Tablet tooling Flat faced beveled edge and Flat faced radius edge ….

In past decade the speed of Tablet press machines have been surprisingly increased with introduction of new computerized systems like Automatic weight controls the speeds of most recent tablet press machines have hiked upto 10 lakh tablets per hour  .Flat faced beveled edge and Flat faced radius edge are two tablet tooling shapes we will discuss .

As we achieved these astonishing speed in High speed rotary(HSR) tablet presses the problems paralley occurred in tablets like Capping and Lamination so the requirement arise to make the changes to existing Tablet tooling so as to overcome the tablet compression issues .

Earlier Flat faced beveled edges(FFBE) punches are commonly used in tablet presses as the Bevel resolve the problems of surface erosion of  FFBE(Flat faced beveled edges) tablets during coating . with development in technology we came across the software Finite element analysis(FEA) which is used to analyse the pressure on punch tips using mathematical equations thus we determine how much pressure the punch tip can withhold and this pressure is imprinted on punches as overload pressure .

When FFBE punches are examined using this software it has been found that the pressure of blend during compression is focused on punch tips as we know that in FFBE punches the cup is absent as the compression occurs the blend as well as air entrapped tends to move outward and as it reaches the tips the bevel at the edges moves them inward thus All the pressure is focused on edges/Bevel leading to serious damage of edges as well as problems like Capping and Lamination arise due to air entrapment .

So , the scientists came up with the solution of Flat faced radius edge(FFRE)shape in which instead of bevel on edges radius is provided at angle of 32-45 degrees which expels the air out of punches and pressure at the edges of punches is found negligible when observed in Finite element analysis as we can see in above figure .

Thus, Preventing the Damage to punch tip edges as well as issue of Capping and Lamination is resolved .