US Patent 7886508 Medicine packaging apparatus

A distance from a printing section to a heat sealing section of a medicine packaging apparatus is shortened without generating wrinkles on a package sheet. A unfolding guide included in a packaging unit for unfolding and opening a package sheet has a main ridge extending along with the fold of the package sheet, and a pair of unfolding guide surfaces, which are convex curved surfaces stretching from the main ridge and which are symmetrical to each other with respect to the main ridge.