Abstract
Capping or lamination is an unsolved common problem in tablet manufacturing. Knowledge gaps remain despite an enormous amount of effort made in the past to better understand the tablet capping/lamination phenomenon. Using acetaminophen – containing formulations, we examined the potential use of a compaction simulator as a material-sparing tool to predict capping occurrence under commercial tableting conditions. Systematical analyses of the in-die compaction data led to insight on the potential mechanism of tablet capping/lamination. In general, capping strongly correlates with high in-die elastic recovery, high Poisson’s ratio, low tensile strength, and radial die-wall pressure. Such insight can be used to guide the formulation design of high quality tablet products that are free from capping problems for challenging active pharmaceutical ingredients.
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