US 12,480,238 B2
Unidirectional laid nonwoven and use thereof
Dietmar Möcke, Münster (DE); Steven Bakker, Münster (DE); and Christoph Engeler, Telgte (DE)
Assigned to SAERTEX GMBH & CO. KG, Saerbeck (DE)
Appl. No. 16/764,927
Filed by SAERTEX GMBH & CO. KG, Saerbeck (DE)
PCT Filed Nov. 23, 2018, PCT No. PCT/EP2018/082459
§ 371(c)(1), (2) Date May 18, 2020,
PCT Pub. No. WO2019/101975, PCT Pub. Date May 31, 2019.
Claims priority of application No. 102017127868.0 (DE), filed on Nov. 24, 2017.
Prior Publication US 2020/0291557 A1, Sep. 17, 2020
Int. Cl. D04H 3/004 (2012.01); B32B 5/02 (2006.01); B32B 5/06 (2006.01); B32B 5/26 (2006.01); C03C 13/00 (2006.01); D04H 3/115 (2012.01); F03D 1/06 (2006.01)
CPC D04H 3/004 (2013.01) [B32B 5/022 (2013.01); B32B 5/06 (2013.01); B32B 5/26 (2013.01); C03C 13/00 (2013.01); D04H 3/115 (2013.01); F03D 1/0675 (2013.01); B32B 2262/101 (2013.01); B32B 2413/00 (2013.01); B32B 2603/00 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A unidirectional non-crimp fabric of glass fiber rovings for the production of fiber composites, consisting of:
one glass fiber roving layer of multiple glass fiber rovings each having a length extending in a longitudinal direction of the non-crimp fabric and a width narrower than the length, wherein the multiple glass fiber rovings are spaced apart from each other in the longitudinal direction, and wherein the one glass fiber roving layer has a linear density between 1000 tex and 9600 tex;
a first stabilization layer on an underside of the glass fiber roving layer; and
a second stabilization layer on an upper side of the glass fiber roving layer,
wherein the first stabilization layer and second stabilization layer are sewn to each other by pillar stitching, wherein the pillar stitching extends parallel to the longitudinal direction and does not cross the multiple glass fiber rovings, and
wherein the first and the second stabilization layer are each formed as a weft layer, wherein the weft layers are made of glass fiber rovings having a linear density of between 34 tex and 300 tex, wherein the glass rovings are spaced from each other with a space of at least half the width of the glass fiber rovings of the one glass fiber roving layer and being arranged at an angle in the range of 65° to 110°, with respect to the longitudinal direction of the non-crimp fabric.