Rotational Moulding

Rotomoulding also known as Rotational Moulding.

Why Rotational Moulding?

Durable and Reliable

Rotational Mouldings 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.

The UK’s Leading Manufacturer

Trifibre Ltd has over 40 years of manufacturing experience and provide a client focussed consultation and advice service from our professional and experienced customer service and sales team, to ensure individual client requirements and project briefs are met.

What Is Rotational Moulding?

Rotational Moulding machines are computer controlled, ensuring consistent quality for every unit produced. The Rotational Moulding process is split into 4 operations.


The process begins by loading a hollow, aluminium mould with a pre-determined amount of powdered polymer, typically polyethylene and virgin or recyclable material. The mould is then closed, locked and loaded into an oven chamber.


Once inside the oven, the mould is rotated biaxially (ie. around 2 axes). The temperature of the oven, typically between 260°C – 370°C depending on the material used, causes the polymer to melt. As the mould rotates, the molten polymer is dispersed evenly and coats the inside walls of the mould.


After the mould has been rotated sufficiently to spread the molten polymer evenly, it is then removed from the oven and cooled, causing the polymer to solidify.


When the mould has cooled sufficiently to retain its shape, the mould is opened and the product removed. The mould can then be reloaded and the process repeated.

Rotational Tooling
Client focussed consultation

Computer Aided Design

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. Trifibre provide a client focused consultation service and are able to work with you to produce designs and prototypes, using state of the art CAD (Computer Aided Design) software, to ensure the individual requirements and needs of our clients are being 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 relatively cost effective manufacturing technique, we provide competitive pricing for quality products.

An ISO 9001 Registered Company

We’re experts in aerospace packaging solutions with nearly 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.

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