公开(公告)号：US20230312992A1

公开(公告)日：2023-10-05

申请号：US18023613

申请日：2020-12-17

Applicant: NITTO DENKO CORPORATION

Inventor： Masataka NISHIWAKI ,  Toshiki IKAMI ,  Keigo SHIMOOKA

IPC: C09J7/38 ,  C09J11/04

CPC classification number: C09J7/385 ,  C09J11/04 ,  C09J2203/326 ,  C09J2301/302 ,  C09J2301/408

Abstract: Provided is a PSA sheet having limited light transmission with reduced PSA-entering light. A PSA sheet having a PSA layer is provided. The PSA layer comprising at least two species of colorants. The PSA layer has a light transmittance of 30% or lower and a light reflectance of 8% or higher.

公开(公告)号：US20230323161A1

公开(公告)日：2023-10-12

申请号：US18023610

申请日：2021-01-26

Applicant: NITTO DENKO CORPORATION

Inventor： Masataka NISHIWAKI ,  Toshiki IKAMI ,  Keigo SHIMOOKA

IPC: C09J7/38 ,  H10K59/80 ,  C09J7/10 ,  C09J11/04 ,  B32B15/082 ,  B32B27/30

CPC classification number: C09J7/385 ,  H10K59/80 ,  C09J7/10 ,  C09J11/04 ,  B32B15/082 ,  B32B27/308 ,  C09J2203/326 ,  C09J2301/302 ,  C09J2301/408 ,  C09J2400/166 ,  C09J2433/00 ,  B32B2307/41 ,  B32B2307/4026 ,  B32B2457/206 ,  B32B2264/1022 ,  B32B2307/748 ,  B32B2264/108

Abstract: To provide a PSA sheet capable of providing good concealment to an adherend whose surface to which the PSA sheet is applied has been processed. Provided is a PSA sheet having a PSA layer. The PSA layer has a light transmittance of 20% or lower and an L* value of 20 or higher and 70 or lower, defined in the L*a*b* color space.

公开(公告)号：US20230312999A1

公开(公告)日：2023-10-05

申请号：US18023609

申请日：2021-01-26

Applicant: NITTO DENKO CORPORATION

Inventor： Masataka NISHIWAKI ,  Toshiki IKAMI ,  Keigo SHIMOOKA

IPC: C09J133/00 ,  B32B7/12 ,  B32B15/08 ,  B32B27/30 ,  B32B27/20 ,  H10K59/80

CPC classification number: C09J133/00 ,  B32B7/12 ,  B32B15/08 ,  B32B27/308 ,  B32B27/20 ,  H10K59/87 ,  B32B2307/4026 ,  B32B2307/414 ,  B32B2457/20

Abstract: Provided is a pressure-sensitive adhesive sheet which has such light-transmitting properties that the pressure-sensitive adhesive sheet hides an adherend and the surface of the adherend can be inspected through the pressure-sensitive adhesive sheet. The pressure-sensitive adhesive sheet includes a pressure-sensitive adhesive layer. The pressure-sensitive adhesive layer contains at least two colorants. The pressure-sensitive adhesive sheet has a total light transmittance of 5% or greater. The pressure-sensitive adhesive layer has a haze of 20 or greater.

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.