Why It Is Critical to Producing High-Quality Recycled Plastic
As plastic recycling technology continues to evolve, recyclers are under increasing pressure to produce cleaner, higher-quality recycled materials. While washing and separation often receive most of the attention, plastic drying remains one of the most important stages within any recycling process.
Effective plastic drying helps reduce moisture content, improve extrusion efficiency, increase product quality and minimise operational costs. Without adequate drying, even the cleanest plastic can cause downstream processing issues that reduce profitability and compromise the quality of the finished product.
At Rotajet Systems, we design and manufacture a range of plastic drying solutions that help recycling facilities achieve the moisture levels required for pelletising, extrusion and material reuse.
During the washing process, plastics are exposed to significant volumes of water used to remove contamination such as food residues, labels, adhesives, oils and dirt. While this cleaning stage is essential, it leaves the material carrying moisture that must be removed before further processing.
Insufficient plastic drying can result in:
Reduced extrusion performance
Increased energy consumption
Poor pellet quality
Material degradation
Inconsistent product quality
Higher processing costs
Reduced value of recycled material
By incorporating the correct plastic drying technology, recyclers can significantly improve plant performance while producing a higher-value end product.
Choosing the Right Plastic Drying Method
Every recycling application is different. The type of plastic, contamination level, throughput requirement and desired final moisture content all influence the most suitable drying solution.
Rotajet offers several plastic drying technologies designed to suit different applications and production requirements.
RJ-Turbo Friction Dryer
The RJ-Turbo is Rotajet’s high-speed friction dryer, designed to remove moisture and surface contamination simultaneously.
Using a powerful rotor fitted with 32 individually adjustable paddles protected by chromium carbide wear plates, the RJ-Turbo generates significant centrifugal force as material passes through the machine. This action forces moisture through a perforated screen while retaining the plastic inside the drying chamber.
The result is highly effective plastic drying combined with additional cleaning performance.
Key benefits include:
High-speed drying action
Moisture reduction and cleaning in one process
Adjustable performance to suit different materials
Suitable for rigid plastics and film
Standalone or integrated installation options
Low maintenance design
The RJ-Turbo can also be configured with spray jetting and recirculation systems where additional washing functionality is required.
Mechanical Plastic Dryers
Mechanical dryers are among the most widely used solutions for plastic drying due to their efficiency and relatively low operating costs.
Rotajet manufactures both horizontal and vertical mechanical dryers that utilise centrifugal force to separate moisture from plastic flakes and granules.
As material enters the machine, high-speed rotor paddles force the plastic against dewatering screens. Water passes through the screens while the dried material is discharged for further processing.
Mechanical plastic dryers can reduce moisture levels to approximately 1%, making them ideal for many recycling applications.
Benefits include:
Efficient moisture removal
Continuous operation
High throughput capabilities
Low energy consumption
Compact footprint options
Thermal Plastic Dryers
Certain applications require even lower moisture levels before extrusion or pelletising. In these situations, thermal drying provides the most effective solution.
Rotajet thermal dryers use high-volume airflow combined with controlled heating to further reduce residual moisture following mechanical dewatering stages.
Thermal drying can achieve moisture levels as low as 0.5%, helping recyclers produce material suitable for demanding downstream processes.
Advantages include:
Extremely low final moisture levels
Improved extrusion stability
Enhanced pellet quality
Suitable for demanding applications
Consistent drying performance
Screw Compactors for Film Drying
Plastic film presents unique challenges during plastic drying due to its large surface area and tendency to retain water.
To improve efficiency, Rotajet offers screw compactors that mechanically squeeze excess moisture from film before it enters the final drying stage.
This reduces drying times, lowers energy consumption and improves overall plant efficiency.
Screw compactors are particularly effective when processing:
LDPE film
LLDPE film
Agricultural film
Flexible packaging
Post-consumer film waste
Integrating Plastic Drying into Recycling Lines
The most effective recycling facilities treat plastic drying as part of an integrated process rather than a standalone operation.
A typical recycling line may include:
Size reduction
Washing
Friction cleaning
Sink-float separation
Mechanical drying
Thermal drying
Material handling
Storage and bagging
By ensuring each stage works together, recyclers can maximise throughput, improve material quality and reduce operating costs.
Why Choose Rotajet for Plastic Drying?
Rotajet Systems designs and manufactures plastic recycling machinery in the UK, supplying both standalone equipment and complete recycling plants.
Our engineers work closely with customers to understand material characteristics, production requirements and target moisture levels before recommending the most suitable drying solution.
Whether you require an RJ-Turbo friction dryer, a mechanical dryer, a thermal dryer or a complete recycling system, Rotajet can provide the expertise, equipment and technical support needed to achieve reliable results.
Free Material Trials
The most effective way to determine the correct plastic drying solution is through testing. Rotajet offers free material trials, allowing our engineers to evaluate your feedstock, assess moisture levels and recommend the most suitable drying technology for your application.
Recycling HDPE Containers into High-Quality Plastic for Reuse
HDPE is one of the world’s most valuable and widely recycled plastics—but only when it is processed correctly.
Used HDPE containers, drums, bottles and industrial packaging are manufactured from high-quality polyethylene that can often be recovered and reprocessed into new products. However, before this material can be recycled, contaminants such as oils, chemicals, detergents, labels and production residues must be removed to produce clean plastic suitable for reuse.
At Rotajet Systems, we design and manufacture complete HDPE recycling plants, HDPE washing lines and plastic recycling equipment that transform contaminated HDPE containers into clean, dry plastic flake ready for granulation and manufacture.
Whether you’re processing production scrap, post-consumer packaging or contaminated industrial containers, our systems help maximise material recovery while improving the quality and value of the recycled plastic.
Why HDPE Is One of the Most Recycled Plastics
High-Density Polyethylene (HDPE) combines excellent strength, impact resistance and chemical resistance with outstanding recycling potential.
Instead of disposing of used containers, manufacturers and recycling companies can recover valuable raw material that can be reprocessed into a wide variety of new products, helping reduce waste while supporting the circular economy.
Recycling HDPE can help businesses:
Recover valuable raw material
Reduce disposal costs
Reduce landfill
Improve sustainability
Produce consistent recycled plastic
Increase material recovery
Support circular manufacturing
Reduce virgin plastic consumption
The cleaner the recovered material, the greater its value for future manufacturing applications.
Not All HDPE Waste Is the Same
Every HDPE recycling project presents different challenges.
Some manufacturers recycle clean production scrap generated during blow moulding or injection moulding, while others process heavily contaminated containers that have previously held chemicals, lubricants, food ingredients or industrial products.
