US 12,108,881 B2
Seat pad and seat pad manufacturing method
Yukiko Yamaguchi, Tokyo (JP); Yoshiyuki Takahashi, Tokyo (JP); and Taichi Itabashi, Tokyo (JP)
Assigned to Archem Inc., Tokyo (JP)
Appl. No. 17/756,775
Filed by Archem Inc., Tokyo (JP)
PCT Filed Dec. 8, 2020, PCT No. PCT/JP2020/045740
§ 371(c)(1), (2) Date Jun. 2, 2022,
PCT Pub. No. WO2021/117744, PCT Pub. Date Jun. 17, 2021.
Claims priority of application No. 2019-225322 (JP), filed on Dec. 13, 2019.
Prior Publication US 2022/0369828 A1, Nov. 24, 2022
Int. Cl. A47C 27/14 (2006.01); B29C 44/14 (2006.01); B60N 2/90 (2018.01); B29K 75/00 (2006.01); B29K 623/00 (2006.01); B29K 625/00 (2006.01); B29L 31/00 (2006.01)
CPC A47C 27/14 (2013.01) [B29C 44/14 (2013.01); B60N 2/90 (2018.02); B29K 2075/00 (2013.01); B29K 2623/0633 (2013.01); B29K 2625/06 (2013.01); B29L 2031/771 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A seat pad comprising a surface portion up to 10 mm from a surface,
wherein
an air permeability of the surface portion is measured in compliance with JIS K 6400-4:2004, the air permeability is more than 5 cc/cm2/sec and at or less than 25 cc/cm2/sec,
the seat pad further comprises a cushion pad,
a seat portion of the cushion pad is partitioned into an under-buttocks portion and an under-knees portion,
the air permeability of the surface portion of the under-buttocks portion on a seat side is within a range of more than 5 cc/cm2/sec and at or less than 25 cc/cm2/sec, when the air permeability is measured in compliance with JIS K 6400-4:2004, and
the air permeability of the surface portion of the under-knees portion is greater than the air permeability of the surface portion of the under-buttocks portion.