| 摘要 |
PROBLEM TO BE SOLVED: To easily remove an inner stopper mounted by means of plugging on the mouth of a container from the container on recovering the container or the inner stopper as resources for recycling. SOLUTION: In this synthetic resin inner stopper 6 wherein a holding projection 4 for being held at an engaging projection 3 at a mouth 2 of a container 1 and a pouring tube 5 are provided, a weakend line 7 having two ends 7a facing each other is formed, encircling the pouring tube 5, at the outside of the pouring tube 5 and weakened lines 8a respectively running outward and downward are connected to the opposite two ends 7a, and at least one of the weakened lines 8 is made to cross over the holding projection 4 in the vertical direction. |
