US 12,134,238 B2
Fiber-reinforced composite layup
Larry S. Hebert, Hudson, WI (US)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 17/414,248
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Dec. 16, 2019, PCT No. PCT/IB2019/060860
§ 371(c)(1), (2) Date Jun. 15, 2021,
PCT Pub. No. WO2020/128793, PCT Pub. Date Jun. 25, 2020.
Claims priority of provisional application 62/784,043, filed on Dec. 21, 2018.
Prior Publication US 2022/0055324 A1, Feb. 24, 2022
Int. Cl. B29C 70/88 (2006.01); B29C 70/38 (2006.01); B32B 15/14 (2006.01); B29K 105/08 (2006.01); B29L 31/30 (2006.01); B64D 45/02 (2006.01)
CPC B29C 70/885 (2013.01) [B29C 70/382 (2013.01); B32B 15/14 (2013.01); B29K 2105/0872 (2013.01); B29K 2995/0005 (2013.01); B29L 2031/3076 (2013.01); B32B 2260/023 (2013.01); B32B 2260/046 (2013.01); B32B 2307/202 (2013.01); B32B 2605/18 (2013.01); B64D 45/02 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A structural fiber-reinforced composite comprising:
a plurality of prepreg layers, each comprising a polymeric resin and a plurality of fibers disposed therein; and
a first electrically-conductive layer in contact with the plurality of prepreg layers, the first electrically-conductive layer having a ribbon shape aligned in a first direction,
a second electrically-conductive layer in contact with the plurality of prepreg layers, the second electrically-conductive layer having a ribbon shape aligned in a second direction, and
wherein at least one of the plurality of prepreg layers is an insulating layer,
wherein the first direction is different from the second direction such that the first and second electrically-conductive layers overlap with each other at intersections when viewed from a direction perpendicular to a major surface of the composite, and
wherein the insulating layer prevents the first electrically-conductive layer from being in electrical contact with the second electrically-conductive layer at the intersections.