| abstract |
(57) [Summary] [Structure] (a) Polyethylene-based polymer 15 to 55% by weight and ethylene-propylene-diene copolymer 85 to 45 Olefinic thermoplastic elastomer 10% by weight 5 parts by weight to 95 parts by weight of the water absorbent resin (b) relative to 0 parts by weight, (C) 1 to 25 parts by weight of inorganic filler, (d) softener 2 to A method for producing a foam, which comprises heat-foaming a resin composition containing 20 parts by weight and (e) 1 to 10 parts by weight of a foaming agent to an expansion ratio of 8 times or less, which is ionizing radiation before or after the heat-foaming. And a method for producing a water-absorbent resin crosslinked foam. [Effect] It has excellent mechanical properties and shape retention, and is suitable for various waterproof seals, waterproof materials, etc. |