ABMFABMF - Automatic Belt Melt Filter

High regranulate quality at low operating costs and that fully-automatic – that is the ABMF series –  automatic belt melt filter manufactured by BritAS GmbH.

High regranulate quality at low operating costs and that fully-automatic – that is the ABMF series – automatic belt melt filter manufactured by BritAS GmbH.

In order to filter contaminations effectively and efficiently out of plastics waste, in case of the BritAS filter, the filter fabric is fully-automatically changed. Thus, the regranulate quality remains constantly high and the contamination is discharged out of the machine with a very low loss of melt. By an intermediate container for the melt, the upstream extruder is permanently running. 

Filter types

  • AMBF: Typical automatic belt melt filter with buffer store for the melt and a screen surface of up to 1600 cm2
  • ABMF-C Continuous: The double buffer configuration guarantees a continuous melt flow.
  • ABMF-BV Before Venting: Fine filtration before degassing.
  • ABMF-TH: Huge filter area of two ABMF filter units connected via melt adapters.

The ABMF filter can be retrofitted from discontinuous to continuous.

1.
Continuous melt flow through the screen.
Reaching the adjustable limit pressure in front of the screen:
The fully-automatic screen change is started.

2.
The valve will be closed – the space in front of the screen is unpressurized.
The accumulator piston is moved downwards by the plastics melt and the buffer volume is increased.
The wedges are opened parallel and the screen belt fixing is released.

3.
Via transport rolls, the screen belt is guided until there is clean screen mesh in the filter zone again.

4.
The wedges will be closed – the screen belt is fixed and sealed again.

5.
The valve will be opened – there is access again for the melt to the filter zone.

6.
With an adjustable speed, the accumulator piston is
moving upwards and the material quantity, which was accumulated during the screen change is dosed. If the
accumulator piston has reached the upper end position, the screen change procedure is finished.

Your advantages

Automated. Fully-automatic filtration.

The filter mechanics combined with the control provide for a fully-automatic,practical and cost-saving operation.

Clean. Very high filtration fineness.

Up to three filter belts can simultaneously be used. This allows an exact adjustment of different filter screen finenesses.

Permanent. Extruder operation during screen belt feed.

By storing temporarily the plastics melt, also during the screen feed, the extruder continues running and guarantees high process reliability.

Effective. Very high throughput rates.

The new support plate design – consisting of grid and die plate – guarantees higher throughput, thus less pressure generation and more gentle processing.

Perfect. Homogeneity of the plastics melt.

The optimized flow channel improves the melt flow considerably again without material stress.

Efficient. Very low operating costs

Besides the automatic operation of the filter with high plastics throughput, the use of filter belts with dutch weave meshes ensures low operating costs at high output.

BritAS uses simulations as basis for product optimizations – example optimization grid and die plate

Constant flow through the die plate
Flow speed
Flow distribution

Filtration material

Suitable for post-consumer and post-industrial plastics waste and agricultural film.

Filter belts

Depending on the customer requirement, different materials, dimensions, weaves and tensile stren possible.

  • Filter belt roll: 20 – 25 kg, roll length up to 50 m
  • Filtration fineness: 50 μm to 950 μm
  • Simultaneous use of up to three filter belts with different mesh size is possible.

Technical data

  • Certified. Certified according to EN 15343ff, excellent regranulate characteristics.
  • Tested. Product development supported by simulations.
  • User-friendly. Pleasant filter operation via central unit.
  • Practical. Uncomplicated maintenance.
  • Failproof. Optimized processing process and steady process parameters.
  • Successful. Screen change procedure up to every 2 minutes.

BritAS Filter

Filter Area [cm2]

Melt buffer volume [Liter]

Output max [kg/h]

ABMF-0570-07

570

7

-900

ABMF-0570-09

570

9

-1200

ABMF-0570-12

570

12

-1500

ABMF-0750-09

750

9

-1200

ABMF-0750-12

750

12

-1500

ABMF-1050-09

1050

9

-1200

ABMF-1050-12

1050

12

-1500

ABMF-1050-15

1050

15

-2000

ABMF-1050-19

1050

19

-2500

ABMF-1600-12

1600

12

-1300

ABMF-1600-15

1600

15

-1600

ABMF-1600-19

1600

19

-2000

ABMF-1600-25

1600

25

-2700

*Output value for LDPE depending on material and contamination.

THE CLEAN WAY.

  • High quality rPellets
  • Low operating costs
  • Fully-automatic
  • Modular design & platform technology
  • Generally, perfectly operating with agricultural film
  • The filter for post-consumer applications.

Lowest melt loss of all filtration technologies (less than 1%)