APPAREIL POUR FORMER DES CROCHETS SUR DES FERMETURES A GLISSIERE, A BOUCLES ET CROCHETS

摘要

A loop guide has a plurality of transversely spaced loop guide comb teeth for guiding loops of thermoplastic resin therealong into contact with cutter blades of an ultrasonically vibratable cutter to cut off only one of two legs of each loop. The other legs that remain unsevered serve as hooks on a hook-and-loop fastener.