Vacuum box with variable stage volume to improve coating uniform

Details Vacuum box with variable stage volume to improve coating uniform Vacuum box with variable stage volume to improve coating uniform

1984-03-16

1985-10-08

Morgenstern, Norman

Coating apparatus

With vacuum or fluid pressure chamber

118410, C23C 1308, B05C 302

Patent

active

045453217

ABSTRACT:
A device for the application of at least one cast layer (7) on a moving sheet-shaped substrate (4) has a rotating casting roll (1) which guides the substrate. A pouring vessel (8) is arranged adjacent to the casting roll while leaving a casting gap (13). A suction device with a housing (15) has a low pressure chamber (16) extending from the gap (13) to a partition (25) and has a vacuum chamber (17) extending from the partition (25) to an end wall (26). Partition (25) and/or end wall (26) can be adjusted in circumferential direction. The low pressure chamber (16) and the vacuum chamber (17) are connected with each other by means of a bypass (51). In this way, even under varying operating conditions, a high constancy of the pressure in the low pressure chamber (16) can be attained.

REFERENCES:
patent: 3503370 (1970-03-01), Ishiwata et al.
patent: 4335672 (1982-06-01), Krussig

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