Cleaning and drying


Type: FW

The WiPa Frictionwasher type FW is used for intensive washing, but also for dewatering of plastics.


The process

The material is fed into the bottom of the friction washer/separator and conveyed to the top by the throwing vanes mounted on the internal rotor. During transport, the material is repeatedly thrown against the screen basket located around the rotor, which cleans the material and separates water, paper fibers, sand and other contaminants.

Strainer basket

The screen basket of the WiPa friction washer/separator has been enlarged by up to 30% so that a considerably larger quantity of contaminants and liquids can be separated.

The canted lids ensure continuous turning of the material, which significantly improves the separation of impurities.

The sieve elements have the same dimensions, which saves storage and spare parts costs, as the elements can be interchanged or simply replaced. In the intake area of the machine, the screening elements are subjected to greater stress than in the rear part of the machine, which results in higher and faster wear of these. Due to identical dimensions of the sieve plates in the front and rear part of the machine, it is possible to change the sieve elements from front to rear.

This saves on spare parts costs, as the screen plates can be used for longer. Separate sieve elements additionally allow the use of different sieve perforations. For example, a larger screen perforation can thus be installed in the feed area of the machine than in the rear area of the machine.

The screen perforation can be individually adapted to the material. Round screen perforations between 2 and 3 mm are used as standard. However, other sieve bars with e.g. conical or angular perforations, as well as special sieve elements for e.g. the preparation of fibers or big bags can be supplied. The new screen design provides a much larger screen area than comparable equipment, significantly increasing separation, washing and drying results.


The rotors of the FW series are equipped with replaceable throwing blades. This enables the use of a wide variety of materials and geometries, matched to your material. Another advantage of the replaceable throwing blades is that the rotor itself acts only as a carrier and is subject to almost no wear. The rotor has a circumferential speed of approx. 30m/s during operation, which subjects the material to very high centrifugal forces that ensure optimum separation of material and contamination, as well as liquids.

360° Maintenance

The WiPa Frictionwasher type FW has cover plates on the top and bottom of the machine. The machine can be opened almost 360° for cleaning and maintenance work. For possible inspection work, further inspection openings are distributed over the entire machine.

See for yourself:

These are the advantages of this machine

LDPE film

PP Big Bag/Raffia

HDPE regrind

PP Grist

All data at a glance

Technical data
FW 350
FW 500
FW 700
FW 800
FW 1000
Rotor diameter
350 mm
500 mm
700 mm
800 mm
1000 mm
Rotor length in mm
Screen area
1,9 m²
3 m²
5,8 m²
7,2 m²
8,9 m²
11 – 15 kW
22 kW
37 – 45 kW
45 – 55 kW
75 – 90 kW
Weight in Kg
3000 – 4000
3000 – 4500
4500 – 5500
Throughput up to
LDPE film
1,3 – 1,8
1,5 – 2,5
3 – 4,5
HDPE/PP regrind
1,5 – 2,5
1,8 – 3
3 – 5
PET bottle flakes
1,5 – 2,5
1,8 – 3
3 – 5
Drinks carton
1,5 – 2
1,7 – 2,5
3 – 4,5

Throughput rates and technical data are empirical values and may vary depending on the material.