Washing & Drying
RAFTER
The Rafter is an efficient pre-washing unit for cleaning highly-contaminated, pre-shredded plastics, such as post-consumer LDPE films and hard plastics made of HDPE and PP.
In three phases, foreign matter such as stones, metal and glass are efficiently separated and adhering particles are detached, optimally preparing the plastics for the downstream washing process.
- Slow torque speed for gentle processing with minimal wear & tear
- Removal of foreign matter by chain-type conveyor
- Easy to integrate in existing systems to increase washing efficiency
TWISTER
The friction washers from the Twister series ensure highly efficient cleaning of contaminated plastics.
Even the finest particles of dirt are removed in a highly dynamic washing process and then separated through a screen. Friction is generated by directing jets of water onto the rotor.
- Variety of machine sizes available with throughput of up to 5000 kg/h
- Stainless steel machine casing
- Special rotor variants for different materials guarantee optimum washing efficiency
- Quick-change rotor paddles and screens
- Robust and maintenance-friendly design
HOT-WASH SYSTEM
The hot-wash system is specially designed for extremely tough contaminants and removes even grease and oil adhering to the material, while also eliminating any glue residues and unpleasant odours.
Through the combined use of three special components – reactor, hot-wash Rafter and hot-wash Twister – the system delivers a highly-effective and at the same time continuous cleaning process.
- Efficient removal of tough dirt particles adhering to the material thanks to optimally dosed friction and long holding of the material
- Can be operated with water or a caustic solution, depending on application and material
- Integrated water treatment facility, if required with automatic monitoring and control of the caustic solution
- Ideal for applications in PET and post-consumer plastics
- Washing temperature between 50°C and 85°C
LOOP DRYER
In the Loop Dryer the plastic granulate is dried mechanically and any particles adhering to the material are detached using controlled centrifugal force.
The dryer spins the plastic granulate at approx. 600–1000 rpm, drying it in the process. The water and any particles such as paper adhering to the material are reliably separated through a special screen.
- Continuous cleaning unit on outside of screen
- Rotor diameters of 1000, 1200, 1500 and 2000 mm
- Different rotor variants with interchangeable and individually adjustable paddles
- Maintenance-friendly layout
STEP DRYER
The Step Dryer enables gentle drying of even brittle and sensitive plastics.
- Gentle drying in 5 screen segments at increasing speed
- Minimised material losses
- High energy efficiency
- Stainless steel machine housing and rotor
THERMAL DRYER
In the Thermal Dryer the film fractions are dried to get them ready for the extrusion process.
In a spiral approx. 30 metres in length, thermal drying of the film fractions to less than 3 % residual moisture takes place using adaptive heating technology. The highly efficient SPS control guarantees a constant temperature, keeping energy consumption at a minimum.
- Optionally as gas or electric models available
- Different machine sizes for various materials and throughput capacities available
- Flexible application possibilities thanks to modular machine construction
- Optimised residual moisture for downstream extrusion
- EcoDry version: upon request with heat exchanger, therefore greater energy savings
To learn more about Lindner Washtech’s innovative range of equipment, head to their website for more information: