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    Bonded nonwoven fibrous webs comprising softenable oriented semicrystalline polymeric fibers and apparatus and methods for preparing such webs
    3.
    发明授权
    Bonded nonwoven fibrous webs comprising softenable oriented semicrystalline polymeric fibers and apparatus and methods for preparing such webs 有权

    公开(公告)号：US09139940B2

    公开(公告)日：2015-09-22

    申请号：US11461201

    申请日：2006-07-31

    申请人： Michael R. Berrigan ,  John D. Stelter ,  Pamela A. Percha ,  Andrew R. Fox ,  William T. Fay

    发明人： Michael R. Berrigan ,  John D. Stelter ,  Pamela A. Percha ,  Andrew R. Fox ,  William T. Fay

    IPC分类号： D04H3/14 ,  D04H3/16 ,  D04H3/00

    CPC分类号： D04H3/16 ,  D04H3/00 ,  Y10T428/2481 ,  Y10T428/249953 ,  Y10T428/2913 ,  Y10T428/2969 ,  Y10T442/3325 ,  Y10T442/60 ,  Y10T442/614 ,  Y10T442/619 ,  Y10T442/626 ,  Y10T442/641 ,  Y10T442/68 ,  Y10T442/69

    摘要： A method for making a bonded nonwoven fibrous web comprising 1) providing a nonwoven fibrous web that comprises oriented semicrystalline polymeric fibers, and 2) subjecting the web to a controlled heating and quenching operation that includes a) forcefully passing through the web a fluid heated to at least the onset melting temperature of said polymeric material for a time too short to wholly melt the fibers, and b) immediately quenching the web by forcefully passing through the web a fluid at a temperature at least 50° C. less than the Nominal Melting Point of the material of the fibers. The fibers of the treated web generally have i) an amorphous-characterized phase that exhibits repeatable softening (making the fibers softenable) and ii) a crystallite-characterized phase that reinforces the fiber structure during softening of the amorphous-characterized phase, whereby the fibers may be autogenously bonded while retaining orientation and fiber structure. Apparatus for carrying out the method can comprise 1) a conveyor for conveying a web to be treated, 2) a heater mounted adjacent a first side of the conveyor and comprising a) a chamber having a wall that faces the web, b) one or more conduits through which a heated gas can be introduced into the chamber under pressure and c) a slot in said chamber wall through which heated gas flows from the chamber onto a web on the conveyor, 3) a source of quenching gas downweb from the heater on the first side of the conveyor, the quenching gas having a temperature substantially less than that of the heated gas, 4) gas-withdrawal mean disposed on the second side of the conveyor opposite from the heater, the gas-withdrawal means having a portion in alignment with the slot so as to draw heated gas from the slot through the web and also a portion downweb from the slot in alignment with the source of quenching gas so as to draw the quenching gas through the web to quench the web. Flow restrictor means is preferably disposed on the second side of the conveyor in the path of at least one of the heated gas and the quenching gas so as to even the distribution of the gas through the web.

    SORBENT LOADED WEBS FOR GRAVITY FILTRATION
    5.
    发明申请
    SORBENT LOADED WEBS FOR GRAVITY FILTRATION 审中-公开
    SORBENT负载重量过滤器WEBS FOR GRAVITY FILTRATION

    公开(公告)号：US20120193282A1

    公开(公告)日：2012-08-02

    申请号：US13263389

    申请日：2010-04-07

    申请人： Scot G. Wolf ,  William J. Feil, III ,  Bradley W. Eaton ,  Stephen Sanocki ,  Andrew R. Fox

    发明人： Scot G. Wolf ,  William J. Feil, III ,  Bradley W. Eaton ,  Stephen Sanocki ,  Andrew R. Fox

    IPC分类号： B01D29/05 ,  B01D39/16 ,  B01D27/04

    CPC分类号： B01D39/1623 ,  B01J20/28028

    摘要： A filter media is disclosed comprising a carrier and a web collected on the carrier. The web comprises hydrophilic polymeric meltblown fibers and a plurality of sorbent particles enmeshed in the hydrophilic polymeric meltblown fibers. The carrier comprises a porous sheet and has a carrier basis weight. The web has a web basis weight. The hydrophilic polymeric melt-blown fibers comprise at least 3% of the web basis weight and the plurality of sorbent particles comprise at most 97% of the web basis weight.

    摘要翻译： 公开了一种过滤介质，其包括载体和收集在载体上的网。 网状物包括亲水聚合物熔喷纤维和包含在亲水聚合物熔喷纤维中的多个吸附剂颗粒。 载体包括多孔片材并具有载体基重。 纸幅具有纸张基重。 亲水性聚合物熔喷纤维包含至少3％的纤维网基重，并且多个吸附剂颗粒占网片基重的至多97％。

    FIBROUS WEB COMPRISING MICROFIBERS DISPERSED AMONG BONDED MELTSPUN FIBERS
    7.
    发明申请
    FIBROUS WEB COMPRISING MICROFIBERS DISPERSED AMONG BONDED MELTSPUN FIBERS 有权
    包含粘结纤维素纤维的微纤维纤维网

    公开(公告)号：US20100258967A1

    公开(公告)日：2010-10-14

    申请号：US12823863

    申请日：2010-06-25

    申请人： Andrew R. Fox ,  John D. Stelter ,  Timothy J. Lindquist

    发明人： Andrew R. Fox ,  John D. Stelter ,  Timothy J. Lindquist

    IPC分类号： D04H3/14

    CPC分类号： D04H5/06 ,  B01D39/163 ,  D04H1/56 ,  D04H3/03 ,  D04H3/16 ,  Y10T442/614 ,  Y10T442/619 ,  Y10T442/625 ,  Y10T442/626 ,  Y10T442/68 ,  Y10T442/681 ,  Y10T442/69 ,  Y10T442/696

