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Recycling

FRESHENING THE AIR

RECYCLING / ODOR ADSORPTION


When it comes to sustainability, there is no alternative to the recycling of plastics. Food packaging that is collected from households can emit odors even after the cleaning process and this rules out any further usage. The problem can even affect non-mixed plastics, such as those originating from wastage during industrial production: Since the material is heated during the recycling process, undesirable characteristic odors from adhesives or polymer degradation can arise.


Recycling 2

With the TEGO Sorb® additives, Evonik has developed a plant-based material that counteracts the development of odors even in low concentrations. The material works in accordance with the lock and key principle. Odors are not merely masked, instead TEGO Sorb® irreversibly binds the odor-causin g molecules to each other. This works best for nitrogen or sulfur-based odors.

In many formulations, the addition of just a minimal percentage by volume of TEGO Sorb® to the total mass is usually enough to achieve permanent improvement. This enables recycling manufacturers to use a higher percentage of recycled materials making their products even more sustainable. 

In addition to odor blockers, Evonik supplies many other useful additives, such as anti-foaming agents or wetting agents. These products help to ensure optimal cleaning and separation of the plastic flakes in the recycling process, and enable to remove the paper labels that have been attached to plastics with adhesives more easily.  

Contact

Dr. Pavel Belik

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