Metallic squeeze-out tube with resinous layer on its surface

Details Metallic squeeze-out tube with resinous layer on its surface Metallic squeeze-out tube with resinous layer on its surface

1977-08-26

1980-07-22

Tollberg, Stanley H.

Dispensing

Collapsible wall-type container

220457, B65D 3516

Patent

active

042135419

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: 2411024 (1946-11-01), Bruun
patent: 2686616 (1954-08-01), Barlow
patent: 2860801 (1958-11-01), Nielsen
patent: 3817427 (1974-06-01), Neff et al.
patent: 4032043 (1977-06-01), Lajovic

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