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Sealing Perfection at the Tooth-Tape Junction | #injection molding zipper machine

Sealing Perfection at the Tooth-Tape Junction

Sealing Perfection at the Tooth-Tape Junction

In the high-stakes production of injection-molded zippers, the presence of flash—a thin, undesired fin of plastic escaping from the mold cavity—is not merely a cosmetic flaw. At the critical tooth-tape interface, even micron-level flash can render a zipper non-functional. It can interf