| 摘要 |
PROBLEM TO BE SOLVED: To provide an elastic piece having excellent properties such as hardness, compression set and brittleness by using as the elastic piece a polyurethane foamed body obtained by mechanical frothing method using the mixture of a polyol component and a diisocyanate component as the principal raw materials together with various auxiliary raw materials such as additives and a gas for foaming. SOLUTION: This elastic piece obtained by the mechanical frothing method has a density of 400 to 600 kg/m3, an Asker-C hardness of 70 to 95 and a compression set of 10% or less. |
