Rotational Moulding

What is rotational molding?

Rotational molding is a process used to create parts. It works by filling a hollow mold with a powder resin and then rotating the mold biaxially in an oven until the resin coats the inside of the mold and cures. When the mold cools, the part can be removed. Products created with rotational molding are known for their durability and strength. It is also a cost effective process since the tools used are thin, hollow shells and can be made from aluminum, mild steel, stainless steel, and nickel.

Molds can be made from the following materials

Cast aluminium alloy: the popular choice, with good heat transfer and excellent mould definition. It is best for small to medium sized mouldings.

Sheet mild steel: for fabricating moulds for large mouldings.

Cast beryllium copper: for quality moulds producing very detailed surface finishes.

Electroformed copper nickel: suitable for undercuts and the highest surface reproduction and finish.

• Click here to see the process ProcessSteps.doc:

-- RachelWingfield - 22 Jun 2006