| 摘要 |
PROBLEM TO BE SOLVED: To obviate the occurrence of numbness by congestion when a user lies in bed, to improve air permeability, lessen a sweaty feel and to make durability excellent and comfortability to sleep good by forming a cushion material as a three-dimensional net-like structure consisting of filaments random loops and specifying the contact area ratio to a flat plate. SOLUTION: The cushion material of the mattress for the bedding is the three-dimensional net-like structure consisting of the filaments random loops of 18 to 75% in the area ratio of the flat plate contact part by a measuring method of the flat plate contact part, by which the collapse of the capillary blood vessels on the body surface is obviated, the hindrance of the blood flow is averted and consequently, the occurrence of numbness and congestion may be prevented during long-term sitting when the cushion material is formed as the mattress for the bedding. Further, the cushion material of the mattress for the bedding is the three-dimensional net-like structure consisting of the filaments random loops and, therefore, the air permeability is extremely excellent and the occurrence of the sweaty feel is lessened in spite of the long-time use.
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