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Related Experiment Video

Updated: Jun 11, 2026

Formation of Dispersible Taohong Siwu Tablets

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Published on: February 3, 2023

New insights into segregation during tabletting.

S Lakio¹, S Siiriä, H Räikkönen

¹Division of Pharmaceutical Technology, University of Helsinki, P.O. Box 56 (Viikinkaari 5E) 00014, Finland. satu.lakio@helsinki.fi

International Journal of Pharmaceutics

|July 6, 2010

Summary

This summary is machine-generated.

This study found that smaller granule sizes generally improve tablet compression, but particle size alone doesn't determine tablet quality. New analytical methods revealed distinct patterns in compression force data during tabletting.

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Area of Science:

Pharmaceutical Technology
Materials Science

Background:

Tablet compression is a critical step in pharmaceutical manufacturing.
Understanding granule properties is essential for optimizing tablet quality.

Purpose of the Study:

To investigate the impact of granule size distribution on tablet compression.
To develop novel analytical methods for evaluating entire batch compression data.

Main Methods:

18 batches of theophylline and lactose granules with varying size distributions were compressed.
An instrumented eccentric tabletting machine recorded upper and lower punch forces.
Mathematical techniques were applied to analyze compression data, identifying undulation phenomena.

Main Results:

Two types of undulation were observed: short-time scale (tablet-to-tablet variations) and long-time scale (process-wide changes like segregation).
Smaller particles generally exhibited improved tabletting properties, up to a certain threshold.
Granule tabletability is influenced by factors beyond just particle size.

Conclusions:

Granule size distribution significantly affects tablet compression dynamics.
The developed analytical methods provide new insights into tabletting processes.
Optimizing granule properties requires considering multiple factors, not solely particle size.