Resin-coated aluminum alloy sheet and formed body using resin-coated aluminum alloy sheet
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United States of America Patent
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Aug 9, 2016
Grant Date -
Oct 14, 2010
app pub date -
May 30, 2008
filing date -
May 31, 2007
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Abstract
A resin-coated aluminum alloy sheet which has a chromium-free surface treatment layer and has a coating film formed by applying an organic resin, and which exhibits excellent adhesiveness and excellent corrosion resistance even after being subject to severe forming such as drawing is provided. A resin-coated aluminum alloy sheet includes: an aluminum substrate having a surface treatment film on at least one surface thereof; and an organic resin film layer formed on the surface of the aluminum substrate. The surface treatment film includes 2 mg/m2 to 100 mg/m2 of zirconium in terms of metal atoms and at least any one of a polyitaconic acid, monosaccharide alcohol and disaccharide alcohol as an aluminum-ion-trapping agent.
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