Rotational moulding (or Roto moulding as those in the industry know
it), is a relatively simple process used to manufacture plastic
parts that are traditionally too large to manufacture by other
conventional means.
Although the process is relatively simple, there is a lot of
science behind what makes this process a viable means to convert
plastic into items for everyday use.
Essentially this conversion process takes ground/powdered polymer
that is put into a “mould” or a “tool” and is slowly heated to the
melting point of the polymer. During this process, the polymer is
not only heated up, but it is also being “rotated” or turned around
within the mould/tool so that as the polymer is reaching it melting
point, it will “lay up” and adhere to the wall of the mould/tool
creating the shape.