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    • 7. 发明授权
    • Leather-like sheet and method of manufacturing the same
    • 皮革样片材及其制造方法
    • US08445391B2
    • 2013-05-21
    • US12088565
    • 2006-09-28
    • Kimio NakayamaTsuyoshi YamasakiNobuo TakaokaJiro Tanaka
    • Kimio NakayamaTsuyoshi YamasakiNobuo TakaokaJiro Tanaka
    • D06C11/00B32B27/04D04H3/08
    • D06N3/0004D04H3/105D04H3/16D06M15/263D06N3/04D06N3/144Y10T428/2395Y10T428/24438Y10T428/249921Y10T442/2377Y10T442/614Y10T442/637
    • A leather-like sheet composed of a microfine-fiber entangled body made of bundles of microfine fibers and an elastic polymer impregnated therein. The bundles of microfine fibers are composed of microfine monofibers having an average cross-sectional area of 0.1 to 30 μm2 and have an average cross-sectional area of 40 to 400 μm2. The bundles of microfine fibers exist in a density of 600 to 4000/mm2 on a cross section taken along the thickness direction of the microfine-fiber entangled body. The elastic polymer contains 30 to 100% by mass of a polymer of ethylenically unsaturated monomer. The polymer of ethylenically unsaturated monomer is composed of a soft component having a glass transition temperature (Tg) of less than −5° C., a crosslinkable component, and optionally a hard component having a glass transition temperature (Tg) of higher than 50° C. and another component. The polymer of ethylenically unsaturated monomer is bonded to the microfine fibers in the bundles of microfine fibers. The leather-like sheet has a flexibility and hand such as dense feeling each resembling natural leathers and a high quality appearance. The leather-like sheet is highly stable in quality such as fastness and surface abrasion resistance and excellent in practical performance.
    • 由由超细纤维束制成的微细纤维缠结体和浸渍在其中的弹性聚合物构成的皮革状片材。 微细纤维束由平均截面积为0.1〜30μm2的微细单纤维构成,平均截面积为40〜400mum2。 微细纤维束沿着微细纤维缠结体的厚度方向截取的截面以600〜4000 / mm 2的密度存在。 弹性聚合物含有30〜100质量%的烯属不饱和单体的聚合物。 烯属不饱和单体的聚合物由玻璃化转变温度(Tg)小于-5℃的软组分,可交联组分和任选的玻璃化转变温度(Tg)高于50℃的硬组分组成 °C和另一种组分。 烯属不饱和单体的聚合物与微细纤维束中的微细纤维结合。 皮革状的片材具有柔软性和手感,每一种类似天然皮革的密实感和高品质的外观。 皮革状片材在坚牢度和表面耐磨性等性能方面高度稳定,实用性好。