ROTATIONAL MOULDING
Please Note: This page is for information purposes only. Rutland Plastics is an Injection Moulder and does not offer rotational moulding services.
Please Note: This page is for information purposes only. Rutland Plastics is an Injection Moulder and does not offer rotational moulding services.
This method is also referred to as Rotamoulding or Rotomoulding. It is used to produce hollow plastic products. Post moulding operations enable the production of more complex products. It differs from other moulding methods in that the melting and moulding stages occur after the polymer is placed in the mould and no external pressure is applied.
There are four main stages:
A predetermined amount of polymer powder is placed in the mould. Once the mould is dosed it is then placed into an oven.
In the oven the mould rotates around two axes tumbling the powder. The rotation speed is relatively low around 20 revolutions per minute. As the mould becomes hotter the powder melts and sticks to the inner wall of the mould building up an even coating over the entire surface.
After sufficient time to evenly distribute the molten polymer the mould is cooled using either air or water, or a combination of the two. The polymer solidifies to the required shape.
When the polymer has cooled sufficiently to retain its shape the mould is opened and the part removed.
Low and Linear Low Density Polyethylene, Polypropylene, EVA and PVC.
Cold Overton Road
Oakham
Rutland
LE15 6NU
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01572 723 476
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