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  • FIBRILLATED FIBERS FOR LIQUID FILTRATION MEDIA
    Publication number: 20170128892
    Abstract: Fiber webs which are used in filter media are described herein. In some embodiments, the fiber webs include fibrillated fibers and optionally non-fibrillated fibers, amongst other optional components (e.g., binder resin). In some embodiments, the fiber webs include limited amounts of, or no, glass fiber. The respective characteristics and amounts of the fibrillated fibers are selected to impart desirable properties including mechanical properties and filtration properties (e.g., dust holding capacity and efficiency), amongst other benefits.
    Type: Application
    Filed: October 18, 2016
    Publication date: May 11, 2017
    Applicant: Hollingsworth & Vose Company
    Inventors: Howard Yu, Sneha Swaminathan
  • FIBRILLATED FIBERS FOR LIQUID FILTRATION MEDIA
    Publication number: 20200346172
    Abstract: Fiber webs which are used in filter media are described herein. In some embodiments, the fiber webs include fibrillated fibers and optionally non-fibrillated fibers, amongst other optional components (e.g., binder resin). In some embodiments, the fiber webs include limited amounts of, or no, glass fiber. The respective characteristics and amounts of the fibrillated fibers are selected to impart desirable properties including mechanical properties and filtration properties (e.g., dust holding capacity and efficiency), amongst other benefits.
    Type: Application
    Filed: July 15, 2020
    Publication date: November 5, 2020
    Applicant: Hollingsworth & Vose Company
    Inventors: Howard Yu, Sneha Swaminathan
  • FLUTABLE FIBER WEBS WITH LOW SURFACE ELECTRICAL RESISTIVITY FOR FILTRATION
    Publication number: 20100314333
    Abstract: The fiber webs described herein may be incorporated into filter media and filter elements. The fiber webs may exhibit a low surface electrical resistivity. The fiber webs may also be sufficiently flexible and/or deformable so that they may be processed to include a series of waves (also known as flutes) that extend along the cross-machine direction.
    Type: Application
    Filed: July 7, 2009
    Publication date: December 16, 2010
    Applicant: Hollingsworth & Vose Company
    Inventors: James M. Witsch, Christophe Lefaux
  • FIBRILLATED FIBERS FOR LIQUID FILTRATION MEDIA
    Publication number: 20200238226
    Abstract: Fiber webs which are used in filter media are described herein. In some embodiments, the fiber webs include fibrillated fibers and optionally non-fibrillated fibers, amongst other optional components (e.g., binder resin). In some embodiments, the fiber webs include limited amounts of, or no, glass fiber. The respective characteristics and amounts of the fibrillated fibers are selected to impart desirable properties including mechanical properties and filtration properties (e.g., dust holding capacity and efficiency), amongst other benefits.
    Type: Application
    Filed: April 20, 2020
    Publication date: July 30, 2020
    Applicant: Hollingsworth & Vose Company
    Inventors: Howard Yu, Sneha Swaminathan
  • MULTI-REGION BATTERY SEPARATORS
    Publication number: 20180026247
    Abstract: Disclosed is a battery separator, comprising two fiber regions comprising glass fibers, and a middle fiber region disposed between them comprising larger average diameter fibers and specified amounts of silica, or fine fibers, or both; and processes for making the separator. Also disclosed is a battery separator, comprising a fiber region and either one or two silica-containing region(s) adjacent thereto, each of the regions containing a specified amount of silica; and processes for making the separator. Such separators are useful, e.g., in lead-acid batteries.
    Type: Application
    Filed: July 6, 2017
    Publication date: January 25, 2018
    Applicant: Hollingsworth & Vose Company
    Inventors: Akshay Ashirgade, Zhiping Jiang
  • Melt blown composite HEPA filter media and vacuum bag
    Patent number: 6524360
    Abstract: An electret filter media includes an additive or mixtures thereof that enhance the charge stability of the media. The filter media achieves acceptable alpha values for a range of filtration challenges without significant decay in alpha values over time. Preferred charge additives include fatty acid amides and mixtures thereof.
