Provided is a hinge cap that is improved in ease of removal from a bottle mouth, and the like. The pouring cap has a body 1, an upper lid 2, and a hinge 3. The body 1 has a downward outer cylinder 5, a downward inner cylinder 6, and a top plate 7 connected to the upper ends of both, and a pouring part 18 is provided on the top plate 7. In the downward outer cylinder 5, a weakening groove 21 for forming a circumferential weakening line 23 and a thickness-relief groove 22 without the weakening line are continuously formed in a series. A circumferential weakened line 23 b is also formed in the downward outer cylinder 5 at a place of the finger-catching recess 13, and the circumferential weakened line 23 spreads at an angle exceeding 180 degrees. Accordingly, the bottle can be easily pulled out from the...

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