公开(公告)号：US20220280986A1

公开(公告)日：2022-09-08

申请号：US17633368

申请日：2020-03-19

Applicant: NITTO DENKO CORPORATION

Inventor： Mizuho NAGATA ,  Yu TACHIKAWA | ,  Keisuke HIRANO ,  Kiichiro MATSUSHITA

IPC: B08B7/00 ,  C09J7/38 ,  C09J11/06

Abstract: A method for releasing an adherend of the present invention includes a first step and a second step. In the first step, a bonded product (100) including a pressure-sensitive adhesive layer (10), and an adherend (20) bonded thereto is prepared. The pressure-sensitive adhesive layer (10) includes a pressure-sensitive adhesive component and a gas generating agent. In the second step, a laser light (L) is irradiated to the pressure-sensitive adhesive layer (10)-side of the bonded product (100) to heat a part of the pressure-sensitive adhesive layer (10). A pressure-sensitive adhesive composition of the present invention is a composition used for forming the pressure-sensitive adhesive layer (10) in the method.

公开(公告)号：US20170335142A1

公开(公告)日：2017-11-23

申请号：US15529560

申请日：2015-11-27

Applicant: NITTO DENKO CORPORATION

Inventor： Shuuhei YAMAMOTO ,  Kiichiro MATSUSHITA

IPC: C09J7/02 ,  B32B7/12 ,  B32B27/40 ,  B32B5/18 ,  B32B7/06 ,  B32B27/36 ,  C09J133/14

Abstract: Provided is a PSA sheet capable of bringing about good air release properties in mobile electronic applications. The present invention provides a PSA sheet for mobile electronics. The PSA sheet comprises a substrate film and a PSA layer provided to at least one face of the substrate film. The PSA layer has a thickness of 20 μm or less. The PSA sheet further comprises a coating layer that partially covers the PSA layer surface. The coating layer has a thickness less than 3 μm.

公开(公告)号：US20170260425A1

公开(公告)日：2017-09-14

申请号：US15529624

申请日：2015-11-27

Applicant: NITTO DENKO CORPORATION

Inventor： Shuuhei YAMAMOTO ,  Kiichiro MATSUSHITA

IPC: C09J7/02

CPC classification number: B32B27/40 ,  B32B3/00 ,  B32B5/18 ,  B32B7/06 ,  B32B7/12 ,  B32B7/14 ,  B32B15/08 ,  B32B15/09 ,  B32B15/12 ,  B32B25/06 ,  B32B25/08 ,  B32B27/065 ,  B32B27/08 ,  B32B27/10 ,  B32B27/12 ,  B32B27/281 ,  B32B27/304 ,  B32B27/306 ,  B32B27/32 ,  B32B27/34 ,  B32B27/36 ,  B32B29/005 ,  B32B29/007 ,  B32B2250/02 ,  B32B2250/03 ,  B32B2250/24 ,  B32B2250/26 ,  B32B2255/02 ,  B32B2255/06 ,  B32B2255/10 ,  B32B2255/102 ,  B32B2255/12 ,  B32B2255/26 ,  B32B2255/28 ,  B32B2266/0207 ,  B32B2266/0228 ,  B32B2266/0235 ,  B32B2266/0242 ,  B32B2266/025 ,  B32B2266/0257 ,  B32B2266/0264 ,  B32B2266/0278 ,  B32B2307/412 ,  B32B2307/414 ,  B32B2307/50 ,  B32B2307/538 ,  B32B2307/72 ,  B32B2307/748 ,  B32B2309/105 ,  B32B2405/00 ,  C09J7/22 ,  C09J7/38 ,  C09J133/08 ,  C09J133/14 ,  C09J2201/122 ,  C09J2201/128 ,  C09J2201/16 ,  C09J2201/28 ,  C09J2201/606 ,  C09J2203/318 ,  C09J2203/326 ,  C09J2205/114 ,  C09J2400/243 ,  C09J2423/006 ,  C09J2433/00 ,  C09J2433/006 ,  C09J2467/006 ,  C09J2475/005 ,  C09J2493/00 ,  C08F2220/1825 ,  C08F2220/1858 ,  C08F220/06 ,  C08F220/20

Abstract: Provided is a PSA sheet with which good air release properties can be obtained while whose quality can be further enhanced. This invention provides a PSA sheet comprising a substrate film and a PSA layer provided to at least one face of the substrate film. The PSA sheet further comprises a coating layer partially covering the PSA layer surface. The PSA sheet's adhesive is formed of the PSA layer and the coating layer. The coating layer has a linearly extending part running from one edge to another edge of the adhesive face. The linearly extending part has a first face forming the PSA sheet's adhesive face and a second face located on the PSA layer side relative to the first face. The second face of the linearly extending part forms an overall gently curved line in a cross section perpendicularly intersecting the length direction of the linearly extending part.

