Negative pressure corona treating station with improved sealing

Details Negative pressure corona treating station with improved sealing Negative pressure corona treating station with improved sealing

1987-11-09

1988-10-11

Hix, L. T.

Electricity: electrical systems and devices

Electric charging of objects or materials

361230, 427 39, 427 40, H01T 1900

Patent

active

047775572

ABSTRACT:
A device for the continuous treatment of surfaces of thin sheet material (24) includes a treatment roller (7) arranged in a treatment chamber (1) operated at a reduced pressure. A pair of guide rollers (17) and (18) guide a web to be treated through the chamber (1). Each guide roller is sealed by a sealing unit (22) and (23) to provide greater pressure reduction inside the chamber. The sealing units are hollow, with vacuum ports (27) exposed to the sealing surface (26) formed with the guide rollers (17) and (18). A corona electrode (14) is arranged in the wall of this treatment chamber (1) in such a manner that its insulation (15) forms one part of the wall, but the high voltage element (16) of the corona electrode (14) is located outside of the treatment chamber.

REFERENCES:
patent: 2844731 (1958-07-01), Plonsky et al.
patent: 3503859 (1970-03-01), Goncarovs et al.
patent: 4340926 (1982-07-01), Payne
patent: 4451497 (1984-05-01), Dolezalek et al.
patent: 4615906 (1986-10-01), Kolbe et al.

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