Friction Plastic Washers

Friction washers remove dirt, grease and food stuffs from heavily contaminated plastics before further processing takes place.

Operation of Friction Washers

Rotajet Plastic Friction Washers are used to wash highly contaminated plastic films, PET and rigid bottle granulate. Normally the Rotajet friction washers are located after wet granulation and prior to Rotajet float sink tanks.

The Rotajet friction washer consists of a high-speed rotor mounted into housing by two bearings top and bottom, around the Rotor, there is a full hexagonal screen. The rotor and screen are housed in a robustly manufactured frame that is mounted on an incline.

The liquid and plastic granulate mix from the wet granulator, is fed into the base of the Rotajet friction washer. High speed rotating paddles force the liquid and granulate mix to the outside screen, forcing the liquid and contaminants to pass through the screen. The plastic granulate is driven up the screen at high speed to the material outlet at the top. 

The screen is fitted with outside spray bars to keep the screen clean and free of plastic dust and paper pulp. For highly contaminated material a pneumatic screen scraper can be fitted to scrape the screens clean, this is used in conjunction with the spray bars.

The Rotajet friction washers are manufactured with easy to replace D2 paddles, and quick release internal screens.

Rotajet plastic decontamination machine

Contact Rotajet

We aim to get back to any enquiry within 12 hours, so please contact us if you are interested in a specific machine or would like to discuss an individual cleaning application. Our friendly team are happy to help via email at or by phone on +44 (0) 1924 271446.