A melt booster pump is a precision mechanical device designed for conveying, pressurizing, and metering high-temperature, high-viscosity melts such as plastics, rubber, and synthetic fiber polymer materials. It finds extensive application in plastic extrusion, synthetic fiber spinning, rubber processing, and related fields.
Its core principle involves a pair of intermeshing gears rotating within the pump chamber. This action draws melt from the inlet side into the chamber, where the volumetric changes created by gear meshing generate stable pressure. This enables high-pressure melt delivery and precise metering.
The outstanding advantage of melt pressure pumps lies in their applicability to high-temperature, high-pressure, and high-viscosity operating conditions. They effectively stabilize melt pressure, reduce flow pulsation, and enhance product forming precision—such as film thickness uniformity.
When integrated into extrusion systems, they effectively compensate for the extruder's inherent pressure limitation, meeting the demands of high-pressure forming processes. As such, they serve as critical equipment for improving product quality and production stability in polymer material processing.
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