Invention Grant
- Patent Title: Decorative sheet
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Application No.: US15756486Application Date: 2016-09-02
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Publication No.: US10661538B2Publication Date: 2020-05-26
- Inventor: Shinichi Miyamoto , Masamitsu Nagahama , Akira Sato , Masatoshi Takahashi
- Applicant: TOPPAN PRINTING CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: TOPPAN PRINTING CO., LTD.
- Current Assignee: TOPPAN PRINTING CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Squire Patton Boggs (US) LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@237eede0
- International Application: PCT/JP2016/075834 WO 20160902
- International Announcement: WO2017/038980 WO 20170309
- Main IPC: B32B27/08
- IPC: B32B27/08 ; B32B27/20 ; B32B27/32 ; B32B7/12 ; B32B27/18 ; B44C5/04

Abstract:
An object of the present invention is to provide a decorative sheet excellent in post-processability and usable for flame-retardant application. A decorative sheet (1) according to one aspect of the present invention includes a plurality of resin layers. At least one layer of the resin layers is formed of a uniaxially stretched resin sheet (3) or a biaxially stretched resin sheet (3) constituted of a thermoplastic resin composition. The thermoplastic resin composition is produced by adding an inorganic pigment vesicle to a polyolefin-based resin. The inorganic pigment vesicle is produced by including an inorganic pigment in a vesicle having a monolayer outer membrane. The uniaxially stretched resin sheet (3) and the biaxially stretched resin sheet (3) have a value of a dichroic ratio R of R≥0.3. The value is calculated from absorbance peak values at a wave number of 997(±5) cm−1 of an infrared absorption spectrum in a direction parallel to an extrusion direction during film manufacturing and an infrared absorption spectrum in a direction perpendicular to the extrusion direction during the film manufacturing obtained by a polarized Fourier type infrared spectroscopy measurement using the following Formula (1). [Formula 1] Dichroic ratio R=(Absorbance peak value in parallel direction−Absorbance peak value in perpendicular direction)/(Absorbance peak value in parallel direction+Absorbance peak value in perpendicular direction) (1)
Public/Granted literature
- US20180244022A1 DECORATIVE SHEET Public/Granted day:2018-08-30
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