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: February 25, 2003
    Assignee: Hollingsworth & Vose Company
    Inventors: Stephen T. Cox, David T. Healey
  • Waved filter media and elements
    Patent number: 7883562
    Abstract: Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: February 8, 2011
    Assignee: Hollingsworth & Vose Company
    Inventors: David Thomas Healey, Richard E. Gahan
  • GLASS COMPOSITIONS WITH LEACHABLE METAL OXIDES AND IONS
    Publication number: 20120070727
    Abstract: The disclosure describes compositions and methods for producing a change in the voltage at which hydrogen gas is produced in a lead acid battery. The compositions and methods relate to producing a concentration of one or more metal ions in the lead acid battery electrolyte. The compositions include glass based compositions that are included as part of various battery components, such as the battery separator, pasting paper, additives to battery paste, etc.
    Type: Application
    Filed: September 21, 2011
    Publication date: March 22, 2012
    Applicant: HOLLINGSWORTH & VOSE COMPANY
    Inventors: John Wertz, Christopher Campion, Yuri Vulfson, Rene Gargan, Nicolas Clement, Randall Keisler
  • THERMAL INSULATION MATERIALS FOR BATTERIES
    Publication number: 20230369681
    Abstract: Thermal insulation materials for batteries are generally described. The thermal insulation materials described herein have a number of advantages. For example, in some embodiments, the thermal insulation materials have desirable thermal properties, such as low thermal conductivity and/or high thermal stability. As another example, in some embodiments, the thermal insulation materials described herein have desirable structural properties, such as having a relatively low thickness, and/or beneficial mechanical properties. The thermal insulation materials described herein may also have a combination of desirable thermal and structural properties.
    Type: Application
    Filed: May 13, 2022
    Publication date: November 16, 2023
    Applicant: Hollingsworth & Vose Company
    Inventor: Zhiping Jiang
  • Fiber webs including synthetic fibers
    Patent number: 8882876
    Abstract: Filter media suitable for various applications and related components, systems, and methods associated therewith are described. The filter media may include a fiber web having a mixture comprising non-fibrillated synthetic fibers and fibrillated fibers, such as lyocell. The fiber web may also include multi-component fibers (e.g., bi-component fibers). In some embodiments, glass fibers are not incorporated into the fiber web.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: November 11, 2014
    Assignee: Hollingsworth & Vose Company
    Inventors: Juergen Battenfeld, Eszter Nofz, Nicolas Clement
  • Charge stabilized electret filter media
    Patent number: 5645627
    Abstract: An electret filter media includes an additive or mixtures thereof that enhance the charge stability of the media. The filter media achieves acceptable alpha values for a range of filtration challenges without significant decay in alpha values over time. Preferred charge additives include fatty acid amides, oleophobic fluorochemical surfactants, and mixtures thereof.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: July 8, 1997
    Assignee: Hollingsworth & Vose Company
    Inventors: Norman Lifshutz, Richard E. Gahan, Graham C. Stevens
  • FILTER MEDIA WITH IMPROVED CONDUCTIVITY
    Publication number: 20110265312
    Abstract: Filter media are provided having improved conductivity to enhance filtration efficiency and/or dissipate static charge, and methods for making the same. In one exemplary embodiment, the filter media can include a filtration substrate, and at least one conductive coating disposed on at least a portion of the filtration substrate. In use, the conductive coating is coupled to an energy source and it is effective to emit ions when energy is delivered thereto to increase the efficiency of the filtration substrate and/or to dissipate or eliminate static charge generated during filtration.
    Type: Application
    Filed: May 9, 2011
    Publication date: November 3, 2011
    Applicant: Hollingsworth & Vose Company
    Inventors: Wai M. Choi, Karin N. Soper
  • MULTI-REGION BATTERY SEPARATORS
    Publication number: 20170170442
    Abstract: Disclosed is a battery separator, comprising two fiber regions comprising glass fibers, and a middle fiber region disposed between them comprising larger average diameter fibers and specified amounts of silica, or fine fibers, or both; and processes for making the separator. Also disclosed is a battery separator, comprising a fiber region and either one or two silica-containing region(s) adjacent thereto, each of the regions containing a specified amount of silica; and processes for making the separator. Such separators are useful, e.g., in lead-acid batteries.
    Type: Application
    Filed: February 8, 2017
    Publication date: June 15, 2017
    Applicant: Hollingsworth & Vose Company
    Inventors: Akshay Ashirgade, Zhiping Jiang
  • MULTI-LAYERED FILTER MEDIA
    Publication number: 20180353884
    Abstract: Fiber webs that may be used as filter media are provided. In some embodiments, the filter media may include multiple layers. Each layer may be designed to have separate functions in the filter media. For example, a first layer may be provided for improving dust holding capacity, a second layer for improving efficiency, and a third layer for providing support and strength to the media. By designing the layers to have separate functions, each layer may be optimized to enhance its function without negatively impacting the performance of another layer of the media.
