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    Fluid filtration articles and methods of making and using the same
    3.
    发明授权
    Fluid filtration articles and methods of making and using the same 有权
    流体过滤制品及其制造和使用方法

    公开(公告)号：US08512569B2

    公开(公告)日：2013-08-20

    申请号：US12810451

    申请日：2008-12-15

    申请人： Bradley W. Eaton ,  Michael R. Berrigan ,  William J. Feil, III

    发明人： Bradley W. Eaton ,  Michael R. Berrigan ,  William J. Feil, III

    IPC分类号： B01D61/00 ,  B01D29/46 ,  B01D29/07 ,  D04H1/00 ,  D04H1/56

    CPC分类号： B01D39/04 ,  B01D39/1623 ,  B01D2239/0407 ,  B01D2239/0618 ,  B01D2239/0636 ,  B01D2239/065 ,  B01D2239/0654 ,  B01D2239/1233 ,  C02F1/003 ,  C02F1/283 ,  C02F2001/425 ,  Y10T442/626 ,  Y10T442/68 ,  Y10T442/699

    摘要： Fluid filtration articles, including composite nonwoven fibrous webs, and methods of making and using such articles as gas or liquid filtration elements. The articles include a population of coarse microfibers having a population median diameter of at least 1 micrometer (μm) formed as a first layer, and a population of fine fibers having a population median diameter less than 10 μm formed as a second layer adjoining the first layer. At least one of the fiber populations may be oriented. In one implementation, the coarse microfibers and fine fibers are polymeric, the coarse microfibers have a population median diameter of at least 10 μm, and the fine fibers have a population median diameter less than 10 μm. In another implementation, the population of fine fibers has a population median diameter less than 1 μm. Optionally, one or both of the first and second layers may include particulates.

    摘要翻译： 流体过滤制品，包括复合非织造纤维网，以及制造和使用这些物品如气体或液体过滤元件的方法。 所述制品包括具有形成为第一层的群体中值直径为至少1微米（mum）的粗微纤维群体，并且具有小于10um的群体中值直径的细纤维群体形成为邻接第一层的第二层 层。 至少一个纤维种群可以定向。 在一个实施方案中，粗微纤维和细纤维是聚合物的，粗微纤维的群体中值直径至少为10um，细纤维的群体中值直径小于10um。 在另一个实施方式中，细纤维群体的群体中值直径小于1um。 任选地，第一层和第二层中的一个或两个可以包括微粒。

    FLUID FILTRATION ARTICLES AND METHODS OF MAKING AND USING THE SAME
    4.
    发明申请
    FLUID FILTRATION ARTICLES AND METHODS OF MAKING AND USING THE SAME 有权
    流体过滤制品及其制备方法和使用方法

    公开(公告)号：US20100282682A1

    公开(公告)日：2010-11-11

    申请号：US12810451

    申请日：2008-12-15

    申请人： Bradley W. Eaton ,  Michael R. Berrigan ,  William J. Feil, III

    发明人： Bradley W. Eaton ,  Michael R. Berrigan ,  William J. Feil, III

    IPC分类号： B01D39/16 ,  B01J20/28 ,  B01D29/00 ,  B01J47/00 ,  D04H1/56

    CPC分类号： B01D39/04 ,  B01D39/1623 ,  B01D2239/0407 ,  B01D2239/0618 ,  B01D2239/0636 ,  B01D2239/065 ,  B01D2239/0654 ,  B01D2239/1233 ,  C02F1/003 ,  C02F1/283 ,  C02F2001/425 ,  Y10T442/626 ,  Y10T442/68 ,  Y10T442/699

    摘要： Fluid filtration articles, including composite nonwoven fibrous webs, and methods of making and using such articles as gas or liquid filtration elements. The articles include a population of coarse microfibers having a population median diameter of at least 1 micrometer (μm) formed as a first layer, and a population of fine fibers having a population median diameter less than 10 μm formed as a second layer adjoining the first layer. At least one of the fiber populations may be oriented. In one implementation, the coarse microfibers and fine fibers are polymeric, the coarse microfibers have a population median diameter of at least 10 μm, and the fine fibers have a population median diameter less than 10 μm. In another implementation, the population of fine fibers has a population median diameter less than 1 μm. Optionally, one or both of the first and second layers may include particulates.

