Flat nozzles in film manufacturing
When manufacturing special films, various types of adhesive are applied to both sides of long sheets of film depending on the specific application. The film is then dried by a series of surface nozzles that blow air onto the sheets. At the end of the line, the cooled films are cut and wound onto rolls. The nozzles have to be cleaned after each new production job. The amount of residue on the nozzles depends on the adhesive used. The cleaning process is time consuming and can take up to half an hour per nozzle. With over 30 surface nozzles per line, cleaning can easily take an entire day. When order specifications change frequently, the cleaning time increases considerably. The mechanical cleaning which is often required damages the surfaces of the nozzles over time.
ChemCoat® dramatically improves the nonstick properties of the nozzle surfaces. Less adhesive sticks to the nozzles, and any remaining residue can be easily removed with a rag. The nozzles are protected from wear. Electrical conductivity is retained despite the coating, so the films do not become electrically charged.
The effort required to clean the flat nozzles was reduced by 95% after the nozzles were coated. Productivity increased considerably, because entire cleaning shifts could be eliminated.