Melt-blown tubular core elements and filter cartridges including the same
    2.
    发明授权
    Melt-blown tubular core elements and filter cartridges including the same 有权
    熔喷管状芯体和包括其的滤芯

    公开(公告)号:US06342283B1

    公开(公告)日:2002-01-29

    申请号:US09358886

    申请日:1999-07-22

    IPC分类号: B01D2913

    摘要: Filter cartridges may have a core element formed of a non-filtering, self-supporting non-woven mass of indefinite length continuous synthetic polymeric core fibers, and at least one annular filtration zone layer formed of a mass of non-woven indefinite length continuous synthetic polymeric filtration fibers. The non-woven core element is most preferably formed in situ during filter cartridge manufacturing by melt-blowing synthetic polymeric core fiber streams toward a forming mandrel. The non-woven core element is completely solidified prior to the filtration zone fibers being melt-blown thereon so that the core and filtration fibers are predominantly mechanically interlocked with one another, instead of being melt-bonded thereto. Filter cartridges of predetermined length may be cut from an upstream filter cartridge preform of indefinite length by subjecting the preform to forced cooling air to thereby minimize (if not eliminate entirely) significant filter cartridge shrinkage over time. In addition, a cutter assembly may be mounted laterally of the preform, but is capable of rate-synchronized longitudinal movement with the preform during its cutting operation.

    摘要翻译: 过滤筒可以具有由非过滤自支撑的无限长度的连续合成聚合物芯纤维的非织造织物形成的芯部元件,以及至少一个环形过滤区层,其由大量无定形长度的连续合成纤维 聚合物过滤纤维。 非织造芯元件最优选在通过将合成聚合物芯纤维流熔化成成型心轴的过滤器滤芯制造期间原位形成。 在过滤区域纤维被熔融吹塑之前,无纺芯芯元件完全固化,使得芯和过滤纤维主要彼此机械地互锁,而不是与其熔融粘结。 预定长度的过滤筒可以通过使预成型坯经受强制冷却空气从而从不确定长度的上游过滤器滤芯预制件切割,从而使显着的滤筒随时间的收缩最小化(如果不是完全消除)。 此外,切割器组件可以在预成型件的侧面安装,但是在切割操作期间能够与预成型件进行速率同步的纵向移动。

    Method of making filtration media having integrally co-located support
and filtration fibers
    8.
    发明授权
    Method of making filtration media having integrally co-located support and filtration fibers 失效
    制备具有整体上共位的载体和过滤纤维的过滤介质的方法

    公开(公告)号:US5783011A

    公开(公告)日:1998-07-21

    申请号:US646151

    申请日:1996-05-07

    摘要: Filtration medium is formed of a mass of nonwoven melt blown support and filtration fibers which are integrally co-located with one another. The support fibers have, on average, relatively larger diameters as compared to the filtration fibers which are integrally co-located therewith. Preferably, the filtration medium is disposed within at least one annular zone of a filtration element, for example, a disposable cylindrical filter cartridge having an axially elongate central hollow passageway which is surrounded by the filtration media. A depth filter cartridge in accordance with the present invention may thus be formed having one or more additional filtration zones (which additional filtration zones may or may not respectively be provided with integrally co-located support fibers) in annular relationship to one another. As a result of the melt blown, nonwoven fiber structure in accordance with the present invention whereby at least one filtration zone is comprised of relatively larger diameter support fibers integrally co-located with relatively smaller diameter filtration fibers, a filter cartridge having a wide range of "engineered" physical properties (e.g., in terms of filtration, pressure drop tolerance and the like) can be provided.

    摘要翻译: 过滤介质由大量非对称熔喷支撑和过滤纤维形成,它们彼此整体地位于一起。 与与其整体地定位的过滤纤维相比,支撑纤维平均具有相对较大的直径。 优选地,过滤介质设置在过滤元件的至少一个环形区域中,例如,一次性圆柱形过滤器滤芯,其具有由过滤介质包围的轴向细长的中心空心通道。 因此,根据本发明的深度过滤器滤芯可以形成为具有一个或多个另外的过滤区域(其另外的过滤区域可以分别地或可以不分别设置有一体的共同位置的支撑纤维),其彼此呈环形关系。 作为熔喷的结果,根据本发明的非织造纤维结构,由此至少一个过滤区域由相对较大直径的支撑纤维组成,其与相对较小直径的过滤纤维整体地位于一起,具有宽范围的 可以提供“工程化”的物理性质(例如,在过滤方面,耐压降等)。

    Filter cartridges having nonwoven melt blown filtration media with
integral co-located support and filtration
    10.
    发明授权
    Filter cartridges having nonwoven melt blown filtration media with integral co-located support and filtration 失效
    具有无纺布熔喷过滤介质的过滤筒具有整体的同位置支撑和过滤

    公开(公告)号:US5591335A

    公开(公告)日:1997-01-07

    申请号:US433006

    申请日:1995-05-02

    摘要: Filtration medium is formed of a mass of nonwoven melt blown support and filtration fibers which are integrally co-located with one another. The support fibers have, on average, relatively larger diameters as compared to the filtration fibers which are integrally co-located therewith. Preferably, the filtration medium is disposed within at least one annular zone of a filtration element, for example, a disposable cylindrical filter cartridge having an axially elongate central hollow passageway which is surrounded by the filtration media. A depth filter cartridge in accordance with the present invention may thus be formed having one or more additional filtration zones (which additional filtration zones may or may not respectively be provided with integrally co-located support fibers) in annular relationship to one another. As a result of the melt blown, nonwoven fiber structure in accordance with the present invention whereby at least one filtration zone is comprised of relatively larger diameter support fibers integrally co-located with relatively smaller diameter filtration fibers, a filter cartridge having a wide range of "engineered" physical properties (e.g., in terms of filtration, pressure drop tolerance and the like) can be provided.

    摘要翻译: 过滤介质由大量非对称熔喷支撑和过滤纤维形成,它们彼此整体地位于一起。 与与其整体地定位的过滤纤维相比,支撑纤维平均具有相对较大的直径。 优选地,过滤介质设置在过滤元件的至少一个环形区域中,例如,一次性圆柱形过滤器滤芯,其具有由过滤介质包围的轴向细长的中心空心通道。 因此,根据本发明的深度过滤器滤芯可以形成为具有一个或多个另外的过滤区域(其另外的过滤区域可以分别地或可以不分别设置有一体的共同位置的支撑纤维),其彼此呈环形关系。 作为熔喷的结果,根据本发明的非织造纤维结构,由此至少一个过滤区域由相对较大直径的支撑纤维组成,其与相对较小直径的过滤纤维整体地位于一起,具有宽范围的 可以提供“工程化”的物理性质(例如,在过滤方面,耐压降等)。