Metal deforming – With 'coating' of work
Patent
1990-10-18
1992-09-08
Larson, Lowell A.
Metal deforming
With 'coating' of work
428 358, B21C 2400
Patent
active
051448246
ABSTRACT:
In the production of a thickness-reduced draw-formed can by draw-redraw forming and bending elongation, by using a laminated metal plate comprising a metal plate and a coating layer of a thermoplastic resin having a tension of from 1.times.10.sup.7 to 8.times.10.sup.8 dyne/cm.sup.2 under an elongation of 200% at a temperature of the glass transition point plus 20.degree. C., carrying out redraw forming at a temperature at which the dynamic friction coefficient of the thermoplastic resin is smaller than 0.5 and which is higher than the glass transition point and carrying out bending elongation of the side wall of the can simultaneously with redraw forming, high reduction of the thickness of bending elongation and improvement of the corrosion resistance of the resin-coated vessel can be simultaneously attained.
REFERENCES:
patent: 3340714 (1967-09-01), Pohl et al.
patent: 3832962 (1974-09-01), Rolles
patent: 3933559 (1976-01-01), Watanabe
patent: 4269053 (1981-05-01), Agrawal et al.
patent: 4412440 (1983-11-01), Phalin et al.
patent: 4424100 (1984-01-01), McCarty et al.
patent: 4734303 (1988-03-01), Fujiwara et al.
Aizawa Masanori
Imazu Katsuhiro
Kobayashi Akira
Kobayashi Tomomi
Larson Lowell A.
McKeon Michael J.
Toyo Seikan Kaisha Ltd.
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