0.2-2.0mm pp sheet extruder melt gear pump

Regarding the melt pump of 0.2-2.0mm polypropylene sheet extruder, the following is some detailed information:

1、 Overview

Melt gear pump, also known as melt metering pump or extrusion pump, is a power equipment used to transport high-temperature and high viscosity polymer melt. It adopts a unique volumetric design, which can provide stable melt pressure and flow rate for the extruder without being affected by pressure, temperature, and viscosity changes. In polypropylene sheet extruders, the melt gear pump is usually installed between the extruder outlet and the die head, playing a role in boosting, stabilizing, and metering.

2、 Characteristics and advantages

Stability: The melt gear pump can stabilize the melt pressure and flow rate, which is superior to various types of extruders. This helps to reduce the dimensional tolerances of extruded products and improve product quality.

Adaptability: Suitable for conveying high-temperature and high viscosity polymer melts, including thermoplastic materials such as polypropylene. Energy saving: Melt gear pumps can effectively reduce energy consumption by reducing cylinder pressure, minimizing friction between screws and cylinders, and reducing the load on gearbox thrust bearings.

Flexibility: Multiple configurations can be made according to production needs, such as being used in series with single screw or co rotating twin-screw extruders, or feeding a single melt pump simultaneously with multiple small and medium-sized extruders.

3、 Technical parameters (taking general range as an example)

Viscosity of conveying medium: The viscosity range suitable for materials such as polypropylene is usually between 1 and 40000 Pa • s.

Suction pressure: 0-30MPa, depending on the design of the pump and the requirements of the extruder.

Output pressure: 0-40MPa, ensuring stable delivery of the melt to the mold head.

Operating temperature: ≤ 350 ℃, suitable for processing temperature of thermoplastic materials such as polypropylene.

4、 Selection and Application

When selecting a melt gear pump for a 0.2-2.0mm polypropylene sheet extruder, the following factors need to be considered:

Model and specifications of extruder: Ensure that the parameters of the melt gear pump match those of the extruder.

Production demand: Select based on factors such as product size tolerance, output, and raw material cost.

Material and sealing structure of the pump: Choose corrosion-resistant, high-temperature resistant materials and reliable sealing structures to ensure the long-term stable operation of the pump. The application of melt gear pump in polypropylene sheet extruder is very extensive, which can significantly improve the efficiency and product quality of the production line. Meanwhile, with the continuous advancement of technology and the continuous development of the market, the performance and reliability of melt gear pumps are also constantly improving.

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