公开(公告)号：US20220325143A1

公开(公告)日：2022-10-13

申请号：US17625464

申请日：2020-03-19

Applicant: NITTO DENKO CORPORATION

Inventor： Mizuho NAGATA ,  Yu TACHIKAWA ,  Keisuke HIRANO ,  Kiichiro MATSUSHITA

IPC: C09J7/38 ,  C09J133/08 ,  C09J7/20

Abstract: A method for releasing an adherend of the present invention includes a first step and a second step. In the first step, a bonded product (100) including a pressure-sensitive adhesive layer (10), and an adherend (20) bonded thereto is prepared. The pressure-sensitive adhesive layer (10) includes a pressure-sensitive adhesive component and a heat-expandable agent. In the second step, an energy ray (R) is irradiated from the pressure-sensitive adhesive layer (10)-side of the bonded product (100) toward the adherend (20). A transmittance of the energy ray (R) in the pressure-sensitive adhesive layer (10) is 60% or more. The pressure-sensitive adhesive composition of the present invention is a composition used for forming the pressure-sensitive adhesive layer (10) in the method.

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：US20170226384A1

公开(公告)日：2017-08-10

申请号：US15501486

申请日：2016-02-23

Applicant: NITTO DENKO CORPORATION

Inventor： Takatoshi KAWAMOTO ,  Izumi SHIMIZU ,  Ikkou HANAKI ,  Kiichiro MATSUSHITA

IPC: C09J7/02

CPC classification number: C09J7/22 ,  C09J7/38 ,  C09J133/066 ,  C09J2201/134 ,  C09J2201/606 ,  C09J2201/622 ,  C09J2423/046 ,  C09J2433/00

Abstract: A double-sided pressure-sensitive adhesive tape includes a support base member having a hand tearable property, a first acrylic adhesive layer on one surface of the support base member, and a second acrylic adhesive layer on another surface of the support base member. The first acrylic adhesive layer has a thickness t1 that is 5 μm or more and 50 μm or less, the second acrylic adhesive layer has a thickness t2 that is greater than the thickness t1 of the first acrylic adhesive layer and is 20 μm or more, the second acrylic adhesive layer has gel fraction X2 that is 20 mass % or more and 75 mass % or less, and the second acrylic adhesive layer has adhesive force greater than adhesive force of the first acrylic adhesive layer.

公开(公告)号：US20220017789A1

公开(公告)日：2022-01-20

申请号：US17299374

申请日：2019-11-12

Applicant: NITTO DENKO CORPORATION

Inventor： Mizuho NAGATA ,  Yu TACHIKAWA ,  Keisuke HIRANO ,  Kiichiro MATSUSHITA

IPC: C09J7/38 ,  C09J11/06 ,  C08K5/23

Abstract: A pressure-sensitive adhesive composition includes a pressure-sensitive adhesive component and a gas generating particle dispersed in the pressure-sensitive adhesive component. A tensile elastic modulus at 25° C. of the pressure-sensitive adhesive composition is 5 MPa or less. A gas generation amount at which the gas generating particle is generated in the pressure-sensitive adhesive composition is 5 mL/g or more in terms of decane at 0° C. and 1013 hPa in a solid content of the pressure-sensitive adhesive composition.

