The so-called PostPro3D process (PP3D for short) smoothes the surfaces of the components by a chemical treatment and allows a similar appearance as the injection molding process.
Chemical smoothing is used to straighten, seal and improve parts in their mechanical properties, as the notch effect is reduced by the smoothing of the layer tracks.
The surface closes, the components are waterproof and insensitive to dirt, which colored parts are even longer lasting.
The process is applicable to both colored and uncoloured components and can be combined with other finishing processes, as well as for the following materials and manufacturing processes:
Components to be processed come into a closed chamber of the machine, are placed under vacuum and processed with highly soluble alcohol, an organic solvent. The high acid content of the alcohol melts the surface under low temperatures (40 °C).
Most forms can be edited, even complex, invisible grid structures. However, thin long wall thicknesses can only be processed to a limited extent; they can deform due to increased surface tension. The parts must be de-powdered and deblocked before the process. All components should always be touched only with gloves, as, for example, fingerprints after smoothing become visible as dark spots.
The organic solvent used for this process is not flammable and not explosive. It is slightly toxic during the process. The parts, however, are completely free of chemicals. For biocompatible materials, the properties are retained, e.g. in medical products. The chemical process takes place in a closed system, the user does not come into contact with it.