Patent · US Active

Use of spherical metal particles as laser-marking or laser-weldability agents, and laser-markable and/or laser-weldable plastic

US8318262B2 · kind B2 · utility

1Cited by

25References

24Claims

0Family size

Assignee

ECKART GmbH · DE

Inventors

Marco Greb · Hattersheim, DE
Martin Schaal · Pommelsbrunn, DE
Thomas Schuster · Achern, DE
Walter Ziegler · Trier, DE

Key dates

Filing date	Aug 18, 2007
Grant date	Nov 27, 2012
Priority date	—
Expiry date	Jan 14, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/256
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to the use of spherical metal particles, which are free of antimony and/or antimony-containing compounds, as a laser marking agent or laser weldability agent in a plastic, wherein the particle size distribution of the spherical metal particles, as determined by means of laser granulometry, in the form of the volume-averaged cumulative undersize particle size distribution, has a D99 value of <110 μm, a D90 value of <75 μm, and a D50<45 μm.The invention further relates to a laser-markable and/or laser-weldable plastic which a laser marking agent consisting of spherical metal particles, which are free of antimony and/or antimony-containing compounds, wherein the particle size distribution of the spherical metal particles, as determined by means of laser granulometry, in the form of the volume-averaged cumulative undersize particle size distribution, has a D99 value of <110 μm, a D90 value of <75 μm, and a D50<45 μm.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.