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    Fibrous filtration face mask
    1.
    发明授权
    Fibrous filtration face mask 失效
    纤维过滤面膜

    公开(公告)号：US07131442B1

    公开(公告)日：2006-11-07

    申请号：US08661834

    申请日：1996-06-11

    申请人： Joseph P. Kronzer ,  James F. Dyrud

    发明人： Joseph P. Kronzer ,  James F. Dyrud

    IPC分类号： A62B7/10

    CPC分类号： B01D39/1623 ,  A41D13/1146 ,  A62B23/025 ,  B01D2239/0216 ,  B01D2239/065 ,  B01D2239/0681 ,  B01D2239/086 ,  B01D2239/10 ,  D04H1/54

    摘要： A face mask for filtering contaminants from the air. The face mask includes a harness for securing the mask over the nose and mouth of the wearer and a nonwoven fibrous layer attached to the harness. The nonwoven fibrous layer contains at least 40 weight percent thermally bonding fibers, where at least 10 weight percent of the fibers in the nonwoven fibrous layer are bicomponent fibers. The nonwoven fibrous layer is molded in a cup-shaped configuration and has a surface fuzz value of not less than 7.5 after being subjected to a surface fuzz abrasion test.

    摘要翻译： 用于过滤空气中的污染物的面罩。 面罩包括用于将面罩固定在穿戴者的鼻子和嘴部上的线束以及附接到线束的非织造纤维层。 非织造纤维层含有至少40重量％的热粘合纤维，其中非织造纤维层中至少10重量％的纤维是双组分纤维。 非织造纤维层被模制成杯状构造，并且在进行表面绒毛磨损试验之后具有不小于7.5的表面绒毛值。

    Methods of forming fibrous filtration face masks
    2.
    发明授权
    Methods of forming fibrous filtration face masks 失效
    形成纤维过滤面罩的方法

    公开(公告)号：US5307796A

    公开(公告)日：1994-05-03

    申请号：US632964

    申请日：1990-12-20

    申请人： Joseph P. Kronzer ,  Roger J. Stumo ,  James F. Dyrud ,  Harvey J. Berg

    发明人： Joseph P. Kronzer ,  Roger J. Stumo ,  James F. Dyrud ,  Harvey J. Berg

    IPC分类号： A41D13/11 ,  A61B19/00 ,  B01D39/08 ,  B01D39/16 ,  D04H1/54 ,  A62B7/10

    CPC分类号： B01D39/1623 ,  A41D13/1146 ,  D04H1/54 ,  A62B23/025 ,  B01D2239/0216 ,  B01D2239/065 ,  B01D2239/0681 ,  B01D2239/086 ,  B01D2239/10

    摘要： A method of forming a cup-shaped, non-woven fibrous shaping layer for a filtering face mask. The method includes the steps: (a) heating a non-woven fibrous web that contains at least 40 weight percent thermally bonding fibers, where at least 10 weight percent of the fibrous material is bicomponent fibers, to a temperature at which the thermally bonding fibers, including at least one component of the bicomponent fibers, are softened; and then (b) molding the heated non-woven fibrous web, while the thermally bonding fibers and the at least cone component of the bicomponent fibers are still soft, in a mold having molding members that are at a temperature below the softening temperatures of the thermally bonding fibers, including all components of the bicomponent fibers.

    摘要翻译： 一种形成用于过滤面罩的杯形非织造纤维成形层的方法。 该方法包括以下步骤：（a）加热含有至少40重量％热粘合纤维的非织造纤维网，其中至少10重量％的纤维材料是双组分纤维，其中热粘合纤维 包括双组分纤维的至少一种组分软化; 然后（b）在具有模制构件的模具中，在热粘合纤维和双组分纤维的至少锥形组分仍然柔软的同时，（b）模制加热的无纺纤维网，其温度低于 热粘合纤维，包括双组分纤维的所有组分。

    Flat-folded personal respiratory protection devices and processes for preparing same
    3.
    发明授权
    Flat-folded personal respiratory protection devices and processes for preparing same 失效
    平折个人呼吸防护装置及其制备方法

    公开(公告)号：US06886563B2

    公开(公告)日：2005-05-03

    申请号：US10798581

    申请日：2004-03-11

    申请人： Graham J. Bostock ,  John W. Bryant ,  Desmond T. Curran ,  Christopher P. Henderson ,  Dennis L. Krueger ,  James F. Dyrud

    发明人： Graham J. Bostock ,  John W. Bryant ,  Desmond T. Curran ,  Christopher P. Henderson ,  Dennis L. Krueger ,  James F. Dyrud

    IPC分类号： A62B18/02 ,  A41D13/11 ,  A62B7/10 ,  A62B23/02

    CPC分类号： A62B23/025 ,  A41D13/11 ,  A41D13/1115

    摘要： Fold-flat personal respiratory protection devices that have a flat substantially rectangular central portion having first and second edges, at flat first member joined to the first edge of the central portion through either a fold-line, seam, weld or bond, said fold, bond, weld or seam of the first member being substantially coextensive with said first edge of said central portion, and a flat second member joined to the second edge of the central portion through either a fold-line, seam, weld or bond, the fold, bond, weld or seam of the second member being substantially coextensive with said second edge of said central portion. At least one of the central portion and first and second members are formed from filter media. The device is capable of being folded flat for storage with the first and second members being in at least partial face-to-face contact with a common surface of the central portion and, during use, is capable of forming a cup-shaped air chamber over the nose and mouth of the wearer with the unjoined edges of the central portion and first and second members adapted to contact and be secured to the nose, cheeks and chin of the wearer. The outer boundary of the unjoined edges which are adapted to contact the nose, cheeks and chin of the wearer are less than the perimeter of the device in the flat folded storage state. Also provided are process for preparing such devices.

