US 12,473,672 B2
Surface covering material
Hideo Ikenaga, Tokyo (JP)
Assigned to Asahi Kasei Kabushiki Kaisha, Tokyo (JP)
Appl. No. 18/281,011
Filed by Asahi Kasei Kabushiki Kaisha, Tokyo (JP)
PCT Filed Mar. 22, 2022, PCT No. PCT/JP2022/013177
§ 371(c)(1), (2) Date Sep. 8, 2023,
PCT Pub. No. WO2022/202815, PCT Pub. Date Sep. 29, 2022.
Claims priority of application No. 2021-049849 (JP), filed on Mar. 24, 2021.
Prior Publication US 2024/0035211 A1, Feb. 1, 2024
Int. Cl. D04B 21/20 (2006.01)
CPC D04B 21/20 (2013.01) [D10B 2403/033 (2013.01); D10B 2505/08 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A surface covering material constructed from a three-dimensional knitted fabric that includes
a front layer knitted fabric,
a back layer knitted fabric, and
a connecting layer comprising a connecting thread connecting the front layer knitted fabric and back layer knitted fabric,
wherein an outer surface of the front layer knitted fabric is a side configured to contact with a human body, and a stitch density of the front layer knitted fabric is 13,000 to 19,000,
the front layer knitted fabric of the three-dimensional knitted fabric includes a mesh structure formed by a yarn knitting process wherein a yarn supply method for the yarn knitting process has a threading arrangement of 1-in, 1-out plus 1-out, 1-in, or 2-in, 2-out plus 2-out, 2-in when supplying yarn from at least two guide combs, and the mesh structure has one of the knitted structures selected from the group consisting of:
Pattern 1:
L1: 1011/2322/(1-in, 1-out)
L2: 2322/1011/(1-out, 1-in), and
Pattern 2:
L2: 1011/2344/6766/5433/(2-in, 2-out)
L3: 6766/5433/1011/2344/(2-in, 2-out),
wherein L1, L2 and L3 are guide combs forming the mesh structure,
sizes of openings of the mesh structure are 0.3 mm to 2.5 mm, and
an open area ratio at a depth of 250 μm inward from the outer surface of the front layer knitted fabric of the three-dimensional knitted fabric is 15% to 70%.