TWI834056B

The present invention provides a positioning mechanism for a zipper chain that does not deform a perforated portion or a core portion. The present invention relates to a positioning mechanism for a zipper chain, with which a zipper chain moving toward the downstream side or the upstream side can be positioned at a predetermined forming position between an upper mold and a lower mold. The positioning mechanism for a zipper chain includes: a limiting member for blocking the upstream end chain teeth or the downstream end chain teeth adjacent to the spacer in the zipper chain (10) on the upstream side or the downstream side so as to limit the movement of the zipper chain toward the downstream side or the upstream side, thereby positioning the zipper chain at a forming position; and a chain pushing and pressing mechanism for contacting the zipper chain on the upstream side or the downstream side of the limiting member, and abutting the upstream end chain teeth or the downstream end chain teeth against the limiting