| 摘要 |
Disclosed herein is a propellant filling device that is capable of reliably filling a prescribed amount of propellant into an aerosol container without variations in the amount of the propellant filled into the aerosol container and of preventing the backflow of the propellant from an aerosol container side to a supply unit side even when the pressure in the aerosol container is higher than a supply unit side pressure. The propellant filling device for filling a propellant into an aerosol container 2 containing a liquid concentrate and the propellant previously filled thereinto includes a valve opening member 4 that continuously presses a valve member 44 to open a valve system of the aerosol container 2 and has a communicating hole 8. On the upper end side of the valve opening member 4, a flow conduit 11 is provided. A valve member 16 is provided in the flow conduit 11 to allow a flow channel 14 of the flow conduit 11 to be closed. The valve system is kept in an open state, and when the pressure in the aerosol container 2 is higher than the supply unit side pressure, the backflow of aerosol content is prevented, and when the supply unit side pressure is higher than the pressure in the aerosol container 2, the propellant flows into the aerosol container 2. |
