| 摘要 |
A powder container ( 110 ) and dispensing device comprising a powder dispensing nozzle ( 114 ) of the type having one or more small holes through which powder can be ejected. The nozzle ( 114 ) is located in the wall of a container ( 110 ) which in use is partially filled with the powder, and powder is dispensed therefrom by squeezing the container ( 110 ) to pressurize its contents. An intermediate powder reservoir is provided within the container ( 110 ) in or on which some of the powder within the container ( 110 ) becomes lodged in use. On squeezing the container, powder lodging in or on the intermediate reservoir is entrained in the airflow through the hole or holes in the nozzle to be discharged therewith. In general during each discharge action only powder in or on the intermediate reservoir will exit via the nozzle ( 114 ). The action of squeezing the container not only causes powder to leave the intermediate reservoir via the nozzle but also causes other of the powder in the container to replace the powder that has left the intermediate reservoir. In addition or alternatively replenishment is achieved by briefly squeezing, tilting or inverting or tilting and briefly squeezing the container. In this way the intermediate reservoir is replenished during or after each discharge ready to be discharged with the next squeeze of the container. The nozzle is provided at the end of a neck of the container, and the intermediate reservoir may comprise an apertured plate or a filter fitted in the neck of the container just below but spaced from the nozzle.
|
