Piercing closure capsule for droppers or the like.

摘要

Container (1) of plastic material for the controlled delivery of powders and of liquids as drops, provided with piercing closure capsule (6) actuatable at use time, comprising a body, possibly provided with tabs (7) for in-series interconnection with other containers, having a neck with thread intended for engaging a capsule, provided with axial, cylindrical tubular extension with transversal membrane diaphragm (9) upstream a divergent cone-frustum (4") shaped outlet mouth: a circumferential groove (5) is provided on the outer surface of said extension in the nearby of said diaphragm.