Klingele Paper & Packaging Group is breaking new ground in climate control for production halls at its Grunbach site, near Stuttgart in Germany, thereby improving working conditions for employees. Since September 2024, an innovative adiabatic (heat-tight) cooling system has been in operation, which will demonstrate its full effectiveness for the first time during the upcoming summer months. Unlike conventional air conditioning systems, this system uses evaporative cooling and is largely powered by self-generated solar electricity.
During the processing of corrugated base paper into corrugated cardboard, temperatures around 30 degrees Celsius are possible in summer. The new adiabatic cooling system primarily reduces temperature in the machine working areas. Due to the reduced ambient temperature, the machines are also less susceptible to malfunctions. “This ensures a more pleasant room temperature for employees,” says Ulrich Metzger, plant manager at the Grunbach site.
Efficient cooling through evaporative technology
Unlike conventional air conditioning systems, the adiabatic system uses evaporative cooling for temperature reduction. Water flows over a honeycomb grid while warm outside air streams over it. The air transfers heat to the water, which evaporates and thereby cools the air. This process enables effective temperature reduction with minimal energy input, as only fans and pumps need to be operated.
“The technology of adiabatic cooling has developed enormously and is today a more sustainable and powerful alternative to classic cooling systems,” explains Alexander Stark, Energy Management Officer at the Grunbach corrugated plant. Through his comparison of various climate systems, the decision was made for this innovative cooling technology from INFRANORM® Technologie GmbH from Austria. Alexander Stark completed his training as a packaging technologist at Klingele in 2020 as the state’s best graduate and has always distinguished himself through special commitment to Klingele’s values. He has since also successfully completed his Bachelor of Engineering in Sustainable Science and Technology / Packaging Technology.
Modern energy concept for reliable corrugated products
The cooling system is the latest addition to Klingele’s high-performance processing machines, with which the company sustainably optimizes its processes and offers customers efficient and recyclable packaging solutions. The system is operated largely with electricity from its own photovoltaic installation.
“Overall, around 88 percent of the energy used for production in the Klingele Group comes from renewable and alternative fuels. The introduction of this energy-efficient and innovative cooling technology fits perfectly into our holistic energy concept,” emphasizes Ulrich Metzger. With this investment, Klingele is sending a clear signal for greater environmental compatibility, modern production standards, and good working conditions for employees at the processing machines for manufacturing corrugated packaging.
Recyclable packaging solutions for transport, trade and e-commerce
At the Grunbach site, Klingele produces packaging solutions for transport, trade, and e-commerce that are manufactured with state-of-the-art technology and can be recycled after use. Individually printed folding boxes and cartons strengthen brand impact and contribute to visibility in retail. A large proportion of the corrugated packaging manufactured at Klingele consists of shelf-ready packaging. They offer product protection, easy handling, and attractive product presentation at the point of sale. Through stable construction and effective printing, they increase visibility in retail and support product sales.
“Our customers need process-reliable and environmentally friendly packaging. With our know-how and state-of-the-art machines, such as here at the Grunbach site, we help our customers produce more efficiently and sell more successfully,” adds Ulrich Metzger.
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