Title:
REFLECTIVE SHEET, AND TRANSFER FILM FOR REFLECTIVE SHEET
Document Type and Number:
WIPO Patent Application WO/2020/203574
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: a reflective sheet which uses a cholesteric liquid crystal layer and has excellent reflection wavelength band, diffuse reflectance, reflectivity, hardness, and scratch resistance; and a transfer film for a reflective sheet. The problem is solved by a reflective sheet having a substrate, an adhesive layer, a cholesteric liquid crystal layer, and a hard-coat layer in this order, wherein the cholesteric liquid crystal layer has a wavy structure in at least a portion of a bright portion and a dark portion observed in a cross section, and has a pitch gradient structure having a spiral pitch varying in the thickness direction, with the spiral pitch being larger in the adhesive layer than in the hard-coat layer.
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Inventors:
SANETO RYUJI (JP)
YAMAMOTO AKIRA (JP)
KANEIWA HIDEKI (JP)
ISHIGURO MAKOTO (JP)
NAGAI MICHIO (JP)
YAMAMOTO AKIRA (JP)
KANEIWA HIDEKI (JP)
ISHIGURO MAKOTO (JP)
NAGAI MICHIO (JP)
Application Number:
PCT/JP2020/013407
Publication Date:
October 08, 2020
Filing Date:
March 25, 2020
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B5/30; B32B7/023; G02B1/14; G02B5/08
Domestic Patent References:
| WO2012137550A1 | 2012-10-11 | |||
| WO2018159751A1 | 2018-09-07 | |||
| WO2017018468A1 | 2017-02-02 |
Foreign References:
| JP2018180122A | 2018-11-15 | |||
| JP2004133152A | 2004-04-30 | |||
| JP2000347017A | 2000-12-15 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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