Patent ID: 8561860

Claim:
A pour spout member for a packaging bag, comprising: a base adapted to be attached to a packaging bag; a tubular neck formed integrally with the base and having a tip opening sealed by a sealing member, the sealing member including a rectangular joint portion and a sealing portion, and being adapted to be rotated in order to be cut-off from the tip opening of the tubular neck, thereby opening the tip opening of the tubular neck; and a lid member having an upper end integrally joined to the rectangular joint portion of the sealing member by an intermediary of a connecting web formed of a hinge member; and an expandable lid segment attached to the lid member which are rotated integrally with the sealing member, the expandable lid segment having an upper end that is joined to the rectangular joint portion of the sealing member in order to be foldable along the connecting web onto a lateral side of the sealing member, and to be openable in a horizontal direction; and further comprising: a releasable rotation locking mechanism for providing temporary restriction of the lid member provided between the expandable lid segment.