Melt filtering

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Plastic filtration is a process used to remove contaminants, such as impurities, gels or other unwanted particles, from molten plastics. In this process, the molten plastic is passed through a filter, which can be metal or plastic and can have different sizes and shapes of pores depending on the application.

Melt filtration is important in the plastic manufacturing process because contaminants in the molten plastic can affect the quality and performance of the final product. Contaminants can cause defects, reduce the strength and durability of the plastic or even cause machine failures.

Melt filtration is often used in the extrusion process, which makes a wide range of plastic products, such as pipes, sheets, films and profiles. In this process, the plastic is melted and pressed through a die to obtain the desired shape. The molten plastic is often filtered before it reaches the mould to remove any contaminants that could clog the mould or affect the final product.

Filtration of molten plastic can be done with different types of filters, such as sieve changers, continuous belt filters or candle filters. The choice of filter depends on the type of plastic being processed, the degree of contamination and the desired quality of the final product.

Melt filtration is an important step to ensure the quality and performance of plastic products and can help reduce waste and increase the efficiency of the production process.



Melt filtering at Plastima


In plastic extrusion, the right screen exchanger for filtering process materials can be the most important solution for your extrusion line; it can make the difference between profit and loss. We list below seven reasons why installing a continuous screen exchanger in a contaminated plastic extrusion line is a winning choice. Custom designing melt filtration equipment for thermoplastics that can meet the most specific requirements is not just a matter of technology; it involves strategy, production organisation and economic issues. Typically, a plastic extrusion line is designed and manufactured to produce plastic for various applications, such as film, sheet, compounding, wire and cable, tubing, profiles, blow film, blow moulding, housing, irrigation, pellets, recycling, industrial recycling, post-consumer recycling, tapes, technical articles and more. For questions about screen wipers, Plastima is always at your service.

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