ARTIFICIAL LEATHER WHICH ALLOWS UNEVEN DYEING INCONSPICUOUS AND HAS MOIST FEELING AND DENSE FEELING, AND METHOD FOR PRODUCING THE SAME

• Main Authors: IKEHATA HISATAKA, HIRONAKA DAISUKE, TERAMURA TAKUYA, TADOKORO YOSHIYUKI, UMEMOTO DAIKI
• Format: Patent
• Language: English; Japanese
• Published: 06.05.2021
• Subjects: FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR; LAUNDERING; TEXTILES; TREATMENT OF TEXTILES OR THE LIKE; WALL, FLOOR OR LIKE COVERING MATERIALS, e.g. LINOLEUM,OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF AFIBROUS WEB COATED WITH A LAYER OF MACROMOLECULARMATERIAL

To provide an artificial leather having inconspicuousness of uneven dyeing and both dense feeling and moist feeling and capable of being suitably used for decoration products including a skin material of a seat or an interior material such as for interior, for automobile, for aircraft, or for railway vehicle.SOLUTION: An artificial leather comprises a fiber sheet and a polyurethane resin. The fiber sheet comprises at least a fiber layer (A) constituting a first outside surface of the artificial leather. A k-vicinity distance ratio value (k=9, radius r=20 μm) is 10% or more and 80% or less between cross sections of single fibers constituting the fiber layer (A) in a cross section in a thickness direction of the fiber layer (A). The fiber layer (A) has a surface polyurethane resin area ratio of 8% or more and 25% or less. The fiber layer (A) has a standard deviation of the polyurethane resin area ratio of 25% or less.SELECTED DRAWING: Figure 6 【課題】インテリア用、自動車用、航空機用、鉄道車両用等のシートの表皮材又は内装材等、服飾製品等に好適に用いることができる、染色斑の目立ち難さ、緻密感、そしてしっとり感を両立した人工皮革の提供。【解決手段】本発明の人工皮革は、繊維シートとポリウレタン樹脂とを含む人工皮革であって、該繊維シートが、該人工皮革の第１の外表面を構成する繊維層（Ａ）を少なくとも含み、かつ、該人工皮革の厚み方向断面における該繊維層（Ａ）を構成する単繊維断面の間のｋ近傍距離割合値（ｋ＝９、半径ｒ＝２０μｍ）が１０％以上８０％以下であり、かつ、前記繊維層（Ａ）の表面ポリウレタン樹脂面積率が８％以上２５％以下であり、かつ、前記繊維層（Ａ）の表面ポリウレタン樹脂面積率の標準偏差が２５％以下であることを特徴とする人工皮革である。【選択図】図６