    摘要翻译： 折叠式个人呼吸保护装置，具有平坦的大致矩形的中心部分，具有第一和第二边缘，平坦的第一部件通过折线，接缝，焊接或接合连接到中心部分的第一边缘，所述折叠部分， 所述第一构件的接合，焊缝或接缝与所述中心部分的所述第一边缘基本上共同延伸;以及平坦的第二构件，其通过折叠线，接缝，焊接或接合连接到所述中心部分的第二边缘，所述折叠 ，所述第二构件的接合，焊接或接缝与所述中心部分的所述第二边缘基本上共同延伸。 中心部分和第一和第二部件中的至少一个由过滤介质形成。 该装置能够被折叠成平坦的，用于存储，其中第一和第二构件与中心部分的共同表面至少部分地面对面接触，并且在使用期间能够形成杯形空气室 在中心部分的未接合的边缘处穿过穿着者的鼻子和嘴部，并且第一和第二构件适于接触并固定到穿着者的鼻子，脸颊和下巴。 适合接触穿戴者的鼻子，脸颊和下颚的非接合边缘的外边界小于平折折叠存储状态下的装置的周边。 还提供了用于制备这种装置的过程。

    Processes for preparing flat-folded personal respiratory protection devices
    4.
    发明授权
    Processes for preparing flat-folded personal respiratory protection devices 失效
    制作平折个人呼吸防护装置的方法

    公开(公告)号：US06715489B2

    公开(公告)日：2004-04-06

    申请号：US10247674

    申请日：2002-09-19

    申请人： Graham J. Bostock ,  John W. Bryant ,  Desmond T. Curran ,  Christopher P. Henderson ,  Dennis L. Krueger ,  James F. Dyrud

    发明人： Graham J. Bostock ,  John W. Bryant ,  Desmond T. Curran ,  Christopher P. Henderson ,  Dennis L. Krueger ,  James F. Dyrud

    IPC分类号： A62B1802

    CPC分类号： A41D13/1161 ,  A41D13/1115 ,  A41D13/1138 ,  A41D13/1184 ,  A62B23/025

    摘要： Fold-flat personal respiratory protection devices are provided. The devices have a flat central portion having first and second edges, a flat first member joined to the first edge through either a fold-line, seam, weld or bond that is substantially coextensive with the first edge, and a flat second member joined to the second edge through either a fold-line, seam, weld or bond that is substantially coextensive with the second edge. At least one of the central portion and first and second members are formed from filter media. The device is capable of being folded flat for storage with the first and second members being in at least partial face-to-face contact with a common surface of the central portion and, during use, is capable of forming a cup-shaped air chamber over the nose and mouth of the wearer.

    摘要翻译： 提供折叠式个人呼吸防护装置。 所述装置具有平坦的中心部分，其具有第一和第二边缘，平坦的第一部件通过与所述第一边缘基本共同延伸的折叠线，接缝，焊接或接合而接合到所述第一边缘，以及平坦的第二部件， 所述第二边缘通过与所述第二边缘基本共同延伸的折线，接缝，焊接或接合。 中心部分和第一和第二部件中的至少一个由过滤介质形成。 该装置能够被折叠成平坦的，用于存储，其中第一和第二构件与中心部分的共同表面至少部分地面对面接触，并且在使用期间能够形成杯形空气室 在穿着者的鼻子和嘴巴上。

    Method of making sorbent articles
    5.
    发明授权
    Method of making sorbent articles 失效
    制造吸附剂制品的方法

    公开(公告)号：US5503782A

    公开(公告)日：1996-04-02

    申请号：US179204

    申请日：1994-01-14

    申请人： James F. Dyrud ,  Thomas I. Insley ,  Daniel E. Meyer ,  Cynthia Y. Tamaki ,  Donald E. Young

    发明人： James F. Dyrud ,  Thomas I. Insley ,  Daniel E. Meyer ,  Cynthia Y. Tamaki ,  Donald E. Young

    IPC分类号： A61F13/53 ,  A61F13/15 ,  A61F13/49 ,  B01D53/14 ,  B01J20/28 ,  D01D5/24 ,  D01F6/04 ,  D04H1/00 ,  D04H1/70 ,  B29C70/28

    CPC分类号： D04H1/76 ,  D04H1/407 ,  D04H1/56 ,  Y10S428/903

    摘要： A method of making a microfibrous sorbent article is provided. The method includes the steps of a) extruding molten thermoplastic fiber forming polymer from multiple orifices in a fiber-forming die, said orifices being aligned along the face of the die; b) attenuating the fibers in a stream of hot air to form a fiber stream of microfibers; and c) collecting said microfibers on a collector having a forming surface, said surface being aligned with said die and substantially parallel to and equidistant from said die such that the fibers form a spirally wound microfibrous sorbent article which is supported on its exterior surface by said forming surface and which is drawn across said forming surface substantially parallel to said die. Also provided is a microfibrous sorbent article prepared according to the method.

    摘要翻译： 提供了制造微纤维吸附剂制品的方法。 该方法包括以下步骤：a）在纤维形成模具中从多个孔中挤出熔融的热塑性纤维形成聚合物，所述孔沿着模具的表面对齐; b）减弱热空气流中的纤维以形成纤维纤维流; 以及c）将所述微纤维收集在具有成形表面的收集​​器上，所述表面与所述模具对准，并且基本上平行于所述模具并等距离离开所述模具，使得所述纤维形成螺旋缠绕的微纤维吸附剂制品，所述吸收剂制品在其外表面上被所述 并且基本上平行于所述模具拉过所述成形表面。 还提供了根据该方法制备的微纤维吸附剂制品。