Roto Moulding Machine/Rotary Moulding Machine For Water Tank, oil tank and Customized Plastics

Roto Moulding Machine/Rotary Moulding Machine For Water Tank, Oil Tank And Customized Plastics

     Rotational molding machines support the production of strong, hollow plastic parts in a variety of shapes, sizes, colors, and textures. Compared to injection molding, the tooling that is used costs less and supports faster modifications. Examples of rotational molds include two-piece sheet metal molds and multi-piece aluminum molds with articulating features.

     The first step of the rotational molding process involves loading powdered resin into the mold. Using bolts or clamps, the mold is then closed. Next, the mold is moved to an oven where it rotates slowly about two axes simultaneously. This biaxial rotation allows the mold to be coated evenly with plastic, yielding a uniform wall thickness. 

      The speed of the biaxial rotation can be adjusted to suit the shape and complexity of the plastic part. The powder resin is not centrifugally thrown against the walls of the mold. Rather, the mold runs through the pile of powder material. As heat is transferred through the mold, the resin powder melts and adheres to the mold’s surface, building up layers of plastic.