C:GRAN
The cutting specialist for wet materials
If the material has a high moisture content, the plastic recycling system C:GRAN is the ideal solution. Flakes or films with a residual moisture up to 12 % are processed in this plastic recycling system without problems thanks to its excellent pre-drying properties.
Description
C:GRAN is distinguished by its enlarged cutter bin with advanced cutting geometry. The combination of a fast-moving rotor blade with efficiently arranged guides ensures a continuous energy input into the material. This ensures that the material is optimally prepared for the subsequent extrusion process. The C:GRAN is also an ideal option for a component of a cascade extruder or a compounding system.
Depending on the application, this machine can be equipped with a wide range of melt filters, such as continuous filters, and-melt-filter, piston filters, backflush filters, etc.
At a glance
- Preparation of flakes and films with residual moisture up to 12 %
- Output rate up to 3,000 kg/h (6,610 lbs/h) depending on type
- Maximum automation thanks to AUTO-Pilot
- Ideal as a component of a cascade or compounding system
- Compatible with a wide range of melt filters
* Output values for LDPE according to NGR company standard, depending on material and quality.
In addition, NGR provides all the equipment for conveying pellets such as blower, pipes, cyclones and much more.
Technology
The operating principle of C:GRAN
The shredding, homogenization and drying/heating of the plastic waste takes place in the cutter bin by rotating blades. Specially arranged feeders ensure additional compaction of the material. The cut and dried material is conveyed into the extruder screw by centrifugal force and feeders.
The automatic intake slider ensures constant extrusion conditions. The advanced extruder screw technology allows gentle melting even at high throughput rates.
Processing of wet materials
Due to the heating of the plastic in the cutter bin, materials with residual moisture (e.g. from washing plants) can also be processed. The material is dried in the cutter bin. At higher residual moisture levels (>5%), Dry-Boost provides additional drying performance.
Optimized material processing
Thanks to the optimal new cutter design and efficiently arranged material guides, the material is well cut, compressed and heated. The high level of processing in the shortest possible time optimally fills the screw and thus provides high output rates with low energy consumption.
Auto-Pilot
Automated from start to finish, the NGR Auto-Pilot controls the feed, the energy input in the cutter-compactor and the extruder load completely autonomously. The sophisticated software intervenes in the process even in the event of minimal quality fluctuations in order to stabilise it without manual operator intervention.
Efficient extruder
Due to the high degree of material preparation and the optimized screw design for every material ensures best possible homogenization and highest output with low energy demand.
Extruder screw
Extruder screw
Specially developed for the challenges of recycling, the extruder screws provide optimum melt homogeneity. The extruder screw, which was designed specifically for use with the cutter compactor, takes the already heated material and provides high output rates.
C:GRAN HMI
Control unit
All equipment functions from feeding to pelletizing are controlled automatically from the easy-to-read NGR touchscreen. Recipes are managed in the operator control unit, which increases traceability, provides ease of use, and ensures equipment parameters are set properly.
High-quality pellets
Pellet size
In addition to high quality, the uniform pellet size also provides for homogeneous mixture in new material. NGR thus plays an indirect role in ensuring consistent quality in the final product.
Add-Ons
Feed-in
Degassing
Pelletization
Filter
Test equipment
Feed-in
Roll feeder
Roll Feeder
With variable feed speed, roll scrap is treated in a process-controlled manner. The virtually unmanned machine is fed continuously. The roll feeder can be operated at the same time with other types of feeding (e.g. conveyor belt).
Conveyor belt
Conveyor belt
The conveyor belt transports the feed material through a metal detector into the feed hopper. The belt is stopped automatically, if metallic matter is detected in order to remove it.
Dosing unit
Dosing unit
Additives such as color pigments, CaCo3, compatibilizers can be added to the material flow in a process-controlled manner. Dosing systems for pellet and/or powdered additives are available.
Degassing
Single Venting new
Single Venting
Designed for light printing and low humidity. The vacuum degassing system includes a vacuum pump and is connected to two venting ports on the extruder.
Double Venting new
Double Venting
Designed for plastics printed, for example, on all surfaces and/or moist plastics. The simple venting unit can be supplemented by another modular unit with two venting openings and an additional vacuum pump.
Cascade
Cascade
The cascade downstream of the melt filtration is equipped with a special degassing zone (Power Venting Section). This guarantees continuous renewal of the melt surface for removing volatile impurities from the melt for highest degassing requirements.
Vacuum pump with closed water circuit
Vacuum pump with closed water circuit
Each venting combination can be equipped with a closed water circuit. The fresh water consumption at the vacuum pump is thereby reduced significantly.
Pelletization
HD pelletizer
Hot-die Waterring Pelletizer (HD)
For thermoplastics with a higher viscosity. The melt exits through the wear-resistant die plate, and is knocked off by the pelletizer blades. The pellets cooled in the water ring are flushed out, dried in the centrifuge and discharged. By adjusting the blade pressure, pelletizer blades provide a long service life; replacement is quick and easy.
Strand pelletizer
Strand pelletizer (SP)
For low-viscosity melts. The melt emerges from strand nozzles, is cooled in a water bath, dried by means of a fan and cut to the desired length in the pelletizer. The result is cylindrical, dust-free pellets with excellent mixing properties.
Automatic strand pelletizer
Automatic strand pelletizer (A-SP)
In addition to the benefits of the SP, the A-SP option offers the added convenience of fully automated start-up. The strands are transported automatically by a water slide to the pelletizer, and the pellets are dried in a centrifuge.
Under Water Pelletizer
Underwater pelletizer (UWP)
For difficult-to-process (e.g. sticky) polymers or thermoplastics with a very high melt flow index. The melt emerges from the die plate and is knocked off by the pelletizer blades. The whole process takes place under water. In the centrifuge, the pellets are separated from the process water and dried.
Filter
Double piston screen changer
Double-piston screen changer
For light impurities. The hydraulically operated double-piston screen changer allows continuous filtration of the melt. This allows a screen change without process shutdown.
Backflush screen changer
Back-flush screen changer
For heavily contaminated materials. The hydraulically operated double-piston screen changer filters the melt in a process-controlled and continuous manner. The integrated backwash device automatically cleans the screens. The number of back-flushes and the related service life of the screens depend on the degree of contamination of the material.
4K Backflush screen changer
4K back-flush filtration
For heavily contaminated materials. In contrast to the standard backflush screen changer with 2 screen cavities, this system is equipped with 4 screen cavities. The double filtration surface with the same frame size results in a longer filter life.
Automatic band melt filter
Band melt filter
For high contamination at high throughput rates. With the lowest melt losses and low filter costs, fully automatic operation ensures excellent filtration results. It is used particularly for post-consumer plastics.
High-performance melt filter
High-performance melt filter
The continuous melt filters in the ERF series are suitable for a wide range of moderate and highly contaminated polymers and provides a pressure constant operation, long screen lifes, very low melt losses and a compact design. By the permanently rotating filter drum foreign particles are being constantly and effectively removed, depending on the application ERF melt filters enables throughputs from 150 to 10,000 kg/h.
Test equipment
Flow scale
Flow scale
The throughput scale is integrated in the machine control system and displays the current production output in kg/h (lbs/hr). The data can be logged in a BDE system.
Gas control unit
Gas control unit
This unit provides quality control by continuously measuring pellet density. Based on preset parameters, the unit determines whether to switch the gates to the second choice or to scrap when this value falls below a setpoint. Monitoring is inline and integrated continuously in the production process.
Online viskosimeter
Online Viscometer
For continuous melt viscosity measurement. Melt is taken from the production extruder, the viscosity is measured, and then the melt is returned to the extruder.
Based on the differential pressure across the capillary, the viscosity of the material (IV value, MVR) is determined by means of a stored recipe.
Material samples
Gallery
Images
Solid engineering, high-quality materials and precise execution ensure a long service life for equipment.
Maintenance-friendly access to moveable parts allows you to quickly change material, efficiently disassemble and assemble wear and tear parts, and minimizes downtime.
The high-speed rotating blades combined with the efficiently arranged guides in the cutter bin ensure fast energy input and heating of the shredded plastic.
Testimonials
Capital Polymers is beyond ecstatic with our very first NGR. We are so happy with how our NGR runs and how user friendly it is. We were blessed with the best technicians, they were so helpful with training our team and the installation was very quick and professional. We are looking forward to adding more NGR’s in the future.
Jimmy Hearod, General Manager
Capital Polymers, USA
Support
Our all-round service – satisfaction included
Excellent technology calls for excellent service. Our 100% commitment to flawless service ensures maximal cost efficiency and minimal downtime.
Our services
- Service hubs for the fastest possible processing of all maintenance and repair work
- Spare parts centers for flexible responses to strong markets
- High spare parts availability thanks to particularly high stock levels in Europe and North America
- Worldwide extruder screw production for short-term production or repairs
- Starter and spare parts packages for every new machine
NGR Applications & Solutions
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Video
C:GRAN + Cascade extruder with Power Venting: The perfect solution for processing of fluffy and wet materials with a wide range of filtration solutions for any application. Fully automated, flexible material handling, high output rates.
