Advantages of melt metering pump:

Stabilize output pressure: It can effectively reduce the unstable material output and pressure pulsation caused by extruder parameters, and ensure that the melt flow is accurately and stably fed into the extruder head.

Improve product quality: minimize the dimensional tolerance of extruded products, reduce waste and scrap rate, so that ordinary extruders can also produce high-precision products.

Improve extrusion output: Reduce the pressure requirement on the screw, and change the pressure from the screw to the die head to the melt pump to the die head, the screw can be extruded at high speed and high efficiency, and improve the output and quality of the products.

Reduce unit energy consumption: when used in tandem with single-screw or isotropic twin-screw extruder, it can significantly reduce the energy consumption per kilogram of material processed, and generally can be reduced by about twenty-five percent.

Extend the life of the machine: after using the melt pump, the pressure inside the screw barrel of the extruder is reduced, which can greatly reduce the wear and tear between the screw and the screw barrel, reduce the load on the thrust bearing of the gear box, and extend the life of the extruder.

Strong adaptability: it can handle melts with different viscosity and temperature, and is widely used in the fields of meltblown fabrics, non-woven fabrics, plastics, resins, and extrusion molding of rubber products.

Linear extrusion characteristics: It is convenient for upstream and downstream equipment to coordinate their work, and realize the whole extrusion process with online monitoring and feedback control.

Disadvantages of melt metering pump:

High material requirements: As the melt metering pump in the high temperature, high pressure conditions of continuous work, and conveying the plastic melt generally has a high viscosity and a certain degree of corrosiveness, so the melt metering pump material requirements are very high, increasing the manufacturing cost.

Lubrication and sealing problems are complex: in order to prevent contamination of the plastic melt, melt metering pumps can not use general lubricant or grease lubrication, but with the help of transporting the plastic melt for self-lubrication. At the same time, its sealing problems are also more complex, requiring the use of special sealing structure.

Troubleshooting difficulty: the melt pump problem for the workshop's safe production has brought a great deal of hidden danger, and troubleshooting difficulty, the need for professional technicians to maintain and overhaul.

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