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Insert injection molding represents a cutting-edge manufacturing paradigm that combines molten thermoplastics with pre-positioned metallic or non-metallic inserts within specialized insert injection molds. This technology fundamentally differentiates itself from conventional injection molding through its requirement for automated or manual insert loading into molds prior to resin injection. By enabling the fusion of dissimilar materials—ranging from engineering plastics to titanium alloys—insert injection molding produces multifunctional composite components with enhanced mechanical strength, thermal stability, and design complexity.

Plastic injection molding is an important technology widely used in the field of plastic processing, and its processes are various and have their own characteristics. In the big family of injection molding technology, insert injection molding is a very special one.