Method for electrodeposition repair coating of the end of an eas

Details Method for electrodeposition repair coating of the end of an eas Method for electrodeposition repair coating of the end of an eas

Filed on

1976-01-19

Date issued

1978-03-28

Examiner

Williams, Howard S.

Patent Class

Chemistry: electrical and wave energy

SubClass

Processes and products

SubSubClass

Electrostatic field or electrical discharge

Other Related Categories

C25D 1318, C25D 1320

Type

Patent

Status

active

Patent number

040813444

Description

ABSTRACT:
In repairing by electrodeposition coating an end or top plate of an easy-open can along a score groove where the material metal has been exposed or along a deteriorated coated film chiefly on the reverse side of said end, a sine wave A. C. voltage is imparted as the bath voltage under the particular conditions, wherein the electric current of reverse direction is effectively utilized to effect penetration of the deteriorated coated part or removal of wax. In this case, special advantage can be obtained if an electrode made of the particular metal having an anodic oxidation film thereon is used.

REFERENCES:
patent: 3622485 (1971-11-01), Preece et al.
patent: 3847786 (1974-11-01), Landauer et al.
patent: 3878078 (1975-04-01), Tanaka et al.
patent: 4005000 (1977-01-01), Kraska

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