FOAM, COMPOSITION FOR FOAM, AND USE OF THE FOAM

摘要

[Objects] It is an object to provide a foam having a low specific gravity and a small compression set, more preferably a foam having a low specific gravity, a small compression set and uniform quality, a foaming composition, and applications of the foam. [Means for solution] The foam is obtained by foaming an olefin polymer, wherein the foam has a specific gravity (d) in the range of 0.03 to 0.30, and a compression set (CS, %) and the specific gravity (d) satisfy the formula of CS ‰¤ -279 x (d) + 95. The foam is preferably obtained from a foaming composition that includes an ethylene polymer (A) including a specific ethylene/±-olefin copolymer (A1) and an ethylene/polar monomer copolymer (A2) in a specific mass ratio, and a specific ethylene/C3-20 ±-olefin/non-conjugated polyene copolymer (B).