| 摘要 |
A system for vacuum deposition of a coating on a web material (N), includes: a feed path of the web material in a vacuum environment; along the feed path, a process roller (19) around which the web material is guided; associated with the process roller, at least one vaporization source (31) of a material to form the coating; upstream of this source, along the feed path of the web material, an applicator unit (51) to apply a masking agent to the web material according to a pre-established pattern. The applicator unit in turn comprises a printing cylinder (53), cooperating with a distributor cylinder (55) of the masking agent, and a source (57) of masking agent. The applicator unit (51) includes at the ends thereof, an adjustment device (73) separate from each other to adjust the position of the applicator unit (51) with respect to the process roller (19). |
