公开(公告)号：US20170174947A1

公开(公告)日：2017-06-22

申请号：US15300365

申请日：2015-04-02

Applicant: LINTEC CORPORATION

Inventor： Kiichiro KATO ,  Kazue UEMURA ,  Yumiko AMINO ,  Shigeru SAITO ,  Koji TSUCHIBUCHI ,  Yoshitomo ONO

IPC: C09J7/02 ,  C09J11/04

CPC classification number: C09J7/383 ,  B05D1/36 ,  B05D3/108 ,  B05D5/00 ,  C08K3/013 ,  C08K3/34 ,  C08K3/346 ,  C08K3/36 ,  C08K7/00 ,  C08K2201/003 ,  C09J5/00 ,  C09J7/10 ,  C09J7/20 ,  C09J7/203 ,  C09J7/22 ,  C09J7/255 ,  C09J7/38 ,  C09J7/385 ,  C09J11/04 ,  C09J121/00 ,  C09J133/08 ,  C09J167/00 ,  C09J175/04 ,  C09J201/00 ,  C09J2201/16 ,  C09J2201/28 ,  C09J2201/36 ,  C09J2201/606 ,  C09J2205/10 ,  C09J2205/102 ,  C09J2205/114 ,  C09J2400/163 ,  C09J2421/00 ,  C09J2433/00 ,  C09J2467/006 ,  C09J2475/00 ,  C09J2483/005 ,  C08K3/00

Abstract: Provided is a pressure sensitive adhesive sheet containing, on a substrate or a release material, a resin layer formed of a multilayer structure of three or more layers including a fine particle-containing layer that contains fine particles in an amount of 15% by mass or more, at least a surface (α) of the resin layer being opposite to the side thereof on which the substrate or the release material is provided having pressure sensitive adhesiveness, wherein the fine particle-containing layer is formed not as the outermost layer of the resin layer, and one or more concave portions exist on the surface (α) and the shapes of the one or more concave portions have irregular shapes. When attached to an adherend, the pressure sensitive adhesive sheet can exhibit excellent air escape property of readily removing air accumulation which may be formed, good blister resistance and good pressure sensitive adhesion characteristics.