Patent · US Active

Multilayer, white, laser-cuttable polyester film

US7833617B2 · kind B2 · utility

2Cited by

1References

18Claims

0Family size

Assignee

Mitsubishi Polyester Film GmbH · US

Inventors

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

Key dates

Filing date	Oct 31, 2007
Grant date	Nov 16, 2010
Priority date	—
Expiry date	Oct 31, 2027

Classification

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

Abstract

The invention relates to a white, coextruded, oriented polyester film with a base layer (B) and with at least one outer layer (A), where the base layer (B) includes from 2 to 35% by weight, based on the weight of the base layer (B), of a whitening pigment and/or void-forming incompatible polymer, and from 0.01 to 15% by weight, based on the weight of the base layer (B), of pigment that absorbs laser energy. The outer layer (A) includes from 1.0 to 35% by weight (based on the weight of the outer layer (A) of whitening pigment and/or void-forming incompatible polymer, and this pigment and/or polymer is identical with or different from the pigment and/or polymer in the base layer (B). The invention further relates to processes for production of these films and to their use as laser-cuttable film.

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