公开(公告)号：US20230034147A1

公开(公告)日：2023-02-02

申请号：US17769471

申请日：2020-09-28

Applicant: NITTO DENKO CORPORATION

Inventor： Yusuke YAMANARI ,  Makoto SAITO ,  Naoaki HIGUCHI ,  Hiroki IEDA

IPC: C09J7/38 ,  C09J7/29 ,  C09J7/25

Abstract: Provided is a pressure-sensitive adhesive tape excellent in unevenness followability. The pressure-sensitive adhesive tape of the present invention includes: a base material layer; and a pressure-sensitive adhesive layer arranged on at least one side of the base material layer, wherein the pressure-sensitive adhesive tape has a dimensional change ratio at 23° C. and 50% RH of from −0.39 to −0.20, provided that the dimensional change ratio at 23° C. and 50% RH is calculated in accordance with a predetermined equation by: cutting the pressure-sensitive adhesive tape into a belt shape having a width of 20 mm to produce a measurement sample; and tensioning the measurement sample under an environment at 23° C. and 50% RH with a tensile tester at an initial chuck-to-chuck distance set to 20 mm and a tensile rate of 300 mm/min in a longitudinal direction of the measurement sample so that a deformation amount thereof becomes 100%.

公开(公告)号：US20180194975A1

公开(公告)日：2018-07-12

申请号：US15862989

申请日：2018-01-05

Applicant: NITTO DENKO CORPORATION

Inventor： Yusuke YAMANARI ,  Makoto SAITO ,  Naoaki HIGUCHI ,  Kenta JOZUKA

IPC: C09J7/38 ,  C09J7/25 ,  C09J133/14

CPC classification number: C09J7/385 ,  C09J7/22 ,  C09J7/25 ,  C09J7/255 ,  C09J133/14 ,  C09J2201/622 ,  C09J2203/326 ,  C09J2423/006 ,  C09J2433/00 ,  C09J2467/006 ,  C09J2475/006

Abstract: Provided is a PSA sheet highly durable against repeated deformation and suited for use in a flexible device as well. The PSA sheet provided by this invention comprises a PSA layer. The PSA sheet shows a recovery rate at 100% elongation of 70% or higher. The PSA layer shows a displacement of 0.5 mm or greater according to the following holding power test: At 23° C., the PSA layer is applied over a 10 mm wide by 20 mm long bonding area to a Bakelite plate as an adherend; a 1 kg load is applied in the length direction; after one hour, the displacement from the initial position where first applied is determined.

公开(公告)号：US20210062049A1

公开(公告)日：2021-03-04

申请号：US16959313

申请日：2018-10-25

Applicant: NITTO DENKO CORPORATION

Inventor： Yusuke YAMANARI ,  Makoto SAITO ,  Naoaki HIGUCHI ,  Kenta JOZUKA

IPC: C09J7/38 ,  C09J7/25 ,  B32B7/023 ,  B32B7/06 ,  B32B7/12 ,  B32B27/40 ,  B32B27/10 ,  B32B27/08

Abstract: Provided is a pressure-sensitive adhesive tape that is hard to see through even in the case where a tensile stress is applied thereto. The pressure-sensitive adhesive tape of the present invention includes: a base material layer; and a pressure-sensitive adhesive layer arranged on at least one side of the base material laver, wherein the pressure-sensitive adhesive tape has a total light transmittance T1 of 20% or less under a state of being elongated by a degree of elongation of 0%, and wherein the pressure-sensitive adhesive tape has a total light transmittance T2 of 30% or less under a state of being elongated by a degree of elongation of 100%.

