| 摘要 |
PROBLEM TO BE SOLVED: To provide an ejection port plug having a built-in unsealing blade wherein there is no fear of being hurt by the unsealing blade of the ejection port plug protruding inside a container when a used paper container for liquid is disassembled for classified collection. SOLUTION: The ejection port plug comprises a spout 100 having a built-in unsealing blade protruding on an ejection hole of a paper container for liquid sealed by a sealing film and a cap 200 wherein the cap 200 is equipped with a threaded part 221 on an inner peripheral face of a peripheral wall 220, and a guiding inner cylinder 230 forming plurality of spiral guide slopes 231 on an outer peripheral face is made to hang on a lower face of a top plate 10. The spout 100 is equipped with a threaded part 111 with the cap on an outer peripheral face of an ejection cylinder 110, a plurality of longitudinal grooves 112 having a locking part 113 on a lower are formed on an internal face, a plurality of guide slopes 132 which have a plurality of sliding protrusions 131 sliding in the longitudinal grooves on an outer peripheral face upward and which are in slide contact with the guide slope 231 of the cap on an inner peripheral face are formed, and an unsealing cylinder 130 with a small triangular unsealing blade 141 with a width (w) of a base at an interval of 3 deg. to 12 deg. with a center angle of αdeg.connected is fitted into a lower end. |
