US 12,269,974 B2
Structural adhesive tape and method of manufacturing the same
Sung Chul Shin, Incheon (KR); and Jong Sub Lim, Chungcheongbuk-do (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Shinsung Industrial Co., Ltd., Chungcheongbuk-do (KR)
Filed by Hyundai Motor Company, Seoul (KR); Kia Motors Corporation, Seoul (KR); and Shinsung Industrial Co., Ltd., Chungcheongbuk-do (KR)
Filed on Dec. 2, 2020, as Appl. No. 17/109,684.
Claims priority of application No. 10-2020-0094858 (KR), filed on Jul. 30, 2020.
Prior Publication US 2022/0033686 A1, Feb. 3, 2022
Int. Cl. C09J 7/20 (2018.01); B32B 15/02 (2006.01); B32B 37/00 (2006.01); B32B 38/00 (2006.01); C08K 3/013 (2018.01); C08K 3/04 (2006.01); C08K 3/36 (2006.01); C08K 5/00 (2006.01); C08K 5/21 (2006.01); C08K 5/315 (2006.01); C08L 75/04 (2006.01); C09J 7/21 (2018.01); C09J 163/00 (2006.01); C08K 3/22 (2006.01); C08K 3/26 (2006.01); C08K 3/30 (2006.01); C08K 3/32 (2006.01)
CPC C09J 7/20 (2018.01) [B32B 15/02 (2013.01); B32B 37/00 (2013.01); B32B 38/0004 (2013.01); C08K 3/013 (2018.01); C08K 3/04 (2013.01); C08K 3/36 (2013.01); C08K 5/0016 (2013.01); C08K 5/0025 (2013.01); C08K 5/21 (2013.01); C08K 5/3155 (2013.01); C08L 75/04 (2013.01); C09J 7/21 (2018.01); C09J 163/00 (2013.01); C08K 2003/2206 (2013.01); C08K 2003/265 (2013.01); C08K 2003/3045 (2013.01); C08K 2003/321 (2013.01); C09J 2301/122 (2020.08); C09J 2301/124 (2020.08); C09J 2301/312 (2020.08); C09J 2301/408 (2020.08); C09J 2400/143 (2013.01); C09J 2400/263 (2013.01); C09J 2421/00 (2013.01); C09J 2463/00 (2013.01); C09J 2467/006 (2013.01); C09J 2475/00 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A structural adhesive tape, comprising:
a mesh layer; and
an adhesive layer located on one side or both sides of the mesh layer,
wherein the adhesive layer comprises an amount of 35 to 45 wt % of an epoxy resin, an amount of 20 to 25 wt % of an inorganic filler, an amount of 5 to 10 wt % of a moisture scavenger, an amount of 2 to 5 wt % of a flame retardant plasticizer, an amount of 10 to 20 wt % of rubber particles, an amount of 2.5 to 4 wt % of a hardener, and an amount of 10 to 15 wt % of a urethane resin based on the total weight of the adhesive layer,
the epoxy resin comprising an amount of 25 to 30 wt % in a solid phase and an amount of 10 to 15 wt % in a liquid phase, based on the total weight of the adhesive layer,
wherein the adhesive layer further comprises an amount of 0.05 to 0.1 wt % of a pigment, an amount of 1 to 2 wt % of a hydrophobic silica, and an amount of 0.5 to 1 wt % of a urea, based on the total weight of the adhesive layer, and
wherein the mesh layer comprises a polyester fiber,
wherein the mesh layer has a size ranging from 40 mesh to 60 mesh, fineness ranging from 75 D to 200 D, and a density ranging from 20 T/inch to 30 T/inch,
wherein the inorganic filler comprises one or more selected from the group consisting of calcium carbonate and barium sulfate,
wherein the moisture scavenger comprises calcium oxide,
wherein the flame retardant plasticizer comprises tricresyl phosphate,
wherein the structural adhesive tape has shear strength ranges from 29 MPa to 35 MPa, delamination strength ranges from 290 N/25 mm to 320 N/25 mm.