Longer in use: tableting tools with a perfect surface
Pressing tablets is a demanding task depending on the composition of their ingredients and shape. From time to time it is necessary to polish the tools, as the compressed, abrasive powders react with the tool surface and roughen it. The polish reduces the roughness of the press surfaces. A smooth press surface reduces the friction between the stamp surface and the powder, which in many cases enables a higher output of the press. Furthermore, the tendency of the tablets to stick is reduced, thus guaranteeing a proverbially smooth pressing process. The service life of the tools can be significantly increased by polishing and the costs for tools and machine downtimes can be significantly reduced.
Typical form of tablet stamps
Even today, polishing is very often done by hand, which often leads to fluctuating polishing results. The contact pressure on the polishing wheel, the processing time, the amount of polishing paste used etc. depend on the skill of the polisher when polishing by hand. This can lead to large quality differences in shape accuracy and surface quality within a stamp set. These differences can also lead to the sensitive sensor systems of the tablet press responding and interrupting production.
DF Pharma series
With the DF Pharma (DF-P) series, OTEC offers a fast, reliable and established polishing process. The rotary movement of the punches in the polishing granulate means that even difficult geometries can be processed easily and efficiently. The geometries and dimensions of the punches are retained, since only the tips of the roughened surface are removed during the polishing process.
The design, the choice of materials and the structure of the DF-P are specially tailored to the requirements of pharmaceutical production. Series DF-P machines have been used by well-known pharmaceutical manufacturers all over the world for many years.
Up to 120 stamps can be polished automatically at the same time - and that within 30 minutes!
A polishing paste, for example, which is added to a granular carrier medium made of plastic, serves as the polishing agent. For the polishing process, only mixtures of substances that have proven themselves in pharmacy are used. Complex certification processes are thus greatly simplified or can be omitted entirely. Application-specific workpiece holders make a decisive contribution to the perfect machining results and, in addition to optimal fixation of the workpieces, enable quick assembly and easy batch change. The recordings for all common stamp formats such as EU, TSM etc. are available as standard and can be exchanged in no time.
In addition to the DF Pharma series, OTEC also offers machine solutions in which loading and unloading of the system can also be fully automated using robot integration. This enables unmanned operation for many hours.