Patent ID: 7257868

Claim:
A slider for a concealed type slide fastener, the slider, comprising: the slider engaging and disengaging respective fastener element rows of the concealed type slide fastener, the concealed type slide fastener having respective folded-back side edge portions in a double structure created by folding back opposing side edge portions of a pair of right and left fastener tapes to a rear face side into a U shape, coupling heads of fastener elements disposed along folded-back edges of the fastener tapes, leg portion sides of the fastener elements disposed alone front end portions of folded-back pieces, and leg portions fixed to the folded-back pieces of a rear side of respective folded-back side edge portions, wherein the slider a comprises: an upper blade and lower blade connected through a connecting post; lower flanges provided at right angle to respective right and left side edges of the lower blade and approaching toward the upper blade; and between the upper blade and the lower blade, guide passages for simultaneously guiding the respective folded-back side edge portions in the double structure of the fastener tapes and the respective fastener element rows in an engageable/disengageable posture.