    摘要： A nonwoven fibrous web comprising a matrix of continuous meltspun fibers bonded to a coherent self-sustaining form, and separately prepared microfibers dispersed among the meltspun fibers. The microfibers may have median diameters less than one or two micrometers. A method for preparing such a nonwoven fibrous web comprises establishing a stream of continuous oriented meltspun fibers having a longitudinal axis, establishing a stream of meltblown microfibers that exit a meltblowing die at a point near the stream of meltspun fibers, the meltblown stream being aimed to merge with the meltspun stream and having a longitudinal axis that forms an angle of between 0 and 90 degrees to the longitudinal axis of the meltspun stream, capturing the meltblown fibers in the stream of meltspun fibers, and collecting the merged stream as a web on a collector spaced near the intersection point of the meltspun and meltblown streams.

    摘要翻译： 一种非织造纤维网，其包含结合到相干自持形式的连续熔融纤维基质，以及分散在熔融纤维之间的单独制备的微纤维。 微纤维的中值粒径可以小于1或2微米。 制备这种非织造纤维网的方法包括建立具有纵向轴线的连续定向熔融纤维流，建立熔融微纤维流，其在熔融纤维流附近的点离开熔喷模头，熔喷流瞄准 与熔融物流融合并且具有与熔融物流的纵向轴线成0度到90度之间的角度的纵向轴线，捕获熔融纤维流中的熔喷纤维，并将合并的流体作为纤维网收集在 收集器在熔融物和熔喷流的交点附近间隔开。

    PLEATED FILTER WITH BIMODAL MONOLAYER MONOCOMPONENT MEDIA
    8.
    发明申请
    PLEATED FILTER WITH BIMODAL MONOLAYER MONOCOMPONENT MEDIA 有权
    带双向单声道单声道介质的滤色片

    公开(公告)号：US20100229516A1

    公开(公告)日：2010-09-16

    申请号：US12789053

    申请日：2010-05-27

    申请人： Andrew R. Fox ,  John D. Stelter ,  Seyed A. Angadjivand ,  Timothy J. Lindquist ,  John M. Brandner ,  James E. Springett

    发明人： Andrew R. Fox ,  John D. Stelter ,  Seyed A. Angadjivand ,  Timothy J. Lindquist ,  John M. Brandner ,  James E. Springett

    IPC分类号： B01D46/52 ,  B01D39/16

    CPC分类号： B01D46/521 ,  B01D39/163 ,  B01D2239/064 ,  D04H3/14 ,  D04H3/16 ,  Y10T156/1015 ,  Y10T156/108 ,  Y10T442/68

    摘要： A pleated filter is made from a monocomponent monolayer nonwoven web containing a bimodal mass fraction/fiber size mixture of intermingled larger size and smaller size continuous monocomponent polymeric fibers of the same polymeric composition. Rows of pleats are formed in the nonwoven web, and the pleated web is cut to a desired size and shape to provide a filter element containing a self-supporting porous monocomponent monolayer matrix of fibers bonded to one another at least some points of fiber intersection and having an average initial submicron efficiency of at least 15% at a 1.52 meters/sec face velocity. The filter element is deformation resistant without requiring stiffening layers, bicomponent fibers or other reinforcing measures in the filter media layer.

    摘要翻译： 褶皱过滤器由单组分单层非织造纤维网制成，其含有相同聚合物组合物的混合较大尺寸和较小尺寸连续单组分聚合物纤维的双峰质量分数/纤维尺寸混合物。 褶皱线形成在非织造纤维网中，并且打褶的纤维网被切割成所需的尺寸和形状，以提供过滤元件，其包含在纤维交叉点的至少某些点处彼此粘合的纤维的自支撑多孔单组分单层基质 并且以1.52米/秒的面速度具有至少15％的平均初始亚微米效率。 过滤元件是抗变形的，不需要过滤介质层中的加强层，双组分纤维或其他增强措施。

    Molded monocomponent monolayer respirator
    10.
    发明授权
    Molded monocomponent monolayer respirator 有权
    成型单组分单层呼吸器

    公开(公告)号：US08512434B2

    公开(公告)日：2013-08-20

    申请号：US13019500

    申请日：2011-02-02

    申请人： John D. Stelter ,  Andrew R. Fox ,  Seyed A. Angadjivand

    发明人： John D. Stelter ,  Andrew R. Fox ,  Seyed A. Angadjivand

    IPC分类号： B01D39/14

    CPC分类号： D04H3/16 ,  A41D13/1146 ,  D04H3/14 ,  Y10T428/1362 ,  Y10T428/249921

    摘要： A molded respirator is made from a monocomponent monolayer nonwoven web of continuous charged monocomponent meltspun partially crystalline and partially amorphous oriented fibers of the same polymeric composition that have been bonded to form a coherent and handleable web which further may be softened while retaining orientation and fiber structure. The respirator is a cup-shaped porous monocomponent monolayer matrix whose matrix fibers are bonded to one another at at least some points of fiber intersection. The matrix has a King Stiffness greater than 1 N. The respirator may be formed without requiring stiffening layers, bicomponent fibers, or other reinforcement in the filter media layer.

    摘要翻译： 模制的呼吸器由相同聚合物组合物的连续带电单组分熔融部分结晶和部分无定形纤维的单组分单层非织造纤维网制成，所述纤维已经被结合以形成相干和可处理的纤维网，其进一步可以在保持定向和纤维结构的同时被软化 。 呼吸器是一种杯状多孔单组分单层基质，其基质纤维在纤维交叉点的至少一些点处彼此结合。 该矩阵的刚度大于1N。可以形成呼吸器，而不需要过滤介质层中的加强层，双组分纤维或其他增强材料。