| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily distinguish presence of plug opening in a pouring opening used for a paper container. <P>SOLUTION: A flap 3c which is at a position hidden by a carton when the pouring opening 1A is fitted to the carton, but is pulled out of the carton by a cap when the cap 3A is removed, is formed in the lower end region of the cap 3A fitted by screw fitting to a pouring opening main body 2. When the cap is opened, the hidden flap is pulled out, and when the cap is closed again, the flap remains at an outside visible position of the carton to be able to easily distinguish whether the cap is opened or not by the presence of the flap outside of the carton. <P>COPYRIGHT: (C)2004,JPO |
