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TECHNOLOGICAL WATCH SERVICE
PATENTS

METHOD FOR PREPARING A COMPOSITE OF METAL AND RESIN

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.

» Number: US2015108088 (A1)

» Publication Date: 15//2/22/0

» Applicant: TAISEI PLAS CO LTD?[JP] + (TAISEI PLAS CO., LTD)

» Inventor: NARITOMI MASANORI?[JP]; ANDOH NAOKI?[JP] +

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This project has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement n° [605658].

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