| 摘要 |
PROBLEM TO BE SOLVED: To prevent contents or open air from flowing back into a tube due to restoring force of a tube body after contents are squeezed out of a tube container to cause the contents to be altered. SOLUTION: A lower check valve receive 3 having a valve hole 2 is provided on a dispense-opening 1 of a tube container, and also a valve 6 coming into tight contact from upward with the valve hole 2 of the valve receive 3 for closing is hung down from an upper check valve 5 having a dispense port 4 via a leaf spring 7 having a space where contents pass with the dispense port 4, wherein the upper check valve 5 is mounted on the dispense-opening 1 so that the valve 6 comes into elastically tight contact with the valve hole 2 with flexion of the leaf spring 7. |
