Oats processing follows the following procedure.
The oats from the silos are processed through vibrating screens to extract any foreign material.
The oats are then sized by width and length into various grades prior to hulling.
Separation of the outer hull from the inner oat groat is effected by means of centrifugal acceleration. Oats are fed by gravity onto the center of a horizontally spinning disc, which accelerates them towards an outer ring. Groat and hull are separated on impact with this ring. The lighter oat hulls are then aspirated away while the denser oat groats are taken to the next step of processing.
The oat groats then pass through a dry heat treatment.
Following kilning the oats are cut into smaller fractions to enable rolling to produce a range of oat flake thicknesses. Wholegrain oat flakes do not go through this cutting step.
Prior to rolling the cut groat is steam cooked at temperatures around 100 degrees C to increase the moisture content and increase the elasticity of the cut groat which enables flakes to be produced.