DISPENSER FOR AEROSOL FOAMS AND THE LIKE, HAVING A POST-EXPANSION CHAMBER

摘要

A dispenser device for liquors, pastes or foams and the like fluid materials comprises a reservoir (10) for fluid material, an outlet (12) for said reservoir and an outlet passage (18) to connect the reservoir outlet with an outlet orifice (19) of the device. Means (21) defining a post-expansion chamber are provided between the reservoir outlet and said outlet orifice to prevent material from escaping from the outlet after use. The post-expansion chamber is configured to increase in size once actuation of the device has stopped.