Conference Papers

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Comparison of MAIC with Traditional Mixing Techniques for Addition of a Silica Flow Aid

Tim Freeman, Katrina Brockbank, Jamie Clayton (Freeman Technology) and William A. Hendrickson, Charles R. Bowman, Christopher J. Rueb, Robert G. Bowman (AVEKA Inc)

This study compared MAIC with V-blending through comparison of the flow properties of the substrate after the addition of silica. ...

The Development, Operating & Measurement Protocols for an Advanced Uniaxial Tester

Tim Freeman, Managing Director, Freeman Technology

Traditionally, the routine application of uniaxial testing has been compromised by practical challenges. The development of the Edinburgh Powder Tester ...

The Flowability of Wet and Dry Powders

Reg Freeman, Freeman Technology

This paper looks at why powder characterisation is important, and that whilst powders are used so extensively throughout the pharmaceutical ...

Advanced Powder Characterisation Techniques for Process and Product Development

Tim Freeman^1, Brian Armstrong^1 ^1Freeman Technology

There are now technologies available that can assist in measuring relevant powder properties, this paper illustrates how recent developments in ...

Will a Change in the Weather Shut my Process Down? – The evaluation of the effect of humidity on the flow properties of powders

Tim Freeman^1, Brian Armstrong^1 ^1Freeman Technology

This paper will describe the impact of exposing powders to increasing humidity by evaluating the changes to the powder flow ...

The Characterisation of Bulk Material Properties – the Need for a Multivariate Approach

Tim Freeman^1, Reg Freeman^1, Brian Armstrong^1 Freeman Technology

This paper will cover the measurement of dynamic, bulk and shear properties of powders and how a comprehensive knowledge of ...

The Characterisation of Powder Properties in the Pharmaceutical Industry - The Implications of QBD for Solids Dose Manufacture

Tim Freeman^1, Reg Freeman^1, Brian Armstrong^1 ^1Freeman Technology

This paper illustrates how recent advances in powder characterisation allow process engineers to predict material behaviour during processing and how ...

Capsule Filling Performance of Powdered Formulations in Relation to Flow Characteristics

Tim Freeman^1, Xiaowei Fu^1, V. Moolchandani^1, S.W. Hoag^2 ^1Freeman Technology, Welland ^2School of Pharmacy, University of Maryland, Baltimore, MD21201, USA

This study examines the ejection force and the dosing weight variation during a capsule filling process for twelve different formulations ...

The Influence of Powder Flow Properties on the Filling of Dies and Capsules

Tim Freeman^1, Jamie Clayton^1, Xiaowei Fu^1 ^1Freeman Technology

This paper describes an approach to evaluating the suitability of powder properties based on Process Analytical Technology and Quality by ...

Consolidation of Powders - how to evaluate the effect of vibration induced powder compaction through flow property measurement

Tim Freeman^1, Brian Armstrong^1 ^1Freeman Technology

This paper will present comparisons between the Carr's Compressibility Index/Hauser Ratio and the Consolidation Index, derived from Dynamic testing, for ...

Characterisation of Powder Bulk, Dynamic Flow and Shear Properties in Relation to Die Filling

R E Freeman and X Fu, Freeman Technology

The bulk, dynamic flow and shear properties of tungsten, aluminium and two types of glass beads are investigated and correlated ...

Measuring Powder Characteristics relating to Forced Flow into Confined Spaces using a Universal Powder Tester

Tim Freeman and Xiaowei Fu, Freeman Technology

Very cohesive powders can behave like a fluid when pressurised or subjected to forced flow. Such powders may extrude like ...

Measuring Shear Properties and Normal Stresses Generated within a Rotational Shear Cell for Consolidated and Non-Consolidated Powders

R E Freeman, J R Cooke and L C R Schneider, Freeman Technology

Powder behaviour and particularly the measurement and prediction of powder flow properties remains of great importance to industry. This study ...

Volumetric Dosing Efficiency in Relation to the Bulk, Flow and Shear Properties of Powders

Reg Freeman & James Cooke, Freeman Technology

This study examines the efficiency of volumetric dosing for a number of different powders and shows how the results correlate ...

Flowability of Powders and the Effects of Flow Additives

R E Freeman and J R Cooke, Freeman Technology

A study of how the bulk and flow properties of potato starch and corn starch are affected by small amounts ...

Measuring the Flow Properties of Consolidated, Conditioned and Aerated Powders - A Comparative Study using a Powder Rheometer and a Rotational Shear Cell

Reg Freeman, Freeman Technology

A comprehensive study of the flow properties of six powder types comparing the rheometer flow energy measurements with shear properties ...

The Importance of Air Content on the Rheology of Powders - an Empirical Study using the FT4 Powder Rheometer

A study of how the rheological properties of powders are greatly influenced by the presence or absence of air.

A Study of the Flow Properties of Toners in Relation to Physical & Environmental Factors

Reg Freeman, Freeman Technology

A study of the flow properties of a range of magnetic toners produced from a common base in relation to ...