WASHING | TECHNOLOGY
Pla.to Technology has developed a solution for
bottle-to-bottle recycling of detergent bottles made of HDPE, incorporating a water-saving washing process. The clients for this project were Beiersdorf and the Fraunhofer Institute for Process Engineering and Packaging (IVV). The company says that used shampoo and shower gel bottles have been almost entirely reprocessed without any loss of quality in a water-saving process at the
Pla.to technical facility in Görlitz, Germany. The rHDPE granulate obtained from bimodal HDPE was completely reintroduced into the production cycle, producing new detergent bottles solely from recycled granulate that meet the quality standards of new products. With this development,
Pla.to says that it offers the technol- ogy for a closed HDPE cycle – without the addition of virgin granulate necessary in other processes. “Our solution is a sustainable and water-saving method to fully recycle HDPE in large quantities,” says Managing Director Heinz Schnettler. The company adds that HDPE is very suitable for
numerous applications due to its high stability and tensile strength. In the detergent industry, bottles are typically manufactured by extrusion blow moulding and have a label attached. The cap is
Left: With the help of a dry cleaner,
IMAGE:
PLA.TO TECHNOLOGY
usually made of PP. In its in-house demonstration centre,
Pla.to has reprocessed the used bottles using its own equipment. Before recycling, they are first sorted by colour with the caps and crushed using a granulator. A dry cleaner then removes residual ingredients inside the bottles without any wastewater. Stubborn contaminants are first soaked and then removed from the plastic using friction
contaminants such as paper labels and residual contents are defibred by high accelera- tion and impact forces, says
Pla.to Technology. The system operates without wastewater
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