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Rotational Moulding

Your OEM partner in Rotomoulding

Rotational moulding, also known as rotomoulding, can be used to manufacture a diverse range of products. It involves the use of sophisticated plastics moulding technology and is most often used to make hollow goods, such as hard plastic cases for storing electronic equipment, bins and containers and children’s toys.

Rotational moulding is a popular method of manufacturing due to its affordability and is used by a wide range of industries, as it delivers a precise finish on every product.

At Trifibre, we have invested in the best technology and use the highest quality materials to develop hard wearing and durable products via our custom rotational moulding service.

Read on to find out more about our rotational moulding products


The Rotational Moulding Process


Raw material is placed into the mould. The most common material being polyethylene (LDPE, HDPE, LLDPE, MDPE) which is available in a vast array of colours. Additives can be added for different requirements such as UV protection and colour consistency.


The mould is then heated in an oven and rotated causing the polymer to coat the mould walls. Rotation occurs on two or more axes rotating at different speeds and frequencies. This allows for an even wall thickness and clean finish.


After heating, the mould is cooled whilst rotating to ensure an even wall thickness. During this time the product will incur a small amount of shrinkage which is catered for in the design of the mould. The shrinkage aids the removal of the product from the tool.


The final steps in the rotomoulding process are removal of the product from the tool and finishing. During the finishing process the parts are trimmed and allowed to cool further sometimes using jigs to prevent further shrinkage and to achieve an accurate final product.

What are the benefits of rotational moulding?

There are numerous benefits to using plastic rotational moulding for your products. It is an affordable manufacturing process that delivers a uniform finish and an end product that is strong and resilient, while providing complete design freedom and the ability to create highly complex shapes…

Durable and Reliable

Products made using rotational moulding are inherently reliable, internal stresses are minimal and joints are eliminated. The materials are tough and resilient even under extreme conditions when compared to fabricating, fibre glass, injection, vacuum or blow moulding.

Unlimited Design Possibilities

Offering the opportunity to manufacture stress-free parts with uniform wall thickness and complex shapes. The process is extremely versatile. Parts can be manufactured with inserts moulded in and surface textures and effects reproduced with relative ease.

Low Cost

The tooling used in rotational moulding is produced from either steel or aluminium and is relatively low in cost when compared to tooling used for other processes, such as blow or injection moulding. Plus, all of our rotational moulding products are UK-made and manufactured.

The UK’s Leading Manufacturer

Trifibre Ltd has over 40 years of manufacturing experience and provide a client-focused consultation for our OEM Rotomoulding service from our professional and experienced customer service team, to ensure individual client requirements and project briefs are met. Trifibre is currently an OEM supplier of rotomoulded products to a wide variety of industries including leisure, medical, utilities, construction.

For more information or answers to commonly asked questions, read our Guide to Rotomoulding.

OEM Rotomoulding

At Trifibre, we believe in taking a client-focussed approach and provide a full OEM rotational moulding service. Using Computer Aided Design (CAD) software, we work with you to produce designs and prototypes to ensure your requirements are fully met.

Once these designs have been finalised, we ensure that the manufacturing of your project is completed efficiently and successfully. As the tooling used in rotational moulding makes it a cost-effective manufacturing technique, we provide competitive pricing for quality products.

Established in 1981, the Trifibre Ltd group have over 40 years of manufacturing experience and have gained an outstanding reputation for delivering bespoke and innovative, design led products.

Check out our Guide to Rotomoulding for further information. Contact us if you would like Trifibre to become your OEM supplier or for support with your new custom rotational moulding project!

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An ISO 9001 Registered Company

We’re experts in rotational moulding with over 40 years of experience. Our in-house design and technical team take your project from concept to completion, all being managed with in our 70,000 sq ft UK based facility.

If you’d like to hear more, simply fill out a contact form, or call us on 0116 232 3166, or drop an email to [email protected]

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