A piece of uncured rubber of specific weight and/or size is placed between two halves of a pre-heated mould.
The mould is then closed in a press under an overall pressure of around one ton per square inch. The rubber is heated by conduction from the mould surface, and vulcanises to the shape of the cavity.
As compression moulding is a relatively simple process it is frequently used for low volume parts and the development of parts through prototyping to production. For less complex parts this method is also effective for high volume runs.
From simple gaskets to more complex parts, we will work with you to ensure the most cost effective and reliable moulding technique is used. This includes designing the mould to ensure that air traps and defects do not affect the quality of your parts.
Compression moulded parts will typically have some 'flash', which is excess rubber from the moulding process. This can be removed by one of the methods outlined in the Finishing Section.
Click HERE to download a Compression Moulding Information Sheet.