公开(公告)号：US20170218232A1

公开(公告)日：2017-08-03

申请号：US15417349

申请日：2017-01-27

Applicant: NITTO DENKO CORPORATION

Inventor： Masahito NIWA ,  Masataka NISHIWAKI ,  Noboru YOSHIDA ,  Naoaki HIGUCHI ,  Yutaka TOSAKI ,  Huairui ZHU ,  Junyi DING

IPC: C09J7/02 ,  B32B7/12 ,  B32B27/06 ,  B32B27/08 ,  B32B27/36 ,  B32B27/32 ,  C09J7/00 ,  B32B7/06

CPC classification number: B32B7/06 ,  B32B3/266 ,  B32B5/022 ,  B32B5/024 ,  B32B5/18 ,  B32B7/12 ,  B32B15/085 ,  B32B15/20 ,  B32B27/065 ,  B32B27/08 ,  B32B27/10 ,  B32B27/12 ,  B32B27/304 ,  B32B27/32 ,  B32B27/322 ,  B32B27/36 ,  B32B29/002 ,  B32B2250/02 ,  B32B2255/102 ,  B32B2255/26 ,  B32B2262/0276 ,  B32B2262/04 ,  B32B2262/062 ,  B32B2262/065 ,  B32B2262/14 ,  B32B2266/0207 ,  B32B2266/0228 ,  B32B2266/0235 ,  B32B2266/025 ,  B32B2266/0257 ,  B32B2266/0264 ,  B32B2266/0278 ,  B32B2307/50 ,  B32B2307/558 ,  B32B2307/56 ,  B32B2307/7265 ,  B32B2405/00 ,  B32B2457/00 ,  C09J7/00 ,  C09J7/10 ,  C09J7/22 ,  C09J7/38 ,  C09J133/066 ,  C09J2201/606 ,  C09J2203/326 ,  C09J2400/243 ,  C09J2423/046 ,  C09J2433/00

Abstract: Provided is a double-faced PSA sheet having excellent detergent resistance. The PSA sheet according to this invention comprises a PSA layer and is adhesive on both faces. The PSA sheet shows a push-peel strength of 30 N/cm2 or greater after a detergent immersion test involving immersion in a standard detergent at 40° C. for 24 hours. It also has an adhesive strength retention rate of 50% or higher, determined as the ratio of push-peel strength P2 after the detergent immersion test to push-peel strength P1 before the detergent immersion test.

公开(公告)号：US20190292414A1

公开(公告)日：2019-09-26

申请号：US16316769

申请日：2017-06-09

Applicant: NITTO DENKO CORPORATION

Inventor： Masatsugu HIGASHI ,  Yutaka TOSAKI

IPC: C09J7/38 ,  C08F220/18 ,  C09J7/22 ,  C09J7/21

Abstract: A resin composition characterized by including a (meth)acrylic polymer having a Tg of −40° C. or lower obtained by polymerizing a monomer component including an alkyl (meth)acrylate (a1), the Tg of a homopolymer of which is −50° C. or lower, that has a C8-18 branched alkyl group at the end of the ester group and a (meth)acrylate (a2), the Tg of a homopolymer of which is −40° C. or lower, that has an ether bond within the molecular skeleton. The resin composition can achieve both high adhesive strength and high holding power to an adherend having a rough surface.

公开(公告)号：US20210179893A1

公开(公告)日：2021-06-17

申请号：US16093221

申请日：2017-03-07

Applicant: NITTO DENKO CORPORATION

Inventor： Yoshiko OGINO ,  Yutaka TOSAKI ,  Michiro KAWANISHI ,  Kiichiro MATSUSHITA ,  Akiko NONAKA ,  Akihisa MURATA

IPC: C09J7/10 ,  B33Y30/00 ,  B29C64/245 ,  C09J7/25

Abstract: A pressure-sensitive adhesive sheet including a pressure-sensitive adhesive layer having an adhesive strength reducible by an adhesive strength-reducing action. For example, the pressure-sensitive adhesive layer is a thermally releasable pressure-sensitive adhesive layer (11), and the adhesive strength-reducing action is heating of the pressure-sensitive adhesive layer (11). This pressure-sensitive adhesive sheet for build stage use is suitable for allowing an object to be formed over a build stage of an additive manufacturing apparatus to be attached to the build stage during building up, and to be readily detached from the build stage after building up. An additive manufacturing apparatus can employ the pressure-sensitive adhesive sheet for build stage use and includes a build stage, and adhesive strength-reducing means for performing an adhesive strength-reducing action to a pressure-sensitive adhesive layer of the pressure-sensitive adhesive sheet for build stage use affixed to the stage.

公开(公告)号：US20190092978A1

公开(公告)日：2019-03-28

申请号：US16082602

申请日：2017-02-28

Applicant: NITTO DENKO CORPORATION

Inventor： Yoshiko OGINO ,  Yutaka TOSAKI ,  Michiro KAWANISHI

IPC: C09J7/38 ,  C09J7/21 ,  C09J7/25 ,  C09J7/24

Abstract: A pressure-sensitive adhesive sheet (X1), which is a pressure-sensitive adhesive sheet for build stage use according to the present invention, has a multilayer structure typically including a substrate (11) and a pressure-sensitive adhesive layer (12). The pressure-sensitive adhesive sheet (X1) has a puncture strength of 3.3 to 12 N, where the puncture strength is determined as a maximum load during a process in which a probe having a hemispherical head with the radius of curvature of 0.5 mm pierces the pressure-sensitive adhesive sheet at a travel speed of 0.2 mm/s. The pressure-sensitive adhesive sheet for build stage use is suitable for detachment of an object, which is formed on a build stage typically of an additive manufacturing apparatus, from the build stage while less causing the significant damage to the object.

公开(公告)号：US20170283661A1

公开(公告)日：2017-10-05

申请号：US15472413

申请日：2017-03-29

Applicant: NITTO DENKO CORPORATION ,  NITTO BELGIUM NV

Inventor： Kousuke YONEZAKI ,  Yutaka TOSAKI ,  Minoru HANAOKA ,  Bart FORIER ,  Greet BOSSAERT ,  Donald PINXTEN ,  Michael PELLENS

IPC: C09J7/02 ,  C08F220/18 ,  C09J133/08

CPC classification number: C09J133/08 ,  C08F220/18 ,  C08F2220/1808 ,  C09J7/22 ,  C09J7/243 ,  C09J7/38 ,  C09J7/385 ,  C09J2433/00

Abstract: Provided is a surface protection sheet that is less susceptible to breaking and tearing caused by adherend processing and can be easily removed from the adherend. The surface protection sheet comprises a substrate and a PSA layer placed on one face of the substrate. The base polymer of the PSA layer has a glass transition temperature of −50° C. or higher. The surface protection sheet has at least 200% elongation at break in both the machine direction and the transverse direction.