Patent ID: 6460475
Filing Date: 2002-10-08
Classification: A44B,D05B,D05D

Abstract:
A device for manufacturing string core-free invisible zipper, comprising: a needle seat and a press tray disposed on a zipper making machine, wherein no zipper rack stretching/separating device is disposed in front of a zipper rack entrance of the needle seat and zipper racks on two sides are fed into the needle seat in a naturally loose state, wherein a surface of the needle seat has a pair of parallel guiding channels having first needle holes, a press tray disposed on the needle seat above the guiding channels and spaced therefrom by a predetermined distance for feeding fabric belt into the space therebetween, the press tray having second needle holes aligned with the first needle holes; and a cover board positioned between the press tray and the needle seat, a gap being defined between the cover board and the press tray for inputting fabric belt therein, passages between the guiding channels of the needle seat and the cover board for passing the zipper racks, a rear side of the cover board having a split aligned with the first and second needle holes.