| abstract |
A thermoplastic urethane elastomer which does not contain halogen, has good flexibility in terms of texture, and is excellent in foaming properties, is rich in flexibility, has good texture, and has excellent foaming properties. The foam sheet is provided by calendering. A thermoplastic urethane elastomer containing azodicarbonamide as a foaming agent and zinc fatty acid as a molding aid is calendered. The thermoplastic urethane elastomer may contain the fatty acid zinc in an amount of 0.05 to 1.0 part by weight based on 100 parts by weight of the thermoplastic urethane elastomer. The urethane-based resin foam sheet may be formed by laminating and integrating the foamed urethane-based resin sheet with the base sheet in an unfoamed state, followed by heating and foaming. |