| 摘要 |
<p>Disclosed is a foam having low specific gravity and low compression set, more preferably a foam having low specific gravity, low compression set and uniform quality. Also disclosed are a composition for foam and a use of the foam. Specifically disclosed is a foam characterized by being obtained by expanding an olefin polymer, having a specific gravity (d) within a range of 0.03-0.30, and satisfying the relation between the compression set (CS, %) and the specific gravity (d) of CS <=-279 x (d) + 95. This foam is preferably obtained from a composition for foams containing an ethylene polymer (A), which contains a specific ethylene/alpha-olefin copolymer (A1) and an ethylene/polar monomer copolymer (A2) at a specific mass ratio, and a specific ethylene/alpha-olefin with 3-20 carbon atoms/non-conjugated polyene copolymer (B).</p> |
