| 摘要 |
PURPOSE:To make the unsealing necessarily break a broken-line ring in order to prevent unrightful unsealing and leakage of the liquid content as well by hooking a hooking ring, which is provided in continuation from the lower end of a circular wall of a cap with the broken-line ring interposed therebetween, with a fastening hook on a spout to be passed through a hook hole in the hooking ring. CONSTITUTION:A mouth cap 100 is composed of a spout 110 attached to the wall board 11 of a paper container for liquid and a cap 120. In this instance a cylindrical circular wall 111 is erected on a ring-shaped base 117 of the spout 110 which has in the side a hollow 118 for being fastened to the wall board 11. On the outer surface of the circular wall 111 an external screw 114 is formed in the upper part and a plurality of fastening hooks 115 are formed in the lower part. On the other hand, on the inner side of the roof 121 of the cap 120 inner and outer ring-shaped projections 123, 124 which press respectively on the inner and outer sides of the forward end of the circular wall of the spout 110 are provided. An internal screw 125 is formed in the upper part on the inner surface of the circular wall 111. A hooking ring 127 with hook holes 128 opened through for the fastening hooks 115 is provided in the lower part of the circular wall 111 in continuation with a broken-line ring 126 interposed therebetween. |
