The extruder melt pump is a precision volumetric gear device installed between the extruder and the die head. The core relies on the meshing rotation of high-precision gears to complete the melt conveying, and is a key supporting component for achieving stable feeding in the field of polymer material processing. It differs from the plasticizing function of extruders, specializing in the pressurization, stabilization, and precise measurement of melts, and is suitable for the processing scenarios of most high viscosity polymers such as plastics, synthetic fibers, and biodegradable materials.
It specifically solves several core pain points of traditional production relying solely on extruders: firstly, it eliminates the inherent pressure pulsation caused by screw rotation, solves the flow fluctuations caused by filter blockage and uneven material mixing, and fundamentally avoids the problems of excessive thickness tolerance and multiple surface defects in films, sheets, and pipes; The second is to take over the pressure building task, so that the extruder does not have to be forced to increase the speed in order to increase the pressure, solving the problem of insufficient extruder force and limited output under high viscosity and high molding conditions; The third is to alleviate the burden of long-term high back pressure operation of the extruder and reduce the risk of thermal sensitive material degradation caused by excessive shear.
In actual production, it can bring considerable comprehensive benefits: not only can it improve the dimensional accuracy of products to the top level in the industry, significantly reduce the scrap rate, but it can also allow the extruder to focus on plasticizing and mixing, which can increase the production capacity of the entire production line by up to 50%. At the same time, the total energy consumption of the system can be reduced by 10% -25%, and the service life of screws, filters, and molds can be extended. In most scenarios, the equipment investment cost can be recovered in less than a year, making it a standard component for high-end precision extrusion production.
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