公开(公告)号：US20200009789A1

公开(公告)日：2020-01-09

申请号：US16494542

申请日：2018-02-27

Applicant: NITTO DENKO CORPORATION

Inventor： Yoshiko OGINO ,  Kiichiro MATSUSHITA ,  Akihisa MURATA ,  Tsunaki KITAHARA ,  Akiko NONAKA

IPC: B29C64/245 ,  B32B27/10 ,  B32B33/00

Abstract: Provided is a build mat to which a 3D print sticks well and from which the 3D print is easily separated. The build mat provided by this invention comprises a substrate and a surface layer provided to the first face of the substrate. The build mat has a peel strength of 1.5 N/18 mm or greater and 10 N/18 mm or less, determined by peeling the mat from polylactic acid (PLA) placed on the surface layer; and it is constituted so that the surface layer remains on the PLA in the peel strength measurement.

公开(公告)号：US20170267897A1

公开(公告)日：2017-09-21

申请号：US15529634

申请日：2015-11-27

Applicant: Nitto Denko Corporation

Inventor： Shuuhei YAMAMOTO ,  Kiichiro MATSUSHITA

IPC: C09J7/02 ,  B32B7/14 ,  B32B7/06

CPC classification number: B32B27/40 ,  B32B3/00 ,  B32B5/18 ,  B32B7/06 ,  B32B7/12 ,  B32B7/14 ,  B32B15/08 ,  B32B15/09 ,  B32B15/12 ,  B32B25/06 ,  B32B25/08 ,  B32B27/065 ,  B32B27/08 ,  B32B27/10 ,  B32B27/12 ,  B32B27/281 ,  B32B27/304 ,  B32B27/306 ,  B32B27/32 ,  B32B27/34 ,  B32B27/36 ,  B32B29/005 ,  B32B29/007 ,  B32B2250/02 ,  B32B2250/03 ,  B32B2250/24 ,  B32B2250/26 ,  B32B2255/02 ,  B32B2255/06 ,  B32B2255/10 ,  B32B2255/102 ,  B32B2255/12 ,  B32B2255/26 ,  B32B2255/28 ,  B32B2266/0207 ,  B32B2266/0228 ,  B32B2266/0235 ,  B32B2266/0242 ,  B32B2266/025 ,  B32B2266/0257 ,  B32B2266/0264 ,  B32B2266/0278 ,  B32B2307/412 ,  B32B2307/414 ,  B32B2307/50 ,  B32B2307/538 ,  B32B2307/72 ,  B32B2307/748 ,  B32B2309/105 ,  B32B2405/00 ,  C09J7/22 ,  C09J7/38 ,  C09J133/08 ,  C09J133/14 ,  C09J2201/122 ,  C09J2201/128 ,  C09J2201/16 ,  C09J2201/28 ,  C09J2201/606 ,  C09J2203/318 ,  C09J2203/326 ,  C09J2205/114 ,  C09J2400/243 ,  C09J2423/006 ,  C09J2433/00 ,  C09J2433/006 ,  C09J2467/006 ,  C09J2475/005 ,  C09J2493/00 ,  C08F2220/1825 ,  C08F2220/1858 ,  C08F220/06 ,  C08F220/20

Abstract: Provided is a PSA sheet capable of showing high long-term adhesive strength and good air release properties between the PSA sheet and an adherend. This invention provides a PSA sheet comprising a substrate film and a PSA layer provided to at least one face of the substrate film. The PSA sheet comprises a coating layer partially covering the PSA layer surface, whereby the PSA layer surface has a coating layer-bearing area and a coating layer-free area. The coating layer-free area occupies 70% or more of the PSA layer surface. In a top view of the PSA layer surface, the coating layer-bearing area has a linearly extending part running from one edge to another edge of the PSA layer. The linearly extending part has a width in a range of 0.1 mm to 2 mm.

公开(公告)号：US20220025223A1

公开(公告)日：2022-01-27

申请号：US17299836

申请日：2019-12-09

Applicant: NITTO DENKO CORPORATION

Inventor： Mizuho NAGATA ,  Yu TACHIKAWA ,  Keisuke HIRANO ,  Kiichiro MATSUSHITA

IPC: C09J7/38 ,  C09J11/06 ,  C08K5/23

Abstract: A pressure-sensitive adhesive composition contains an adhesive component and gas-generative particles dispersed in the adhesive component. When the gas-generative particles are subjected to particle size distribution measurement, in the particle size distribution of the gas-generative particles, a cumulative particle size (D90) where a cumulative value from the smallest particle size is 90% based on volume is 10.0 μm or less.