Invention Grant
- Patent Title: Laminated reflective film having reduced alkali metal or alkaline earth metal to polyvinyl alcohol resin ratio
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Application No.: US14902724Application Date: 2014-07-02
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Publication No.: US10067275B2Publication Date: 2018-09-04
- Inventor: Akito Kawanami
- Applicant: Konica Minolta, Inc.
- Applicant Address: JP Tokyo
- Assignee: KONICA MINOLTA, INC.
- Current Assignee: KONICA MINOLTA, INC.
- Current Assignee Address: JP Tokyo
- Agency: Lucas & Mercanti, LLP
- Priority: JP2013-143026 20130708
- International Application: PCT/JP2014/067705 WO 20140702
- International Announcement: WO2015/005199 WO 20150115
- Main IPC: G02B5/08
- IPC: G02B5/08 ; G02B5/28 ; G02B5/20 ; B29D11/00 ; B32B7/02 ; B32B27/08 ; B32B27/20 ; B32B27/30

Abstract:
To provide a laminated reflective film having excellent discoloration resistance and adhesion between refractive index layers.A laminated reflective film including a substrate and a reflective layer including a high refractive index layer and a low refractive index layer disposed on the substrate, wherein at least one of the high refractive index layer and the low refractive index layer includes a polyvinyl alcohol resin, metal oxide particles, and a first metal ion formed of an alkali metal ion and/or an alkaline earth metal ion, and the content ratio of the first metal ion represented by the following Formula (1): content ratio of first metal ion = content of first metal ion content of polyvinyl alcohol resin × 100 ( 1 ) is 1.25 or less.
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