CURTAIN COATING IN THE '80'S - A NEW APPROACH.

This paper details a patented curtain coater, proved in aircraft industry, which extends process limits. It is free of premature polymerization, precipitation, and excessive evaporation. No viscosity monitor or solvent make-up. Contained quantity is small, clean-up is minimized, and cost of coating change is reduced. Range of sizes. Knife parallelism is exact, settings are repeatable, thickness control is automatic. No sliding knife gaskets. Curtain coats moving product, recirculated portion falls onto rotating roll with doctor blade - no bubbles. Thinner films and higher viscosity hot-melts, waterbase, solvent base, or reactive coatings. Intermittent operation provides coil coating flexibility. Aircraft quality control forced process to mature; finishing industry benefits.