Apparatus for forming a powder layer on the surface of a metalli

Details Apparatus for forming a powder layer on the surface of a metalli Apparatus for forming a powder layer on the surface of a metalli

1977-01-26

1978-09-12

Reynolds, Wm. Carter

Coating apparatus

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

Electrostatic and/or electromagnetic attraction or...

118629, B05B 502

Patent

active

041128699

ABSTRACT:
A novel metallic squeeze-out tube suitable for packing paste-like foods whose flavor is regarded as important or the like is described herein, in which a resin powder layer is formed on its inner surface and on the outer surface of its neck portion by electrostatic painting and thereafter it is finished by baking, whereby a resin coating film that is free from pin holes and has a strong corrosion resistance can be formed. Also a novel apparatus for forming a resin powder layer for such metallic squeeze-out tube is described, in which a cylindrical high voltage electrode is disposed in the proximity of an outer surface of a neck portion of an unprocessed metallic squeeze-out tube, a rod-shaped electrode to be inserted concentrically to the interior of the neck portion is provided if the inner diameter of the neck portion is large, a cylindrical high voltage electrode that is vertically movable and adapted to eject resin powder is disposed in the interior of the body portion of the squeeze-out tube, and further, air flows at the various portions in the metallic squeeze-out tube are adjusted so as to continuously form a powder layer.

REFERENCES:
patent: 2302289 (1942-11-01), Bramston-Cook
patent: 2876358 (1959-03-01), Root
patent: 3126300 (1964-03-01), Bienefelt et al.
patent: 3182103 (1965-05-01), Blaylock, Jr. et al.
patent: 3905330 (1975-09-01), Coffee
patent: 3934055 (1976-01-01), Tamny

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