The production of moulded latex foam began in 1930 following the discovery of combined whipping and controlled gelling process by the Dunlop Rubber Company1. The process involves the whipping of a latex compound which has been de-ammoniated and matured, followed by the addition of a gelling agent. The delayed action gelling agent, sodium silicofluoride, is able to set the foam in a few minutes at room temperature2. The foamed latex is then transferred to the mould and vulcanised in a steam oven.