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.

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.
  • ABMF PET-C: Constantly high re-granulate quality by full-automatic melt filtration in double cavity technology

The ABMF filter can be retrofitted from discontinuous to continuous.

  1. Continuous melt flow through the screen until the adjustable limit pressure of the screen has been reached and the fully automatic screen change is initiated.
  2. Valve closes and the space in front of the screen is depressurized. The accumulator piston is moved downwards by plastic melt and buffer volume is increased. Wedges open in parallel and release screen fixation.
  3. The screen is moved on by driven transport rollers until clean screen is in filter zone again.
  4. Wedges close and screen is fixed and sealed again.
  5. Valve opens and melt flows back into filter zone.
  6. The accumulator piston is moved upwards at an adjustable speed and adds the amount of mate-rial that was taken up during the screen change. When the accumulator piston has reached the upper end position, the screen change process is completed.

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.
BritAS Filter Filter area [cm2] Filter area [sqin] Volume [Liter] Volume [gal] max. output [kg/h] max. output [lbs/h]
ABMF-0570-07 570 88.4 7 1.8 900 1985
ABMF-0570-09 570 88.4 9 2.3 1200 2646
ABMF-0570-12 570 88.4 12 3.1 1500 3308
ABMF-0750-09 750 116.3 9 2.3 1200 2646
ABMF-0750-12 750 116.3 12 3.1 1500 3308
ABMF-1050-09 1050 162.8 9 2.3 1200 2646
ABMF-1050-12 1050 162.8 12 3.1 1500 3308
ABMF-1050-15 1050 162.8 15 3.9 2000 4410
ABMF-1050-19 1050 162.8 19 4.9 2500 5513
ABMF-1600-12 1600 248 12 3.1 1300 2867
ABMF-1600-15 1600 248 15 3.9 1600 3528
ABMF-1600-19 1600 248 19 4.9 2000 4410
ABMF-1600-25 1600 248 25 6.5 2700 5954

*Output values for LDPE depend on material and contamination.

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.

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%)