Rotational Moulding

The rotational moulding process is a high-temperature, low-pressure plastic-forming process that uses heat and biaxial rotation (i.e., angular rotation on two axes) to produce hollow, one-piece parts. Manufacturing large, hollow parts such as oil tanks is much easier by rotational molding than any other method. Rotational moulds are significantly cheaper than other types of mold. Very little material is wasted using this process, and excess material can often be re-used, making it a very economically and environmentally viable manufacturing process.Rotational molding offers design advantages over other molding processes. With proper design, parts assembled from several pieces can be molded as one part, eliminating high fabrication costs. The process also has inherent design strengths, such as consistent wall thickness and strong outside corners that are virtually stress free. For additional strength, reinforcing ribs can be designed into the part. Along with being designed into the part, they can be added to the mold.

The ability to add prefinished pieces to the mold alone is a large advantage. Metal threads, internal pipes and structures, and even different colored plastics can all be added to the mold prior to the addition of plastic pellets. However, care must be taken to ensure that minimal shrinkage while cooling will not damage the part. This shrinking allows for mild undercuts and negates the need for ejection mechanisms

Government Projects

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Urban Custom Rotational Moulding

Full custom rotational moulding service from concept to final production
Experienced in-house team work with closely with you through every step of the process to take your idea and turn it into reality.
In-house mild steel/stainless steel mould manufacture. Aluminium mould design and external manufacture.
Prototyping
Low volume and high volume manufacture
Specialized chemical grade polyethylene for oils and chemical substances
Internal buoyancy foaming for marine products.
Single shot, double shot and triple shot availability.
Multiple mould in inserts
Mould-in or mould-on graphics

Polyethylene comes in many colours to suit your Custom Moulded products.

Polyethylene Custom Colours