| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a water resistant and windproof composite fabric by providing an inner fabric layer and an outer fabric layer and further providing an intermediate vapor barrier having a variable water/vapor diffusion resistance which substantially decoreases as air speed impinging on the fabric increases. SOLUTION: A composite fabric 11 has a first layer 13 and a second layer 15 and a barrier 17 arranged between these layers. The fabric 11 has variable steam permeability and the barrier 17 comprises an adhesive material. The fabric 11 can be formed so as to have a specific controlled windproof level and a part of the air impinging on the fabric is deflected so as to separate from the barrier 17 and the other part thereof passes through the barrier 17. By this constitution, when wind velocity increases, the air passing through the barrier becomes still much and a larger quantity of vapor can be diffused. As a result, this composite fabric has relatively high steam permeability in moving air and is markedly decreased in steam permeability resistance accompanied by an increase in an air flow.</p> |
