| 摘要 |
Provided is a laser bonding method which is a highly reliable laser bonding method for a thermoplastic resin and a metal, wherein the adhesiveness at an interface between a thermoplastic resin and a metal is improved to prevent peeling due to heat stress at the time of bonding. Accordingly, the method includes a step of forming an oxide layer having a higher oxygen functional group content than a bulk thermoplastic resin by subjecting at least a thermoplastic resin on the side of a bonding interface to a surface modification treatment prior to bonding, and the thermoplastic resin and a metal are bonded to each other by applying pressure and irradiating a laser in a state where the surface energy of the metal on the bonding surface side is increased to be larger than that of the thermoplastic resin having the oxide layer formed thereon. |
