公开(公告)号：US10703079B2

公开(公告)日：2020-07-07

申请号：US16135262

申请日：2018-09-19

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Megumi Kashiwame ,  Masashi Hattori ,  Tatsuhiko Furuta ,  Masamitsu Nagahama ,  Akira Sato ,  Masatoshi Takahashi

IPC: C08L23/12 ,  B32B27/32 ,  B32B7/12 ,  B32B27/08 ,  B32B27/18

Abstract: A decorative sheet that has a transparent resin layer having good V groove bending processability (post-processability) while maintaining high scratch resistance and transparency and a method of producing the decorative sheet. A decorative sheet (1) according to the present embodiment is a decorative sheet including at least a transparent resin layer (3) containing a highly crystalline polypropylene resin as a main component. The transparent resin layer (3) contains a low crystalline polypropylene resin added thereto in the range of 0.1 part by mass or more and 20 parts by mass or less relative to 100 parts by mass of the highly crystalline polypropylene resin, the low crystalline polypropylene resin having a tensile modulus in the range of 25 MPa or more and 500 MPa or less.

公开(公告)号：US11230631B2

公开(公告)日：2022-01-25

申请号：US15754250

申请日：2016-08-24

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Shinichi Miyamoto ,  Masashi Hattori ,  Masamitsu Nagahama ,  Akira Sato ,  Masatoshi Takahashi

IPC: C08J5/18 ,  B32B27/32 ,  B32B27/00 ,  C08J5/10 ,  B32B27/08 ,  B32B27/20 ,  B32B27/18 ,  B32B7/12 ,  B32B27/10 ,  B32B27/26 ,  C08K5/00 ,  E04F13/18 ,  E04F13/08

Abstract: To provide a decorative sheet including a transparent resin layer having high transparency and excellent surface scratch resistance from the viewpoint of the design properties and a transparent resin sheet. A decorative sheet (1) according to one aspect of the present invention has a transparent resin layer (4) containing a crystalline polypropylene resin as the main component, in which a value of a peak area ratio x represented by the following expression (1) of the transparent resin layer (4) is x≥0.4. Herein, S040, S130, and Sam in the following expression (1) are peak areas determined from an X-ray diffraction spectrum obtained by measuring the transparent resin layer with an X-ray diffractometer, S040 is the peak area from the Miller index (040) of polypropylene α crystals, S130 is the peak area from the Miller index (130) of the polypropylene α crystals, and Sam is the peak area of an amorphous material. Peak ⁢ ⁢ area ⁢ ⁢ ratio ⁢ ⁢ x = ( S ⁢ ⁢ 040 + S ⁢ ⁢ 130 ) ( Sam ) ( 1 )

公开(公告)号：US10906280B2

公开(公告)日：2021-02-02

申请号：US15754272

申请日：2016-08-24

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Shinichi Miyamoto ,  Masashi Hattori ,  Masamitsu Nagahama ,  Akira Sato ,  Masatoshi Takahashi

IPC: B32B27/32 ,  C08J5/18 ,  C08K5/527 ,  B32B27/18 ,  C08K9/10 ,  C08J5/10 ,  B32B3/30 ,  B32B27/08 ,  C08K5/00

Abstract: To provide a decorative sheet including a transparent resin layer having excellent post-processing resistance and high transparency. A decorative sheet (1) according to one aspect of the present invention has a transparent resin layer (4) containing a crystalline polypropylene resin as the main component. A value of a peak intensity ratio x represented by the following expression (1) of the transparent resin layer (4) is x≤0.65. Herein, I997, I938, and I973 in the following expression (1) are peak intensity values calculated from the absorption spectrum obtained by Fourier infrared spectrometry of the transparent resin layer, and I997 is the peak intensity value at a wavenumber of 997 cm−1, I938 is the peak intensity value at a wavenumber of 938 cm−1, and I973 is the peak intensity value at a wavenumber of 973 cm−1. Peak ⁢ ⁢ intensity ⁢ ⁢ ratio ⁢ ⁢ x = 1997 - 1938 1973 - 1938 ( 1 )