Continuous filtration system

High Performance Melt Filter ERF

High Performance Melt Filter ERF

The continuous melt filters in the ERF series are suitable for materials with up to 16% by weight contamination and are guaranteed to remain in use for long periods without changing the filter. Our ERF melt filters are capable of processing a wide range of polymers (e.g. LDPE, LLDPE, HDPE, PP, PS, ABS, PC / ABS, TPE, TPU, POM). All solid or elastomer foreign particles such as paper,wood, aluminum, copper, rubber, silicone, or high-melting polymer composites are efficiently removed.
The classic application for ERF melt filters is repelletizing lines, but they are also successfully employed for sheet and profile extrusion. ERF melt filters can in principle be used in any extrusion line – either single or twin-screw and irrespective of the type of pelletizing system or other downstream unit. Four different sizes enable throughputs from 150 to 10,000 kg/h depending on the application.

Inquiry system 

Configure your own product according to your requirements and needs. If you are unsure of the configuration, provide us in the notes the necessary information about the existing sensor or product, even a competitor. We will be happy to help you find an alternative MAAG products. If your request is urgent, let us know. We will do our best to help you resolve this situation to your satisfaction as quickly as possible. If we have all the information, we are able to offer a model with minor differences.

If you need more information do not hesitate to contact us.

MAAG Configuration code

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​​ Applications

ERF continuous melt filters are suitable for processing all standard polyolefins and polystyrenes with the exception of PVC; they are designed to remove foreign particles such as paper, aluminum, wood, elastomers (rubber, silicone) or high-melting polymer composites from heavily contaminated materials.

Packaging film

Contaminant Paper, 1-3%
Melt loss 1-2%

Yogurt cup punchings

Contaminant Aluminum, PET, 3-5%
Melt loss 2-4%

Household garbage

Contaminant Paper, wood, aluminum, other polymers, rubber, 3-5%
Melt loss 2-4%


Contaminant Aluminum, 8-10%
Melt loss 5-6%

Refrigerator waste

Contaminant Aluminum, wood, other polymers, rubber, 2-3%
Melt loss 1.5-2%

Bottle caps

Contaminant PET, paper, 2-5%
Melt loss 1.5-4%

Recycled bumpers

Contaminant Paint, rubber, 1-2%
Melt loss 1-1.5%

Elektronic waste

Contaminant paper, aluminium 1-2%
Melt loss 0.5-1%

Detergent and cosmetics bottles

HDPE blow film
Contaminant Paper, aluminum, 1-2%
Melt loss 1-1.5%

Polystyrene sheets

Contaminant EPS, Wood, 2-3%
Melt loss 1-1.5%


Contaminant Silicones, rubber, 2-3%
Melt loss 1.5-2%



  Technical Data ECO 200 ECO 250
Total filtration surface 1,250 cm2 1,570 cm2
Filter screen diameter 200 mm 250 mm
Throughput up to 1,800 kg/h up to 3,000 kg/h
Number of heating zones 6 6
Heating capacity 20 kW 23 kW
  Motor capacity filter 3.8 kW 3.8 kW
  Motor capacity discharge shaft 0.9 kW 0.9 kW
Speed filter max. 10 min-1 10 min-1
Speed discharge shaft max. 9  min-1 9 min-1
Weight 800 kg 1000 kg
Operating pressure max. 300 bar 300 bar
  Available filter fineness 0* / 80 / 120 / 150 200 / 250 / 300 / 500 / 1,000 µm

Additional ECO applications

PET strapping tape.
Optical sheet for tv or mobile screens.
  Food packaging.
  PET thermoforming sheet.
  TPE-compounding with reactive components.
  Compounds with natural organic fillers (fibers e.g.)
  PET re-pelletizing.
  Film and compounds for sanitary products (diapers e.g.)
  Many others.

Schmelzefilter – die Baureihe ECO

Ein rotierendes und mit einer Vielzahl von konischen Bohrungen versehenes Filtersieb wird von außen nach innen von Schmelze durchströmt. Die in der Schmelze enthaltenen Verschmutzungen verbleiben auf der Filteroberfläche und werden spätestens nach einer Umdrehung über einen Abstreifer von der Sieboberfläche abgenommen, der Austragswelle zugeführt und direkt aus dem Prozess nach außen gefördert. Mit jeder Umdrehung des Filtersiebes wird also wieder 100% saubere Siebfläche zur Verfügung gestellt. Die Gestaltung der Austragswelle und des Austragssystems ermöglicht auch die Verarbeitung von niedrigviskosen Polymerschmelzen wie z.B. PET und PA. Der maximale Verschmutzungsanteil ist, im Vergleich zum ERF-Schmelzefilter, auf 1,5% begrenzt.