Injection Molding: Injection Molding (注塑)
A process in which molten plastic is injected into a closed mould to form resin teeth, end stops or slider parts. Mould temperature, injection pressure, holding time and cooling rate control tooth dimensions, surface finish and shrinkage. Poor control causes short shots, flash, sink marks and weak tooth-to-tape bonds. Injection moulding allows precise colour matching and high output, and parameters are recorded for each production lot.