	US 11,939,708 B2
	Weft-knitted spacer fabric and a preparation method thereof, use of the fabric for the preparation of a composite material and a composite material comprising the same
Xiao Yu Sun, Shanghai (CN); Xiaojun Wu, Shanghai (CN); Li Chao Zhu, Shanghai (CN); Ren Zheng Zhang, Shanghai (CN); Wenyan Zhu, Wyandotte, MI (US); Xueli Hu, Shanghai (CN); and Hairu Long, Shanghai (CN)
Assigned to BASF SE, Ludwigshafen Am Rhein (DE)
Appl. No. 17/046,587
Filed by BASF SE, Ludwigshafen am Rhein (DE)
PCT Filed Apr. 8, 2019, PCT No. PCT/EP2019/058772 § 371(c)(1), (2) Date Oct. 9, 2020, PCT Pub. No. WO2019/197319, PCT Pub. Date Oct. 17, 2019.
Claims priority of application No. 201810331217.9 (CN), filed on Apr. 13, 2018.
Prior Publication US 2021/0115600 A1, Apr. 22, 2021
Int. Cl. D04B 1/22 (2006.01); A43B 13/12 (2006.01); C08J 9/12 (2006.01); D04B 1/16 (2006.01); D04B 1/18 (2006.01); D04B 1/26 (2006.01); D04B 15/70 (2006.01); D06N 3/00 (2006.01); D06N 3/12 (2006.01); D06N 3/14 (2006.01)

CPC D04B 1/22 (2013.01) [A43B 13/12 (2013.01); C08J 9/125 (2013.01); D04B 1/16 (2013.01); D04B 1/18 (2013.01); D04B 15/70 (2013.01); D06N 3/0009 (2013.01); D06N 3/0043 (2013.01); D06N 3/0086 (2013.01); D06N 3/123 (2013.01); D06N 3/14 (2013.01); C08J 2203/10 (2013.01); C08J 2375/08 (2013.01); C08J 2467/02 (2013.01); C08J 2475/08 (2013.01); C08J 2477/06 (2013.01); D10B 2401/08 (2013.01); D10B 2403/0222 (2013.01); D10B 2501/043 (2013.01)]

26 Claims

1. A weft-knitted spacer fabric consisting of an upper surface layer, intermediate spacer yarns, and a lower surface layer, wherein the upper surface layer and the lower surface layer use two yarns, non-elastic and elastic yarns, and there are tucks formed by the intermediate spacer yarns between the upper and lower surface layers, so that the upper surface is connected with the lower surface layer to form a three-dimensional structure in an integrated manner, characterized in that by selectively using a tuck with a different connecting distance in a local region than other regions and by an action of the elastic yarns in the upper and lower surface layers, a thickness of a local region is changed.