Method and apparatus for applying viscous material to a substrat

Details Method and apparatus for applying viscous material to a substrat Method and apparatus for applying viscous material to a substrat

1992-06-16

1994-06-21

Drodge, Joseph W.

Coating apparatus

Projection or spray type

118323, 2394245, 2395905, B05B 1504, B05B 134

Patent

active

053225643

ABSTRACT:
A layer of viscous material is applied to a substrate by constricting a stream of pressurized viscous material prior to entry into a chamber wherein the constricted filament-shaped stream is acted upon by radially inwardly and forwardly oriented currents of compressed air which reduce the thickness of the stream and issue with such stream from the chamber through an orifice. The orientation of air currents in the chamber is such that the filament is not imparted a swirling movement. The flow of air issuing from the chamber through the orifice forms a hollow cone which surrounds the filament of viscous material on its way toward contact with the substrate.

REFERENCES:
patent: 1756744 (1930-04-01), Hatch
patent: 2715385 (1955-08-01), Yates
patent: 3049439 (1962-08-01), Coffman
patent: 3062455 (1962-11-01), Reip
patent: 4891249 (1990-01-01), McIntyre
patent: 4987854 (1991-01-01), Hall
patent: 4995333 (1991-02-01), Keller et al.

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