Double Plate Screen Changer

The double plate screen changer comprises a main body, two slide plates (each with two screens), a hydraulic station and other components, forming a complete filtering system. The two slides operate simultaneously: while one switches screens via hydraulic or mechanical drive, the other remains in operation. Additionally, its unique exhaust design allows screen changes without stopping the extruder or interrupting melt flow.

Advantages of the Double Plate Screen Changer:
1.No downtime during screen changes: Because of the unique exhaust design, screen changes can be performed without downtime or intterupting the melt flow.
2.Large filtration area: With two screens operating simultaneously, the filtration area is significantly larger compared to single plate screen changers.
3.High-efficiency filtration: The double plate screen changer enables continuous filtration of impurities in the melted polymer, ensuring uninterrupted production and boosting efficiency.
4.Strong durability: Constructed from alloy materials with nitriding treatment, it features a robust structure, high temperature resistance, and corrosion resistance, making it suitable for long-term high-load operation.
5.Strong adaptability: It is applicable to various plastic, rubber, and polymer processing technologies, and can handle melts with different viscosities and temperatures.
6.Easy operation: The automated design reduces labor costs.
Convenient maintenance: The modular design facilitates easier maintenance and replacement of parts.
7.Energy-saving and environmentally friendly: It reduces waste and lowers energy consumption.
8.High cost-effectiveness: Despite a higher initial investment, its high efficiency, durability, and low maintenance costs make it highly cost-effective in the long run.

Disadvantages of double plate screen changers:
Compared to single plate screen changers, it has a higher one-time investment. Additionally, it has a larger volume, requiring more installation space. During screen changes, the working pressure of the extruder needs to be reduced.

The double plate screen changer, with its unique double-plate and exhaust design, enables non-stop screen changes without interrupting the melt flow, meeting the filtration requirements of most hot-melt material production. It is widely used in extrusion production lines for raw materials such as rubber, resin, and polymers, including:​

◆ Blown film and cast film (bubble film, medical film, food packaging)​
◆ Sheets (foam, strapping, plastic cardboard)​
◆ Coatings (hot melt adhesives)​
◆ Pipes (corrugated pipes, gas pipes) and profiles​
◆ Compounding (master batches, fillers)​
◆ Wire and cable extrusion​
◆ Pipes (medical, industrial, irrigation)​
◆ Fibers (mono filaments)​
◆ Blow molding​
◆ Melt blown/spunbond non-woven fabrics​
◆ Granulation (strand and underwater granulation)​
◆ Plastic recycling