Patent · US Active

Colored retroreflective articles

US10197714B2 · kind B2 · utility

0Cited by

39References

24Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Shri Niwas · Maple Grove, US
Michael A. McCoy · Battle Ground, US
Ying Xia · Woodbury, US

Key dates

Filing date	Apr 30, 2015
Grant date	Feb 5, 2019
Priority date	—
Expiry date	Apr 30, 2035

Classification

Technology area (CPC A)Human Necessities
CPC primaryA41D13/01
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Retroreflective articles include a layer of optical elements, the layer of optical elements being divided into at least a first segment (110) and second segment (120), and a bead bond layer (170) containing a colorant. The optical elements are partially embedded in the bead bond layer. The optical elements include transparent microspheres (140), a transparent polymeric layer (180), and at least one reflective layer. In the first segment of optical elements, the reflective layer is a dielectric reflective layer (150), and in the second segment of optical elements, the reflective layer is a reflective metallic layer (160). The retroreflective articles have improved wash durability.

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