Patent ID: 7114224

Claim:
A slide fastener having a stopper portion composed of thermoplastic resin for restricting a sliding of a slider at an end portion of a fastener element row attached along a side edge of a fastener tape, wherein the stopper portion is an upper stopper portion mounted on a top end portion of each of right and left fastener stringers, and the stopper portion has an upper leg portion, a lower leg portion, and a bent portion which is a proximal portion of the upper and lower leg portions, wherein the stopper portion is fixed to front and rear faces of the fastener tape by fusing with heat so as to sandwich the fastener tape of the fastener tape, wherein a contact face between an inside face of the stopper portion and a surface of the fastener tape has a weld portion which is produced by heat welding and a non-weld portion which does not undergo heat welding, and wherein the weld portion has a first weld portion at the end portion on the side of the tape main body of the stopper portion and a second weld portion existing at a place except the end portion.