Elastomer porous material and method of producing the same

An elastomer porous material, characterized in that, when cells in a first observation region of a first cross section are observed at a certain magnification, cells having a shape factor SF2, which indicates the remoteness from complete roundness and is represented by the following formula:

• SF
• 
• 
• 2
• =
• P
• 2
• 4
• 
• π
• 
• 
• A
• ×
• 100
• [
• F
• 
• 
• 1
• ]
• (wherein A represents the area of each cell, and P represents the perimeter length thereof), of 130 or less account for 80% or more of all cells in the first observation region, and, when cells in a second observation region of a second cross section orthogonal to the first cross section are observed at a certain magnification, cells having a shape factor SF2, which indicates the remoteness from complete roundness and is represented by the same formula (wherein A represents the area of each cell, and P represents the perimeter length thereof), of 130 or less account for 80% or more of all cells in the second observation region.

A method for producing an elastomer porous material, characterized in that the method comprises preparing, under reduced pressure, an emulsion composition comprising, as a continuous phase, a liquid rubber material which forms an elastomer through curing;

• and curing the emulsion composition while removing a dispersion phase, to thereby produce an elastomer porous material wherein, when cells in a first observation region of a first cross section are observed at a certain magnification, cells having a shape factor SF2, which indicates the remoteness from complete roundness and is represented by the following formula:
• SF
• 
• 
• 2
• =
• P
• 2
• 4
• 
• π
• 
• 
• A
• ×
• 100
• [
• F
• 
• 
• 2
• ]
• (wherein A represents the area of each cell, and P represents the perimeter length thereof), of 130 or less account for 80% or more of all cells in the first observation region, and, when cells in a second observation region of a second cross section orthogonal to the first cross section are observed at a certain magnification, cells having a shape factor SF2, which indicates the remoteness from complete roundness and is represented by the same formula (wherein A represents the area of each cell, and P represents the perimeter length thereof), of 130 or less account for 80% or more of all cells in the second observation region.