公开(公告)号：US20170121481A1

公开(公告)日：2017-05-04

申请号：US15128623

申请日：2015-03-12

Applicant: NITTO DENKO CORPORATION

Inventor： Itsuhiro HATANAKA ,  Tetsuya OTSUKA ,  Yusuke YAMANARI ,  Hiroyuki SUZUKI ,  Kazumichi KATO ,  Kohei DOI

IPC: C08J9/12 ,  G06F3/041 ,  B32B5/20 ,  B32B7/12 ,  C08J9/00 ,  C09J7/02

CPC classification number: C08J9/122 ,  B32B5/022 ,  B32B5/20 ,  B32B5/245 ,  B32B7/06 ,  B32B7/12 ,  B32B29/007 ,  B32B29/02 ,  B32B2250/02 ,  B32B2250/03 ,  B32B2262/101 ,  B32B2262/106 ,  B32B2264/10 ,  B32B2264/102 ,  B32B2264/104 ,  B32B2264/108 ,  B32B2266/0207 ,  B32B2266/0214 ,  B32B2266/0228 ,  B32B2266/0235 ,  B32B2266/0242 ,  B32B2266/025 ,  B32B2266/0257 ,  B32B2266/0264 ,  B32B2266/0278 ,  B32B2266/0292 ,  B32B2266/06 ,  B32B2266/08 ,  B32B2270/00 ,  B32B2274/00 ,  B32B2307/50 ,  B32B2307/56 ,  B32B2307/72 ,  B32B2307/732 ,  B32B2323/10 ,  B32B2457/208 ,  B32B2571/00 ,  C08J9/0061 ,  C08J9/0066 ,  C08J2201/03 ,  C08J2201/032 ,  C08J2203/06 ,  C08J2203/08 ,  C08J2205/044 ,  C08J2205/05 ,  C08J2323/02 ,  C08J2323/12 ,  C08J2333/04 ,  C08J2333/20 ,  C08J2367/00 ,  C08J2423/08 ,  C08J2433/08 ,  C09J7/26 ,  C09J2201/606 ,  C09J2201/622 ,  C09J2203/318 ,  C09J2423/046 ,  C09J2423/106 ,  C09J2433/006 ,  C09J2467/006 ,  G06F3/041 ,  G06F2203/04103

Abstract: Provided is a resin foam (13) that highly restrains the occurrence of display irregularities in a display unit when the resin foam is used in a touch-screen-equipped device (1), where the display irregularities may occur with user's touch operations. The resin foam (13) according to the present invention is obtained by expansion of a resin composition including a resin. The resin foam has a 25% compression load of 0.1 N/cm2 to 8.0 N/cm2 and is used in the touch-screen-equipped device (1). The resin is preferably at least one resin selected from the group consisting of polyolefin resins, polyester resins, and acrylic resins.

公开(公告)号：US20200224000A1

公开(公告)日：2020-07-16

申请号：US16638340

申请日：2018-08-07

Applicant: NITTO DENKO CORPORATION

Inventor： Yusuke YAMANARI ,  Makoto SAITO ,  Akira HIRAO ,  Kenji FURUTA

IPC: C08J9/00 ,  C09J7/38 ,  C09J7/26 ,  C08J9/12 ,  C08J9/10 ,  C09J11/04

Abstract: A resin sheet with a pressure-sensitive adhesive layer including the resin sheet. The resin sheet including a main surface A and a main surface B opposite to each other across a thickness “d”, where the resin sheet has a 50% compression load of 20 N/cm2 or less at 23±5° C. in a direction of the thickness “d”, which is measured in conformity with a method of measuring a compression hardness described in JIS K 6767:1999; where the resin sheet has a Poisson's ratio at 23° C. of 0.10 or less; and the resin sheet has a thickness recovery ratio of 40% or more when compressed by 20% in the direction of the thickness “d” at 23° C.

公开(公告)号：US20200165489A1

公开(公告)日：2020-05-28

申请号：US16633837

申请日：2018-07-24

Applicant: NITTO DENKO CORPORATION

Inventor： Yusuke YAMANARI ,  Makoto SAITO ,  Naoaki HIGUCHI ,  Kenta JOZUKA

IPC: C09J7/22 ,  C09J131/04 ,  C09J133/10 ,  C09J133/08 ,  C09J7/38

Abstract: Provided is a pressure-sensitive adhesive tape excellent in unevenness followability. The pressure-sensitive adhesive tape of the present invention includes: a base material layer; and a pressure-sensitive adhesive layer arranged on at least one side of the base material layer, wherein the pressure-sensitive adhesive tape has a dimensional change ratio at 23° C. of from 0.20 to 0.39.