Patent · US Active

Laser-markable film

US7541088B2 · kind B2 · utility

7Cited by

12References

22Claims

0Family size

Assignee

Mitsubishi Polyester Film GmbH · US

Inventors

Cynthia Bennett · Wiesbaden, DE
Holger Kliesch · Ginsheim-Gustavsburg, DE
Bodo Kuhmann · Runkel, DE
Martin Jesberger · Mainz, DE

Key dates

Filing date	Sep 24, 2007
Grant date	Jun 2, 2009
Priority date	—
Expiry date	Sep 24, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31786
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The present invention is directed to a biaxially oriented, heat-set, at least two-layer coextruded film formed from polyethylene terephthalate (PET) or polyethylene 2,6-naphthalate (PEN) that optionally includes additional comonomer-derived units. The film includes a base layer and at least one outer layer. The base layer includes a white pigment and a laser absorber which has been coated with a carbonizing polymer.

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