Abstract: A concealed type slide fastener comprising a box, a box pin and an insert pin, wherein the box includes an insert pin insertion/removal space into/from which the box insertion/removal portion of the insert pin is inserted and removed, an engaged/disengaged portion with/from which an engaging/disengaging portion of the insert pin is engaged and disengaged, the insert pin insertion/removal space of the box and the engaged/disengaged portion are separated from each other through a partition wall, an end portion of the partition wall on the box pin side has a notch portion for guiding the side wall portion of the insert pin throughout an entire length, and tape folding end sides of the box insertion/removal portion and the engaging/disengaging portion of the insert pin are connected throughout at least the entire length of the engaging/disengaging portion by a side wall portion.

Abstract: The present invention provides a concealed type slide fastener comprising a box, a box pin and an insert pin, wherein the box includes an insert pin insertion/removal space into/from which the box insertion/removal portion of the insert pin is inserted and removed, an engaged/disengaged portion with/from which an engaging/disengaging portion of the insert pin is engaged and disengaged, the insert pin insertion/removal space of the box and the engaged/disengaged portion are separated from each other through a partition wall, an end portion of the partition wall on the box pin side has a notch portion for guiding the side wall portion of the insert pin throughout an entire length, and tape folding end sides of the box insertion/removal portion and the engaging/disengaging portion of the insert pin are connected throughout at least the entire length of the engaging/disengaging portion by a side wall portion.