The use of compressed CO2 opens a wide range of applications. It is possible to impregnate, extract and foam polymeric components and pre-products.
Up to now surfaces have been modified either by coating the component or by filling the whole volume with the additive during the injection molding. CO2 impregnation offers the possibility to accumulate the additives only in the area near the surface, reducing the input of additives.
Extraction of monomers, fats and oils
Foaming of polymers
Additives for impregnation: Nanoparticles, e.g. silver, titanium dioxide, graphite, dyes and a wide range of other CO2-soluble and insoluble additives
The following polymers have already been treated successfully: PS, PMMA, PVC, PC, PE, PET, PA, TPU etc.