Melt Filter – Precise Filtration for Granule and Extruder Lines
The melt filter cleans the molten plastic coming out of the granule extruder by separating microscopic dirt particles and other foreign substances that could damage the cutting head. It is manufactured entirely from steel using state-of-the-art methods to withstand harsh working conditions.
An optional pressure sensor provides both audible and visual warnings to the operator if the filter is full. Production is carried out in the diameter range of Ø250 mm – Ø500 mm, suitable for the granule extruder capacity.
The filter has 4 cartridge resistors. Its hard surface welded structure has a hardness value of 58–60 HRC. The ceramic coated outer surface plate is supported by a resistor system. Thanks to its easy-to-use control panel and hydraulic unit, it provides practical and safe operation.
Melt Filter – Advanced Filtration and Process Protection for Extrusion Lines
The melt filter is a critical process component designed to purify molten plastic exiting the granule extruder by removing microscopic contaminants, unmelted particles, paper residues, metal traces, and other foreign materials that may negatively affect product quality or damage the cutting head and downstream equipment.
Manufactured entirely from high-strength steel using advanced machining and welding techniques, the melt filter is engineered to operate reliably under high temperature and pressure conditions typical of continuous extrusion processes. Its robust construction ensures dimensional stability and long service life even in demanding recycling applications.
To enhance process safety and operational control, the system can be equipped with an optional pressure sensor that continuously monitors melt flow resistance. When the filter reaches its contamination limit, the system provides both visual and audible alerts, allowing timely intervention without unexpected production interruptions.
The melt filter is produced in diameters ranging from Ø250 mm to Ø500 mm, making it compatible with a wide range of granule extruder capacities. The heating system consists of four cartridge-type resistors, ensuring uniform temperature distribution across the filter body and preventing melt solidification during operation.
The filter housing features a hardfaced welded surface with a hardness level of 58–60 HRC, significantly increasing resistance to abrasion and wear caused by contaminated recycled materials. Additionally, the ceramic-coated outer plate, supported by an integrated heating system, improves thermal insulation and energy efficiency.
Thanks to its user-friendly control panel and hydraulically assisted operation, filter maintenance and screen replacement can be carried out safely, quickly, and efficiently. This practical design minimizes downtime, improves line stability, and contributes to consistent granule quality in both recycling and compounding extrusion lines.