Dielectric coating requires a higher level of control of several variables to achieve high pass rates. As the process is designed to provide electrical insulation, a critical safety feature, the coating must be within specified thicknesses, provide a given level of dielectric strength, and be free of porosity, pinholes, and other surface defects.
Parts must also function as part of the vehicle as a whole, meaning typical elements like corrosion resistance, bond strength, and durability must also be managed.
Powdertech’s visit to Gema, Switzerland.
Powdertech team, including Head of Sales and Marketing Jimmy Phillips, Technical Manager Nick Welton, and Production Engineer Stuart Hutt, visited Gema Switzerland in March 2026 as part of a major consultancy and development project with an OEM that they are working with for dielectric coating trials.
Powdertech’s Head of Sales and Marketing, Jimmy Phillips, said:
“At our own facility in Bicester, we have shown that parts can be coated to specification. We’ve designed a system where parts have the requisite dielectric strength on faces and edges, without going over thickness specs. It was a pleasure watching Nick and Stuart work with the experienced team at Gema to deliver a best-in-class solution for our client.”
Powdertech has a lot of experience within the challenging field of dielectric coating, having worked with major UK OEMs and tier one suppliers over the last five years.
And are increasingly being approached to provide consultancy services in the field, as well as coating thousands of parts a week on-site at their own powder coating lines.
For this project, Powdertech has been involved in advising on the dielectric coating of EV battery assembly components.
Initial work on the project has taken place at Powdertech’s Bicester facility, where trials have been conducted on how to coat various parts of the EV battery pack as per the client’s specifications.
Facing a dielectric coating challenge?
Powdertech has been providing dielectric coating for over five years and consultancy for the last three. You can reach out to the team or contact them to discuss your dielectric coating project requirements.
