| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a filling material of a mat for bedding which exhibits a high supporting stability and a body pressure balancing property. <P>SOLUTION: The filling material 10 of the mat for bedding is a laminated body comprising a first layer 13 and a third layer 15 of high-hardness polyurethane foam and a second layer 14 of high-rebound resilience polyurethane foam which are alternately stacked one above the other. Its top 11 has protrusions and depressions. Its underside 12 is a flat surface. The thickness of the high-hardness polyurethane foam constitutes 40-70% of the thickness of the filling material 10 of the mat for bedding from its underside 12 up to bottoms 11b of depressions in its top 11 and 50-80% of it in heads 11a of its protrusions. <P>COPYRIGHT: (C)2012,JPO&INPIT |
