Manesty tablet presses

Single-stroke Stokes or Manesty model E or model F presses Three- to six-station rotary tablet press (e.g., Korsch)... 

To test the foregoing dimensionless relationship, two powders (Avicel Pl 1101, a ductile, viscoelastic material, and Emcompress, a brittle material, blended with 0.5% magnesium steaiate) were compressed on the PressterTw, a single-station mechanical replicator of rotary tablet presses. In the first set of experiments, a 16-station Manesty Betapress (a research-scale press) was simulated at two speeds, 60 and 100 rpm. In the second set, a 36-station Fette P2090 (a medium-scale production press) was simulated at two speeds, 55.8 and 70 rpm. It should be noted that 100 rpm of the Beta-press corresponds to 55.8 rpm of the Fette 2090 in terms of the linear speed of the turret. Basic parameters for the two tablet presses arc presented in Table 3. 

Tablet press subclasses primarily are distinguished from one another by how the powder blend is delivered to the die cavity. Tablet presses can deliver powders without mechanical assistance (gravity) (e.g., Ronchii, Manesty, Stokes, and Colton machines), with mechanical assistance (power assisted) (e.g., Ronchii, Courtoy, Kilian, Manesty, Kikusui, Fette, and Hata machines), by rotational forces (centrifugal) (e.g., the Comprima machine), and in two different locations where a tablet core is formed and subsequently an outer layer of coating material is applied (compression coating) (e.g., Kilian Manesty, and Kikusui machines).

Oates, R. J., and Mitchell, A. G. (1990), Comparison of calculated and experimentally determined displacement on a rotary tablet press using both Manesty and IPT punches, J. Pharm. Pharmacol., 42, 388-396. 

Literature sources reporting the use of compaction simulators in simulating actual tablet presses are rather scarce. Some studies suggest that, for whatever reason, tablets made on a Manesty Betapress were significantly softer than those made on a compaction simulator using the theoretical Betapress punch displacement profiles.[i" - 251... 

---