| 摘要 |
PROBLEM TO BE SOLVED: To keep a lid body stably in an opened state relative to a fitting cylinder so as to allow an operator to easily obtain a feeling of opening/closing the lid body.SOLUTION: A cap 1 includes a fitting cylinder 4 to be fit to a mouth part of a container containing contents and a lid body 6 covering the opening of the mouth part and connected to the fitting cylinder 4 through a hinge 5. The hinge 5 has a main hinge part 17 positioned in the central part in the circumferential direction around a cap shaft O in the hinge 5 and a pair of sub-hinge parts 18 positioned on both sides, in the circumferential direction, of the main hinge part 17. The sub-hinge parts 18 are formed so that their inner side parts 20 positioned on the side of the main hinge part 17 are thinner than their outer side parts 21 positioned opposite to the main hinge part 17, and the main hinge part 17 is thicker than the outer side parts 21 of the sub-hinge parts 18. |