Typical HDPE materials include:
Chemical drums
Plastic bottles
HDPE bottles
IBC bottles
Plastic pails
Jerry cans
Detergent containers
Food ingredient containers
Lubricant containers
Agricultural chemical containers
Industrial packaging
Blow moulded products
Wheelie bins
Pipe offcuts
Manufacturing scrap
Production offcuts
Each application requires a recycling process designed around the material, contamination level and quality requirements of the finished recycled plastic.
Why Washing Is More Important Than Most People Think
In our experience, one of the most common causes of poor recycled plastic quality isn’t the granulator; it’s inadequate washing.
Residual chemicals, oils, labels and fine contamination left on the plastic surface can reduce the quality of the finished granulate and affect downstream manufacturing processes.
An effective HDPE washing line removes:
Chemical residues
Oils and lubricants
Detergents
Adhesives
Labels
Dirt and dust
Sand
Product residues
Moisture
Metal contamination
Producing clean HDPE flake before drying and granulation helps improve the consistency and quality of the finished recycled material.
From Used Container to New Product
Recycling HDPE is a complete engineering process rather than a single machine.
A typical HDPE recycling line includes:
Used HDPE Containers → Size Reduction → Pre-Washing → Hot Washing → Sink-Float Separation → Friction Washing → Thermal Drying → Granulation → Manufacturing New Products
Each processing stage removes contamination while preparing the material for the next operation, helping maximise recovery and produce high-quality recycled HDPE.
Industries Recycling HDPE
Rotajet recycling systems support organisations including:
Plastic recycling companies
Chemical manufacturers
Packaging manufacturers
Blow moulding companies
Injection moulding companies
Food manufacturers
Agricultural suppliers
Waste management companies
Industrial manufacturers
Plastic compounders
Environmental service providers
Whether recycling clean production waste or contaminated post-consumer packaging, our systems can be tailored to suit your application.
Complete HDPE Recycling Plants
Every recycling facility has different production objectives.
Some require a standalone washing system, while others require a complete integrated recycling plant capable of processing large volumes of contaminated HDPE containers continuously.
Rotajet designs complete systems incorporating:
Size reduction
Washing
Hot washing
Sink-float separation
Friction washing
Thermal drying
Granulation
Material conveying
Storage systems
Every recycling line is engineered around your material, throughput and finished product specification.
Material Trials & Process Development
No two HDPE waste streams behave the same way.
In our experience, containers that have held oils, detergents or chemicals often require different washing stages to achieve the material quality needed for high-grade recycling. The most effective process depends on the previous contents, contamination level and the intended use of the recycled HDPE.
Before specifying equipment, Rotajet can evaluate representative material samples and recommend the most suitable recycling process, helping reduce project risk before investment.
Integrated Plastic Recycling Systems
HDPE recycling is often one part of a wider recycling operation.
Rotajet also designs complete integrated recycling plants capable of processing multiple rigid plastic materials through a fully engineered production line.
Explore our Integrated Plastic Recycling Systems:
Frequently Asked Questions
Can contaminated HDPE containers be recycled?
Yes. With the correct combination of size reduction, washing, separation and drying, many contaminated HDPE containers can be converted into clean plastic flake suitable for granulation and reuse.
What is the difference between an HDPE washing line and a complete HDPE recycling plant?
A washing line focuses on cleaning the material, while a complete recycling plant integrates size reduction, washing, separation, drying and granulation to produce finished recycled material ready for manufacturing.
Can production scrap and post-consumer HDPE be processed using the same system?
In many cases, yes. However, the washing process and equipment configuration are usually tailored to suit the contamination level and required finished material quality.
Can Rotajet carry out recycling trials?
Absolutely. Material trials allow us to evaluate your HDPE waste and recommend the most effective recycling process before equipment is specified.
As demand for high-quality recycled plastics continues to grow, recyclers are under increasing pressure to produce cleaner material, improve efficiency and maximise the productivity of recycling plants.
Whether you’re processing rigid plastics, bottles, film, drums or industrial packaging, an integrated plastic washing system can significantly improve the quality of the finished product while reducing operating costs.
Rather than relying on individual standalone machines, integrated recycling plants combine each stage of the recycling process into one efficient, automated system.
Each stage is designed to work together, delivering consistent performance and producing clean recycled plastic ready for extrusion, pelletising or reuse.
Rotajet systems can be configured for processing a wide range of materials including:
PE / HDPE / LDPEPETMixed RigidsIBCsFilmPlastic Drums
Every recycling application is different, which is why our systems are designed around the customer’s material, contamination level and production requirements.
Benefits of Integrated Recycling Plants
An integrated washing line offers several advantages over disconnected equipment:
Improved cleaning performance
Higher throughput
Reduced manual handling
Lower water consumption through recirculation options
Consistent product quality
Increased automation
Reduced operating costs
Easier maintenance and control
By designing each stage to work together, recyclers can achieve greater efficiency while producing higher-value recycled material.
From Single Machines to Complete Recycling Plants
Rotajet supplies everything from individual washing machines through to complete turnkey recycling systems.
Our engineers work closely with customers to understand material characteristics, contamination levels, available space and production targets before recommending the most suitable solution.
Whether you’re upgrading part of an existing line or installing a brand-new recycling facility, we can provide equipment, installation, commissioning and ongoing technical support.
Free Material Trials
The best way to assess a recycling process is by testing your own material.
Rotajet offers free material trials, allowing our engineers to evaluate your plastic feedstock and recommend the most effective washing process and plant configuration.
In many cases, chemical drums, IBCs and plastic pails are manufactured from high-quality HDPE that can be recycled and reprocessed into new products. The challenge isn’t the plastic itself—it’s the contamination left behind.
Residual chemicals, oils, paints, adhesives, powders and other process materials can prevent valuable plastic from being recycled efficiently. Before these containers can become clean recycled granulate, they must pass through a carefully engineered washing process that removes contamination while protecting the quality of the recovered material.
At Rotajet Systems, we design and manufacture complete container recycling systems that transform contaminated industrial packaging into clean, dry plastic flakes ready for granulation and reprocessing. Our integrated recycling lines help manufacturers and recycling companies recover more valuable material while reducing landfill and disposal costs.
Industrial containers are manufactured to withstand demanding environments, making them an excellent source of high-quality recyclable plastic.
Rather than disposing of used packaging, many businesses are recovering HDPE and other engineering plastics for reuse in manufacturing.
Effective recycling helps businesses:
Recover valuable HDPE
Reduce disposal costs
Remove product residues
Improve recycled material quality
Produce clean plastic flake
Prepare material for granulation
Support circular manufacturing
Maximise material recovery
Turning contaminated containers into reusable raw material creates both environmental and commercial value.
