For maximum dry film adhesion, surfaces to be coated must be clean, dry, and free of contaminates prior to lamination. Clean material to be coated with an automatic scrubbing machine, scrub manually with acid pumice slurry, or chemically clean. Blow dry with clean, oil free air. Consult your technical representative for additional assistance. Only use pressures recommended by the laminator manufacturer to assure that the equipment will not be damaged.
Automatic lamination is also acceptable.
Allow the panels to cool for fifteen minutes. Materials should never be stacked on top of each other, as this will cause trapped dirt particles to imprint the resist from one board to the next. Stacking also traps heat and interferes with resist performance during exposure or development. Leave polyester protective sheet on boards to protect photoresist until exposure has been completed and the panels are ready for development. Higher exposures may be recommended by the technical service representative for especially difficult processes.