What is the Rotational Moulding Process?
If you need hollow parts, especially those with complex and varied shapes, rotationally moulded plastic may be your answer. Versatility of the process allows for a wide range of product sizes ranging from a small ball to large 10,000 litre vessels made of polyethylene, and a choice of grades of resins used. Products that before where made of fibreglass or other materials can now be manufactured in plastic by roto-moulding and are more economic, lighter, stress-free and significantly stronger. As with all efficient machines the process is simple in concept. Heat is used to melt and fuse the resins in a closed mould. The charged mould is moved into an oven and heated while being rotated, generally on two axes at low speeds. The resin adheres to the mould’s inner surface until it is completely fused. The mould is then cooled by air or water spray, opened and the finished part removed.
