A slide fastener comprising a pair of stringer tapes which are separable into identical halves by means of a pin-and-box separator, a reinforcing strip attached to an end of each of the stringer tapes and an adhesive film fusible to bond the strip to the tape. Both of the stringer tape and the reinforcing strip are made of the same type of fibrous materials, while the adhesive film is a modified polyester or a copolymeric polyamide depending upon the type of materials chosen for the stringer tape and the strip.