Energy efficiency in packaging printing: drying with heat recovery
LK Metal references
LK Metal references
– Customer: Hepack GmbH
– Location: Neuenstein
– Sector: Packaging printing / Folding carton production
– Technology: Heat recovery, wood chip heating, combined heat and power unit
– Air flow rate: Supply air approx. 8,200 m³/h, exhaust air approx. 15,600 m³/h
– Temperatures: Supply air 70 °C, drying 85 °C
– Energy savings: approx. 30 %.
Hepack GmbH, a company specializing in packaging printing, has invested in two new Speedmaster XL 145 presses from Heidelberger Druckmaschinen. An efficient combination of infrared and hot-air drying was required to reliably dry the water-based dispersion coatings. Despite the modern machine technology, the energy requirements of the dryers remained a key optimization potential.
LK Metallwaren developed a customized heat recovery and heating concept that uses the waste heat from the dryers and integrates regenerative energy sources. The hot exhaust air is used to heat the supply air via
Two compact process technology systems from LK Metallwaren control the air flows precisely via frequency converters and keep the temperatures constant thanks to demand-controlled PWW registers. This means that only a small proportion of the final temperature is generated directly in the dryer.
After six months of operation, Hepack was able to reduce the energy requirement for paint drying by around 30 %.
Thanks to the combination of heat recovery, CHP utilization and biomass heating, the plant has become a showcase project for energy-efficient packaging production.
“For the sake of the climate.”
For drying processes
– Heat exchanger without moisture transfer
– Environmentally friendly heating with CHP or wood chip heating possible
– Robust, corrosion-resistant materials
– Individually manufactured for drying processes
Make a non-binding inquiry and let us convince you of our efficiency, quality
and individual planning!
