Communicating duct for containers, has connecting portion presenting internal bridging surface departing from outlet portion and converging towards longitudinal axis of tubular unit

摘要

The duct has one tubular unit (12) anchorable to an outlet portion (7) of a container (4). One connecting portion (9) presents a connecting area (9a) united hermetically with the outlet portion. The connecting portion presents an internal bridging surface (13) departing from the outlet portion and converging towards a longitudinal axis of the tubular unit (2).