Abstract: A cushion material manufacturing method for obtaining a cushion material is provided. The cushion material have a foam body having a surface portion formed of an air permeability control surface portion and an air permeability uncontrol surface portion and a covering material configured to cover the air permeability uncontrol surface portion. The cushion material manufacturing method includes covering the air permeability uncontrol surface portion of the foam body with the covering material.

Abstract: A porous structural body 1 made of flexible resin or rubber, the porous structural body includes a skeleton part 2 throughout its entirety. The skeleton part includes a plurality of bone parts 2B and a plurality of coupling parts 2J coupling end parts of the plurality of respective bone parts with each other. The skeleton part has a plurality of annular parts 211 each constituted of the plurality of bone parts and the plurality of coupling parts into an annular shape. Each annular part zones a virtual surface V1 by its inner peripheral side edge part 2111. At least a part of each of one or a plurality of the virtual surfaces is covered with one or a plurality of partially connected films 31. Each of the one or plurality of partially connected films is connected to only a part of the annular part in a peripheral direction.

Abstract: A porous structural body 1 is a porous structural body made of flexible resin or rubber, the porous structural body including a skeleton part 2 throughout an entirety thereof, wherein the skeleton part includes: a plurality of bone parts 2B; and a plurality of connection parts 2J that connect end portions of the plurality of bone parts, and wherein the porous structural body is configured such that a plurality of portions of the skeleton part interfere with each other when the porous structural body is compressed to deform in a predetermined weight input direction.

Abstract: A cushion material with improved vibration absorptivity, and a cushion material manufacturing method for easily obtaining the cushion material are provided. The cushion material (1) includes a foam body (2) having a surface portion (20) formed of an air permeability control surface portion (21) and an air permeability uncontrol surface portion (22), and a covering material (3) configured to cover the air permeability uncontrol surface portion (22). The cushion material manufacturing method is a cushion material manufacturing method for obtaining the cushion material (1), and includes covering the air permeability uncontrol surface portion (22) of the foam body (2) with the covering material (3).