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plastic extruder melt filter hydraulic screen changer

The plastic extruder melt filter plays a crucial role in the plastic processing industry. Melt filters are mainly used to remove impurities and particles from the melt to ensure the quality and stability of the final product. This article will delve into the application of plastic extruder melt filters, aiming to help readers better understand their principles, selection, and practical applications.

plastic extruder melt filter screen changer

The principle of melt filters The main principle of a melt filter is to capture impurities and particles in the melt through a filter screen. These impurities may originate from contamination in raw materials, production equipment, or processing. Melt filters typically consist of filter screens, filters, and brackets. When the melt passes through the filter, impurities are intercepted by the filter screen, while the pure melt continues to flow.

Selection of melt filters

When selecting a melt filter, the following factors need to be considered:

1. Filtering accuracy: Filtering accuracy refers to the minimum particle size that a filter can intercept. According to the requirements of the product and the different production processes, it is necessary to choose the appropriate filtration accuracy.

2. Filtering area: The filtering area determines the processing capacity of the filter. For high-yield production lines, it is necessary to choose filters with larger filtration areas.

3. Material: The material of the filter should match the properties of the melt to ensure good stability and corrosion resistance under high temperature and pressure.

4. Replacement and maintenance: Consider the replacement cycle and maintenance cost of filters to ensure the continuity and economy of the production line.

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The application of melt filters

Melt filters are widely used in various plastic extruders, such as production lines for pipes, sheets, films, and wires. The following are several typical application scenarios

1. Pipe production line: During the pipe production process, the melt filter can effectively remove impurities in the melt, ensuring that the inner and outer walls of the pipe are smooth and flawless. At the same time, the filter can also prevent impurities from entering the mold, extending the service life of the mold.

2. Board production line: The application of melt filters in the board production process can significantly improve the quality of the board. By removing impurities from the melt, the surface of the sheet can be made smoother and smoother, improving the aesthetics and practicality of the product.

3. Film production line: In the film production process, the role of the melt filter is particularly important. Due to the thin thickness of the film, higher requirements are placed on the purity of the melt. By installing a melt filter, the transparency, uniformity, and tensile strength of the film can be effectively improved.

4. Wire production line: The melt filter in wire production can remove particles and impurities from the melt, making the surface of the wire smoother and reducing burrs and fractures. At the same time, filters can also improve the mechanical properties and stability of the wire, meeting the needs of various application scenarios.

continuous screen changer

The melt filter of plastic extruder plays a crucial role in the plastic processing industry. By gaining a deeper understanding of its principle, selection, and practical application, we can better utilize the role of filters, improve product quality and production efficiency. Meanwhile, reasonable maintenance and upkeep are also key to ensuring the long-term stable operation of filters. I hope this article can provide useful references for readers in the application of plastic extruder melt filters.


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Batte is a professional screen changer manufacturer, supplying screen changer, especially screen changer for extrusion mould