Closure device for a container

摘要

The invention relates to a closure device ( 10 ) for a container ( 12 ) comprising a filling device ( 14 ) that can be attached to an opening ( 16 ) of the container ( 12 ), and a closure means ( 18 ) that is attached to the filling device ( 14 ) in such a way that the opening ( 16 ) of the container ( 12 ) is sealed when the filling device ( 14 ) is attached to the opening ( 16 ) and that is coated at least partially with polytetrafluoroethylene ( 22 ) on one side ( 20 ) that is accessible from outside the container ( 12 ) in the assembled state of the filling device ( 14 ) on the container ( 12 ).