METHOD AND DEVICE FOR PRODUCTION OF TAPE FOR ZIPPER AND INJECTION MOLD FOR PRODUCTION OF ZIPPER

摘要

PURPOSE: To provide manufacturing technology which can selectively produce zip fasteners whose structures have various forms and is excellent in productivity. CONSTITUTION: A slit forming part of a slit molding body 17 is aslant moved against a discharge direction and drawn from a head of a zipper tooth 32. It is desirable that a zip fastener is produced in a mold which a slider provided with a mold for molding a stopper part of the zip is asymmetrically placed on one end of. A hot runner 35 of this mold is made as a material flow is for a start directed to a supply nozzle placed on a position separated from a slider most, and directed to a nozzle adjoined the slider operated for injection molding of various long zip fasteners. This means in which material on a non- operating nozzle is always transposed guarantees that degradation or deterioration process of material which, if not, residues in the hot runner 35 is avoided.