| 摘要 |
PURPOSE: To easily and rapidly unseal a container filled with the liquid by mounting a grip piece radially extended from a center of opening-closing closure on a drum. CONSTITUTION: A drum 1 comprising the threads is fixed on a wall 3 of a liquid container of which an opening is formed by screwing an opening-closing closure comprising the cutting teeth. To grip a flexible container, a triangular tongue grip 4 having a rounded corner is used. That is, a user holds the grip piece 4 with one hand to stabilize the container, and turns the opening-closing closure by the other hand to screw the same, whereby the opening from which the liquid such as beverage or the like sealed and filled in advance can be formed on a wall 3 of the container by the action of the cutting teeth. On this occasion, a wall at a side opposite to the opening of the container is pushed away to a tip part of the grip piece when the grip piece is folded in the direction of the wall of the container, and as a result, a gap is ensured between the opening and the wall at the opposite side, and the wall at the opposite side can be prevented from being pierced by mistake. By mounting a projection 5 on the tip of the grip piece 4, the grip piece 4 can be easily gripped. |
