US 12,496,747 B2
Wedge filler preform
Roland Bernicke, Hilden (DE); Markus Schneider, Düsseldorf (DE); Marco Pöhler, Aachen (DE); and Julian Lowe, Wuppertal (DE)
Assigned to TEIJIN CARBON EUROPE GMBH, Wuppertal (DE)
Appl. No. 17/603,360
Filed by TEIJIN CARBON EUROPE GMBH, Wuppertal (DE)
PCT Filed Mar. 23, 2020, PCT No. PCT/EP2020/057965
§ 371(c)(1), (2) Date Oct. 13, 2021,
PCT Pub. No. WO2020/212087, PCT Pub. Date Oct. 22, 2020.
Claims priority of application No. 19170061 (EP), filed on Apr. 18, 2019.
Prior Publication US 2022/0184852 A1, Jun. 16, 2022
Int. Cl. B29B 11/16 (2006.01); B29C 33/26 (2006.01); B29C 43/34 (2006.01); B29C 43/52 (2006.01); B29D 99/00 (2010.01); B29L 31/30 (2006.01)
CPC B29B 11/16 (2013.01) [B29C 33/26 (2013.01); B29C 43/34 (2013.01); B29C 43/52 (2013.01); B29D 99/0005 (2021.05); B29C 2043/3433 (2013.01); B29C 2043/3488 (2013.01); B29L 2031/3076 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A wedge filler preform comprising reinforcing fiber bundles consisting of reinforcing fiber filaments,
wherein the filaments are directed parallel to each other within the reinforcing fiber bundle, wherein the reinforcing fiber bundle contains a first resin composition in a concentration in the range from 1 to 10 wt. % relative to the fiber weight,
wherein the reinforcing fiber bundles have a length in the range from 2 to 20 mm and at least 60% of the reinforcing fiber bundles are reversibly fixed in a curved form within the wedge filler preform,
wherein said fiber bundles further comprise curved flanks that create an opening angle of less than 120° and the opening angle of the curved reinforcing fiber bundles relates with an
opening angle of the wedge filler preform,
wherein the curved reinforcing fiber bundles are oriented isotropically in the direction parallel to the opening angle of the wedge filler preform, and
wherein the fibers are oriented anisotropically within the individual reinforcing fiber bundles.