Coating apparatus

摘要

In a coating apparatus having an extrusion coating head, the working value H of a back end edge which corresponds to an end portion at the downstream side of a support feeding direction of a back edge of the extrusion coating head is set to 25 mu m or less, and the straightness of said back end edge with respect to the coating width is set to 5 mu m or less. Accordingly, a coating operation to form coated films at a stable thickness can be stably performed without occurrence of streaks and coating unevenness on the films, and a judgment on coating surface characteristics can be readily performed without actually carrying the coating operation.