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Abstract
A new apparatus was constructed and a method was suggested to measure the tackiness of tablet coating solutions. The method is simple, rapid, reproducible and it can be used to fulfil either researchal or control investigations.
Water solutions/or dispersions/of seven different coating materials widely used in the industry were investigated. On the basis of experimental results it was concluded that increase in concentration of solution led to increase in tackiness. By the evaluation of the data gained from the tack values vs. concentration curves it was possible to choose the concentration of coating solution which proved to be the most favorable from the aspects of both producing requirements and tackiness.
The construction and the evaluation of the so called “Tack curves” showing the change of tackiness in time. The data of these curves add further useful informations to the optimization of the production parameters of coating.