Invention Grant
- Patent Title: Colored retroreflective articles
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Application No.: US15308646Application Date: 2015-04-30
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Publication No.: US10197714B2Publication Date: 2019-02-05
- Inventor: Shri Niwas , Michael A. McCoy , Ying Xia
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Agent Jeffrey M. Olofson
- International Application: PCT/US2015/028394 WO 20150430
- International Announcement: WO2015/171406 WO 20151112
- Main IPC: G02B5/128
- IPC: G02B5/128 ; B32B3/00 ; B32B7/02 ; G02B5/12 ; G02B5/124 ; A41D13/01

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.
Public/Granted literature
- US20170192142A1 COLORED RETROREFLECTIVE ARTICLES Public/Granted day:2017-07-06
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