Patent ID: 6936202

Claim:
A method for manufacturing a multicolor slide fastener, comprising the steps of: loading a pair of supporting tapes 11 on a molding die 100 , the molding die 100 having a plurality of mutually isolated unit fastening teeth-forming slots 101 , and each of the molding materials S being injected into each of groups of the unit fastening teeth-forming slots 101 (supporting tape loading step); thermally melting and carrying the molding materials S of different colors from a raw material source part through inclined passages 201 and 202 of both sides, each of the inclined passages 201 and 202 being connected to each of injection passages of the molding die 100 (heating and melting step); opening/closing an opening/closing means 400 , the opening/closing means being disposed between discharge ends of the inclined passages 201 and 202 and nozzles 203 (passage opening/closing step); injecting each of the molding materials of two or more colors through each of the nozzles 203 and injecting passages into each of groups of unit fastening teeth-forming slots 101 after melt-passing the molding materials through the passage-opening/closing means 400 (injecting step); and cooling unit fastening teeth 12 formed on the supporting tapes 11 and taking out completed product (cooling and taking-out step).