US 11,987,910 B2
Base cloth for material and manufacturing method therefor
Takeshi Tanaka, Tokyo (JP)
Assigned to Asahi Kasei Kabushiki Kaisha, Tokyo (JP)
Appl. No. 17/911,243
Filed by Asahi Kasei Kabushiki Kaisha, Tokyo (JP)
PCT Filed Mar. 26, 2021, PCT No. PCT/JP2021/013109
§ 371(c)(1), (2) Date Sep. 13, 2022,
PCT Pub. No. WO2021/193966, PCT Pub. Date Sep. 30, 2021.
Claims priority of application No. 2020-056760 (JP), filed on Mar. 26, 2020.
Prior Publication US 2023/0099686 A1, Mar. 30, 2023
Int. Cl. D03D 3/00 (2006.01); D03D 15/283 (2021.01); D03D 15/573 (2021.01); B60R 21/16 (2006.01)
CPC D03D 3/00 (2013.01) [D03D 15/283 (2021.01); D03D 15/573 (2021.01); D10B 2331/02 (2013.01); D10B 2401/00 (2013.01); D10B 2505/124 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A woven fabric base cloth for a material, which is composed of fibers having a yarn tenacity of 6.6 cN/dtex to 8.5 cN/dtex when dissembled from the base cloth, and in which a cloth surface is not subjected to resin coating, lamination, or a resin impregnation treatment, wherein in a force strain curve (FS) of the woven fibers obtained by Edgecomb Resistance measurement in accordance with ASTM D6479, for both warp and weft directions, in both 25° C. and 150° C. environments, E1, which is a value obtained by dividing a force amount increased in an strain range of 0.4% to 4.4% by a total cross-sectional area of fibers in the measurement direction, is 3 MPa to 25 MPa, and E2, which is a value obtained by dividing a ratio a force amount increased in an strain range of −4.8% to −0.8% from a fiber breaking point by a total cross-sectional area of fibers in the measurement direction, is 10 MPa to 30 MPa.