The use of machines in the ReWork process places high demands on quality, machine safety and hygiene standards. For this reason, we have developed drainage presses specially optimized for ReWork applications, which are HACCP-compliant and achieve the highest material throughput rates with maximum reliability. With a production of 300 mm pellets the PUEHLER G.300 ReWork achieves an output of up to 8 m³ material per hour. It can be operated fully automatically and can be loaded via container tipping devices, forklift turning devices, conveyor belts or manually by hand. Thanks to its modern Siemens SPS control system PUEHLER presses can be seamlessly integrated into your production line.
Contents separated from packaging are safely and cleanly discharged without contamination by a level-controlled pump attached to the collection tray. The pressed out liquid or paste can then be conveniently used in the production process. With a residual moisture of approximately three to 30 percent, the packaging is available for subsequent recycling processes. Thanks to the fully automatic cleaning system, machine maintenance and cleaning is very user-friendly. The modern machine design in stainless steel also makes the press resistant to many foreign materials.
With ReWork presses from WEIMA you can automate your ReWork process. For example, faulty products can be transferred directly into the PUEHLER drainage machine with a conveyor belt. There the contents are separated from the packaging and discharged. The empty packaging is compressed and can then be collected and recycled.
In hygiene-critical food production, the prevention of microbial contamination of the product is particularly important. Thanks to the cleanable design, WEIMA drainage presses guarantee food safety, meet hygiene standards and simplify cleaning procedures. Idle times can thus be minimized. The integration of the drainage press into your HACCP concept (Hazard Analysis Critical Control Point) ensures that you avoid hazards in the production process.
The ReWork presses from WEIMA drain and compress filled disposable packaging in one step. You can efficiently dewater, separate and compress beverage cans and containers, TetraPaks, yoghurt pots, spray cans, soft packaging as well as bottles and packaging made of PET. The extracted product can then be returned to the production line in a rework process step and reused profitably.
The integrated cleaning system cleans the dewatering press fully automatically. Nozzles inside the machine clean the rework press at up to 20,000 l/h. The integrated software controls the process.
Sensors are attached to the collection tray to provide information on the fill level. The liquids are pumped off in a controlled manner.
The pre-cleaning system with special Cleaning-in-Place (CIP) piping provides reliable cleaning without dismantling the system or components. The press is pre-cleaned via 15 nozzles, which are installed in the hopper, pressing chamber, hopper tube, cylinder tube, slide unit and under the hopper tube. For the closed pre-cleaning process the cover of the press is divided in two parts. The rework press can be optimally maintained and cleaned via five manholes.
A screw pump transports the dewatered liquid or paste directly at the machine.
During post-compaction, product residues can escape from the packaging and come into contact with packaging ink. To prevent these residues from contaminating the rework material, a second collection tray is installed under the discharge pipe. From there, the pressed-out material is drained off laterally and can then be disposed of. The peroxide cross-linked seals in the cylinder tube also prevent contamination of the pressed out products due to their double sealing security.
With the needle rollers, also called perforating rollers, packages can be opened gently. The rollers can be optimally adjusted to your product sizes by individual adaptations.