Device for the electrostatic application of material particles e

Details Device for the electrostatic application of material particles e Device for the electrostatic application of material particles e

1980-08-20

1982-04-13

Beck, Shrive P.

Coating apparatus

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

Electrostatic and/or electromagnetic attraction or...

118627, 118629, 118636, 427 39, 427 32, 427 41, B05B 502

Patent

active

043241980

ABSTRACT:
A device for the electrostatic application of particles entrained in a stream of gas to a non-conductive, flat substrate, typically a web or sheets of paper. The particles are electrically neutral in the stream. A charging electrode is located below the substrate in the area where the gas stream impinges on the substrate. The substrate is advancing lengthwise, and a counterelectrode is located below the substrate in the direction of advance from the charging electrode. Preferably the direction and velocity of the gas stream near the substrate and direction and velocity of the substrate itself are approximately equal. Also in the preferred form, a grounded collecting pan is located beneath the electrodes.

REFERENCES:
patent: 3000752 (1961-09-01), Jackson et al.
patent: 3868925 (1975-03-01), Smith et al.
patent: 3976031 (1976-08-01), Itoh
patent: 4011991 (1977-03-01), Masuda

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