Patent · US Active

Laser markable security film

US9012018B2 · kind B2 · utility

0Cited by

43References

20Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Carlo Uyttendaele · Berchem, BE
Bart Aerts · Rumst, BE
Bart Waumans · Mortsel, BE
Ingrid Geuens · Emblem, BE

Key dates

Filing date	Dec 17, 2010
Grant date	Apr 21, 2015
Priority date	—
Expiry date	May 3, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31931
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A security film including a support (1) and a laser markable layer (3), wherein the laser markable layer includes i) a laser additive; ii) a polymer selected from the group consisting of polystyrene, polycarbonate and styrene acrylonitrile; iii) an initiator; and iv) at least 15 wt % of radiation curable compound based on the total dry weight of the laser markable layer, wherein the radiation curable compound has a viscosity of less than 100 mPa·s at 25° C. and at a shear rate of 100 s−1. A security document and a method for preparing the security film are also disclosed.

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