Fuel tank made from aluminum coated steel sheet

Details Fuel tank made from aluminum coated steel sheet Fuel tank made from aluminum coated steel sheet

2005-06-14

2005-06-14

Vanderpuye, Kenneth (Department: 2661)

Receptacles

Vehicle mountable tank

C427S156000, C029S424000

Reexamination Certificate

active

06905041

ABSTRACT:
An Al-coated steel sheet is improved in anti-scratching property during press-working and corrosion-resistance to a stored fuel by direct formation of an alkali-soluble resin film on an Al-coated steel sheet. An alkali-soluble resin, which can be dissolved in an alkali liquid of pH 9.0 or higher, is preferably urethane or acrylic resin with an acid value of 40-90 having a carboxyl group in its molecule. Alkali metal may be substituted for 1-50% hydrogen atom of the carboxyl group. A powdery synthetic resin at a ratio of 1-25 mass % and/or powdery silica at a ratio of 1-30 mass % may be dispersed in the resin film. The resin film is preferably of 0.2-5.0 μm in thickness. After the Al-coated steel sheet is painted with the resin, it is shaped to upper and lower halves of a fuel tank and washed with an alkali to dissolve off the resin film. The upper and lower halves are welded together and coated with a paint at their external surfaces to fabricate a fuel tank.

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PMF flowformingplus www.pmfind.com/process/pressforming.ase.
Press Forming http://Peterson-mfg.com/Press.html.
Merriam Webster's Collegiate Dictionary, 10th Ed., p 458, 1997.
Abstract of Japanese Patent No. JP53-19981A, “Steel Sheet Coated with Chromate Films Differentiated in Thickness”, 5 pp.

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