Vacuum web coating

Details Vacuum web coating Vacuum web coating

1994-11-23

1998-09-08

Bueker, Richard

Coating apparatus

Gas or vapor deposition

Crucible or evaporator structure

118718, C23C 1600

Patent

active

058039767

ABSTRACT:
In an apparatus for vacuum web coating, an evaporation means has a plurality of separately spaced outlet nozzles through which vapour is conveyed to a deposition zone at the surface of a chilled rotatable drum in a vacuum chamber over which drum the substrate web is advanced by a web transport system. The outlet nozzle arrangement advantageously comprises a plurality of linear slots disposed transversely to the web substrate path to deliver vapour at positions disposed sequentially in the direction of the web substrate advance, the nozzle outlets being disposed on an arcuate surface around, but spaced from, the curved surface of the rotatable drum. The apparatus is particularly suitable for applying thick coatings of material such as metal on paper or plastic films.

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patent: 5224441 (1993-07-01), Felts
patent: 5302208 (1994-04-01), Grimm

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