| 摘要 |
PROBLEM TO BE SOLVED: To cause a top member to be held at a position where it is swung rearwardly by at least 110 deg. from its closing position when it is kept at its releasing position; stopped by itself at a position ranging from its closing position to 25 deg. or less when it is swung in a tightening direction; snap closed at the closing position while being pushed down against a tube opening; and the tube to be completely closed at this position. SOLUTION: This plastic tube has a shoulder 8, a tube opening 2, and a corresponding top member 7, wherein it is comprised of a film hinge 11, and tension bands 19, 20 acting as tension springs. The tension bands 19, 20 are swung when the top member 7 is opened so as not to cause the tube to be hindered in the case that the content in the tube is squeezed out of it, and the tension bands can be held at an angle spaced apart from the closing position. |
