To provide a laser joining method of a resin member providing a joined structure with a high join strength when laser-joining the resin member of a high heat resistance by using an optical absorbent, and to provide a laser joined body of the resin member.
In the laser joining method of a resin member, two or more resin members are brought into contact with each other, and irradiating the optical absorbent disposed near the contact face with laser beam to melt-weld the resin member. At least any one of the resin members is a thermoplastic resin having a glass transition point or a melting point of 300°C or higher, the optical absorbent has a weight reduction of less than 40% measured by using a differential thermal balance by heating up to 350°C.
SHIMODA MAYU
KIBE RYUTA
| JP2007532349A | 2007-11-15 |
Seiichi Yakumaru
Hiroaki Nakatani
Yuichi Koyama