Rotational moulding, known also as rotomoulding or rotocasting, is a process for manufacturing hollow plastic products. For certain types of liquid vinyls, the term slush molding is also used. Rotational moulding has particular advantages in terms of relatively low levels of residual stresses and inexpensive molds. Rotational moulding also has few competitors for the production of large (> 2 m3) hollow objects in one piece. Rotational moulding is best known for the manufacture of tanks but it can also be used to make complex medical products, toys, leisure craft, and highly aesthetic point-of-sale products.  Click here to read Professor Roy Crawford’s quick guide to rotational moulding.

Design & Construction

Rotational Moulding makes a huge range of products possible.  With good design and quality construction, parts are fit for purpose, aesthetically pleasing and made to last!


The most popular material used in rotomoulding, polyethylene is a highly recyclable plastic that is commonly ground up and used in new products at the end of its life.  If you are interested in rotomoulding in the environment, click here to find out more.

Equipment & Materials

Rotational moulding (or rotomolding) uses different kinds of machines and materials to produce a part.  Find out more about the types of machinery and materials to help you source the perfect combination for your project.

More Information

Need to know more?  If you would like to discuss any aspect of the process, how to find a quality rotomoulder in your area around the world or what you need to consider when working with moulders, click here for more!

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