Abstract
Experiments of tapping compaction of Cosmetic powders showed good agreement with Taneya's equation. However, this result does not always explain our usual experience in compressibility molding, as the behaviors of fine powders are so complicated.
Caking effect of metal soaps for powders decreased in order of metal-ion radius.
As compared several oils for their binding effect, oils with weaker poarity in chem ical constitution showed more strong effect.
