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LINDNER WASHTECH

Complete system solutions for washing and recycling plastic waste. From waste to pellets in one process chain with the highest possible efficiency.

machines used

materials before and after

LINDNER washtech (Austria) is a division of LINDNER dealing with complex plastic waste recycling lines. Thanks to the accumulated experience of the parent company and the development department, LINDNER washtec offers unparalleled cost-effective solutions with high throughput – for any requirement at any scale.

The whole line from one brand

From grinding to washing and drying, we offer high-performance system components for every processing step. This creates customized solutions with the best performance because all machines are perfectly coordinated.

MICROMAT / MICROMAT WS

The high-performance and robust Micromat crushers guarantee optimum pre-crushing of plastic waste

These crushers crush the feedstock to the required grain size for downstream processes, from 20 to 100 mm.

A wide range of customizable drives, rotors and knives, as well as special options for plastics
Energy saving drive types with and without frequency converter
Service-friendly layout thanks to specially designed service hatch
Continuous removal of obstacles in the line thanks to safety clutch
Effectively separates dirt particles by directing water jets onto the rotor

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RAFTER

The Rafter is an efficient prewash unit for cleaning heavily soiled, pre-shredded plastics such as used LDPE films and hard HDPE and PP plastics.

In three stages, foreign bodies such as stones, metal and glass are effectively separated, as well as adhering particles are separated, which optimally prepares the plastic for subsequent washing.

Low torque for gentle machining with minimal wear
Removal of foreign bodies by chain conveyor
Easily integrates into existing systems to improve washing efficiency.

TWISTER

The friction washers of the Twister series provide highly efficient cleaning of contaminated plastic.

Even the smallest dirt particles are removed in a highly dynamic washing process and then separated through a sieve. Friction is created by directing jets of water onto the rotor.

Various machine sizes are available with capacities up to 4000 kg/h.
Stainless steel machine body
Special rotor options for different materials guarantee optimal cleaning performance.
Quick change blades and rotor screens

GRANULATOR WG

In the second grinding stage, the Granulator WG crushers reliably crush the material to fine grains.

The pre-washed material is processed at a rotor speed of 450–600 rpm, cleaned and ground to the desired grain size. To ensure first-class quality of the granulate, the rotor has 5 rows of knives and 2 counter-knives and works according to the principle of energy-saving rotary blade cutting.

Available in 5 different machine sizes with capacities up to 3000 kg/h.
Special rotor options for films or rigid plastics
Service-friendly layout with specially designed service hatch for quick and easy access to the rotor
The standard chopper model comes with specially designed rotor seals, additional nozzles and custom sieve modules.

GRAVITER

Graviter separates plastic waste based on its weight.

The proven drop-and-float method is used to securely separate the plastic. In this step, plastics with a density < 1 g/cm³ (PE, PP) are separated from plastics with a density > 1 g/cm³ (PVC, ABS, PET).

3 variants of the Graviter model (1500, 2000, 3000) with different throughput
Economical and wear-resistant processing
Low water consumption – even with films – thanks to optimized material flow
Machine body completely made of stainless steel
Removal of heavy fractions by chain conveyor

LOOP DRYER

The plastic granulate is dried mechanically and any particles adhering to the material are separated by controlled centrifugal force.

The dryer spins the plastic granulate at a speed of approx. 600-1000 rpm, while drying. Water and any particles, such as paper, adhering to the material are reliably separated through a special sieve.

Continuous cleaning unit outside the screen
Rotor diameter 1000, 1200 and 1500 mm
Various rotor options with interchangeable and individually adjustable blades
Service-friendly layout

THERMAL DRYER

In a thermal dryer, the film fractions are dried to prepare them for the extrusion process.

The film fractions are thermally dried along a spiral about 30 meters long to a residual moisture content of less than 3% using adaptive heating technology. The highly efficient SPS control guarantees a constant temperature, keeping energy consumption to a minimum.

Optional gas or electric models available
Various machine sizes available for different materials and throughputs
Flexible application possibilities thanks to the modular design of the machine

HOT-WASH SYSTEM

HOT-WAS SYSTEM is specially designed for extremely stubborn dirt and removes even grease and oil adhering to the material, as well as eliminates adhesive residues and unpleasant odors.

Using three components - stabilizer, hot-wash Rafter and hot-wash Twister - the system provides a highly efficient and continuous cleaning process.

Efficient removal of solid dirt particles adhering to the material due to optimally metered friction and long material retention
Can work with water or alkali solution, depending on application and material
Built-in water treatment plant, optionally with automatic control and lye control
Ideal for PET and recycled plastic applications

FILM EXAMINER

Film Examiner improves product quality in film washing systems

Reliable separation of fine particulate contaminants, which are extremely difficult to remove with traditional methods within the washing line due to their specific density and size.

Installed directly in the air stream after the thermal drying process
Use of different flow characteristics between small contaminants and light film flakes
Retrofitting existing installations is quick, easy and cost-effective

Solutions for all types of plastic

Lindner WashTech will develop a processing plant solution that exactly matches your requirements, regardless of the feedstock and target quality.

POST-CONSUMER FILM / LDPE FILM + HDPE FILM

These waste films are often heavily contaminated and must be pre-sorted before washing and re-granulating. The complex cleaning processes of these films require highly efficient washing systems operating in several stages. The system of pre-washing of rafters, developed by LINDNER, has established itself as a major component of plastic recycling plants.

POST COMMERCIAL FILM / LDPE + LLDPE FILM

These soft films are often contaminated with organic substances and paper labels, which must be removed and separated using a complex procedure. Drying of a thin stretch film is a special task, and Loop Dryer LINDNER series centrifuges effectively cope with it.

HIGH-DENSITY POLYETHYLENE BOTTLES

Thanks to the introduction of the LINDNER hot flushing system, the output material is of such high quality that it can replace primary plastic, which is a prerequisite for a real closed-cycle economy.

POLYPROPYLENE BOXES / POLYPROPYLENE RIGID PLASTICS

These are plastics such as monofractions and mixed plastics recovered from commercial waste or roadside waste collection. The Micromat series pre-shredders from LINDNER are robust machines that are resistant to foreign objects and obstacles and reliably grind the feed material to a predetermined grain size.

POLYPROPYLENE SHEETS

Lightweight polypropylene sheets require a washing technology similar to that used for plastic films. Plastic is processed in several stages, while the material is also subjected to the process of dynamic friction. LINDNER WASHTECH friction cleaners from the Twister series are a gentle but very effective solution for thorough cleaning of heavily contaminated plastic waste.

Cans/IBCS made of HDPE

Since these monofractions are very large, effective pre-grinding in a LINDNER single-shaft shredder is in the first place. As a rule, these fractions are contaminated with oil, grease or chemicals, which requires a flushing line with a sewage filtration system. LINDNER WASHTEC offers additional water treatment systems for all its washing lines.

POLYPROPYLENE BIG BAGS

Polypropylene big bags are a particular disposal problem, as they often contain unidentified foreign substances. Abrasive residues such as sand, glass or ceramics can increase the wear of the cutting unit. In order to guarantee uninterrupted operation with high productivity, despite the additional load on the machine, we offer special sets of replacement and spare parts.

AGRICULTURAL FILM (LDPE/LLDPE)

Agricultural films require very thorough washing and drying, which makes the processing of these materials very difficult and complex. This is where the technological know-how and experience of LINDNER WASHTECH manifest themselves best. We have supplied many customers from all over the world with machines for this application adapted to the highly specialized requirements of customers.