Top plate for metal can, method and apparatus for repairing same

Abstract

[PROBLEMS] A top plate for a metal can, and a correction method and a correction apparatus for the top plate for a metal can are provided that can suitably correct a damaged portion of a laminated layer damaged during spot welding for attaching a hand ring, while preventing environmental contamination. [MEANS FOR SOLVING PROBLEMS] A correction film 15 for correcting a damaged portion 14 of a laminated layer 5 damaged by spot welding is formed over a film formation area in a predetermined area including the damaged portion 14 on one surface of a top plate body 3. The correction film 15 is press-bonded onto the film formation area by a heated roller 41 having an outer circumferential surface shape corresponding to a surface shape of the film formation area.

Description

technical field [0001] The present invention relates to a roof plate for metal cans, a repair method thereof, and a repairing device, and in particular to a laminate suitable for repairing a laminate formed when a gasket for wristband attachment is spot-welded on a roof main body formed of laminated metal plates formed thereon. The invention relates to a roof plate for a metal tank at a damaged position, a repair method thereof and a repair device. Background technique [0002] Conventionally, a metal tank such as an 18-liter tank composed of a top plate, a tank body, and a bottom plate has been used as a device for containing various liquid contents such as petroleum, paint, chemicals, or food. [0003] As such a metal can, from the viewpoint of preventing corrosion (rusting, etc.) of the can and further preventing the quality of the contents in the can from deteriorating, it is common to form a laminated layer made of a resin material on the inner surface of the can. [0...

AI Technical Summary

Problems solved by technology

[0011] However, in the conventional repair method using baking varnish, since liquid coating is performed, not only the thickness of the coating film is unstable, but also a sufficient film thickness cannot be obtained, and furthermore, the damaged position of the laminated layer cannot be properly repaired, resulting in damage caused by the can. Corrosion of the parts corresponding to the damage locations on the inner surface of the tank due to the contents in the tank

[0012] In addition, in the related conventional repair method, the problem of environmental pollution due to scattering of solvents and the like into the atmosphere during baking of liquid paint also arises.

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