Production processes - Sustainability - About us - Concept Wiesner-Hager

Environmentally relevant production processes

Energy-saving wood chip extraction 

  • Automatic adaptation to the required extraction capacity
  • Lower power consumption (-30% corresponds to 80 kW)
  • Lower heat demand due to 100% hot air recovery in the heating period
  • Lower dust loads for employees and ambience (0.1 mg/m³)


Installation of recycling facilities in the wood-varnishing

Conventional paint

Direct recycling

The direct recycling process implemented in important parts of production made it possible to substantially cut energy and material input and simultaneously reduce waste accumulation. It is part of the extensive environmental scheme that has marked the turnaround in Wiesner-Hager's environmental policy since the late 1980s. For example, by introducing ultrafiltration of the lacquer overspray plus material recovery in wood lacquering we could save up to 70% of the lacquers and were able to slash the accumulation of paint sludge. At the same time we also introduced eco-friendly water-based paints - a significant step towards the reduction of VOC emissions. Metal surfaces are provided with emission-free powder-coating. In this case, too, almost 100% of the overspray is recovered and reused by means of state-of-the-art colour change systems.

Technologies to reduce wastewater

  • 3-step cascade flushing technology in metal pretreatment
  • Oil separator and filter technologies for longer service lives of the treatment baths
  • Modern wastewater treatment plant with automatic sampling device and measured value recording

Solvent emmissions from 1990 to 2017

Efficient: producing our own energy at the company site

In terms of energy supply, too, Wiesner-Hager relies on the principle of sustainability. Wood chips from production are used in the company’s own energy centre to produce energy by means of combined heat and power generation. The green electricity generated from biogenic fuels is fed into the public power grid, and the waste heat is used in the factory for heating and process heat purposes.

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