Fine-coating process protects surfaces from oxidisation

The coating process, similar to electroforming and dubbed Polcoat, deposits a fine polyimide sheet film directly onto the surfaces of micro-scale products manufactured in a range of industries.

Datum Developments, the Devon-based creator of Polcoat, claims the deposition process is finely controllable and represents the first time that polyimide films can be tailored in thinness to meet precision requirements.

Peter Jeffries, chief technologist at Datum Developments, said: ‘At the moment you can’t get films below 25 microns and we have developed a new film that can go down to below a micron using our new process.’

The company claims the coating process is suitable for advanced precision engineering products for energy generation, plastic electronics, and composites.

‘Our target audience has been the electronics sector because that’s what we’re familiar with. However, it’s equally applicable to the likes of the biomedical and aerospace industries,’ said Jeffries.

He added that the film would fit into high-end wet processing facilities but would not be of use to those who use ‘bucket-plating’ techniques.