Intermittent coating apparatus

Abstract

An intermittent coating apparatus for intermittently coating a continuously running base member with a coating material includes a nozzle for discharging the coating material toward the base member and an absorption unit for controlling a flow of the coating material. The nozzle has a slit opened toward the base member and a manifold connected to the slit. The absorption unit includes a head having an inlet, an outlet, and a passage connecting the inlet and the outlet. The head is located in a housing. The absorption unit also includes a driving unit for sliding the head in the direction of a shaft located in the housing. By the sliding operation of the head, an absorption space is formed between an end face of the head and the manifold. In order to stop the coating operation, the supply of the coating material from an external supply opening to the inlet of the head is stopped by the sliding movement of the head. The sliding movement of the head also causes the coating material remaining in the nozzle to be absorbed into the absorption space. As a result, there is no coating material remaining between the nozzle and a roller provided for causing the base member to run. Accordingly, the coating material is not pulled out to the base member when the supply of the coating is stopped, and thus the leading edge and the trailing edge of coated areas of the base member can be straight lines.

Dependencies are inferred from the claim text.