A sustainable recycling design is of great importance to ensure all measures are taken to reduce the amount of plastic waste. Insisting on cost effective co-extrusion technology needs to be kept in mind, while filling faithful business practices, yet simultaneously being conscious of the effect on the environment.

“Our customers can witness live how a lamp housing is made from polycarbonate at the coextrusion profile line,” explains Matthias Sieverding, President of Extrusion Technology at the KraussMaffei Group. A combination of the single-screw extruder KME 60-30 D/P and KME 45-30 D/P produces a light cover that resembles the housing of fluorescent tubes. However, the profile is made of two sections; a coloured floor and a translucent area for distributing light.

The main extruder KMD 133-32/PL produces the foamed intermediate layer with an output of up to 1100 kg/h, while the co-extruder KMD 75-26/PL produces the solid outer layer with an output of up to 240 kg/h. In this concept, a first extruder processes the recycle before a second extruder compounds it. By integrating the process into a tandem system, repeat heating of input materials is not necessary.

Edelweiss compounding system offers obvious advantages regarding energy efficiency as well as a quality finished product. In this concept, a first extruder processes the recycle before a second extruder compounds it. By integrating the process into a tandem system, repeat heating of input materials is not necessary.

We have a large plastic production, producing for the masses, but are conscious of how this affects the environment and encourages sustainable recycling to reduce harm. As a result, this saves energy and reduces the portion of shear energy during plasticizing. The system can be seen at the Competence Forum as a display model recreated true-to-detail and through an augmented reality presentation for more detailed information.

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