PROCEDE ET DISPOSITIF POUR LA FABRICATION DE RANGEES DE MAILLONS EN MATIERE SYNTHETIQUE CONSTITUANT DES FERMETURES A CURSEUR

摘要

An elongated, plastic slide fastener stringer of the modified, continuous helix type in which each fastener element extends substantially in a plane transverse to the direction of stringer elongation, and the elements are longitudinally connected by integral portions of the helix. Each element consists of a substantially U-shaped front reverse turn formed with a coupling surface and a substantially U-shaped rear reverse turn, the reverse turns each having a first terminal part and a second terminal part, the first terminal parts being integrally joined to each other, and the second terminal parts being integrally joined to respective connecting portions. A protuberance on the second terminal part of the rear reverse turn is aligned in the direction toward the coupling surface and beyond the connecting portion joined to the second terminal part of the reverse turn for abutting engagement, and provides anchorage for sewing thread fastening the stringer to a support.