| 摘要 |
PROBLEM TO BE SOLVED: To provide a mouth stopper for a cardboard package for liquid, which is easily separated from a package main body in order to make the collection of classified refuse easier when the package is made to waste. SOLUTION: A mouth stopper comprises a spout protrusively provided at the top of a cardboard package for liquid and a cap screwed to the spout and detachably mounted thereto. In this mouth stopper, the spout 100 has a pouring cylinder 120 which has a threaded portion 121 on its outer peripheral face and is provided upright in a position upwardly of an inner periphery of a pedestal ring 110. A blocking plate 140 having an annular thin-wall fragile line 141, which is tearable by a pull ring 143, is provided at the lower part of the inside of the pouring cylinder 120, and a horizontal sticking ring 130 is provided below the outer peripheral edge of the pedestal ring. An annular thin-wall fragile line 131 is provided to the sticking ring 130 along the outer periphery of the pedestal ring 110, and a pull ring 133 is provided in a suspended state so as to be connected to the underface between the annular thin-wall fragile line 131 and the pedestal ring 110 with the aid of a hinge 132. |
