What About The Rotational Molding Process

The rotational molding process is a commonly used method of manufacturing for many items we all use on a daily basis. Some good examples would include bulk tanks, canoes, kayaks, helmets, footballs, playground equipment, bins and refuse containers.
Another name for the rotational molding process is rotomolding, or rotomoulding. It is one of those processes that people take for granted and scarcely ever even notice. Yet it includes many products we all use and enjoy.
In the past, rotomolding was very slow and had a very limited application. With the ever advancing technologies of modern industry it has become more efficient and has a broader area of application.

What plastics can use the rotational molding process?

The main plastic used is the polyethylene family of plastics; PE, HDPE, LLDPE and HDPE. A few other plastics used in rotomolding include nylon, PVC, and polypropylene.
Why is it called the rotational molding process?
It is called the rotational molding process because the mold rotates! It actually rotates in two axes. This is to enable the plastic to be evenly distributed over the molding surface of the mold. In the rotational molding process, a predetermined amount of plastic powder is placed in the mold and heated to it’s melting point. The mold is then rotated in two axes, which spreads the molten plastic over the face of the mold.
Find out more about the rotational molding process at our website: Global Plastic Injection Molding

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