Do you understand the true value of adding a melt pump to an extruder?
Many extrusion processing plants are conflicted: is it necessary to install a melt pump on the extruder? Many people think it's just stabilizing pressure, but in fact, it's crucial for improving the entire production line.
Core function of melt pump: metering and conveying+stabilizing pressure, equivalent to the "melt stabilizing metering station" of extrusion line
The real value of installing a melt pump
Stabilize melt pressure and reduce pressure fluctuations
Improve common problems such as uneven film thickness, profile size deviation, and uneven fiber bundle thickness
Accurate and constant flow, improving product consistency
The independent forced measurement of the melt pump is not affected by the speed of the extrusion screw or material fluctuations, greatly improving batch stability
Share the load of the extruder and protect the screw barrel
The extruder is responsible for plasticization, while the melt pump is responsible for pressurized transportation. Reduce the back pressure of the host, minimize shear overheating, and lower the risk of material degradation
Expand the process window and enhance the adaptability of raw materials
When producing recycled materials, high filling materials, and high viscosity materials, the process can be better adjusted
Save raw materials and reduce defect rates
Controllable product tolerances, reduced waste, and long-term production savings in raw material costs
Has the potential for a slight increase in production
After the process is stable, the production line speed can be moderately increased within the allowable range of the equipment
Objectively recognize limitations and make rational choices
The melt pump is a supporting equipment and cannot compensate for the inherent problem of poor plasticization in extruders
Increase equipment investment in the early stage, requiring supporting drivers and temperature control
Operating conditions with extremely high viscosity and a large amount of coarse impurities require the use of a screen changer at the front end for effective filtration
Which production lines are suitable for installation?
Film production line | BOPET, BOPP, CPP, optical film
Chemical fiber spinning, industrial silk extrusion line
Plate, sheet, precision profile extrusion
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