Patent ID: 8070662

Claim:
A manufacturing device, comprising: a rotary drum having a zipper member introducing groove formed in a circumferential direction of the rotary drum, the groove introducing and guiding a tape with a zipper member in which the zipper member is integrally formed on one surface side of a tape body of the tape; and a seal bar disposed at a position to face the zipper member introducing groove, the seal bar having a welding surface in a curved shape corresponding to a circumferential surface shape of the rotary drum, wherein the tape with the zipper member and the bag film are heat-sealed by the rotary drum and the seal bar while being overlaid with each other, the zipper member introducing groove continuously extends from a tape introducing groove accommodating the tape body, the tape introducing groove and the zipper member introducing groove forms a tape introducing groove for the tape with the zipper member, the tape introducing groove for the tape with the zipper member has a depth in which the whole tape with the zipper member is accommodated such that a seal surface of the tape body is substantially flush with a circumferential surface of the rotary drum; and the rotary drum has a heat-insulating portion.