Method of producing metallic flakes

Details Method of producing metallic flakes Method of producing metallic flakes

1998-11-09

2001-11-20

Hughes, S. Thomas (Department: 3726)

Metal working

Foil or other thin sheet-metal making or treating

Method

C427S404000, C427S250000, C264S140000

Reexamination Certificate

active

06317947

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention is directed to ultra-thin protective, decorative metallic flakes and a process for producing the flakes. The flakes may produce either prismatic effects or a simple color coating when applied to a variety of surfaces. The prismatic effects, which are generated by holographic methods, enable information to be included on the flakes for document and product authenticity.
SUMMARY OF THE INVENTION
The present invention is directed to protective, decorative metallic flakes and a method of producing such flakes by depositing a release layer, a resin layer and a metal layer on a polyplastic web in that order. The metal and resin layers are then removed in the form of metallic flakes by treating the coated polyplastic web with a solvent.
The process is economically advantageous in that it produces a large quantity of ultra-thin metallic flakes at low cost as compared to other known processes that produce metallic powders and chips. Because the metallic flakes are very thin, a small amount of the flakes can replace larger, heavier and more costly powders and chips in a variety of applications.


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