Every Container Presents a Different Challenge
No two waste streams are the same.
Some containers contain food products that wash away easily, while others have held oils, detergents, paints, inks, chemicals, powders or adhesives that require more intensive processing.
Typical containers include:
Chemical drums
Plastic drums
IBC bottles
Plastic pails
Jerry cans
Lubricant containers
Food ingredient containers
Detergent containers
Paint containers
Chemical storage vessels
Industrial packaging
Manufacturing containers
Each application requires a recycling process designed around the contamination and the required quality of the finished recycled material.
From Used Container to Recycled Plastic
Recovering plastic from industrial containers involves several carefully controlled stages.
Every stage contributes to producing clean, dry granulate suitable for reuse in a wide range of manufacturing applications.
Removing Contamination
One of the biggest challenges in container recycling is removing residues without damaging the plastic.
Typical contaminants include:
Chemical residues
Oils and lubricants
Paints and coatings
Adhesives
Powders
Food residues
Labels
Dirt and dust
Metal contamination
Moisture
Effective washing and rinsing systems help prepare clean plastic for the next stage of recycling while improving the quality and value of the finished product.
Complete Container Recycling Systems
Rotajet designs complete container recycling systems that combine multiple stages into one integrated process.
Depending on the application, systems may include:
Container preparation
Size reduction
High-performance washing
Rinsing
Sink-float separation
Friction washing
Thermal drying
Granulation
Material conveying
Storage
Every recycling line is engineered around your container type, contamination levels and production requirements.
Integrated Plastic Recycling Solutions
Container recycling is often one part of a larger recycling operation.
Rotajet also designs complete integrated recycling systems capable of processing a wide range of rigid plastic materials through a fully engineered production line.
Material Trials & Process Development
Not every contaminated container behaves the same way.
Before designing a recycling system, our engineers can assess representative containers and recommend the most effective washing, rinsing and separation process to achieve the required recycled material quality.
Material trials help reduce project risk while ensuring the recycling line is designed specifically for your application.
FAQs
Can contaminated drums be recycled
Yes. With the correct washing and recycling process, many contaminated HDPE drums can be cleaned, processed and converted into reusable plastic granulate.
Can IBCs and plastic pails be recycled in the same system?
Depending on their size, construction and contamination levels, integrated recycling systems can often be configured to process multiple types of industrial containers.
Can Rotajet remove labels and product residues?
Yes. Our washing, rinsing and separation systems are designed to remove a wide range of residues and contaminants, helping improve the quality of the recovered plastic.
Can Rotajet design a complete container recycling line?
Absolutely. We design and manufacture complete integrated recycling systems, from container preparation and washing through to drying, granulation and material handling.
The Complete Industrial Guide to Maximising Uptime, Throughput and Profitability
Industrial shredders and granulators are not background equipment. In most recycling and plastics operations, they are the front end of the entire process. If size reduction is inconsistent, the rest of the line usually suffers with it. Washing becomes less effective, separation becomes less accurate, dryers work harder, and overall product quality becomes harder to control. Rotajet’s own plastics content reflects that same principle: size reduction comes first, then washing, separation and downstream recovery.
That is why shredder servicing and granulator servicing should not be treated as a narrow maintenance task. The goal is not just to keep a machine turning. The goal is to protect throughput, maintain cut quality, reduce avoidable wear, and keep the whole system working efficiently. HSE’s guidance makes the same broader point: maintenance is carried out to prevent problems, correct faults and ensure equipment is working effectively, and an effective maintenance programme improves reliability, productivity and efficiency.
Why servicing matters more than most sites realise
A machine can still run and still be costing money. A shredder with worn knives, a blocked screen, poor rotor condition or incorrect settings may keep processing material, but it will usually do so less efficiently. In practice that can show up as inconsistent output size, more dust or fines, increased recirculation, extra operator intervention, more stress on bearings and drives, and poor feed consistency into washing or separation stages.
That matters even more in plastic recycling. Rotajet states that plastic recycling begins with size reduction and that shredders and granulators prepare material for washing, separation and pelletising; it also notes that smaller particles improve movement through recycling equipment and that flake size supports washing and separation performance.
For heavily contaminated plastic streams, the connection is even stronger. In the anaerobic digestion reference sheet you provided, mixed plastic from food waste depackaging is described as containing up to 50% moisture and 25% organic residue, with the RJ-Turbo then using high-speed friction and water injection to remove food residues, fats and oils. If the incoming material is not opened up properly by upstream size reduction, contamination is harder to expose and remove.
Shredder servicing vs granulator servicing
Although the two are often grouped together, they do different jobs and need different service priorities.
A shredder is usually the primary size reduction stage. Rotajet’s size reduction pages describe shredders as the stage that reduces bulky materials into a manageable shredded size, typically using high torque to handle larger items such as drums, pallets, rigid containers and industrial packaging.
A granulator is normally the secondary reduction stage. Rotajet describes granulators as higher-speed machines that cut plastics into smaller flakes or regrind suitable for washing and recycling, with screens used to control particle size.
That distinction matters because servicing priorities are different. Shredders tend to be more tolerant of variation, but they see high torque loads and large infeed shocks. Granulators are more sensitive to knife sharpness, knife gap, rotor balance and screen condition because they are controlling a much finer and more consistent output.
Types of machine Rotajet can support
This is one of the areas where your article needed to be clearer. It should explicitly say what kinds of machine can be serviced, repaired, upgraded or supported with spares.
Rotajet’s size reduction offering covers industrial shredders, granulators, combined shredder/granulator systems and replacement blades and parts, alongside service support and rental options. The public pages also show a broad range of equipment from compact to heavy-duty, including slow-speed granulators, heavy-duty granulators, standalone shredders, and the ZCS combined shredder/granulator system.
Machines commonly covered include:
Single-shaft shredders for bulky rigid plastics and industrial waste
High-torque shredders for containers, drums, pallets and packaging
Combined shredder/granulator systems for compact integrated size reduction
High-speed granulators for flake production before washing or extrusion
Slow-speed granulators for sprues, runners and beside-the-press applications
Heavy-duty granulators for more demanding recycling duties
Existing third-party shredders and granulators where replacement blades, screens or servicing support are required
Rotajet’s own site states it supplies replacement blades for Rotajet granulators and for various external granulator manufacturers, and also replacement shredder blades for multiple external machine brands.
What proper servicing should cover
A proper shredder or granulator service should go beyond “swap the obvious worn parts and leave.” The most useful service programmes usually combine inspection, wear management, setup correction and process review.
1. Knives, cutters and cutting geometry
Knife condition is the first thing most operators think about, and rightly so. Sharp, correctly mounted knives improve cut quality, reduce unnecessary load and help produce a more consistent output. Granulators rely on good interaction between rotor knives, bed knives and screen size. Rotajet’s granulator content identifies granulators as high-speed knife systems controlled by screens, which is exactly why knife condition matters so much.
2. Screens and particle control
Screens are central to consistent granule size. Damaged or blinded screens can reduce throughput and create an inconsistent downstream feed. On combined systems and granulators, screen integrity directly affects wash performance, separation behaviour and flake consistency.
3. Rotor condition and balance
Poor rotor condition can create vibration, accelerate bearing wear and make output less consistent. In higher-speed granulation, balance is particularly important because small defects become more damaging as speed rises.
4. Bearings, drive systems and transmission components
Bearings, belts, couplings and gearbox condition all affect reliability. HSE notes that maintenance is not only about correcting faults but about preventing problems and diagnosing them early. That is especially relevant with rotating machinery where early intervention is far cheaper than a breakdown.
5. Feed behaviour and material handling
A shredder may be mechanically sound and still perform badly because the machine is not matched properly to the feedstock. Film behaves differently to rigid containers. Wet, contaminated plastics behave differently to dry in-house scrap. Production waste, drums and industrial packaging all create different load profiles. Rotajet’s size reduction and plastic recycling pages repeatedly frame machine choice around the plastic type, contamination level, throughput target and required particle size.
Application-specific servicing is where the real value is
One reason generic servicing underdelivers is that size reduction is highly application-dependent.
Plastic recycling
Rotajet’s plastic recycling pages make clear that shredders and granulators are used across rigid plastics, films, industrial packaging, injection moulded parts, WEEE-related streams and production waste. Different materials need different knife setups, feed strategies and maintenance intervals. Film can wrap. Rigid packaging can shock-load a machine. Contaminated rigid plastics can accelerate wear on cutting components and screens.
Washing-line applications
This is where Rotajet has a strong SEO and commercial angle. The company’s plastics content is built around integrated process performance, not isolated machines. Rotajet’s March 2026 UK recycling machinery article explicitly says the focus is on complete process performance, not just individual machines, and highlights modular systems including size reduction, washing and sink-float separation.
That message fits perfectly here. If the objective is clean flake, not merely reduced volume, servicing should protect the washing process too. Incorrect particle size, smeared cuts, overloaded washers or uneven feed into sink-float tanks all reduce the quality of the final recyclate.
Organic-contaminated plastics and AD streams
The AD reference sheet is especially useful because it ties size reduction directly to washing difficulty. It describes a stream with heavy moisture and organics and a friction-wash stage designed to remove residues and return valuable organics back into the process. In those applications, shredder and granulator servicing is not just about uptime. It is about exposing contamination so the wash system can do its job.
In-house production scrap
Slow-speed granulators are commonly used beside presses for runners, sprues and rejected mouldings. Rotajet’s GSL page describes slow-speed granulators for injection and blow moulding, with low rotor speed helping reduce noise and dust. In those environments, servicing priorities often include blade condition, noise control, clean running and consistency of regrind for reuse back into the process.
Repair, upgrade or replace?
Not every machine needs replacing. Many need the right service work, better wear-part discipline and a more realistic maintenance plan. In other cases, the right answer is an upgrade or a process rethink.
Rotajet already positions this well on its public pages through a mixture of servicing, spare parts, rental and modular process upgrades. The company’s UK recycling content highlights retrofit layouts, modular upgrades and Buy, Rent, Retrofit and Contract pathways.
A machine is usually a good candidate for servicing or retrofit if the frame, chamber and drive are fundamentally sound, the output requirement is still achievable and the main issue is wear, setup or process compatibility. Replacement becomes more attractive when capacity is consistently wrong, wear cost has become excessive, or the machine no longer fits the rest of the line.
Buy, Rent or Contract: the commercial route matters too
This is another area where Rotajet has a clear angle. Its size reduction page states that size reduction machinery is available for purchase or rental, and the rental page promotes benefits such as improved cash flow, flexibility, Rotajet-handled servicing and no storage hassle at the end of the project.
That means the article should not end at maintenance. It should show the three practical routes a UK customer can take.
Buy
Buying is the right route when the site needs a permanent capability, wants full control and can justify long-term ROI through in-house processing and lower dependence on external contractors.
Rent
Rental is ideal for urgent capacity, temporary projects, proving a process, replacing a failed machine fast, or reducing upfront capital pressure. Rotajet explicitly markets shredder rental on that basis.
Contract
For businesses not ready to invest yet, contract processing can still be the right stepping stone while throughput, material quality and economics are proven.
Why Rotajet is a stronger fit than a basic service supplier
This is the point you want to land hard, but only once and cleanly.
Rotajet’s public plastics content consistently ties together size reduction, washing, separation, modular plant design, trial work and flexible commercial routes. The company also highlights a Wakefield trial facility for evaluating materials and process suitability. That combination matters because it means the conversation can move beyond “what part failed?” to “what output do you need and what is the line struggling with?”
That is a better SEO message and a better sales message. It positions Rotajet as a UK engineering partner for process performance, not only a reactive repair provider.
Shredder and granulator servicing is not just a maintenance topic. It is a throughput topic, a quality topic and, in many recycling lines, a washing-performance topic too. If the size reduction stage is inconsistent, everything downstream becomes harder and more expensive to control.
That is why a stronger UK servicing offer should cover more than emergency repairs. It should include wear-part strategy, knife and screen management, rotor and drive checks, setup optimisation, material-specific advice and a clear route to Buy, Rent or Contract depending on what the site needs next. Rotajet’s own public offering already supports that broader position through size reduction machinery, granulators, shredders, rental and integrated plastics systems.
If your shredder or granulator is reducing output quality, causing excessive wear, or holding back your washing line, speak to Rotajet about a service review, replacement blades, a rental machine or a full size-reduction upgrade. In the UK market, the strongest result usually comes from treating shredding, granulation and downstream washing as one joined-up process, not as separate problems.
FAQ
1. How often should a shredder be serviced in the UK?
Shredders should typically be inspected monthly and serviced every 3–6 months depending on workload and material type. Heavy-duty recycling operations or contaminated waste streams may require more frequent servicing to maintain performance and prevent costly downtime.
2. How often should a granulator be serviced?
Granulators require more frequent servicing due to high-speed operation. Knife checks should be weekly, sharpening every 100–300 hours, and full servicing every 2–3 months.
3. What are the signs a shredder needs servicing?
Reduced throughput, increased power usage, inconsistent output size, material wrapping, vibration, and frequent blockages all indicate servicing is required.
4. What are the signs a granulator needs servicing?
Common signs include poor particle size consistency, increased fines, overheating, vibration, and higher motor load.
5. What does a full shredder service include?
Knife rotation/replacement, screen inspection, rotor checks, hydraulic system inspection, bearing checks, and drive system maintenance.
6. What does a granulator service include?
Knife sharpening, knife gap adjustment, rotor balancing, screen inspection, bearing checks, and full machine cleaning.
7. Can all brands of shredders be serviced?
Yes — most industrial service providers support multiple brands and can supply compatible blades, screens, and parts.
8. Can all granulator brands be serviced?
Yes — including both Rotajet and third-party machines, with replacement wear parts available.
9. Is it better to repair or replace a shredder?
Repair if the structure is sound and performance can be restored. Replace if energy inefficiency, capacity limits, or wear costs are too high.
10. Is it better to repair or replace a granulator?
If precision can be restored (knives, rotor, alignment), repair is viable. If performance cannot meet required output quality, replacement is recommended.
11. How does servicing reduce energy costs?
Sharp knives and correct setup reduce resistance, lowering motor load and reducing energy consumption per tonne processed.
12. Why is particle size important in recycling?
Consistent particle size improves washing, separation, and final product quality, increasing material value.
13. How does shredding affect washing systems?
Poor shredding leaves contamination trapped, reducing washing efficiency and increasing water and energy usage.
14. What is the difference between shredding and granulation?
Shredding reduces bulk material size, while granulation produces consistent, smaller particles for processing.
Plastic regrind, films, moulding scrap, and pre-shredded materials.
17. How does contamination impact servicing?
Contamination accelerates wear, increases cleaning requirements, and reduces machine efficiency.
18. What is knife rotation and why is it important?
Rotating knives extends lifespan and maintains cutting efficiency before full replacement is required.
19. What happens if knives are not maintained?
Poor cutting, increased energy use, more fines, and reduced throughput.
20. What is rotor balancing?
Balancing ensures smooth operation, reduces vibration, and extends bearing life.
21. What causes shredder blockages?
Overfeeding, incorrect material type, worn knives, or blocked screens.
22. What causes granulator vibration?
Rotor imbalance, worn bearings, or incorrect knife setup.
23. What is preventative maintenance?
Scheduled servicing designed to prevent breakdowns and maintain performance.
24. What is reactive maintenance?
Repairing machines only after failure, often leading to higher costs and downtime.
25. Can servicing improve throughput?
Yes — properly serviced machines can significantly increase processing capacity.
26. How does servicing affect product quality?
Better cutting produces consistent material, improving recyclate quality and value.
27. What industries need shredder servicing?
Recycling, waste management, plastics manufacturing, food processing, and engineering.
28. What industries need granulator servicing?
Plastic recycling, injection moulding, packaging, and manufacturing.
29. What is a slow-speed granulator?
A machine designed for quieter, lower-speed processing, often used in production environments.
30. What is a high-speed granulator?
A precision cutting machine used for producing uniform plastic flakes at high throughput.
31. What is a single shaft shredder?
A slow-speed machine with a hydraulic ram, used for controlled size reduction.
32. What is a twin shaft shredder?
A high-torque machine used for heavy-duty materials and bulk waste.
33. What is a combined shredder and granulator?
A system that performs both primary and secondary size reduction in one machine.
34. Can shredders handle wet or contaminated waste?
Yes, but they require specialised servicing due to corrosion and build-up risks.
35. What is the role of screens in granulators?
Screens control output size and ensure consistent particle production.
36. How do you prevent film wrapping in shredders?
Correct knife setup, anti-wrapping design, and regular cleaning.
37. What are the benefits of renting a shredder?
No upfront cost, quick deployment, and flexibility for short-term needs.
38. What are the benefits of renting a granulator?
Allows testing, avoids capital investment, and supports temporary capacity increases.
39. What is contract processing in recycling?
Outsourcing material processing to a specialist instead of owning equipment.
40. Why choose Rotajet for servicing?
Rotajet provides full system support — from shredding and granulation to washing and integration — ensuring optimal performance across the entire process.
Visit Plastic Washing to learn more or to get in contact with us.
One of the biggest mistakes in plastic recycling is assuming the same washing process will work across every waste stream.
It will not.
The right plastic washing system depends on the material type, contamination level, moisture content, throughput target, downstream process, and required output quality. A washing line built for rigid HDPE containers will not behave the same way when faced with contaminated film, food waste plastics, agricultural plastics, or mixed WEEE streams.
That is why process design matters.
At Rotajet, we focus on engineered plastic washing systems built around the application, not just a collection of standalone machines. Whether the requirement is a full new line, a retrofit to increase throughput, or a more flexible buy or rent route, the process has to match the waste stream.
Why application matters in plastic washing
Different plastics behave differently during washing.
Rigid plastics are generally easier to handle mechanically, but they still carry labels, glue, dirt, oils, and product residue that must be removed efficiently. Films are harder to control, wrap around moving parts, and retain more moisture. Agricultural plastics often arrive loaded with abrasive soil and sand. WEEE plastics introduce mixed polymers and more demanding separation requirements. Food and AD plastics can carry organics, fats, fibres, and liquid contamination that put far greater pressure on the washing process.
That is why choosing a plastic washing line should always begin with the application, not just the capital budget.
A properly matched system can:
improve cleaning efficiency
increase throughput
reduce downtime
reduce wear
lower water usage
improve recyclate quality
increase the commercial value of the finished product
Rigid plastics washing systems
Rigid plastics remain one of the most commercially attractive recycling streams. These materials often include HDPE and PP containers, drums, crates, pallets, totes, and moulded components.
Although rigid plastics are usually easier to process than films, they still need a controlled washing process if the goal is clean, high-value recyclate. Typical contamination includes labels, glue, dirt, light organics, and residual product.
A typical rigid plastics process may include:
size reduction or granulation
friction washing
sink-float separation
dewatering
drying
The exact layout depends on contamination level and final quality target, but the principle stays the same: better washing produces better output.
Film washing is one of the most difficult areas of plastic recycling.
LDPE and LLDPE films are light, unstable, prone to wrapping, and difficult to dry. Poorly designed film washing systems often suffer from blockages, moisture carryover, low throughput, and inconsistent final output.
A successful film washing process often requires:
controlled size reduction
pre-wash where needed
high-intensity friction washing
strong water management
effective drying
Film cannot simply be treated like rigid plastic. The system has to be designed around the material’s behaviour.
This is where application-led engineering makes the difference between a washing line that performs commercially and one that becomes a maintenance problem.
Agricultural plastics are among the harshest waste streams to process.
