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公开(公告)号：US5732718A
公开(公告)日：1998-03-31
申请号：US294701
申请日：1994-08-23
摘要： Disclosed is a filter for tobacco smoke composed of at least one layer of a wet-formed absorbent fibrous nonwoven composite structure containing: 1) from about 30 to about 65 percent, by weight, of pulp fibers forming a matrix having a first exterior surface and a second exterior surface; and 2) about 35 to about 70 percent, by weight, of activated carbon integrated into the matrix of pulp fibers such that the concentration of activated carbon adjacent the first exterior surface is at least about 60 percent, as determined by optical image analysis, and the concentration of activated carbon adjacent the second exterior surface is less than about 40 percent, as determined by optical image analysis, so that the filter is adapted to selectively reduce the C.sub.3 -C.sub.4 carbonyl component of conventional tobacco smoke at least about 25 percent more than a conventional cellulose acetate filter for an identical tobacco smoke. Also disclosed is a method of making the filter.
摘要翻译： 公开了一种用于烟草烟雾的过滤器，其由至少一层湿成型吸湿性纤维非织造复合结构组成，其包含：1）约30至约65重量％的形成具有第一外表面的基质的纸浆纤维，以及 第二外表面; 和2）约35至约70重量％的整合到纸浆纤维基质中的活性炭，使得通过光学图像分析测定，邻近第一外表面的活性炭的浓度为至少约60％，和 邻近第二外表面的活性炭的浓度小于约40％，如通过光学图像分析确定的，使得过滤器适于选择性地将常规烟草烟雾中的C 3 -C 4羰基组分降低至约25％ 用于相同烟草烟雾的常规醋酸纤维素过滤器。 还公开了制造该过滤器的方法。
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公开(公告)号：US5672306A
公开(公告)日：1997-09-30
申请号：US453602
申请日：1995-05-30
CPC分类号： B32B5/16 , A24D3/10 , D04H1/407 , D04H1/425 , D04H1/732 , Y10S55/44 , Y10T428/24942 , Y10T428/24992 , Y10T428/30 , Y10T442/673 , Y10T442/699
摘要： Disclosed is an adsorbent fibrous nonwoven structure composed of a matrix of pulp fibers having a first exterior surface and a second exterior surface; and an adsorbent material integrated into the pulp fiber matrix so that the concentration of adsorbent material adjacent the first exterior surface of the nonwoven structure is at least about 60 percent, as determined by optical image analysis, and the concentration of adsorbent material adjacent the second exterior surface is less than about 40 percent, as determined by optical image analysis. This adsorbent nonwoven structure provides useful strength and low-lint characteristics. The fibrous nonwoven structure of the present invention may be laminated together or to surfaces of other materials.
摘要翻译： 公开了一种由具有第一外表面和第二外表面的纸浆纤维基质组成的吸附剂纤维非织造结构; 以及集成到纸浆纤维基质中的吸附剂材料，使得与非织造结构的第一外表面相邻的吸附剂材料的浓度为至少约60％，如通过光学图像分析确定的，并且与第二外部相邻的吸附材料的浓度 通过光学图像分析测定，表面积小于约40％。 该吸附剂非织造结构提供有用的强度和低绒毛特性。 本发明的纤维非织造织物可以层压在一起或与其它材料的表面层叠。
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