Method for preparing a composite of metal and resin

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United States of America Patent

PATENT NO 9751265
SERIAL NO

14589448

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Abstract

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It is an object of the present invention to securely and integrally join a metal and a resin, more particularly, a shaped titanium alloy substrate and a resin composition. A titanium alloy substrate is used that has undergone surface roughening by chemical etching or the like so as to have a ultrafine textured face in which bent, ridge-like protrusions having a width and height of from ten to a few hundred nanometers and a length of from a few to a few hundred microns rise up on the surface at a spacing period of from ten to a few hundred nanometers. A titanium alloy piece 1 with its surface treated is inserted into the cavity of a metallic mold for injection molding 10 and a specific resin composition 4 is injected to obtain an integrated composite 7. The main resin component of the resin composition 4 that is used can be a polyphenylene sulfide resin (PPS) or a polybutylene terephthalate resin (PBT). High injection joining strength is obtained if the resin composition contains, as an auxiliary component, a polyethylene terephthalate resin and/or polyolefin resin in the case of PBT and a polyolefin resin in the case of PPS.

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Patent Owner(s)

Patent OwnerAddress
TAISEI PLAS CO LTD11-8 NIHONBASHI-HAMACHO 1-CHOME CHUO-KU TOKYO 103-0007

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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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