POLYMERIC SURFACE TREATMENT OF FILTER MEDIA

    公开(公告)号:AU2003252132A1

    公开(公告)日:2004-02-09

    申请号:AU2003252132

    申请日:2003-07-24

    Applicant: CUNO INC

    Abstract: Fluid filtration devices that include nylon membranes are provided according to the present disclosure that maintain thorough wetting of a membrane through the end cap bonding process. The fluid filtration device typically includes a pleated microporous nylon filter media and polypropylene end caps. The pleated microporous filter media is treated with hydrophilic polymeric surface treatments at the ends thereof prior to contact with molten polypropylene end caps, thereby maintaining the ability to integrity test the filtration device in water. Exemplary polymeric surface treatments include solutions and dispersions of polyvinyl alcohol, polyethyleneimine, a combination of 1-4 butanediol diglycidyl ether and ethylene amine, and a quaternary amine polyepichlorohydrin.

    POLYMERIC SURFACE TREATMENT OF FILTER MEDIA
    2.
    发明申请
    POLYMERIC SURFACE TREATMENT OF FILTER MEDIA 审中-公开
    过滤介质的聚合物表面处理

    公开(公告)号:WO2004009201A3

    公开(公告)日:2004-09-23

    申请号:PCT/US0323062

    申请日:2003-07-24

    Applicant: CUNO INC

    Abstract: Fluid filtration devices that include nylon membranes are provided according to the present disclosure that maintain thorough wetting of a membrane through the end cap bonding process. The fluid filtration device typically includes a pleated microporous nylon filter media and polypropylene end caps. The pleated microporous media is treated with hydrophilic polymeric surface treatments at the ends thereof prior to contact with molten polypropylene end caps, thereby maintaining the ability to integrity test the filtration device in water. Exemplary polymeric surface treatments include solutions and dispersions of polyvinyl alcohol, polyethyleneimine, a combination of 1-4 butanediol diglycidyl ether and ethylene amine, and a quaternary amine polyepichlorohydrin.

    Abstract translation: 根据本公开内容提供了包括尼龙膜的流体过滤装置,其通过端帽结合过程维持膜的彻底润湿。 流体过滤装置通常包括打褶的微孔尼龙过滤介质和聚丙烯端盖。 打褶的微孔介质在与熔融聚丙烯端盖接触之前在其端部用亲水聚合物表面处理进行处理,由此保持在水中完整测试过滤装置的能力。 示例性的聚合物表面处理剂包括聚乙烯醇,聚乙烯亚胺,1-4丁二醇二缩水甘油醚和亚乙基胺的组合以及季胺聚表氯醇的溶液和分散体。

    FILTEREMENT INCLUDING FILTRATION MEDIA WITH MULTI-LAYER PLEAT SUPPORT
    3.
    发明申请
    FILTEREMENT INCLUDING FILTRATION MEDIA WITH MULTI-LAYER PLEAT SUPPORT 审中-公开
    过滤器,包括具有多层PLEAT支持的过滤介质

    公开(公告)号:WO2004028660B1

    公开(公告)日:2004-06-03

    申请号:PCT/US0329987

    申请日:2003-09-24

    Applicant: CUNO INC

    CPC classification number: B01D29/21 B01D63/067 B01D2201/0407 B01D2201/188

    Abstract: A filter element (12) is disclosed that includes a filtration media (18), an upstream pleat support (16) and a multi-layer downstream pleat support. The multi-layer downstream support includes a first downstream support layer (19) and a second downstream support layer (22). The first downstream support layer is in contact with the filtration media and is interposed between the filtration media and the second downstream layer. The first downstream support layer is fabricated so as to minimize points of surface contact with the filtration media, thereby enhancing fluid flow away from the filtration media. The second downstream support layer is in contact with the first downstream support layer and is fabricated so as to facilitate lateral fluid flow relative to the multi-layer downstream pleat support. The disclosed filter element may be utilized in filter cartridges of various designs to provide enhanced filtration performance, e.g., by way of increased media area and improved flow/throughput.

    Abstract translation: 公开了一种过滤元件(12),其包括过滤介质(18),上游褶裥支撑件(16)和多层下游褶裥支撑件。 多层下游支撑件包括第一下游支撑层(19)和第二下游支撑层(22)。 第一下游支撑层与过滤介质接触并置于过滤介质和第二下游层之间。 制造第一下游支撑层以最小化与过滤介质的表面接触点,从而增强流体离开过滤介质的流动。 第二下游支撑层与第一下游支撑层接触并且被制造成便于相对于多层下游褶皱支撑件的横向流体流动。 所公开的过滤元件可用于各种设计的滤芯中,以提供增强的过滤性能,例如通过增加的介质面积和改善的流量/通量。

    7.
    发明专利
    未知

    公开(公告)号:AT202003T

    公开(公告)日:2001-06-15

    申请号:AT97947621

    申请日:1997-11-21

    Applicant: CUNO INC

    Abstract: A method for retrieving excess pharmaceutical process fluid from the hold-up volume of a primary fluid filtration device. The hold-up volume is the volume of excess process fluid which accumulates in the bottom of the filter housing below the outlet opening thereof. Because it is considered valuable, the excess pharmaceutical process fluid is retrieved from the lower housing (22) via a drainage port (23) formed therein below the level of the outlet. The excess process fluid is then filtered in a supplemental filtration device (100) that is connected to the drainage port. The supplemental filtration device has a smaller volumetric capacity than the capacity of the primary fluid filtration device.

    8.
    发明专利
    未知

    公开(公告)号:BR0313035A

    公开(公告)日:2005-07-12

    申请号:BR0313035

    申请日:2003-07-24

    Applicant: CUNO INC

    Abstract: Phase inversion microporous membranes including at least two different pore size regions are provided, wherein two membrane sheets are placed, back-to-back, such that the qualifying pore zones are positioned internally within the structure. Exemplary membranes according to the present disclosure provide excellent thermal stability and retention characteristics. Methods for fabricating and using the disclosed membrane structures are also provided according to the present disclosure.

    Polymeric surface treatment of filter media

    公开(公告)号:AU2003252132A8

    公开(公告)日:2004-02-09

    申请号:AU2003252132

    申请日:2003-07-24

    Applicant: CUNO INC

    Abstract: Fluid filtration devices that include nylon membranes are provided according to the present disclosure that maintain thorough wetting of a membrane through the end cap bonding process. The fluid filtration device typically includes a pleated microporous nylon filter media and polypropylene end caps. The pleated microporous filter media is treated with hydrophilic polymeric surface treatments at the ends thereof prior to contact with molten polypropylene end caps, thereby maintaining the ability to integrity test the filtration device in water. Exemplary polymeric surface treatments include solutions and dispersions of polyvinyl alcohol, polyethyleneimine, a combination of 1-4 butanediol diglycidyl ether and ethylene amine, and a quaternary amine polyepichlorohydrin.

    10.
    发明专利
    未知

    公开(公告)号:BR9713428A

    公开(公告)日:2000-01-25

    申请号:BR9713428

    申请日:1997-11-21

    Applicant: CUNO INC

    Abstract: A method for retrieving excess pharmaceutical process fluid from the hold-up volume of a primary fluid filtration device. The hold-up volume is the volume of excess process fluid which accumulates in the bottom of the filter housing below the outlet opening thereof. Because it is considered valuable, the excess pharmaceutical process fluid is retrieved from the lower housing (22) via a drainage port (23) formed therein below the level of the outlet. The excess process fluid is then filtered in a supplemental filtration device (100) that is connected to the drainage port. The supplemental filtration device has a smaller volumetric capacity than the capacity of the primary fluid filtration device.

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