Corona charging of plastic and apparatus therefor

Details Corona charging of plastic and apparatus therefor Corona charging of plastic and apparatus therefor

1990-04-18

1991-09-24

Berman, Jack I.

Radiant energy

Corona irradiation

361225, 361229, 361230, 361233, 42218604, 42218605, 422907, 204164, 264 26, 1562726, H01T 1904

Patent

active

050515861

ABSTRACT:
A corona charging method and apparatus is disclosed for charging discrete and relatively isolated three-dimensional surfaces of various compositions having a generally exposed surface from which the three dimensional surface extends. The applied charge serves to significantly enhance the wetting and bonding properties of the respective surfaces and is conducted with a relatively concentrated corona emission from discharge electrodes connected to a high voltage source and directed toward the three dimensional surfaces overlying an air gap. The exposed and more accessible surfaces can be treated concomitantly with a field effect diffusion of corona from additional electrodes directed generally toward the exposed surfaces of the composition.

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