公开(公告)号：US20230212434A1

公开(公告)日：2023-07-06

申请号：US17912676

申请日：2021-03-17

Applicant: NITTO DENKO CORPORATION

Inventor： Kazuki MINOURA ,  Masataka NISHIWAKI ,  Yasushi BUZOJIMA

IPC: C09J7/38 ,  C09J11/06

CPC classification number: C09J7/385 ,  C09J11/06 ,  C09J2203/326 ,  C09J2301/302 ,  C09J2469/00

Abstract: The present invention relates to a pressure-sensitive adhesive sheet including a pressure-sensitive adhesive layer containing a base polymer and a pigment, wherein the light transmittance in the wavelength range of 380 to 500 nm is 25% or less and the light transmittance in the wavelength range of 800 to 2,500 nm is 60% or more.

公开(公告)号：US20230132305A1

公开(公告)日：2023-04-27

申请号：US17912590

申请日：2021-03-17

Applicant: NITTO DENKO CORPORATION

Inventor： Masataka NISHIWAKI ,  Kazuki MINOURA ,  Yasushi BUZOJIMA

IPC: C09J133/08 ,  C09J7/38 ,  C09J11/06 ,  C08F220/06 ,  C08F220/18 ,  C08K5/00

Abstract: The present invention relates to a pressure-sensitive adhesive sheet including a pressure-sensitive adhesive layer containing a base polymer and a pigment, the pressure-sensitive adhesive sheet having a transmittance for light having wavelengths of 380-600 nm of 25% or less, transmittance for light having wavelengths 800-2,500 nm of 60% or greater, and a change in light transmittance in the wavelength range of 600 to 800 nm of 0.1%/nm or greater.

公开(公告)号：US20230121495A1

公开(公告)日：2023-04-20

申请号：US17796122

申请日：2021-01-25

Applicant: NITTO DENKO CORPORATION

Inventor： Masataka NISHIWAKI ,  Kazuki MINOURA ,  Yasushi BUZOJIMA

IPC: C09J7/38 ,  C09J11/04 ,  C09J133/08

Abstract: The PSA sheet provided by this invention has a PSA layer. The PSA layer comprises particles PHRI. The particles PHRI present in the PSA layer has a mean particle diameter of less than 100 nm and a standard deviation of 20 nm or less. Here, the mean particle diameter and the standard deviation are determined from a number-based particle distribution by TEM analysis.

公开(公告)号：US20210163795A1

公开(公告)日：2021-06-03

申请号：US17095960

申请日：2020-11-12

Applicant: NITTO DENKO CORPORATION

Inventor： Toshiki IKAMI ,  Shigeki WATANABE ,  Yasushi BUZOJIMA ,  Naohiro KATO

IPC: C09J9/00 ,  C09J7/28 ,  C09J7/38 ,  C09J11/06

Abstract: A pressure-sensitive adhesive sheet includes a substrate layer, and a pressure-sensitive adhesive layer disposed on or over at least one side of the substrate layer. The substrate layer includes a metal layer having a thickness of 10 to 80 μm. The pressure-sensitive adhesive sheet has a total thickness of 100 μm or less, and has an electric field shielding effect of 20 dB or more and a magnetic field shielding effect of 5 dB or more as measured by the KEC method at a frequency of 100 kHz to 1000 kHz. The pressure-sensitive adhesive sheet is used for securing an internal component of a portable electronic device.

公开(公告)号：US20230128453A1

公开(公告)日：2023-04-27

申请号：US17914177

申请日：2021-03-15

Applicant: NITTO DENKO CORPORATION

Inventor： Kazuki MINOURA ,  Masataka NISHIWAKI ,  Yasushi BUZOJIMA

IPC: C09J7/38

Abstract: To provide a PSA sheet having excellent IR-blocking properties. Provided is a PSA sheet having a substrate layer as well as a PSA layer placed on one face of the substrate layer. The PSA sheet has 5% or lower light transmittance in the thickness direction in a wavelength region of 780 nm to 2500 nm.