Silage wrap, mulch film, fertiliser bags, and similar materials often arrive with:
soil
sand
moisture
organics
abrasive contamination
These streams quickly expose weak points in under-specified machinery. Agricultural plastic washing systems usually need robust fabrication, wear-resistant components, strong solids handling, and aggressive washing stages capable of removing heavy contamination without destroying throughput.
The challenge is not only getting the plastic clean. It is also about keeping the line running reliably while dealing with abrasive contamination that causes wear throughout the system.
WEEE plastics create a different technical challenge.
These materials come from waste electrical and electronic equipment and often contain mixed polymers, variable densities, and more demanding separation requirements. In this type of application, washing alone is not enough. Separation accuracy and final purity are just as important.
WEEE systems often require:
controlled size reduction
advanced sink-float separation
multiple washing stages
accurate process balancing
reliable drying
A poorly designed line can reduce output purity, increase losses, and damage the value of recovered material.
Food-contaminated plastics and AD waste plastics are some of the hardest materials to process properly.
These waste streams can contain:
oils
fats
fibres
labels
liquid residue
heavy organic contamination
very high moisture levels
In the AD sector especially, food waste de-packaging can generate heavily contaminated mixed plastics containing up to 50% moisture and 25% organic residue, creating a major recovery and recycling challenge.
This is exactly where a more aggressive washing approach is needed.
Rotajet’s RJ-Turbo is designed for this kind of duty, using high-speed rotor scrubbing to create intense mechanical shear and friction, helping remove food residues, oils, and fats from mixed rigid and film plastics. The same process also supports solid-liquid separation and closed-loop water operation, helping AD plants reduce water demand while feeding recoverable organics back into the digestion process.
For these applications, standard light-duty washing is usually not enough. The process needs to be engineered around:
contamination removal intensity
water recirculation
solids handling
dewatering
drying
This is also where knowledge from broader industrial degreasing systems becomes valuable, because oily and organic-rich contamination requires far more than a simple rinse process.
Mixed post-consumer plastic waste
Mixed plastic waste brings variability at every stage.
Material type, contamination profile, moisture content, density, and feed consistency can all change from batch to batch. The more variable the input, the more important it becomes to design the line as a complete, integrated system.
For mixed post-consumer waste, the key priorities are:
consistent material presentation
strong line balancing
flexible process control
effective separation
reliable drying
In these applications, isolated machines rarely solve the real problem. Integrated process engineering does.
Advanced separation, controlled washing, process accuracy
Food / AD Waste
Organics, oils, fibres, moisture
High-intensity washing, water management, dewatering, drying
Retrofitting plastic recycling machinery to improve throughput
Not every customer needs a completely new plastic washing line.
In many cases, the better commercial decision is to retrofit existing recycling machinery and remove the specific bottlenecks that are limiting performance. This can be a faster and more cost-effective route to increasing throughput, improving cleaning efficiency, and reducing operating cost.
Typical retrofit opportunities include:
adding or upgrading friction washing stages
improving water recirculation and filtration
upgrading sink-float tanks
improving drying performance
replacing worn or underperforming equipment
rebalancing the process to improve throughput
A well-planned retrofit can deliver a major performance improvement without the cost of replacing the full installation.
At Rotajet, we work with customers who already have washing systems in place but need to improve output, reduce downtime, or adapt the process to a changing waste stream.
Buy, rent or upgrade
Different operations need different commercial routes.
Buy
Buying is often the right option for long-term processing operations where ownership, dedicated design, and full line optimisation are the priority.
Renting can be a more flexible option where cash flow matters, demand is seasonal, or a business wants to scale capacity without a full upfront capital commitment.
Across the wider Rotajet group, we also promote flexible rental-led routes for industrial equipment through sites such as DrumWashing.com.
Upgrade
Upgrading existing equipment can be the most commercially efficient route where the main line remains viable but selected stages are holding back throughput, cleaning efficiency, or drying performance.
How to choose the right plastic washing system
Choosing the right system starts with defining the application properly.
Key questions include:
What material are you processing?
What contamination is present?
What throughput is required?
What output quality is needed?
What utilities are available?
How much space is available?
Is the project a new line or a retrofit?
Too many systems are selected on headline price alone. In practice, that usually leads to higher operating costs, lower throughput, more downtime, and weaker output quality.
A properly specified process will nearly always outperform a cheaper but badly matched alternative over the life of the plant.
Why Rotajet’s approach is different
Rotajet focuses on process-engineered solutions.
That means understanding:
the waste stream
the contamination
the required output
the site constraints
the commercial objective
From there, the process can be designed properly, whether that means a full new line, a retrofit to improve throughput, or a flexible buy-or-rent approach.
The goal is not just to supply machinery. The goal is to improve throughput, reduce waste, increase output quality, and make the recycling process more commercially effective.
The right plastic washing system always starts with the application.
Rigid plastics, film, agricultural plastics, WEEE, food-contaminated waste, and AD plastics all place different demands on the process. The more accurately the washing line is matched to the waste stream, the better the results will be in throughput, cleaning performance, output quality, and long-term operating cost.
Whether the requirement is to buy a new line, rent equipment, or retrofit existing machinery to improve throughput, Rotajet focuses on process-led solutions that work technically and commercially.
Frequently Asked Questions
1. What is a plastic washing system?
A plastic washing system is an integrated process used to clean, separate, and prepare plastic waste for recycling into reusable flakes or pellets.
2. Why is plastic washing important in recycling?
Plastic washing removes dirt, labels, oils, food residue, adhesives, and organics, helping improve recycled plastic quality and value.
3. Do all plastics require washing before recycling?
Most post-consumer plastics and many post-industrial plastics require washing before further processing.
4. What plastics can be washed?
Common materials include HDPE, LDPE, LLDPE, PP, PET, ABS, and mixed plastics.
5. What is the output from a plastic washing line?
The output is usually clean plastic flakes suitable for extrusion, pelletising, compounding, or reuse.
6. What is a friction washer?
A friction washer uses mechanical scrubbing at high speed to remove contamination from plastic surfaces.
7. What is sink-float separation?
Sink-float separation uses density differences in water so some materials float while others sink.
8. How does a plastic washing line work?
A typical line combines size reduction, washing, separation, dewatering, and drying into one integrated process.
9. Why is water used in plastic washing?
Water helps loosen contamination, flush debris away, and support density-based separation.
10. What is thermal drying?
Thermal drying removes residual moisture after washing and dewatering.
11. What is the best process for rigid plastics?
Rigid plastics are commonly processed through granulation, friction washing, sink-float separation, and drying.
12. How are plastic films washed?
Film washing usually requires pre-washing, controlled size reduction, friction washing, and specialist drying to control wrapping and moisture retention.
