fluctuations: The rotation and connection of the gears can seal the low-pressure cavity, reduce backflow, reduce processing temperature, and promote the establishment of higher output pressures.
Increased extrusion output: Adding a melt metering pump to the extrusion system can significantly increase product output.

In short, the melt metering pump plays an important role in the plastic extrusion system, which not only improves production efficiency and product quality, but also extends equipment life and contributes to energy conservation.