| 摘要 |
PROBLEM TO BE SOLVED: To easily open/close an upper opening of a milk or juice carton and prevent contents from leaking after closing by moving a stopper made of a plastic material to the right and left on an upper opening of the carton. SOLUTION: A plastic stopper 3 is mounted on an opening of an upper part of a milk or juice carton from the center, and it is moved to the right and left. COPYRIGHT: (C)2003,JPO
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