Invention Grant
- Patent Title: Colored retroreflective articles
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Application No.: US15113088Application Date: 2015-01-27
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Publication No.: US10281623B2Publication Date: 2019-05-07
- Inventor: Michael A. McCoy , Shri Niwas
- 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/US2015/012992 WO 20150127
- International Announcement: WO2015/175024 WO 20151119
- Main IPC: G02B5/22
- IPC: G02B5/22 ; A41D27/08 ; B29D11/00 ; G02B5/128 ; B29K105/16 ; B29K505/14

Abstract:
Retroreflective articles include a layer of optical elements (110,120,130), embedded in a bead bond layer (140). The optical elements include transparent microspheres (110), at least one colored polymeric layer (120) covering the transparent microspheres, and a reflective layer (130) covering the colored polymeric layer. The polymeric layer includes at least one nanopigment. The transparent microspheres have a diameter range of 80-120 micrometers, with at least 75% of the transparent microspheres having a diameter range of 85-105 micrometers.
Public/Granted literature
- US20160349416A1 COLORED RETROREFLECTIVE ARTICLES Public/Granted day:2016-12-01
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