LASER-WELDED ARTICLE OF LASER-TRANSMISSIBLE WORKPIECE INCLUDING ALKALINE EARTH METAL SALT OF ANTHRAPYRIDONE ACID DYE

摘要

A laser-welded article comprises: a laser-transmissible workpiece made from a laser-transmissible colored resin composition including a resin and an alkaline earth metal salt of an anthrapyridone-type acidic dye represented by the following chemical formula [in the chemical formula, R⁷ is allowed to be the group presented by chemical formula (2) and at least one of R¹, R², R³, R⁴, R⁵, R⁶, R⁷, R⁸, R⁹, and R¹⁰ is SO₃M_1/2 that M is an alkaline earth metal]and a laser-absorptive workpiece putting the laser-transmissible workpiece together, wherein the workpieces are welded at the put position thereof by irradiated laser towards the laser-transmissible workpiece that transmits therethrough and is absorbed into the laser-absorptive workpiece.