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A surface treated flake

A technology of flakes and reflective flakes, which is applied in thin material processing, inorganic pigment processing, nanotechnology for materials and surface science, etc. It can solve the problems of pigment particle shedding, mechanical wear sensitivity, etc.

Active Publication Date: 2008-09-24
VIAVI SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] [04] Disadvantageously, images made using the pigments disclosed in '375 are sensitive to mechanical abrasion because of weak bonding between the hydrophobic surface of the pigment and the aqueous carrier, and the pigment particles are easily detached from the carrier surface

Method used

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Examples

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Embodiment Construction

[0033] [33] Thin-film pigment flakes dispersed in a carrier form special effect coatings. According to the invention, the flakes of the layered film comprise a metallic reflective layer having a reflectivity of at least 50%, to provide a high reflectivity of the coating. Also, the flakes have a carrier-repelling layer on one side to align the flakes on the carrier surface with their intended side facing upwards, which is important for asymmetrical flakes.

[0034] [34] An asymmetric flake is a flake with asymmetrical features, such as a color shifting effect that is visible only on one side of the flake, or an image that is correctly reproduced on one side of the flake but has the opposite image or no image at all on the other side. Alternatively, the asymmetrical feature is the topography of the layer forming the flake; for example, one surface of the reflective layer is concave and the other surface of the reflective layer is convex, as are the other layers.

[0035] [35] T...

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Abstract

The instant invention provides an asymmetrical orientable flake for use in a carrier. The flake includes a metal reflector layer and a coating of a carrier-repellent material coated on a single side of the flake, for orienting the flake in the carrier so that the flake rests upon the carrier having a first side at least partially out of the carrier and a second side immersed in the carrier. The flake has an asymmetrical feature, such as a color shifting coating on a single surface of the reflector layer. Alternatively, the asymmetrical feature is either a relief symbol or an asymmetrical profile of the flake.

Description

technical field [0001] [01] The present invention relates to an optical sheet and a method of producing the same. More particularly, the invention relates to self-aligning, asymmetric, highly reflective flakes for use in a carrier medium. Background of the invention [0002] [02] Color shifting inks and other coating components comprising reflective pigments in a carrier are used for security and decorative purposes. [0003] [03] U.S. Patent No. 7,160,375, issued to Yamamoto on January 9, 2007, hereinafter referred to as '375, teaches an aqueous composition comprising glitter pigments coated with a hydrophobic material to enhance the Glitter properties of components such as iridescent pigments such as glass-coated metal particles. The coating on the particles was produced by mixing uncoated particles with a solution of hydrophobic material, shaking the mixture for 30 minutes, and then drying the mixture. This process produces particles coated in a hydrophobic coating. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/128C09D5/00C09D5/36C09D11/00C09C3/06C09C1/00C23C14/50G09F3/00C09D7/80
CPCC01P2004/61C09C2200/402B82Y30/00C01P2004/62C09C2200/308C01P2004/64Y10T428/2993C09C2200/1058C09C2200/401C09C1/0015C09C2210/40
Inventor 凡拉蒂米尔·P.·瑞克沙保罗·T.·科尔曼
Owner VIAVI SOLUTIONS INC
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