JRA3 large roll unwinder for thermoforming packaging machines
JRA3 large roll unwinder - High-performance unwinder for thermoforming packaging machines
The JRA3 large roll unwinder is a robust and powerful unwinder unit for use on forming, filling and sealing machines (thermoformers), particularly in the food packaging industry. Its hygienic design and well thought-out construction enable efficient processing of film rolls with different specifications.
Design features and functionality:
- Ergonomic loading: Folding side arm for convenient roll loading from the operator's side.
- Control cabinet & controls: Front-mounted controls for lifting device and brake, easily accessible to the operator.
- Hygienic design: Made entirely of stainless steel except for a few components, suitable for demanding production environments.
- Installation: Flush left in front of the thermoforming packaging machine.
Technical specifications:
- Maximum roll diameter: 1,000 mm
- Bottom film width:
- Mechanical mandrel: 360 - 660 mm
- Pneumatic mandrel: 320 - 660 mm
- Maximum film roll weight:
- 450 kg (for Ø 800 mm)
- 700 kg (for Ø 1,000 mm)
- Maximum pull-off length: 800 mm
- Cycle output: Up to 15 cycles/min
- Electrical connection: 230V / 50Hz via the packaging machine
- Pneumatic connection: 6 bar
Features and options:
- Electrically driven lifting device:
- Single electric cylinder for rollers up to 450 kg
- Two electric cylinders for rolls up to 700 kg (retrofitting possible)
- Pneumatic brake for the film mandrel for precise control of unwinding.
- Frequency-controlled drum motor for uniform film unwinding.
- Dancer arm with spring mechanism, optionally with pneumatic compressed air support (stainless steel cylinder).
- Film mandrel variants:
- Mechanical mandrel for 3“ or 6” film cores
- Optional pneumatic mandrel for 3“ or 6” cores
- Optional extensions:
- Second roll holder for processing residual quantities to reduce machine downtimes.
- Adhesive table for easier film splicing when changing rolls.
- Sensory detection of the end of the film for early signaling of a roll change.
- Mirrored design for flexible mounting options.
- 90° deflection for specific machine layouts.
- Film transport trolley for easy roll change and transportation.
Additional unit for film widths up to 800 mm
In addition to the standard model of the JRA3 for film widths of up to 660 mm, a separate variant is available for film widths of up to 800 mm. This unit offers the same performance features as the standard model, but is specially designed for larger film rolls.
Communication with the packaging machine: The JRA3 large roll unwinder transmits the following signals to the packaging machine via potential-free contacts:
- Fault message
- Film end
- Small roll diameter
Conclusion
The JRA3 large roll unwinder is an efficient and adaptable solution for modern packaging lines. Thanks to its robust design, high hygiene standards and numerous options, it is ideal for demanding production requirements.
