STRUCTURE OF CAP HAVING INNER CAP

摘要

A cap assembly having a storage chamber for a secondary material includes a main body for detachably fixing on a neck portion of a container, an outer cap detachably coupled to the main body, a spout member inserted in the main body, and an inner cap coupled in the neck portion, the inner cap defining a storage space for the secondary material and being designed to be opened when the spout member moves upward.