During the production of special films, large sheets of film have to be double-coated with adhesive whose material properties differ depending on the application. After that, the film is dried using several flat fan nozzles arranged in a row. These nozzles blow air onto the sheets of the film. At the end of the plant, the cooled film is cut and finally wound onto rolls.
The nozzles need to be cleaned after each production job. Depending on the adhesive used, the intensity of the adhesions differs so that it might take up to 30 minutes to clean a single nozzle. But the duration of the cleaning process is not the only disadvantage. In the long run, this mechanical cleaning process will damage the surface and thus the functionality of the nozzle.
When using TempCoat® (formerly known as ChemCoat®) for surface optimisations in the plastics industry, the nozzle surfaces’ non-stick properties are considerably improved. Less adhesive remains stuck to the nozzles, and the adhesive residues can be easily wiped off with a cloth. Additionally, the nozzles become resistant to wear and tear. Since the coating does not affect the electrical conductivity, the film does not become electrically charged. Thanks to the coating, cleaning requirements for the flat nozzles can be reduced by 95%, which results in significantly increased productivity.