Welded cans

Receptacles – Receptacle having flexible – removable inner liner – Means for venting air trapped between the liner and its...

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220457, 428 358, 428 359, 428192, 428458, 428480, 428910, B65D 2302, B65D 2514

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active

054091292

ABSTRACT:
A tinned steel sheet having a tin deposit obtained by evenly plating tin on the surface of a base steel sheet at a deposition rate of 0.5-1.7 g/m.sup.2 is used as a surface-treated steel sheet for forming a can body. A biaxially oriented polyester film having a thickness of 5-50 .mu.m is caused to adhere to the surface-treated steel sheet with a thermosetting resin adhesive at a temperature of 180.degree.-225.degree. C. as a protective coat. The tinned steel sheet has, on its both ends, two layers of a tin-iron alloy layer having a deposition rate of 0.35-1.60 g/m.sup.2 in terms of tin content and a tin layer having a tin deposition rate of 0.10-1.35 g/m.sup.2 at a stage after the adhesion of the polyester film but before welding. Said both ends of the surface-treated steel sheet are welded to each other, and another protective coat is applied to a portion of the inner surface, which is not covered with the first-mentioned protective coat, thereby forming a welded can.

REFERENCES:
patent: 4382525 (1983-05-01), Kobayashi et al.
patent: 4387830 (1983-06-01), Kitamura et al.
patent: 4477501 (1984-10-01), Kojima
patent: 4735835 (1988-04-01), Taira et al.
patent: 4916031 (1990-04-01), Kitamura et al.

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