Patent ID: 9458533
Filing Date: 2016-10-04
CPC Classification: C23C

Claim Text:
1. A device for the coating of running substrates moving in a direction of travel, the device comprising: a confinement enclosure with an entry opening and an exit opening through which the substrates pass; a source of vapour of the coating material disposed in the confinement enclosure, a treatment zone defined by a tubular passage delimited by walls that extend between the entry opening and the exit opening in the confinement enclosure communicating with the source of vapour through at least one treatment opening in the walls, the source of vapour being configured and operable to generate a vapour flow for coating the substrates; a regulation unit to control flow of said vapour through said treatment opening between an inside of the confinement enclosure and an inside of the tubular passage, wherein the regulation unit comprises obturation elements connected to be moved between an open position in which the flow of said vapour can pass from the confinement enclosure through the treatment opening towards the passage and the treatment zone and a closed position in which the treatment zone is isolated with respect to the confinement enclosure and the source of vapour, the confinement enclosure being configured to allow free circulation and distribution of the vapour around the passage, wherein the obturation elements comprise slats having an oblong shape, the longitudinal direction of which extends parallel to the direction of travel of the substrates between the entry opening and the exit opening of the confinement enclosure; wherein the slats comprise a succession of parallel slats forming venetian blinds; wherein in the open position, each of the slats extend at a distance from one another enabling the flow of the vapour to pass between the slats towards the treatment zone and in the closed position, touch one another to close the treatment opening and isolate the vapour source with respect to the treatment zone by rotation of the slats.