Method for manufacturing a bonded body of galvanized steel sheet and adherend

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United States of America Patent

PATENT NO 9567675
APP PUB NO 20140305903A1
SERIAL NO

14149423

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Abstract

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There is provided a technique to strongly integrate a galvanized steel sheet and a resin molded article. A hot-dip galvanized steel sheet is immersed in an aqueous solution for aluminum degreasing to form a specific roughness on the surface. The surface is covered with convex protrusions having a diameter of about 100 nm, and a chromate treatment layer appears in the surface. A resin composition comprising 70 to 97 wt % of polyphenylene sulfide and 3 to 30 wt % of a polyolefin resin is injected onto the surface. The resin composition penetrates into ultra-fine irregularities and is cured in that state, and thereby a composite in which the galvanized steel sheet and the resin molded article are strongly integrated can be obtained. The shear rupture strength of the composite is extremely high.

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Patent Owner(s)

  • TAISEI PLAS CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Andoh, Naoki Tokyo, JP 41 234
Naritomi, Masanori Tokyo, JP 50 682

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