| 摘要 |
PROBLEM TO BE SOLVED: To provide a mattress smoothly bendable when using it for a reclining bed and with performances required for usual mattress such as good air permea bility, while hardly loading a pressure to the body. SOLUTION: This mattress comprises at least two foam layers. A plurality of projecting parts are continuously formed on the upper surface of the first foam layer, and a projecting line part is formed along at least one line. A plurality of projecting line parts extending in the same direction as one line are formed on the upper surface of the second foam layer, and it is so constituted that at least one groove formed between the projecting line parts overlaps the projecting line part of the first foam layer. The mattress is bendable along the overlap line of the projecting line part of the first foam layer and the groove of the second foam layer. |
