Property Function for Product Development

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Abstract
A knowledge of the effects of the physical parameters of solids on the product quality – the property function – is necessary for selective optimisation, to determine the cause of discrepancies and to permit corrections to be made as early as possible in a process. Property functions apply not only to the end products but to every stage of the process. The particle properties of the end product affect the quality, for example the colour strength, while those of the intermediates influence processing properties, for example the filtration resistance and subsequent process stages such as washing and granulation.In order that the property functions can be determined, the properties, performance characteristics as well as physical characteristics, must be quantifiable. Particle measuring technology was initially restricted to the measurement of physical characteristics but is increasingly becoming concerned also with performance characteristics such as the flow behavior of bulk solids and their abrasion resistance. The remaining performance characteristics can either be estimated, quantified or merely treated qualitatively.