| 摘要 |
<P>PROBLEM TO BE SOLVED: To mutually weld transparent resins by a laser beam without providing an inclusion between them. <P>SOLUTION: This resin welding method is composed of a first process of irradiating a resin sheet Wb with a first laser beam (carbonic acid gas laser) having absorbability to form a rough surface region S, a second process of superposing a resin sheet Wa on another side on the resin sheet so that the rough surface region S becomes a contact surface and a third process of irradiating the mutually superposed resin sheets Wa and Wb with a second laser beam toward the rough surface region S to thermally weld both resin sheets Wa and Wb. <P>COPYRIGHT: (C)2007,JPO&INPIT |
