Patent ID: 8434651

Claim:
A pouring member, comprising: a pouring member main body; and a cylindrical unsealing cap having a closed end at an end thereof and coaxially attached to said pouring member main body, wherein said pouring member main body has a base part, a pouring cylindrical part extending cylindrically from the base part, a sealing part formed at a tip of said pouring cylindrical part, and a thin wall part formed between the sealing part and the pouring cylindrical part, and said sealing part is twisted off with said thin wall part by rotating said unsealing cap which is engaged with said sealing part around a central axis of said unsealing cap, said unsealing cap includes at least two rotation prevention sections extending vertically and downwardly from an end surface of an open end side of said unsealing on and being arranged such that the at least two rotation prevention sections are apart from one another by an angle which is larger than a rotation angle required for twisting off said sealing part and symmetrically with respect to the central axis, and, at substantially a center of a width direction of each rotation prevention section, a recess is formed such that the recess opens to a front end side of the rotation prevention section, and said pouring member main body further includes an engagement projection engaging with said recess in a direction substantially parallel with a direction in which said rotation prevention sections extend vertically and downwardly, said engagement projection being formed at a specific position of a flange part at a boundary between said base part and said pouring cylindrical part of said pouring member main body.