The Universal Selection Source:
Plastics & Elastomers


SpecialChem / May 8, 2009

Rotational Moulding is not just a process from the past; it has much to offer current designers looking for flexibility. The range of materials, design options and post-moulding operations available mean that rotomoulding can supply a solution to any short run situation where other processes such as injection moulding would be uneconomic. The addition of inserts and in-mould graphics adds another dimension to the attractiveness of this process. The basic process is outlined, together with comments relating to toolmaking, materials, inserts, design and decoration. To make a part, pre-determined amounts of ground polymer are introduced into a hollow mould which is rotated and heated until the plastic solidifies. After cooling, the part is removed from the tool and the process can begin again. Common materials include polyethylene and polypropylene but nylons can also be found as well as amorphous materials. Tooling is often aluminium. Post-moulding operations are common. Parts are stress free.

1 Comments on "Rotomoulding"
muhammad y Nov 11, 2017
Kindly describe the temperature and heating factors involved in Roto-moulding process. What are the methods to avoid end product from flame and high heat produced during Roto-moulding process?

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