Energy-efficient, healthy LED light for industrial operation

In 2011, the Mibelle Group began converting to LED light at its sites in Buchs and Frenkendorf. LED lights offer many advantages over fluorescence technology and have positive effects on employee health.

  • These photos show two different production halls: in the photo on the left, the hall is still heated with fluorescent tubes. The photo on the right shows a hall after the switch to LED lighting.

  • Ralf Hächler, Plant Operator in Manufacture at the Buchs site, during a nightshift. He is positive about the switch to LED lighting: “Overall, I’m less tired after the night shift.”

It is still standard practice to illuminate production halls with fluorescent tubes. For some years now, the Mibelle Group has been leading the way with its use of LED light. “By 2020, we want to light 80% of our production areas with LED lights. In Buchs, we expect this to be 100%”, says Thomas Aliverti, Head of Infrastructure, Energy & Construction. Today, exclusively LED technology is used in assembly, the staff restaurant and workshop, as well as in some areas of production and preparation. Most of the offices, meeting rooms and the biochemistry laboratory are also fitted with LED lights.

Colour temperature or light colour is expressed in kelvin. Warmer light colours are between 2700 and 3300 kelvin. Neutral white light is between 3300 and 5300 kelvin and bright lights in shops are 5300 kelvin and above. “Our LED lights are set at about 4000 kelvin – an optimum light colour for productive workplaces”, explains Stefan Madörin, Technical Head in Frenkendorf.

Energy-saving, low-maintenance and not harmful to health
LED lights are a unique success story and offer many advantages. On the one hand, they are very economical and consume up to 70% less energy. On the other hand, it is easier to control the light beam or, in other words, the light can be directed to exactly where it is needed for work. Furthermore, LED lights generate less heat and do not emit UV light – this prevents unwanted effects, such as the embrittlement of plastic or colour differences in packaging. In addition to LED lighting, energy-saving presence detectors are installed in the hallways of the packaging materials and label warehouses.

Although LED lights are more expensive than fluorescent lamps, the investment certainly pays off. “LED lights have an extremely long service life and are low-maintenance. On average, an LED light only has to be replaced once every seven years, whereas fluorescent tubes have to be replaced almost once per year” says Thomas Aliverti. However, one of the most important advantages is the positive effect on employee health.

Employees can concentrate for longer
The effect of the high blue component in the LED light spectrum is to reduce the melatonin content in the blood, which is why LED lighting is said to be healthy. Employees can feel this. Thanks to the flicker-free light, the eyes don’t tire as quickly and employees can concentrate for longer. This advantage is particularly apparent when working shifts, which presents an additional stress for the individual. “Employees say that they can concentrate better and don’t get headaches as quickly. Overall, they are less tired,” says Stefan Madörin with pleasure.

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