Method for web coating by means of an electron beam

Details Method for web coating by means of an electron beam Method for web coating by means of an electron beam

1989-04-10

1990-10-02

Pianalto, Bernard

Coating processes

Measuring, testing, or indicating

427 42, B05D 306

Patent

active

049606077

ABSTRACT:
In a method for coating strip material by means of an electron beam line evaporator, deflecting in a time-invariant program the electron beam to a plurality of dwell points arranged along a path normal to the direction of strip travel, sensing film thickness in a time-variant programmed mode at a plurality of positions arranged along a course normal to said direction of strip travel and subsequent to said path in said direction of strip travel, controlling in accordance with said programmed mode the dwell of said electron beam at selected dwell points to provide uniform film thickness distribution on said strip.

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