公开(公告)号：US20240409780A1

公开(公告)日：2024-12-12

申请号：US18691482

申请日：2022-09-28

Applicant: NITTO DENKO CORPORATION

Inventor： Sho UCHIDA ,  Kohei TAKEDA ,  Shinsuke IKISHIMA

IPC: C09J7/35 ,  C09J7/10 ,  C09J11/08

Abstract: Provided are a pressure-sensitive adhesive composition that has a sufficient initial pressure-sensitive adhesive strength and can achieve both a resealing property and an easy unsealing property, and a pressure-sensitive adhesive tape using the pressure-sensitive adhesive composition. A hot-melt pressure-sensitive adhesive composition according to an embodiment of the present invention includes a styrene-based elastomer, an olefin-based elastomer, and a tackifier. The hot-melt pressure-sensitive adhesive composition includes 2 wt % to 80 wt % of the styrene-based elastomer, 2 wt % to 50 wt % of the olefin-based elastomer, and 2 wt % to 40 wt % of the tackifier.

公开(公告)号：US20220194048A1

公开(公告)日：2022-06-23

申请号：US17603158

申请日：2020-04-16

Applicant: NITTO DENKO CORPORATION

Inventor： Muneshige NAKAGAWA ,  Sho UCHIDA ,  Shinsuke IKISHIMA

IPC: B32B5/04 ,  B32B27/08 ,  B32B27/12 ,  B32B27/32 ,  B32B5/02 ,  B32B27/30 ,  B32B37/14

Abstract: Provided is an elastic laminate comprising a multilayer film comprising first elasticity skin layers arranged on both sides of a second elasticity core layer, said second elasticity core layer having higher elasticity than the sandwiching first elasticity skin layers, wherein the first elasticity skin layers comprise an olefin polymer, and the second elasticity core layer comprise an elastomer layer, and said multilayer film having arranged on both outer surfaces thereof non-woven layers bonded either (i) through hotmelt pressure-sensitive adhesive layers or (ii) by means of ultrasonic bonding or thermal bonding, wherein the elastic laminate is characterized by an elongation strength of less than 20 N/50 mm width when elongated by 50% with 300 mm/min elongation speed.

公开(公告)号：US20220194052A1

公开(公告)日：2022-06-23

申请号：US17603153

申请日：2020-04-16

Applicant: NITTO DENKO CORPORATION

Inventor： Muneshige NAKAGAWA ,  Sho UCHIDA ,  Shinsuke IKISHIMA

IPC: B32B7/022 ,  B32B27/32 ,  B32B27/30 ,  B32B27/08 ,  B32B27/18

Abstract: Provided is a multilayer co-extruded film comprising at least two different elasticity layers with at least one first elasticity layer and at least one second elasticity layer having higher elasticity than the at least one first elasticity layer, wherein the first elasticity layer comprises a combination of an olefin-based elastomer and a crystalline olefin polymer, and wherein the residual strain after 100% elongation during 10 min at 23° C. of the multilayer co-extruded film is less than 15%.

公开(公告)号：US20240384139A1

公开(公告)日：2024-11-21

申请号：US18691477

申请日：2022-09-28

Applicant: NITTO DENKO CORPORATION

Inventor： Sho UCHIDA ,  Kohei TAKEDA ,  Kentaro UCHIDA ,  Shinsuke IKISHIMA

IPC: C09J7/38 ,  C09J7/24 ,  C09J11/08

Abstract: Provided are a pressure-sensitive adhesive tape in which anchoring failure is suppressed and a method of producing the pressure-sensitive adhesive tape. The pressure-sensitive adhesive tape includes a base material including an olefin-based resin, a first pressure-sensitive adhesive layer including an olefin-based resin, and a second pressure-sensitive adhesive layer including a styrene-based elastomer in the stated order. The method of producing a pressure-sensitive adhesive tape is a method of producing a pressure-sensitive adhesive tape including a base material including an olefin-based resin, a first pressure-sensitive adhesive layer including an olefin-based resin, and a second pressure-sensitive adhesive layer including a styrene-based elastomer in the stated order, the method including: applying a pressure-sensitive adhesive composition for forming the first pressure-sensitive adhesive layer to the base material by hot-melt coating; and applying a pressure-sensitive adhesive composition for forming the second pressure-sensitive adhesive layer to the first pressure-sensitive adhesive layer by the hot-melt coating.

公开(公告)号：US20220212451A1

公开(公告)日：2022-07-07

申请号：US17603800

申请日：2020-04-24

Applicant: NITTO DENKO CORPORATION

Inventor： Sho UCHIDA ,  Muneshige NAKAGAWA ,  Shinsuke IKISHIMA

IPC: B32B25/10 ,  D04H3/11 ,  B29C65/08 ,  B32B37/12 ,  B29C65/48

Abstract: A problem to be solved by the invention is to provide a stretchable laminate achieving both of excellent elongation and an excellent breaking strength, and a method of manufacturing the laminate. A stretchable laminate of the present invention includes non-woven fabric layers and an elastomer layer. The non-woven fabric layers are each a long-fiber hydroentangled non-woven fabric. The stretchable laminate achieving both of excellent elongation and an excellent breaking strength is obtained by using the long-fiber hydroentangled non-woven fabric, which is a non-woven fabric formed through the fixation of fibers formed by a spun-laid method by a hydroentangling method.