FIBER SHEET

PROBLEM TO BE SOLVED: To provide a fiber sheet capable of achieving high functionality while excellent in gas permeability.SOLUTION: There is provided a fiber sheet by assembling fibers, the fiber has a stem with diameter of over 5 μm, at least a part of the fiber has a fibril part with diameter of...

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Bibliographische Detailangaben
Hauptverfasser: ARAIDA YASUAKI, OCHIAI TORU, KIYOOKA SUMITO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a fiber sheet capable of achieving high functionality while excellent in gas permeability.SOLUTION: There is provided a fiber sheet by assembling fibers, the fiber has a stem with diameter of over 5 μm, at least a part of the fiber has a fibril part with diameter of 5 μm or less extending from the stem, an intersection point A where stems cross each other, an intersection point B where the fibril parts cross each other and an intersection point C where the stem and the fibril part cross exist and the total of the number of the intersection point A, N, the number of the intersection point B, Nand the number of the intersection point C, Nis 30000 or more in 1 mm.SELECTED DRAWING: Figure 1 【課題】通気性に優れつつも、高い機能性を発揮し得る繊維シートを提供する。【解決手段】繊維が集合してなる繊維シートであって、繊維は、径5μm超の幹部を有し、繊維の少なくとも一部は、幹部から延出する径5μm以下のフィブリル部を有し、繊維シートは、幹部同士が交差する交点A、フィブリル部同士が交差する交点B、および幹部とフィブリル部とが交差する交点Cが存在しており、1mm2において、交点Aの数NA、交点Bの数NB、および交点Cの数NCの合計が30000以上である。【選択図】図1