| 摘要 |
PURPOSE:To keep freshness after opening by preventing the suction of air due to the restoration of a tube, by holding the contracted state of the tube due to air emission as it is by an elastic member. CONSTITUTION:A leaf spring 3 in a state expanded into a C-shape is pressed to the side surface of a tube 1 filled with content through a press plate 5 and the other end thereof is applied to a lever 4. When the lever 4 is pushed, the content pressed by the leaf spring 3 and the press plate 5 is extruded. A nozzle 6 is opened on one side of the lever 4 to emit the pressed content from the nozzle 6. When the lever 4 is separated, the lever 4 is returned by the restoration force of the leaf spring 3 and the nozzle 6 is also closed and the leaf spring 3 is moved backwardly by the quantity for the reduction of the content to shorten the distance between the lever 4 and the tube 1. Therefore, the lever 4 is present at a constant position regardless of the reduction of the content. |
