| 摘要 |
A ventilation structure as a material for manufacturing sheet of cloth, mat, footwear, mattress cover, etc, is disclosed that includes a lower layer of knitted fabric formed of a water-impermeable and water vapor-permeable fabric; an upper layer of knitted fabric formed of a water-impermeable and water vapor-permeable fabric; a plurality of support members formed between the upper and the lower layers; and a plurality of reticulated air ducts formed between the upper and the lower layers with the support members disposed thereamong. In one embodiment, the support members are shaped as triangle. Preferably, the support members are formed of plastic. In another embodiment, the hardness of a first portion of the support members is higher than that of the remaining portions of the support members. In yet another embodiment, the support members have a projecting portion contacting either the upper layer or the lower layer.
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