Components deflashing is a process that removes excess flash, a by-product of rubber and silicone injection moulding.

Traditional deflashing methods usually involve manually removing excess flash with knives, pliers and other simple hand tools. The precision and efficiency of this process depend largely on the operator’s experience and the quality of the tools used. Even the most careful manual deflashing is not fully immune to inconsistencies, especially in large-scale manufacturing.

At Guma sp. z o.o. sp.k. we have chosen more modern and efficient processing methods. The vast majority of our components, whenever their geometry allows it, are cryogenically deflashed.

This process utilises extremely low temperatures achieved with liquid nitrogen. Rubber and silicone components are placed inside a specialised chamber, where they are cooled down to temperatures reaching approximately -110°C. Under these conditions, the excess flash freezes significantly faster and becomes more brittle than the main body of the component, making it easier to remove.

The cooled components are then transferred into a rotating drum, where they are treated with specialised deflashing media. This process effectively removes excess flash while preserving the component’s geometry and improving its aesthetic properties.

Cryogenic deflashing technology allows us to achieve:

greater process repeatability,
improved surface aesthetics,
the ability to process more complex geometries,
reduced risk of damaging the component surface,
increased manufacturing efficiency.

Thanks to the automated nature of the cryogenic deflashing process, we are capable of providing this service for both small and large production batches. This is particularly important in industries requiring high precision and repeatability, such as automotive, machinery manufacturing and medical technology.