公开(公告)号：US20230079556A1

公开(公告)日：2023-03-16

申请号：US17796098

申请日：2021-01-25

Applicant: NITTO DENKO CORPORATION

Inventor： Masataka NISHIWAKI ,  Kazuki MINOURA ,  Yasushi BUZOJIMA

IPC: C09J7/38 ,  C09J11/04

Abstract: Provided is a novel PSA sheet having limited light transmission and an increased refractive index. The PSA sheet provided by the present invention has a PSA layer. The PSA sheet has a total light transmittance of 80% or lower as well as a refractive index of 1.50 or higher.

公开(公告)号：US20230077929A1

公开(公告)日：2023-03-16

申请号：US17797750

申请日：2021-02-01

Applicant: NITTO DENKO CORPORATION

Inventor： Masataka NISHIWAKI ,  Kazuki MINOURA ,  Yasushi BUZOJIMA

IPC: C09J133/08 ,  C09J7/10 ,  C09J7/40 ,  C09J7/38

Abstract: Provided is a PSA sheet having limited light transmission, increased refractive indices for IR light and VIS light with less wavelength dependence of refractive index and good adhesive properties. The PSA sheet provided by this invention has a PSA layer. The PSA sheet has a total light transmittance below 80%. The PSA layer has a first face and a second face on the opposite side to the first face. The PSA layer comprises high-refractive-index particles. The high-refractive-index particles are concentrated in the first face side of the PSA layer. On the first face, the difference between the refractive index nVIS at 500 nm wavelength and the refractive index nIR at 940 nm wavelength is less than 0.03.

公开(公告)号：US20210032503A1

公开(公告)日：2021-02-04

申请号：US16921326

申请日：2020-07-06

Applicant: NITTO DENKO CORPORATION

Inventor： Takuya FUJITA ,  Naohiro KATO ,  Masahito NIWA ,  Yasushi BUZOJIMA

IPC: C09J7/38 ,  C09J11/08 ,  C09J133/10

Abstract: Provided is a double-sided pressure-sensitive adhesive tape that can express excellent impact resistance. The double-sided pressure-sensitive adhesive tape is a double-sided pressure-sensitive adhesive tape for use in fixing a member to be included in a mobile device, the double-sided pressure-sensitive adhesive tape including a pressure-sensitive adhesive layer, wherein the pressure-sensitive adhesive layer is formed from a pressure-sensitive adhesive composition, and wherein the pressure-sensitive adhesive composition contains an organic hollow filler.

公开(公告)号：US20190161651A1

公开(公告)日：2019-05-30

申请号：US16169077

申请日：2018-10-24

Applicant: NITTO DENKO CORPORATION

Inventor： Kenta JOZUKA ,  Naoaki HIGUCHI ,  Naohiro KATO ,  Yasushi BUZOJIMA

IPC: C09J7/38 ,  C09J133/06 ,  C09J7/40

Abstract: This invention provides a double-faced PSA sheet comprising a substrate film having first and second faces, and first and second PSA layers provided to the first and second faces of the substrate film, respectively. The first and second PSA layers have a combined thickness TPSA and the substrate film has a thickness TS at a TS/TPSA ratio value of 0.3 or less. The first and second PSA layers individually have a storage modulus G′(apply) of 0.6 MPa or less at a temperature at which the PSA sheet is press-bonded to an adherend.

公开(公告)号：US20190161650A1

公开(公告)日：2019-05-30

申请号：US16169035

申请日：2018-10-24

Applicant: NITTO DENKO CORPORATION

Inventor： Kenta JOZUKA ,  Naoaki HIGUCHI ,  Naohiro KATO ,  Yasushi BUZOJIMA

IPC: C09J7/38 ,  B32B7/12 ,  C09J7/20

Abstract: This invention provides a PSA sheet comprising a substrate layer, and a PSA layer provided to at least one face of the substrate layer. The substrate layer has a thickness TS and the PSA layer has a total thickness TPSA at a TS/TPSA ratio value of greater than 0.3, and the PSA layer has a storage modulus at 25° C., G′(25° C.) of 0.15 MPa or greater as well as a loss modulus at 25° C., G″(25° C.), of 2.0 MPa or less.