Introduction to In-Mold Injection Molding: The basic principle is to print the thin film, then forming and cutting it into a single mold , and finally embed it into the injection mold for injection molding, as shown in the figure on the left.

Due to the capability of In-Mold Decoration to achieve various appearance requirements through printing, the number of mold disassemblies can be reduced. For example, windows can be molded together with the outer shell, and only printing on the lattice is needed to achieve the purpose of windows, without requiring two sets of molds for windows and upper shells. Since the mold does not need to be disassembled, it is particularly suitable for the use of waterproof and dustproof outer shells, which can be combined with touch modules and used in humid environments such as bathroom and water dispenser equipment.

The success of the IMD process is influenced by the stretchability of the film, print adhesion, and flowability of the injection material. Therefore, before formal mold opening, it is necessary to determine which materials to use to achieve our set goals. Materials such as PC, PET film, heat-resistant ink, high flowability injection materials like PC, ABS, PMMA, and PC+ABS are all options we would choose.