Laser-markable laminate

US7033677B2 · kind B2 · utility

Assignee

• Trespaphan GmbH · DE

Inventors

• Detlef Busch · Saarlouis, DE
• Matthias Roth · Lambach, DE

Key dates

• Filing date: Feb 25, 2002
• Grant date: Apr 25, 2006
• Expiry date: Oct 30, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31913
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to a laminate consisting of a multilayer transparent film and a multilayer opaque film, which has an intermediate layer. The base layer of the transparent film contains a pigment, which absorbs illumination in the wavelength range of a laser. The laminate can be marked and inscribed using a laser.