COATING METHOD OF WATER-SOLUBLE RESIN CONTAINING COATING MATERIAL AND INK-JET RECORDING MATERIAL, AND TREATMENT METHOD OF WASTE-LIQUID

摘要

PROBLEM TO BE SOLVED: To provide a coating method of a water-soluble resin containing coating material which can prevent a mixed liquid of a coating liquid (A) supplied to a simultaneous-storied coating apparatus and discharged without being coated and a coating liquid (B) from forming a gel, and does not decrease a productivity.

SOLUTION: The coating liquid (A) containing the water-soluble resin and the coating liquid (B) containing a compound reacting with the water-soluble resin to make the coating liquid (A) gelify are simultaneously coated in layers on a supporting body by using a simultaneous layered coating apparatus, wherein the mixed liquid of the coating liquid (A) supplied to the simultaneous-layered coating apparatus and not coated, and the coating liquid (B) is made to contain a compound for preventing the gel formation.

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