| 摘要 |
PURPOSE:To perform a fixed quantity discharge assuredly, and make it possible to seal completely including a content which is always located in the hole of a spout without gap at the time of usage by a method wherein a spout is attached at the tip of a piston for a repetitive motion discharge apparatus with a check valve, and at the discharging tip of the spout, a closing member which functions as a check valve is attached. CONSTITUTION:An upper lid C consists of a fixed upper lid 5 and a discharge apparatus D which is attached to this fixed upper lid 5 and consists of a spring 6, piston 7, cylinder 8, ball 9 and spout 10. For the spout 10, at the discharge side leading tip, a closing member 10' of which one end is foldably supported is integrally formed, and the closing member 10' functions as a check valve. A content is pushed out by repetitive motions of pressing by fingers up to a movable bottom part B comes into contact with the fixed upper lid 5 and release of the pressing. Since the closing member 10' of the spout functions as a check valve, the content which is filled in the container including the hole of the spout without gap under a sealed condition does not touch the outside air. |
