The principle of rotational molding

    The basic processing process of rotational molding is very simple, which is to place powdered or liquid polymer in a mold and heat it while the mold rotates and revolves around a vertical axis, and then cool it to form. At the beginning of the heating stage, if powdered materials are used, a porous layer is first formed on the surface of the mold, then gradually melted during the cycling process, and finally a homogeneous layer of uniform thickness is formed;

    If liquid material is used, flow and coat the surface of the mold first, and stop flowing completely when the gel point is reached. The mold is then transferred to the cooling work area, cooled by forced ventilation or water spray, and placed in the work area. Here, the mold is opened, the completed parts are taken away, and the next cycle is carried out.