Microdosing of extremely cohesive powders

Rubrik: Maschinen- und Anlagenbau

(Treffer aus TechnoPharm, Nr. 05, Seite 236 (2022))

Wilhelm D | Sternberger-Rützel E

Microdosing of extremely cohesive powders / Comparison of standard feeding technology vs. sonication feeding technology · Wilhelm D, Sternberger-Rützel E · Harro Höfliger Verpackungsmaschinen GmbH, Allmersbach i.T.
Microdosing of cohesive powders Fluidization by sonication Standard feeding by vibration feeder Lacto-Sphere MM3 is a micronized lactose by Micro-Sphere SA, Switzerland, which was used for all trials ( fig. 1 ). MM3 has a very low particle size distribution with D10=0.51 μm, D50=1.77 μm and D90=4.38 μm. The powder is extremely cohesive with Carr’s Index of 36 with bulk density of 0.21 g/ml and tapped density of 0.33 g/ml. Characterization using FT4 Rheometer results in an observed compressibility of 49.2 % (at 15 kPa), which is very high, and a Δ(15–1 kPa) of 29.6 %. The observed permeability was very low with a pressure drop of 24.8 mbar at 15 kPa. The ...