What Is Rotational Foam Molding And What Are Its Advantages?
Rotational foam molding is a new rotational molding process that has developed rapidly in recent years. It is based on the usual rotational molding process and combined with foaming molding technology to simultaneously complete rotational molding and rotational molding during the rotational molding process. The process of foam molding is a unique molding process to produce integrated rotational molded foam products. Rotational foam molding can be completed by the "one-step method" of inputting multiple raw materials at one time, or by two or multiple inputs. The outer surface of the obtained rotomolded foam product is dense and smooth, and there is a foam core inside. A dense inner layer can also be added to the foam core layer as needed to form a "sandwich" structure. It is also possible to mold solid foam products that are fully filled with foam layers.
Rotational foam molding is more complicated than the usual rotational molding process. If the thickness of the foam layer is controlled and the input of foam material is too small, the thickness of the foam layer will be insufficient, which will affect the function of the product, such as insufficient thermal insulation effect or insufficient density. , and also affects the strength of the product. However, if there is too much foam, it will swell and break the product or even the mold, causing greater damage.
Rotational molded foam products have many unique advantages: because they have multiple product layers, they have high mechanical properties, can be insulated, and can reduce the cost of the product. Rotational foam molding is currently mainly used to produce rotational molded products that require thermal insulation, high strength requirements, or to reduce product production costs, such as insulated boxes, boats, pontoons, etc.Rotational foam molding has high requirements for the selection and preparation of raw materials, fine control of rotomolding equipment, and strict requirements for molding process conditions.