    摘要翻译： 流体过滤制品，包括复合非织造纤维网，以及制造和使用这些物品如气体或液体过滤元件的方法。 制品包括形成为第一层的人口中值直径为至少1微米（μm）的粗微纤维群体，以及形成为邻接第一层的第二层的总体中值直径小于10μm的细纤维群 层。 至少一个纤维种群可以定向。 在一个实施方案中，粗微纤维和细纤维是聚合物，粗微纤维具有至少10μm的群体中值直径，并且细纤维的群体中值直径小于10μm。 在另一个实施方式中，细纤维群体的群体中值直径小于1μm。 任选地，第一层和第二层中的一个或两个可以包括微粒。

    PATTERNED SPUNBOND FIBROUS WEBS AND METHODS OF MAKING AND USING THE SAME
    5.
    发明申请
    PATTERNED SPUNBOND FIBROUS WEBS AND METHODS OF MAKING AND USING THE SAME 审中-公开
    图案SPUNBOND FIBROUS WEBS及其制作和使用方法

    公开(公告)号：US20110250378A1

    公开(公告)日：2011-10-13

    申请号：US13140448

    申请日：2009-12-10

    申请人： Bradley W. Eaton ,  Michael R. Berrigan ,  John D. Stelter ,  Timothy J. Diekmann

    发明人： Bradley W. Eaton ,  Michael R. Berrigan ,  John D. Stelter ,  Timothy J. Diekmann

    IPC分类号： B32B3/06 ,  D04H5/00 ,  B32B5/00 ,  D04H3/16

    CPC分类号： D04H3/16 ,  D04H3/07 ,  D04H3/14 ,  Y10T428/24008 ,  Y10T442/608 ,  Y10T442/681

    摘要： Patterned spunbond fibrous webs include a population of spunbond filaments captured in an identifiable pattern corresponding to a patterned collector surface and bonded together without the use of an adhesive prior to removal from the collector surface. The webs may exhibit a high degree of filament orientation and/or a gradient of filament density in one or more directions determined by the patterned collector surface. Methods of making patterned spunbond fibrous webs, and articles including patterned spunbond fibrous webs made according to the methods, are also disclosed. In exemplary applications, the webs may be used in gas filtration articles, liquid filtration articles, sound absorption articles, surface cleaning articles, cellular growth support articles, drug delivery articles, personal hygiene articles, or wound dressing articles.

    摘要翻译： 图案化的纺粘纤维网包括以对应于图案化收集器表面的可识别图案捕获的纺粘长丝群，并且在从收集器表面移除之前不使用粘合剂结合在一起。 纤维网可以在由图案化的收集器表面确定的一个或多个方向上显示高度的长丝取向和/或长丝密度的梯度。 还公开了制造图案化纺粘纤维网的方法和包括根据方法制造的图案化纺粘纤维网的制品。 在示例性应用中，网可用于气体过滤制品，液体过滤制品，吸声制品，表面清洁制品，细胞生长支持制品，药物递送制品，个人卫生制品或伤口敷料制品中。

    Nonwoven elastic fibrous webs and methods for making them
    6.
    发明授权
    Nonwoven elastic fibrous webs and methods for making them 有权
    非织造弹性纤维网及其制造方法

    公开(公告)号：US07744807B2

    公开(公告)日：2010-06-29

    申请号：US11462817

    申请日：2006-08-07

    申请人： Michael R. Berrigan ,  Anne N. De Rovere ,  Bradley W. Eaton ,  Brandy S. Nolan ,  Troy K. Ista ,  Timothy J. Lindquist

    发明人： Michael R. Berrigan ,  Anne N. De Rovere ,  Bradley W. Eaton ,  Brandy S. Nolan ,  Troy K. Ista ,  Timothy J. Lindquist

    IPC分类号： B28B3/20

    CPC分类号： D04H3/14 ,  D01D5/0985 ,  D01F6/04 ,  D01F6/06 ,  D01F6/42 ,  D01F6/60 ,  D01F6/62 ,  D01F6/70 ,  D04H3/00 ,  D04H3/08 ,  Y10T442/601 ,  Y10T442/602 ,  Y10T442/68 ,  Y10T442/681 ,  Y10T442/689 ,  Y10T442/69 ,  Y10T442/697

