Verfahren zum Verschweissen thermoplastischer Fügeteile mittels Diodenlaserstrahlung

摘要

A process for welding thermoplastic seams using a diode laser, comprises fixing sections together and then melting the surfaces to be joined, and cooling. The plastic sections are transparent to laser light, and one of the section surfaces is supplied with a plasma coating and/or pigment. The laser is then directed at the transparent sections and is absorbed by the polymer layer and/or plasma pigment, warming and melting the surfaces. A process for welding thermoplastic seams using a diode laser, comprises fixing sections together and then melting them at the surfaces to be joined, after which they are cooled. The plastic sections are transparent to laser light, and one of the section surfaces is supplied with a plasma coating and/or plasma pigment, so the coating is located between the sections when they are placed together. The laser is then directed at the transparent sections and is absorbed by the polymer layer and/or plasma pigment, which then warms and melts the surfaces. During the cooling phase, the sections are pressed together. The laser absorbing material is e.g. an adhesive enriched with soot particles.