Use of a mixture comprising spherical metal particles and metal flakes as laser-marking or laser-weldability agents and laser markable and/or laser weldable plastic

US8877332B2 · kind B2 · utility

Assignee

• ECKART GmbH · DE

Inventors

• Stefan Trummer · Koblenzer Straße, DE
• Martin Schaal · Pommelsbrunn, DE
• Marco Greb · Hattersheim, DE

Key dates

• Filing date: Nov 19, 2008
• Grant date: Nov 4, 2014
• Expiry date: Mar 13, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/256
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The use of a mixture with spherical metal particles and metal flakes as a laser marking or laser weldability agent in a plastic, wherein the particle size distribution of the spherical metal particles and metal flakes, as determined with laser granulometry, in the form of the volume-averaged cumulative undersize particle size distribution, has a Dmixture, 90 value of <100 μm and a Dmixture, 50 <60 μm. Further, a masterbatch comprising a mixture with spherical metal particles and metal flakes also can be used. Additionally, the present subject matter may further relate to a laser markable and/or a laser weldable plastic comprising a mixture with spherical metal particles and metal flakes.