The Coperion K-Tron Tablet Press Lubricant Feeder is an adaptation of Coperion K-Tron’s sanitary pharmaceutical design twin screw feeder and features the addition of a specialized gas venturi for aspiration of the lubricant direct to the tablet press.
Lubricants (such as magnesium stearate) are used in tablet press applications to reduce the compression force during tabletting, to avoid product buildup on the tablet press tools (dies as well as punches), and to make the tablet surface smooth. Control of the precise amount of lubricant into the process is critical to the overall product quality. If too much lubricant is added the tablet can often become softer than required. This becomes critical in the making of effervescent tablets, where excessive magnesium stearate can actually cause the tablet to repel water, thus affecting the dissolution into water.