| 摘要 |
PROBLEM TO BE SOLVED: To prevent house dust from being generated in large quantities and improve cushioning characteristics and durability. SOLUTION: An intermediate layer member being a reticulated three- dimensional structure wherein filaments are crossliked one to another and the filaments at a point of contact are fused to each other is interposed between surface layer members in each of which filaments are crosslinked one to another and the filaments at the point of contact are fused to each other. In the surface layer member, filaments are crosslinked one to another more densely as compared to the intermediate layer member.
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