Dual color injection molding technology is an advanced plastic molding technology that can present two different colors or materials of plastic on the same product, bringing more flexibility and creative space to product design and manufacturing.
The principle of two-color injection molding process is achieved by using an injection molding machine with two or more injection units. Firstly, inject the first type of plastic material into a specific cavity of the mold to form the first layer of the product. This layer can be the main part of the product, or a part that serves as a basic support and other functions. For example, when manufacturing a two-color toothbrush, the first type of plastic may form the handle body of the toothbrush, and its material can be selected according to the product's requirements for hardness, elasticity, etc., to provide a good grip.