    Type: Application
    Filed: August 22, 2018
    Publication date: December 13, 2018
    Applicant: Hollingsworth & Vose Company
    Inventors: Máté Nagy, Sven Siegle
  • Filter media with improved conductivity
    Patent number: 9192942
    Abstract: Filter media are provided having improved conductivity to enhance filtration efficiency and/or dissipate static charge, and methods for making the same. In one exemplary embodiment, the filter media can include a filtration substrate, and at least one conductive coating disposed on at least a portion of the filtration substrate. In use, the conductive coating is coupled to an energy source and it is effective to emit ions when energy is delivered thereto to increase the efficiency of the filtration substrate and/or to dissipate or eliminate static charge generated during filtration.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: November 24, 2015
    Assignee: Hollingsworth & Vose Company
    Inventors: Wai Ming Choi, Karin N. Soper
  • MULTI-REGION BATTERY SEPARATORS
    Publication number: 20170092917
    Abstract: Disclosed is a battery separator, comprising two fiber regions comprising glass fibers, and a middle fiber region disposed between them comprising larger average diameter fibers and specified amounts of silica, or fine fibers, or both; and processes for making the separator. Also disclosed is a battery separator, comprising a fiber region and either one or two silica-containing region(s) adjacent thereto, each of the regions containing a specified amount of silica; and processes for making the separator. Such separators are useful, e.g., in lead-acid batteries.
    Type: Application
    Filed: December 14, 2016
    Publication date: March 30, 2017
    Applicant: Hollingsworth & Vose Company
    Inventors: Akshay Ashirgade, Zhiping Jiang
  • MULTI-LAYERED FILTER MEDIA
    Publication number: 20160051919
    Abstract: Fiber webs that may be used as filter media are provided. In some embodiments, the filter media may include multiple layers. Each layer may be designed to have separate functions in the filter media. For example, a first layer may be provided for improving dust holding capacity, a second layer for improving efficiency, and a third layer for providing support and strength to the media. By designing the layers to have separate functions, each layer may be optimized to enhance its function without negatively impacting the performance of another layer of the media.
    Type: Application
    Filed: August 31, 2015
    Publication date: February 25, 2016
    Applicant: Hollingsworth & Vose Company
    Inventors: Máté Nagy, Sven Siegle
  • Disk lining material
    Patent number: 5455109
    Abstract: A floppy disk liner is formed of one or more latex bonded non-woven fibers. The fibers forming the liner may be formed from a cellulosic material, a thermoplastic material, or a combination of cellulosic and thermoplastic materials. At least one side of the liner has a plurality of indentations that do not entirely penetrate the liner. The indentations may occupy a total of not less than about 15% of the surface area of the liner.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: October 3, 1995
    Assignee: Hollingsworth & Vose Company
    Inventors: John C. Atkinson, Thomas A. Dindinger
  • FIBRILLATED FIBERS FOR LIQUID FILTRATION MEDIA
    Publication number: 20130341290
    Abstract: Fiber webs which are used in filter media are described herein. In some embodiments, the fiber webs include fibrillated fibers and optionally non-fibrillated fibers, amongst other optional components (e.g., binder resin). In some embodiments, the fiber webs include limited amounts of, or no, glass fiber. The respective characteristics and amounts of the fibrillated fibers are selected to impart desirable properties including mechanical properties and filtration properties (e.g., dust holding capacity and efficiency), amongst other benefits.
    Type: Application
    Filed: June 20, 2012
    Publication date: December 26, 2013
    Applicant: Hollingsworth & Vose Company
    Inventors: Howard Yu, Sneha Swaminathan
  • MULTI-REGION BATTERY SEPARATORS
    Publication number: 20160164058
    Abstract: Disclosed is a battery separator, comprising two fiber regions comprising glass fibers, and a middle fiber region disposed between them comprising larger average diameter fibers and specified amounts of silica, or fine fibers, or both; and processes for making the separator. Also disclosed is a battery separator, comprising a fiber region and either one or two silica-containing region(s) adjacent thereto, each of the regions containing a specified amount of silica; and processes for making the separator. Such separators are useful, e.g., in lead-acid batteries.
    Type: Application
    Filed: February 9, 2016
    Publication date: June 9, 2016
    Applicant: Hollingsworth & Vose Company
    Inventors: Akshay Ashirgade, Zhiping Jiang
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