    摘要： A coherent nonwoven fibrous web comprises directly formed elastic fibers that have a molecular orientation sufficient to provide a birefringence number of at least 1×10−5 and preferably at least 1×10−2. The web can be made by a method that comprises a) extruding filaments of elastic-fiber-forming material; b) directing the filaments through a processing chamber in which gaseous currents apply a longitudinal stress to the filaments that attenuates and draws the filaments; c) maintaining the filaments at their orienting temperature while the filaments are under attenuating and drawing stress for a sufficient time for molecules within the filaments to become oriented along the length of the filaments; d) cooling the filaments to their orientation-locking temperature while the filaments are under attenuating and drawing stress and further cooling the filaments to a solidified fiber form; and e) collecting the solidified fibers as a fibrous nonwoven web. In a preferred aspect, the method includes the further step of annealing the collected fibers by exposing them to a temperature that is above their shrinking temperature but less than their relaxation temperature, and preferably bonding the fibers after (or before) the annealing step. Dimensionally stable webs comprising elastic oriented fibers are obtained.

    摘要翻译： 相干非织造纤维网包括直接形成的弹性纤维，其具有足以提供至少1×10 -5，优选至少1×10 -2的双折射数的分子取向。 纤维网可以通过以下方法制成：a）挤出成形弹性纤维材料的长丝; b）引导细丝通过处理室，其中气流对长丝施加纵向应力，该长丝应力衰减并拉伸长丝; c）将长丝保持在它们的定向温度，同时长丝处于衰减和拉伸应力足够长的时间，使细丝内的分子变得沿着长丝的长度取向; d）当细丝处于衰减和拉伸应力下并将细丝进一步冷却至固化的纤维形式时，将长丝冷却至定向锁定温度; 和e）收集作为纤维非织造纤维网的固化纤维。 在一个优选的方面，该方法包括通过将收集的纤维暴露于高于其收缩温度但小于其松弛温度的温度并优选在退火步骤之后（或之前）粘结纤维来退火所收集的纤维的另外步骤。 获得包含弹性取向纤维的尺寸稳定的纤维网。

    Bonded nonwoven fibrous webs comprising softenable oriented semicrystalline polymeric fibers and apparatus and methods for preparing such webs
    7.
    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.

    Pleated filter with monolayer monocomponent meltspun media
    9.
    发明授权
    Pleated filter with monolayer monocomponent meltspun media 有权
    褶皱过滤器与单层单组分meltspun介质

    公开(公告)号：US08506669B2

    公开(公告)日：2013-08-13

    申请号：US13085848

    申请日：2011-04-13

    申请人： Andrew R. Fox ,  John D. Stelter ,  Seyed A. Angadjivand ,  William T. Fay ,  Michael R. Berrigan ,  Douglas C. Sundet

    发明人： Andrew R. Fox ,  John D. Stelter ,  Seyed A. Angadjivand ,  William T. Fay ,  Michael R. Berrigan ,  Douglas C. Sundet

    IPC分类号： B01D39/02

    CPC分类号： B01D46/521 ,  B01D39/163 ,  D04H3/005 ,  D04H3/14 ,  D04H3/16 ,  Y10T156/1015

    摘要： A pleated filter is made from a monocomponent monolayer nonwoven web of continuous monocomponent meltspun partially crystalline and partially amorphous oriented fibers of the same polymeric composition that are bonded to form a coherent and handleable web having a Gurley Stiffness of at least 100 mg and which further may be softened while retaining orientation and fiber structure. Rows of pleats are formed in the nonwoven web, and the web is cut to a desired size and shape to provide a pleated 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, adhesive or other reinforcement in the filter media layer.

    摘要翻译： 打褶过滤器由相同聚合物组合物的连续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，所述纤维被结合以形成具有至少100mg的古利刚度的相干和可处理的纤维网，并且还可以 在保持取向和纤维结构的同时软化。 褶皱线形成在非织造纤维网中，并且将幅材切割成所需的尺寸和形状，以提供褶皱过滤元件，其包含纤维的至少一些点彼此结合的纤维的自支撑多孔单组分单层基质， 在1.52米/秒的面速下具有至少15％的平均初始亚微米效率。 过滤元件是抗变形的，而不需要过滤介质层中的加强层，双组分纤维，粘合剂或其他增强材料。