公开(公告)号：US10676649B2

公开(公告)日：2020-06-09

申请号：US15762907

申请日：2016-09-27

Applicant: LINTEC CORPORATION

Inventor： Kazue Uemura ,  Kiichiro Kato ,  Yumiko Amino ,  Koji Tsuchibuchi ,  Takamasa Kase ,  Yusuke Matsuoka

IPC: C09J7/38 ,  C09J11/02 ,  C09J7/20 ,  B32B7/06 ,  B32B27/00 ,  C09J201/00 ,  C09J7/25 ,  B32B7/12 ,  B32B27/08 ,  B32B27/36 ,  C09J11/04

Abstract: A pressure sensitive adhesive sheet including, on a substrate or a release material, a resin layer, at least a surface (α) of the resin layer on the opposite to the side on which the substrate or release material is provided having pressure sensitive adhesiveness, wherein a concave portion and a flat face exist on the surface (α) of the resin layer, and a width of the concave portion observed from the side of the surface (α) is non-uniform, and in a region (D) of 8 mm in length×10 mm in width as freely-selected on the surface (α), a concave portion having an area of 70 to 99.99% relative to 100% of a total area of the concave portions existing in the region (D) exists.

公开(公告)号：US10682657B2

公开(公告)日：2020-06-16

申请号：US15763185

申请日：2016-09-27

Applicant: LINTEC CORPORATION

Inventor： Koji Tsuchibuchi ,  Kazue Uemura ,  Kiichiro Kato

IPC: B32B27/00 ,  B32B3/30 ,  C09J133/08 ,  C09J7/38 ,  C09J7/20 ,  C08K3/36 ,  C08K3/013 ,  B05B5/10 ,  C09J11/04 ,  C09J201/00 ,  C09J175/04 ,  C09J133/02 ,  C09J5/00 ,  B05D7/24 ,  C08K3/00 ,  C08K3/34 ,  C08K7/00

Abstract: Provided are a pressure sensitive adhesive sheet including, on a substrate, a resin layer containing a resin which is a resin layer containing a resin part (X) containing a resin as a main component and a particle part (Y) consisting of fine particles, at least a surface (α) of the resin layer on the side opposite to the side thereof on which the substrate is provided, having pressure sensitive adhesiveness, wherein a bending stress coefficient k in the MD direction of the substrate is 20 N·mm or less, a 10% elongation strength in the MD direction thereof is 260 N/15 mm or less, and concave portions satisfying specified requirements are included on the surface (α) of the resin layer; and a method for producing the pressure sensitive adhesive sheet.

公开(公告)号：US10221339B2

公开(公告)日：2019-03-05

申请号：US15300141

申请日：2015-04-02

Applicant: LINTEC CORPORATION

Inventor： Satoshi Kawada ,  Kiichiro Kato ,  Kazue Uemura ,  Yumiko Amino ,  Shigeru Saito ,  Koji Tsuchibuchi ,  Takamasa Kase

IPC: C09J7/02 ,  C08K3/34 ,  C09J133/08 ,  C09J5/00 ,  C09J7/38 ,  C09J201/00 ,  B05D1/36 ,  B05D3/10 ,  B05D5/00 ,  C09J11/04 ,  C09J7/22 ,  C09J7/20 ,  C09J7/25 ,  C09J7/10 ,  C09J121/00 ,  C09J167/00 ,  C09J175/04 ,  C08K3/013 ,  C08K3/36 ,  C08K7/00

Abstract: A pressure sensitive adhesive sheet including, on a substrate or a release material, a resin layer including a resin part (X) containing a resin as a main component, and a particle part (Y) consisting of fine particles and having a surface (α) having pressure sensitive adhesiveness and one or more concave portions. When the surface (α) of the resin layer is adhered to a smooth surface of a light transmissive adherend to give a laminate, the areal ratio (S1) of the attached area adhered to the smooth surface to the surface (α) is 10 to 95% at 23° C. and 50% RH, and the area increase rate {[(S2−S1)/S1]×100} is −10 to 20% after heating of the smooth surface by statically leaving the laminate at 80° C. for 30 minutes.