13. Can agricultural plastics be recycled effectively?
Yes, but they often need heavy-duty washing systems capable of handling abrasive contamination like sand and soil.
14. What are WEEE plastics?
WEEE plastics come from electrical and electronic waste and usually require more advanced separation and washing.
15. How are food-contaminated plastics cleaned?
They are usually cleaned using higher-intensity washing, stronger water management, and more effective drying.
16. Why are AD plastics difficult to wash?
AD plastics can contain very high moisture and heavy organic contamination from food waste de-packaging, making them much harder to clean efficiently.
17. What does the Rotajet RJ-Turbo do?
The RJ-Turbo uses high-speed mechanical friction to remove residues, oils, fats, and organics from contaminated plastics, especially in tough applications like AD waste.
18. Can the RJ-Turbo handle mixed rigid and film plastics?
Yes. The AD datasheet specifically positions it for mixed rigid and film plastics in high-organic waste streams.
19. Can a plastic washing system improve recyclate value?
Yes. Cleaner material generally produces a more valuable and more usable recycled output.
20. What throughput can a plastic washing system achieve?
Throughput depends on material type, contamination, moisture, and overall line design.
21. How can I increase throughput in my existing line?
Typical improvements include upgrading friction washing, improving drying, improving recirculation, and removing bottlenecks.
22. What causes low throughput in washing lines?
Poor material presentation, line imbalance, undersized stages, weak drying, and poor water handling are common causes.
23. Can retrofitting improve performance?
Yes. Many lines can be improved significantly by upgrading specific process stages rather than replacing the full system.
24. What moisture level should plastic have after washing?
That depends on the downstream process, but lower residual moisture usually improves extrusion and pelletising.
25. How much water does a plastic washing line use?
Water use depends on the application and the system design.
26. Can water be recycled in washing systems?
Yes. Many systems use recirculation and filtration to reduce fresh water demand.
27. How can water use be reduced?
Water use can be reduced through filtration, recirculation tanks, solids removal, and better process control.
28. Is closed-loop water operation possible?
Yes. Closed-loop or partial recirculation systems are often used to reduce water consumption, and the RJ-Turbo AD application specifically supports integrated water recovery.
29. What is the energy consumption of a washing line?
Energy use depends on motor sizes, heating requirements, throughput, and drying stages.
30. Are plastic washing systems environmentally friendly?
They can be, especially when they reduce landfill, recover useful plastics, and improve water efficiency.
31. How much does a plastic washing system cost?
Cost depends on throughput, contamination, automation level, drying requirement, and separation scope.
32. Is it better to buy or rent?
That depends on budget, project length, and production goals. Buying suits long-term ownership, while renting can reduce upfront cost.
33. What is the ROI of a plastic washing line?
ROI depends on material value, throughput, labour input, operating cost, and the quality of the cleaned output.
34. Can I upgrade instead of buying a new system?
Yes. Many customers improve performance through retrofits and line balancing rather than full replacement.
35. What affects system cost most?
Key factors include material, contamination level, throughput, drying, automation, water treatment, and site layout.
36. How often does a washing line require maintenance?
That depends on contamination level, abrasiveness, operating hours, and system design.
37. What are common maintenance issues?
Wear, blockages, screen damage, bearing wear, and water management issues are all common.
38. Can washing systems handle different materials?
Yes, but the process must be designed around the actual material mix.
39. Can plastic washing systems be customised?
Yes. Most serious systems are engineered around the application, contamination, throughput, and available space.
40. Should material trials be carried out before buying?
Yes. Trials are strongly recommended before a major investment in plastic recycling equipment.
Rotajet Separation Systems for Upgrading Existing Plants
The UK plastic recycling industry is evolving rapidly.
Rising contamination levels, mixed polymer streams, and tighter end-user specifications mean that plastic recycling machinery in the UK must now deliver higher levels of separation, consistency, and efficiency than ever before.
Across the UK, many recycling plants already operate with:
Shredders and granulators
Basic plastic washing lines UK
Drying equipment
Yet they still struggle with:
Inconsistent recyclate quality
High contamination carryover
Inefficient water usage
Reduced material value
In many cases, the limiting factor is plastic separation machinery UK.
This is why more operators are now choosing to retrofit advanced plastic recycling machinery into existing plants, rather than replacing complete systems.
Why Separation Defines Plastic Recycling Machinery UK Performance
In modern recycling operations, throughput alone is not enough.
Material quality defines profitability.
Without effective plastic separation machinery UK:
Mixed polymers reduce recyclate value
Contamination affects downstream processing
Output becomes inconsistent
Processing costs increase
Modern systems are now built around:
High-intensity plastic washing systems
Advanced sink float tanks
Integrated water filtration and recirculation
These operate as a multi-stage process, improving quality at each stage.
Rotajet Plastic Recycling Machinery UK – Built for Retrofit Integration
Rotajet Systems Ltd, based in Wakefield, manufactures plastic washing lines UK and plastic separation machinery UK designed specifically for retrofit applications.
Their systems are modular and integrate into existing plants with minimal disruption.
Integrated Filtration Systems Engineered by Rotajet
Modern Plastic Recycling Machinery UK installations are defined by more than washing performance. They are defined by process control.
Without engineered filtration:
Organic solids accumulate
Polymer fines recirculate
Pumps wear prematurely
Closed-loop systems destabilise
Effluent loads increase
Water consumption rises
That is why filtration is engineered directly into Plastic Recycling Machinery UK systems manufactured by Rotajet Systems Ltd.
Rotajet designs and manufactures plastic recycling machinery in the UK, integrating washing, density separation and water filtration into complete industrial systems — not standalone machines.
Why Filtration Is Critical in Plastic Recycling Machinery UK
Plastic recycling plants in the UK process:
Post-consumer rigid plastics
Film plastics
HDPE and PP packaging
WEEE plastics
AD depackaging waste
During washing, water becomes contaminated with:
Organic residues
Label fragments
Fine plastic particles
Sludge and grit
If this contamination is not removed efficiently, Plastic Recycling Machinery UK systems suffer:
Reduced washing efficiency
Increased maintenance
Re-contamination of cleaned flake
Higher effluent treatment costs
Rotajet integrates industrial filtration into its UK plastic washing systems to ensure stable and repeatable performance.
The Integrated Rotajet Plastic Recycling Machinery UK Process
A typical Rotajet Plastic Recycling Machinery UK system operates in a controlled sequence:
Plastic feed enters the high-speed friction washer. Contaminated water is discharged. Water passes through vibratory screening filtration. Clean water is recirculated into the wash stage. Density separation follows via sink-float technology. Material is then dewatered and dried.
Because Rotajet engineers the full Plastic Recycling Machinery UK process — not isolated equipment — hydraulic flow, screening mesh and contamination load are matched precisely.
