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 |
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.
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