High Performance Melt Filter ECO

The continuous melt filters of the ECO series are mainly employed in PET and PA applications due to their special design and for filtering polymer feedstock from industrial waste with a low level of contamination or lightly contaminated post-consumer waste, as well as for clean virgin material. Our ECO melt filters are capable of processing a wide range of polymers. All solid or elastomer foreign particles such as gels, black specs, paper, wood, aluminum, copper, rubber, silicone or high-melting polymer composites are efficiently removed. In particular, there is significantly less degraded PET in the form of black specks. For this reason, the classic application for ECO melt filters is extrusion systems, for instance where recycled PET bottle flake is converted into food packaging films, packaging tape, and fibers. PET repelletizing and compounding processes in general are other potential areas of use. ECO 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. Three different sizes –  ECO 350, ECO 500, and ECO 1000 – enable throughputs from 150 to 8,000 kg/hour depending on the application.

Suitable for


Technical data


PET Fines

PET, 100% bottle flakes
Contaminants: Aluminum, paper, PVC
Total level of contaminant: 0.5%
Melt loss 0.3%

PET bottles

Contaminants: Aluminum, paper, black specks
Total level of contaminant: 0.2%
Melt loss 0.1%

Thermoforming packaging film

PET, 100% bottle flakes
Food application
Contaminants: Aluminum, paper
Total level of contaminant: 0.5-0.6%
Melt loss 0.1-0.2%

Packaging tape

PET, 100% bottle flakes
Contaminants: Aluminum, paper
Total level of contaminant: 0.5-0.8%
Melt loss 0.1-0.2%


PET, 100% fines
Contaminants: Aluminum, paper
Total level of contaminant: 0.8-1%
Melt loss 0.8-1%

TPE compounding

Contaminants: Gels, specks
Total level of contaminant: 0.1%
Melt loss 0.1%

Thermoforming sheets

Contaminants: Gels, specks
Total level of contaminant: 0.1%
Melt loss 0.1%

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  • Continuous operation with a constant pressure on the outlet side
  • No need to replace the screen for several weeks, or possibly months, depending on the material and the applicationExtremely low melt losses
  • Absolutely clean filtration surface during the total time in operation
  • Up to 1.5% contaminants removed (we recommend our ERF filter for higher contaminant contents)
  • Completely closed system with no entrapped air
  • Short contaminant residence times in the filter
  • Consistent melt flow without dead zones or degraded polymer
  • Suitable for all polyolefins, polystyrenes, PET and PA
  • Better mixing and homogenizing of highly filled melts
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Technical Data

Débit (kg/h)
ECO 350: 2500 | ECO 500: 4000 | ECO 1000: 8000
Surface de filtration (cm²)
ECO 350: 1570 | ECO 500: 3140 | ECO 1000: 6280
Nombre de zones de chauffage
ECO 350: 6 +1 | ECO 500: 15 +2 | ECO 1000: 20 +3
Poids en kg
ECO 350: 1000 | ECO 500: 3300 | ECO 1000: 5500
Pression de service en bar