Wakefield Trial Capability – Validate Before Investment
All Rotajet Plastic Recycling Machinery UK systems can be trialled at the Wakefield manufacturing facility.
Trial capability allows operators to:
Test real feedstock
Measure contamination removal
Validate filtration efficiency
Optimise screening specification
Confirm throughput performance
This ensures Plastic Recycling Machinery UK installations are engineered around proven data — not assumptions.
Trial validation reduces technical and financial risk.
Factory Acceptance Testing (FAT) – Engineered Before Installation
Before dispatch, every integrated Plastic Recycling Machinery UK system undergoes comprehensive Factory Acceptance Testing (FAT) at the Rotajet Wakefield facility.
FAT includes:
Mechanical inspection
Hydraulic flow validation
Filtration performance verification
Electrical system testing
Safety compliance checks
Customers may attend FAT before delivery, ensuring full confidence prior to site installation.
Rent – Scalable Plastic Recycling Machinery UK Capacity
Rental options support:
Short-term processing
Commissioning phases
Temporary expansion
Reduced capital risk
Contract Processing – Outsource Plastic Recycling Machinery UK Capability
Where investment is not immediately viable, contract washing and filtration services may support ongoing processing requirements.
Why Choose Rotajet for Plastic Recycling Machinery UK?
Rotajet Systems Ltd manufactures Plastic Recycling Machinery UK systems in Wakefield, integrating washing, separation and filtration into engineered industrial solutions.
Working with Rotajet provides:
UK-based engineering support
Wakefield trial validation
Factory Acceptance Testing
Integrated system design
Long-term operational stability
Global supply capability
Rotajet engineers complete Plastic Recycling Machinery UK systems — not isolated equipment.
Frequently Asked Questions – Plastic Recycling Machinery UK
What makes integrated Plastic Recycling Machinery UK systems different?
Integrated systems are engineered with washing, separation and filtration designed together, ensuring stable water recirculation and predictable performance.
Can Plastic Recycling Machinery UK systems be trialled?
Yes. Rotajet offers Wakefield-based trial capability to validate washing and filtration performance before investment.
What is Factory Acceptance Testing (FAT)?
FAT verifies mechanical, hydraulic and electrical performance before Plastic Recycling Machinery UK systems leave the factory.
Are Plastic Recycling Machinery UK systems available for rental?
Depending on application, systems may be supplied for purchase, rental or contract processing.
Visit Plastic washing to learn more or to get in contact with us.
High-Performance Density Separation Systems Manufactured in the UK – Supplied Globally
Modern plastic recycling plants require more than simple flotation tanks. Within a complete https://plasticwashing.co.uk/plastic-washing-lines/, the density separation stage determines final polymer purity, extrusion stability and long-term profitability.
Our industrial sink float tanks are engineered and manufactured in the UK and supplied globally to recycling operations processing rigid plastics, PET flake, film regrind and WEEE materials.
If you are processing:
PP / PE rigid packaging
HDPE regrind
PET bottle flake
Mixed post-consumer plastics
Engineering polymers
WEEE appliance housings
Then your density separation system directly affects:
✔ Polymer purity ✔ Filter change frequency ✔ Pellet resale value ✔ Water consumption ✔ Plant uptime
What Is a Sink Float Tank?
A sink float tank separates plastics based on density using water as the separation medium.
Polyolefins such as PP and PE float, while heavier polymers including PET, PVC and ABS sink. This physical separation principle makes density separation one of the most cost-effective purification methods in mechanical recycling.
Integrated filtration and sediment purge systems reduce operating costs and improve sustainability metrics.
Material Trials Conducted at Our UK Manufacturing Facility
We offer material trials at our UK-based manufacturing facility, allowing customers to test their plastic streams prior to installation.
Trials evaluate:
Float / sink purity Retention time optimisation Contamination challenges Full system integration
Systems are assembled and factory tested in the UK before global shipment.
Manufactured in the UK – Supplied Worldwide
All sink float tanks are:
Engineered and manufactured in the UK
Designed for continuous industrial operation
Supplied globally
Supported with installation and commissioning
UK manufacturing ensures quality control, shorter lead times and long-term technical support.
Frequently Asked Questions
What is a sink float tank used for in plastic recycling?
A sink float tank separates plastics based on density. Polyolefins float while heavier plastics such as PET, PVC and ABS sink, enabling efficient polymer separation within plastic washing lines.
Can sink float tanks process WEEE plastics?
Yes. Sink float tanks are widely used in WEEE recycling to separate engineering plastics from polyolefins and remove mineral contamination before further sorting.
Are material trials available before purchase?
Yes. Material trials can be conducted at our UK manufacturing facility to assess separation performance and optimise system design before installation.
Are the systems manufactured in the UK?
Yes. All systems are engineered and manufactured in the UK and supplied globally.
Visit Plastic Washing to learn more, or to get in contact with us.
Rotajet High-Performance Film & Rigid Recycling Systems
Rotajet Systems Ltd designs and manufactures industrial plastic washing systems in the UK for recycling operators worldwide. Rotajet plastic washing plants are engineered specifically for high-contamination post-consumer and commercial waste streams — not ideal laboratory conditions.
Plastic recycling profitability is no longer determined by bale price — it is determined by wash quality, contamination reduction and moisture control.
Contaminated plastics frequently contain:
Organic residue
Oils and fats
Adhesives and labels
Paper fibre
Moisture levels exceeding 40–50%
Material quality standards promoted by WRAP and the British Plastics Federation continue to push recyclers toward higher-grade outputs and improved material consistency.
To compete, operators require industrial-grade plastic washing equipment built for real-world feedstock.
Why Many Plastic Washing Lines Underperform
Low-energy wash tanks alone cannot:
Remove bonded oils and food residues
Break down adhesive contamination
Reduce moisture efficiently
Prevent film wrapping and blockages
Deliver extrusion-grade flake
Plastic streams can contain 50%+ moisture and significant organic contamination. Without aggressive friction washing and controlled dewatering, output quality remains downgraded.
Rotajet plastic washing systems are designed specifically to solve this.
Complete Rotajet Plastic Washing Line Design
A high-performance industrial plastic washing plant must operate as a fully integrated system.
Size Reduction & Opening
Precision shredding increases surface exposure and prepares film and rigid plastics for effective cleaning.
Typical throughput range: 500 kg/hr to 5 tonnes per hour
High-Intensity Friction Washing – RJ-Turbo
The core contamination removal stage.
The Rotajet RJ-Turbo friction washer operates at 800–1,200 RPM, generating intense mechanical shear by forcing plastics against a perforated basket and against each other.
