The essence of insert molding lies in the “precise combination of heterogeneous materials”, with the core logic revolving around three key steps: “positioning – cladding – bonding”.
The insert needs to be fixed by the positioning mechanism inside the mold to ensure no displacement or tilt during the injection molding process, providing a precise benchmark for subsequent assembly.
After the molten plastic is injected into the mold, it will fully cover the surface of the insert and fill the surrounding gaps of the insert by utilizing the fluidity of the plastic.
During the cooling and solidification stage, the plastic and the insert form a firm bond through mechanical engagement (such as grooves and threads on the surface of the insert) or intermolecular forces, achieving functional complementarity between the two materials.
