US 11,938,854 B2
Resin foamed body
Makoto Iizuka, Tokyo (JP)
Assigned to Archem Inc., Tokyo (JP)
Appl. No. 17/298,668
Filed by Archem Inc., Tokyo (JP)
PCT Filed Nov. 28, 2019, PCT No. PCT/JP2019/046666
§ 371(c)(1), (2) Date Jun. 1, 2021,
PCT Pub. No. WO2020/116325, PCT Pub. Date Jun. 11, 2020.
Claims priority of application No. 2018-226826 (JP), filed on Dec. 3, 2018.
Prior Publication US 2022/0055266 A1, Feb. 24, 2022
Int. Cl. B60N 2/90 (2018.01); B29C 44/34 (2006.01); B29D 99/00 (2010.01); B29K 75/00 (2006.01); B29K 105/04 (2006.01)
CPC B60N 2/90 (2018.02) [B29C 44/355 (2013.01); B29D 99/0092 (2013.01); B29K 2075/00 (2013.01); B29K 2105/045 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A resin foamed body made of flexible resin,
wherein the resin foamed body entirely includes a skeleton part,
the skeleton part includes
a plurality of bone parts, and
a plurality of connection parts connecting end parts of the plurality of bone parts,
the plurality of bone parts each include
a bone constant part extending while keeping cross-sectional area substantially constant, and
a bone change part extending from the bone constant part to the corresponding connection part while gradually increasing cross-sectional area, and
as for the plurality of bone parts, in each of the plurality of bone parts, an average value AV(A0/A1) of a ratio A0/A1 of cross-sectional area A0 of the bone change part of each bone part at an edge on the bone constant part side relative to cross-sectional area A1 of the bone change part at an edge on the connection part side satisfies
0.15≤AV(A0/A1)<0.5.