The rotational moulding process starts with a good quality mould
that is placed in a moulding machine that has a loading, heating,
and cooling area. Several moulds may be placed on the machine at
the same time. Pre-measured plastic resin is loaded into each
mould, and then the moulds are moved into the oven where they are
slowly rotated on both the vertical and horizontal axis.
The melting resin sticks to the hot mould and coats every surface
evenly. The mould continues to rotate during the cooling cycle so
the parts retain an even wall thickness. Once the parts are cooled,
they are released from the mould. The rotational speed, heating and
cooling times are all controlled throughout the process.
