What is rotational moulding?
Rotational moulding can be simply defined as a high- temperature, low pressure manufacturing process that uses heat and biaxial rotation to produce hollow, one- piece plastic parts.

Why should I use rotational moulding?
Relative to blow moulding, rotational moulding permits much more complex, asymmetrical shapes. Wall thickness distribution is more uniform with rotomoulding and part size can go well beyond anything which is possible with blow moulding. Relative to injection moulding, rotational moulding has major advantages of very low mould cost and the ability to produce complex hollow articles.

What are the size restrictions?
The size of the parts possible using the process is restricted mainly by the oven used. Rototek have a range of machines capable of producing parts up to 6.5m in length and 2.7m wide.

How many parts can be produced?
From one tool you can manufacture up to around 5,000 units per year on a conventional rotational moulding machine.. For higher quantities multiple tools can be produced. Rototek now have 2 Leonardo machines which fully automate the process. The direct heating also speeds up the manufacture of parts allowing up to 20,000 components each year from one tool alone.

What materials are used?
The majority of parts produced using this process are manufactured from polyethylene. This is available in many different grades and can include additives such as UV stabilisers and antimicrobials for specific applications.

Other materials available include polypropylene, polycarbonate, PVC and nylon.

Rototek Limited Office and Factory
Sylvan Way, Off Great North Road, Newark. NG24 3UT.
Email: enquiries@rototek.com Tel: 01636 611959 Fax: 01636 707369
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