Web charging apparatus

Details Web charging apparatus Web charging apparatus

1991-06-26

1992-08-18

Schor, Kenneth M.

Coating apparatus

With means to apply electrical and/or radiant energy to work...

Electrostatic and/or electromagnetic attraction or...

427141, 427 27, 118625, 118627, B05D 314

Patent

active

051389711

ABSTRACT:
A web charging apparatus, for use in a coating system for applying various coating liquids onto a web which has been previously charged by a static field in which conductive wires form a corona discharge electrode. The diameter of the wires is in a range of 100-200 .mu.m, and the tension of the wires is not less than 1 kg. Intermediate holding frames for holding the wires are also provided. The web charging apparatus reduces the voltage irregularities in the width direction of the web and the irregular thickness of the coating liquid in the transfer direction.

REFERENCES:
patent: 5074240 (1991-12-01), Honma

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