Rotational Molding is often seen as one of the more recently recognized manufacturing processes. Rotational molding was developed in the late 19th century to develop the production of hollow vessels,particularly metal artillery shells.
In the first part of the 20th century, the process was used to mass produce hollow chocolate eggs. By the 1920's, plaster of paris was being molded by a means of biaxial rotation. Plastic materials were developed in the 1950's for use in the rotomolding process. One of the first major applications for the Rotational Molding process at the time was to produce doll heads from a liquid PVC plastisol material. By the 1980's a wide variety of materials had been developed for the Rotational Molding industry.
Rotational Molding has literally reshaped the entire plastics industry. Without this type of manufacturing, we would not have many of the products we have today, nor would we enjoy the quality, durability, and versatility we have come to expect from all plastic products.
The specialized process of rotational molding gives designers, inventors, and product manufacturers more flexibility than just about any other type of manufacturer.
Designers, engineers, and product manufacturers of plastic parts, turn to rotational molding to produce small or large parts of unusual shapes that cannot be produced as one piece by other processes.