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    Cigarette filter and filter material therefor
    1.
    发明授权
    Cigarette filter and filter material therefor 失效
    香烟过滤器和过滤材料

    公开(公告)号：US5913311A

    公开(公告)日：1999-06-22

    申请号：US833055

    申请日：1997-04-03

    申请人： Katsutaka Ito ,  Tsuruyoshi Matsumoto ,  Atsushi Tokida ,  Tetsuro Shibata ,  Yoichiro Yamashita

    发明人： Katsutaka Ito ,  Tsuruyoshi Matsumoto ,  Atsushi Tokida ,  Tetsuro Shibata ,  Yoichiro Yamashita

    IPC分类号： A24D3/04 ,  A24D3/10 ,  A24D3/02

    CPC分类号： A24D3/04 ,  A24D3/10

    摘要： A filter material comprises a cellulose acetate fiber tow containing 5-50% by weight of a water soluble material and/or a water dispersible material which are soluble in a solvent which dissolves cellulose acetate and which are not compatible with cellulose acetate. Due to the inclusion of the above-mentioned water soluble material and/or water dispersible material in the cellulose acetate fiber, in the presence of moisture, the fiber surface becomes porous by the elution of this water soluble material and/or water dispersible material from the fiber, and the surface area of the fiber is increased. Consequently, the shape of the cellulose acetate fiber tow is easily broken down, and the decomposability of the fiber by microorganisms and the like is increased. When a cigarette filter is made using this type of filter material, a cigarette filter is obtained which has easy decomposability in the natural environment and particularly in water, in atmospheres which contain large amounts of moisture, and the like.

    摘要翻译： 过滤材料包括含有5-50重量％水溶性材料和/或可溶于溶解醋酸纤维素并且与乙酸纤维素不相容的溶剂的水分散性材料的乙酸纤维素纤维素纤维。 由于将上述水溶性材料和/或水分散性材料包含在醋酸纤维素纤维中，在水分存在下，通过将该水溶性材料和/或水可分散材料从 纤维和纤维的表面积增加。 因此，醋酸纤维素纤维束的形状易于分解，并且纤维的微生物等的分解性提高。 当使用这种过滤材料制造香烟过滤嘴时，获得了在天然环境中，特别是水中，在含有大量水分的气氛中易分解性的香烟过滤嘴等。

    Filter for a cigarette and a filter-tipped cigarette
    2.
    发明授权
    Filter for a cigarette and a filter-tipped cigarette 失效
    过滤香烟和过滤嘴香烟

    公开(公告)号：US06718989B1

    公开(公告)日：2004-04-13

    申请号：US09624246

    申请日：2000-07-24

    申请人： Paul Clarke ,  John Charlton ,  Ichiro Atobe ,  Atsushi Tokida

    发明人： Paul Clarke ,  John Charlton ,  Ichiro Atobe ,  Atsushi Tokida

    IPC分类号： A24C550

    CPC分类号： A24D3/04

    摘要： A filter for a cigarette and a filter-tipped cigarette having a high degree of freedom in control of filtering-efficiency of smoke are provided. The filter has a core 10 and a sheath 12 made preferably of tow of cellulose acetate fibers. A plurality of axial passages 16 is formed between the core and the sheath and extend continuously between both end faces of the filter.

    摘要翻译： 提供了一种用于烟雾和过滤嘴的香烟的过滤器，其具有控制烟雾过滤效率的高自由度。 过滤器具有芯部10和优选由纤维素醋酸酯纤维的丝束制成的护套12。 在芯和护套之间形成多个轴向通道16，并且在过滤器的两个端面之间连续延伸。