| abstract |
CENTER MATERIAL FOR CUSHION, AND CUSHION. One object is to provide a hygienic pad that has a suitable thickness to provide the repulsive force at or above a specified level and body holding property, is light in weight, has excellent air permeability, and is water washable. Cushion core material 1 comprising the three-dimensional mesh-like structure, which is comprised of a thermoplastic polyethylene resin, a thermoplastic polyester elastomer or a mixture of a thermoplastic polyethylene resin and a thermoplastic polyethylene elastomer. The three-dimensional network-like structure has a first layer that includes a thermoplastic resin and a second layer that is stacked on a single surface or both surfaces of the first layer and includes a different thermoplastic resin from the thermoplastic resin of the first layer. The three-dimensional net-like structure has an impact elasticity of no lower than 13 cm, a hysteresis loss of no higher than 34% and no lower than 13%, and a thermal expansion index of 0 to 8% in the longitudinal direction before and after a hot air drying test which is carried out at a temperature of 90°C for 30 minutes in (...). |