| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a package film with an inner surface coated with a treatment agent for imparting a desired function except for a region to be thermally bonded during bag making, capable of accurately positioning a product description printing pattern on the outer surface of the package film with the coating pattern of the treatment agent which even can be transparent, so that thermal bonding with a sealant film in processing can be accurately and easily performed.SOLUTION: The method for manufacturing a packaging film includes positioning by printing registration control with use of a registering mark A printed on the occasion of printing a product description printing and a registering mark B printed on the occasion of applying a treatment agent having a desired function on a sealant film layer. The engraving for imparting an application pattern of the treatment agent and the engraving for imparting the registering mark B are given to the same plate cylinder. The treatment agent is supplied to the engraving for imparting an application pattern of the treatment agent, and a coloring ink is supplied to the engraving for imparting the registering mark B. |
