Multilayered label

US5843547A · kind A · utility

Assignee

• BEIERSDORF AG · DE

Inventors

• Klaus Kulper · Pinneberg, DE
• Hans-Christian Riekhof · Hamburg, DE
• Arne Koops · Mölln, DE

Key dates

• Filing date: Mar 12, 1996
• Grant date: Dec 1, 1998
• Expiry date: Mar 12, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31786
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Multilayered label comprising a) a base layer made of plastic containing b) an additive which exhibits a color change under light radiation, in particular laser irradiation, and which c) is coated on one side with a self-adhesive composition which d) is, if desired, covered by a release paper or a release film, where e) the base layer is covered on the other side by one or more protective films arranged one on top of the other which f) are transparent, permeable to laser irradiation and are provided with a self-adhesive coating.