| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin molded article in which a first resin material and a second resin material can be firmly joined in a sealed state by preventing flow of foamed resin generated at the irradiation of laser beam.SOLUTION: The resin molded article (oil filter bracket 1) is joined by butting the first resin material (plug material 2) to the second resin material (passage forming material 3) and by the irradiation of the laser beam, and includes: a welding part 7 formed by being irradiated with the laser beam on the butting face sides of the first resin material and second resin material; and a flow preventing part 8 provided on both sides of the welding part on the butting face sides of the first resin material and second resin material, and preventing the flow of the foamed resin generated at the irradiation with the laser beam. |
