US 12,359,098 B2
Composite structure and double-sided adhesive tape
Tomohiro Hida, Moriyama (JP)
Assigned to SEKISUI CHEMICAL CO., LTD., Osaka (JP)
Appl. No. 17/439,983
Filed by SEKISUI CHEMICAL CO., LTD., Osaka (JP)
PCT Filed Mar. 18, 2020, PCT No. PCT/JP2020/011887
§ 371(c)(1), (2) Date Sep. 16, 2021,
PCT Pub. No. WO2020/189700, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 2019-050410 (JP), filed on Mar. 18, 2019.
Prior Publication US 2022/0169896 A1, Jun. 2, 2022
Int. Cl. B32B 3/10 (2006.01); B32B 7/12 (2006.01); B32B 27/12 (2006.01); B32B 27/28 (2006.01); C09J 7/38 (2018.01); C09J 133/08 (2006.01)
CPC C09J 7/385 (2018.01) [B32B 7/12 (2013.01); B32B 27/12 (2013.01); B32B 27/281 (2013.01); C09J 133/08 (2013.01); B32B 2250/02 (2013.01); B32B 2262/0276 (2013.01); B32B 2307/542 (2013.01); B32B 2307/732 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A composite structure comprising a synthetic resin material, a fabric, and a double-sided adhesive tape that is disposed between the synthetic resin material and the fabric and bonds them together, the composite structure having a shear strength at 140° C. of 15 mN/mm2 or more,
wherein the synthetic resin material is a polyimide-based resin,
the fabric is a polyester fiber fabric,
the double-sided adhesive tape comprises a pressure-sensitive adhesive layer made of an acrylic pressure-sensitive adhesive,
the acrylic pressure-sensitive adhesive comprises an acrylic-based polymer (A), and
the acrylic-based polymer (A) is a copolymer of monomer components comprising 100 parts by mass of an alkyl (meth)acrylate monomer (A1) and 4 to 18 parts by mass of a carboxyl group-containing monomer (X1).