APPARECCHIO E METODO DI FABBRICAZIONE DI TRENI DI ELEMENTI PER CHIUSURE LAMPO

摘要

In the manufacture of trains of fastening elements for slide fasteners, flowable synthetic polymer resin is injected into gate or runner channels formed in a cavity wheel and extending beneath one edge of a band enclosing cavities of the cavity wheel such that the flowable synthetic polymer resin flows through the channels into the cavities to form fastening elements.