DEVICES AND METHODS FOR ORIENTING PLATELET-SHAPED MAGNETIC OR MAGNETIZABLE PIGMENT PARTICLES
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
N/A
app pub date -
Nov 20, 2015
filing date -
Nov 27, 2014
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
The present invention relates to the field of devices and processes for producing optical effect layers (OEL) comprising magnetically bi-axially oriented platelet-shaped magnetic or magnetizable pigment particles, in particular for producing said OELs as anti-counterfeit means on security documents or security articles or for decorative purposes. The process described herein comprises the step of a) applying on a substrate surface a radiation curable coating composition comprising platelet-shaped magnetic or magnetizable pigment particles, b) exposing the radiation curable coating composition to a dynamic magnetic field of a magnetic assembly comprising a Halbach cylinder assembly, and c) at least partially curing the radiation curable coating composition of step b) so as to fix the platelet-shaped magnetic or magnetizable pigment particles in their adopted positions and orientations, said step c) being carried out partially simultaneously or simultaneously with step b).
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully