Brochure Request
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Conference Papers |
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| Volumetric dosing efficiency in relation to the bulk, flow and shear properties of powders |
Reg Freeman & James Cooke - Freeman Technology |
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| Presented at PARTEC 2007, Nuremberg, Germany - March 2007. |
| This study examines the efficiency of volumetric dosing for a number of different powders and shows how the results correlate with the powder properties measured using the FT4 Powder Rheometer. |
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| A Study of the Flow Properties of Toners in Relation to Physical & Environmental Factors |
| NIP19 International Conference on Digital Printing Technologies, Sep/Oct 2003 - September 2003 |
A study of the flow properties of a range of magnetic toners produced from a common base in relation to three physical variables - the milling method, the type and amount of flow additive and to a limited extent, particle size. |
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| The Importance of Air Content on the Rheology of Powders - an Empirical Study using the FT4 Powder Rheometer |
| Particulate Systems Analysis 2003, Harrogate, UK - August 2003 |
A study of how the rheological properties of powders are greatly influenced by the presence or absence of air. |
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| The Flowability of Wet & Dry Powders |
| 20th Pharmaceutical Technology Conference - April 2001 |
Overview of powder characterisation needs in pharmaceutical industry. Flow rate sensitivity of spray dried and hydrous lactose. How aeration and consolidation affects flow performance. How magnesium stearate affects the flowability of lactose. Characterising wet granulated blends of Avicel/lactose. |
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| Flowability of Powders - an Empirical Approach |
| International Conference on Powder and Bulk Solids Handling - IMechE - June 2000 |
Reviews flowability issues, describes the FT4 operating principle and includes case studies concerning flow rate, compaction, attrition and segregation of some powders. |
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| Formulation Optimization For Tabletting Applications |
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| Pharmaceutical Solutions Update, November 2007 |
Tablet production is an essential operation for the pharmaceutical industry, considering the majority of drugs are being delivered in this form. Tablet presses operating on the principle of direct compression have been developed over several decades and it is now possible to make in excess of one million tablets per hour. Developing formulations that process well in these units to consistently deliver uniform tablets with the required properties, remains an ongoing challenge. |
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| Going with the Flow |
| Published in PPCJ October 2006 |
Powder Coatings - the importance of specifying, monitoring and controlling powder flow properties. |
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| Understanding Powder behaviour by measuring Bulk, Flow and Shear Properties |
| Pharmaceutical Technology Europe, September 2006 |
A review of pharmaceutical processing and the relevance of powder properties in relation to four types of lactose varying from finely milled to spray dried. |
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| Testing Powders in Process Relevant Ways |
| Published in Powder Handling & Processing, Vol. 18, No 1, March/April 2006 |
A review of some everyday processing issues and how knowledge of key powder properties can be correlated with processing experience to improve productivity and product quality. |
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| The Importance of Air Content on the Rheology of Powders: An Empirical Study |
| Published in American Laboratory News - November 2004 |
Powders are sometimes considered to be relatively stable entities like the individual solid particles that make up their mass. This is not the case however, since their rheological properties can change by factors of between 100 and 1,000 in the presence of air. This paper describes how a powder can be characterized in relation to air content using methods that provide reproducible data from which databases on powder flow properties can be created.
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| Measuring the Rheology of Difficult Materials |
| Published in Applied Rheology - November 2000 |
'Difficult materials', FT4 principle and data analysis and the comparison of different types of materials including Newtonian, pseudo plastic, dilitant and many types of powders.
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| Classification of Powders |
| Published in Powder Handling and Processing - June 2000 |
General paper describing the FT4 and the operating principle. Five types of powders are compared in relation to their flow rate and compaction indices.
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| Titanium Dioxide |
October 2002
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Flow properties study of untreated and two types of treated titamium dioxide powders. |
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Evaluation of 5 types of gypsum powders showing how flow properties depend upon flow rate, compaction, aeration and moisture as well as basic flowability measurements. |
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Evaluation of standard and micronised talcum powders showing how flow properties depend upon flow rate, compaction, aeration and de-aeration as well as basic flowability measurements. |
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| Lactose / Magnesium Stearate |
October 2000
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How magnesium stearate affects the flow properties of Lactose. |
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Validation of shear testing using the FT4 Powder Rheometer and limestone powder CRM 116 |
May 2005 |
James Cooke and Tim Freeman |
Freeman Technology, Welland, Worcs, UK |
This study validates shear tests carried out using an FT4 Powder Rheometer fitted with a shear cell using a standard CRM 116 limestone powder. Yield loci at the four pre-shear normal stresses as laid down in the standard were derived and shown to be within 5% of the standard and well within it's uncertainty tolerance. |
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Developing multicolored powder primers at PSA Peugeot Citroën |
March 2005 |
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Claire Pichon and Nicolas Guillot |
PSA Peugeot Citroën |
Cyril Conesa |
PSA Peugeot Citroën and Compiègne University of Technology |
Pierre Guigon and Khashayar Saleh |
Compiègne University of Technology |
This article discusses how France-based PSA Peugeot Citroën developed multi-coloured polyester-epoxy powder primers for use on cars produced at it's newly renovated Mulhouse paint shop, one of the first lines in Europe to use coloured powder primer coats. The article explains how two key measuring devices including the FT4 Powder Rheometer helped the automaker overcome powder flowability problems.
The article can be downloaded by clicking on the icon on the right.
To go to the Powder Coating magazine's website click here.
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Characterisation of wet masses using a powder rheometer (abstract)
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September 2002
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O.E.Cassidy and W.I.Thomas |
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Pharmaceutical Technology, Pharmacia, Northumberland, NE61 3YA, UK
Given at the British Pharmaceutical Conference 2002
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An assessment of novel lubricants using the FT4 Powder Rheometer (abstract)
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September 2002
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J.Fraser, A.Basra, D.Gill, L.Trespidi* and D.F.Bain |
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Quintiles, Heriot Watt University Research Park, Edinburgh, EH14 4AP, UK and
*Shire Pharmaceuticals, Hampshire Int. Business Park, Chineham, Basingstoke, RG24 8EB, UK
Given at the British Pharmaceutical Conference 2002
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| An Experimental evaluation of Powder Rheology |
September 2001
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O E Cassidy and W I Thomas |
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Pharmaceutical Technology, Pharmacia, Northumberland, NE61 3YA, UK
Given at the British Pharmaceutical Conference - 2001 |
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More literature to follow
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