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公开(公告)号：USH2086H1
公开(公告)日：2003-10-07
申请号：US09358125
申请日：1999-07-20
IPC分类号： D04H500
摘要： The present invention provides a filter media comprising (a) a nonwoven composite material comprising a stabilized mixture of thermoplastic microfibers and at least about 50%, by weight, of a secondary fibrous material such as pulp or polymeric staple fibers; (b) a first outer nonwoven web comprising a substantially uniform nonwoven web of autogenously bonded multicomponent fibers; and (c) a second outer nonwoven web wherein the nonwoven composite material is positioned between the first outer nonwoven web and second outer nonwoven web. The filter material is well suited to filtering liquid borne particulate matter ranging in size from 5&mgr; to about 25&mgr;.
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公开(公告)号：US06315114B1
公开(公告)日：2001-11-13
申请号：US09531300
申请日：2000-03-22
IPC分类号： B65D8124
CPC分类号： B65D83/0894 , A47K10/3809 , A47K10/421 , A47K2010/3266 , A47K2010/428 , B65D83/0805 , D04H3/16 , Y10T428/1362
摘要： A cleaning system is provided comprising a sealable container housing a saturated stack of durable fine spunbond fiber cleaning sheets; the cleaning sheets have an average fiber diameter less than 18 micrometers, a tensile strength of at least 140-g/g/m2 and a basis weight between about 15 g/m2 and 85 g/m2. The cleaning sheets can be provided in stacked form and maintained within a sealed container wherein liquid is retained within the individual sheets as well as throughout the stack over time. The sheets can subsequently be removed from the container and applied to a surface wherein a high percent of the liquid is released from the sheet onto the surface in the initial pass and thereby allowing for improved treatment and/or cleaning of the surface.
摘要翻译： 提供了一种清洁系统，其包括容纳耐久的精细纺粘纤维清洁片的饱和叠层的可密封容器; 清洁片具有小于18微米的平均纤维直径，至少140g / g / m 2的拉伸强度和约15g / m 2至85g / m 2之间的基重。 清洁片可以以堆叠的形式提供并且保持在密封容器内，其中液体保留在单独的片材内以及整个堆叠中随时间流动。 随后将片材从容器中取出并施加到表面，其中高百分比的液体在初始通过中从片材释放到表面上，从而允许改进表面的处理和/或清洁。
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公开(公告)号：US06267252B1
公开(公告)日：2001-07-31
申请号：US09457627
申请日：1999-12-08
IPC分类号： B01D2900
CPC分类号： B01D39/18 , B01D39/163 , Y10T428/249921 , Y10T428/249938 , Y10T428/24994
摘要： The present invention pertains to a filter medium including an airlaid composite, which is made of pulp fibers, at least about 2% by weight bicomponent fiber, and moisture. This airlaid composite is unique in that, when used as a filter medium, it exhibits advantageous filtering properties as well as physical strength. The bicomponent fibers of the present invention include a first polymer component and a second polymer component, and the first polymer component melts at a temperature lower than the melting temperature of the second polymer component. Mixing of the pulp fibers with the bicomponent fibers is done in such a way that the fibers are evenly dispersed in the airlaid composite. This airlaid composite is then heated such that at least a portion of the first polymer component of the bicomponent fiber is melted, which bond the bicomponent fibers to many of the pulp and other bicomponent fibers when cooled. Moisture is added to the composite to further facilitate bonding when the composite is subsequently subjected to calendering. Optionally, a support structure may be used to supplement the strength of the airlaid composite. The filter medium of the present invention is characterized by a drape stiffness of at least about 6 cm, and tensile strength of at least about 4 kg. It may also exhibit relatively low average pore size and bubble point.
摘要翻译： 本发明涉及一种包括由纸浆纤维制成的至少约2重量％的双组分纤维和水分的气流成网复合材料的过滤介质。 这种气流成网复合材料是独特的，因为当用作过滤介质时，其表现出有利的过滤性能以及物理强度。 本发明的双组分纤维包括第一聚合物组分和第二聚合物组分，并且第一聚合物组分在低于第二聚合物组分的熔融温度的温度下熔化。 纸浆纤维与双组分纤维的混合以使纤维均匀地分散在气流成网复合材料中的方式进行。 然后将该气流成网复合材料加热，使得双组分纤维的第一聚合物组分的至少一部分熔融，当冷却时将双组分纤维粘合到许多纸浆和其它双组分纤维上。 当复合材料随后进行压延时，将水分加入到复合材料中以进一步促进粘合。 可选地，支撑结构可用于补充气流成网复合材料的强度。 本发明的过滤介质的特征在于至少约6cm的悬垂刚度和至少约4kg的拉伸强度。 它也可能表现出相对较低的平均孔径和起泡点。
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