Plastic molded bodies having two-dimensional and three-dimensional image structures produced through laser subsurface engraving

US7704586B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Klaus-Dieter Schubel · Recklinghausen, DE
• Jürgen Kreutz · Marl, DE
• Wilhelm Wolff · Aachen, DE
• Gunther Ittmann · Groß-Umstadt, DE
• Thomas Hasskerl · Kronberg, DE
• Harald Häger · Marienheide, DE
• Ralf Richter · Dresden, DE
• Wolfgang Stuber

Key dates

• Filing date: Mar 7, 2006
• Grant date: Apr 27, 2010
• Expiry date: May 14, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

The present invention relates to plastic molded bodies having two-dimensional or three-dimensional image structures produced in the interior through laser subsurface engraving. The plastic molded bodies are made of plastic materials which have a content of nanoscale metal oxides having particle sizes from 1 to 500 nm, both the plastic material and also the included metal oxide being transparent to the laser light used for producing the image structures. The plastic materials from which the molded bodies are manufactured particularly contain metal oxides having particle sizes from 5 to 100 nm at a content of 0.0001 to 0.1 weight-percent. Typical metal oxides are nanoscale indium-tin oxide or antimony-tin oxide.