PROPELLANT FILLING DEVICE

摘要

Disclosed is a propellant filling device which reliably fills an aerosol container with a specified amount of propellant, does not produce variation in the fill amount of the propellant, and prevents backward flow of the propellant from the aerosol container to the supply unit even when the aerosol container pressure is higher than that of the supply unit side. The propellant filling device fills with propellant an aerosol container (2) filled in advance with undiluted solution and propellant. A communicating hole (8) is formed in a valve opening member (4) which constantly applies pressure to and opens the valve component (44). Further, a flow tube (11) is disposed above the valve opening member (4), and a valve component (16) is provided which makes it possible to close the flow passage (14) of the flow tube (11). The aforementioned valve mechanism is held in an open state, and when the pressure of the aerosol container (2) is higher than that of the supply unit, backward flow of the aerosol contents is prevented, but when the pressure of the supply unit is higher than that of the aerosol container (2), the propellant can flow into the aerosol container (2).