The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2020
Filed:
Sep. 02, 2016
Toppan Printing Co., Ltd., Taito-ku, Tokyo, JP;
Shinichi Miyamoto, Tokyo, JP;
Masamitsu Nagahama, Chiba, JP;
Akira Sato, Chiba, JP;
Masatoshi Takahashi, Chiba, JP;
TOPPAN PRINTING CO., LTD., Tokyo, JP;
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 () 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 () or a biaxially stretched resin sheet () 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 () and the biaxially stretched resin sheet () 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) cmof 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=(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)