FIBER SHEET HAVING WATER IMMERSION DIRECTIVITY

To be able to exert water-holding properties, and water-transmitting properties by providing a constitution having hydrophilic characteristics (water immersion characteristics), and having specific direction characteristics (directivity) with regard to the water immersion characteristics, and to use in such an application that a sheet is laid in a planting ground using the water-holding properties, and the water-transmitting properties.SOLUTION: The fiber sheet has a main body layer 2 comprising a nonwoven fabric. The main body layer 2 is constituted by arranging a plurality of immersion function bands 5 which is relatively coarse in fiber density, and a plurality of exudation faction bands 6 which is dense in a band length direction respectively in parallel, and in a band width direction in alternate shifts. In the nonwoven fabric forming the main body layer 2, fiber directions are arranged in a single direction while agreeing in a band lengthwise direction of the immersion function band 5 and the exudation function band 6.SELECTED DRAWING: Figure 1 【課題】水と馴染み易い特性（浸み込み性）を有すると共に、この浸み込み性について特定の方向性（指向性）を有する構成を備えることにより、保水性や導水性を発現できるものとし、これら保水性や導水性を利用して、例えば植栽地の地中に敷設するような用途にも使用できるようにする。【解決手段】不織布より成る本体層２を有し、本体層２は相対的に繊維密度が粗である複数の浸み込み機能帯５と密である複数の滲み出し機能帯６とが互いに帯長手方向を平行させると共に帯幅方向で交互に配置されており、本体層２を形成する不織布は繊維方向を浸み込み機能帯５及び滲み出し機能帯６の帯長手方向に合致させつつ単一方向に揃えられている。【選択図】図１