Title:
LEATHER-LIKE SHEET AND METHOD OF MANUFACTURING THE SAME
Document Type and Number:
WIPO Patent Application WO/2007/040144
Kind Code:
A1
Abstract:
Disclosed is a leather-like sheet, comprising a microfiber interlaced body formed from a microfiber bundle and a polymeric elastic body provided in the inside of the interlaced body. The microfiber bundle comprises extremely fine unit fibers having an average cross section of 0.1 to 30 μm2, has an average cross section of 40 to 400 μm2, and is formed at a density of 600 to 4000 pieces/mm2 as measured on an arbitrary cross section parallel with the thickness-wise direction of the microfiber interlaced body. The polymeric elastic body contains a polymer of an ethylenically unsaturated monomer in an amount of 30 to 100% by mass, wherein the polymer of the ethylenically unsaturated monomer comprises a soft component having a glass transition temperature (Tg) of less than -5°C and a crosslinkable component and optionally a hard component having a glass-transient temperature (Tg) exceeding 50°C and other components. In the leather-like sheet, the polymer of the ethylenically unsaturated monomer is fixed to a microfiber present in the inside of the microfiber bundle. The leather-like sheet has a natural leather-like flexibility, a texture (e.g., solid touch feeling) and expensive aesthetic appearance and is excellent in stability of quality (e.g., rigidity, surface wear resistance) and practical performance.
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Inventors:
NAKAYAMA, Kimio (1621, Sakazu, Kurashiki-sh, Okayama 22, 7108622, JP)
中山 公男 (〒22 岡山県倉敷市酒津１６２１番地 株式会社クラレ内 Okayama, 7108622, JP)
YAMASAKI, Tsuyoshi (1621, Sakazu, Kurashiki-sh, Okayama 22, 7108622, JP)
山崎 豪 (〒22 岡山県倉敷市酒津１６２１番地 株式会社クラレ内 Okayama, 7108622, JP)
中山 公男 (〒22 岡山県倉敷市酒津１６２１番地 株式会社クラレ内 Okayama, 7108622, JP)
YAMASAKI, Tsuyoshi (1621, Sakazu, Kurashiki-sh, Okayama 22, 7108622, JP)
山崎 豪 (〒22 岡山県倉敷市酒津１６２１番地 株式会社クラレ内 Okayama, 7108622, JP)
Application Number:
JP2006/319332
Publication Date:
April 12, 2007
Filing Date:
September 28, 2006
Export Citation:
Assignee:
KURARAY CO., LTD. (1621, Sakazu Kurashiki-sh, Okayama 22, 7108622, JP)
株式会社クラレ (〒22 岡山県倉敷市酒津１６２１ Okayama, 7108622, JP)
NAKAYAMA, Kimio (1621, Sakazu, Kurashiki-sh, Okayama 22, 7108622, JP)
中山 公男 (〒22 岡山県倉敷市酒津１６２１番地 株式会社クラレ内 Okayama, 7108622, JP)
YAMASAKI, Tsuyoshi (1621, Sakazu, Kurashiki-sh, Okayama 22, 7108622, JP)
株式会社クラレ (〒22 岡山県倉敷市酒津１６２１ Okayama, 7108622, JP)
NAKAYAMA, Kimio (1621, Sakazu, Kurashiki-sh, Okayama 22, 7108622, JP)
中山 公男 (〒22 岡山県倉敷市酒津１６２１番地 株式会社クラレ内 Okayama, 7108622, JP)
YAMASAKI, Tsuyoshi (1621, Sakazu, Kurashiki-sh, Okayama 22, 7108622, JP)
International Classes:
D06N3/00; D04H3/10; D04H3/16; D06M11/00; D06M11/38; D06M15/263; D06M101/32
Attorney, Agent or Firm:
OHTANI, Tamotsu (OHTANI PATENT OFFICE, Bridgestone Toranomon Bldg. 6F 25-2, Toranomon 3-chom, Minato-ku Tokyo 01, 1050001, JP)
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