Patent ID: 7500291

Claim:
A waterproof slide fastener in which a plurality of fastener elements are arranged along flat element mounting edge portions opposing each other of a pair of waterproof fastener tapes having a waterproof layer for covering a surface of a belt-like core material, and an insert pin and a box pin are fixed integrally to both front and rear faces in a flat shape at end portions having no fastener elements of the pair of fastener tapes on one side in a longitudinal direction, the waterproof slide fastener comprising: a slider inserted through the fastener elements; an insert pin fixing member extending from part of a side face on a tape end side of the insert pin over both the front and rear faces of one of the fastener tapes and being fixed integrally thereto; and upper and lower plate members extending outwardly with a predetermined gap in parallel to the front and rear faces of the fastener tape, the plate members being provided on both the front and rear faces on an end portion of the insert pin on a fastener element side, wherein an end portion of the insert pin fixing member fixed integrally to both the front and rear faces of the fastener tape covers a front end face of the fastener tape on an insert pin fixing side so as to stride across the front and rear faces of the fastener tape, the gap between the upper and lower plate members is formed to be larger than a thickness of the fastener tape to which the box pin has been fixed, and when the fastener elements are engaged, the gap between the upper and lower plate members accommodates part of an edge of the fastener tape on a box pin side.