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Publication number: 20120152859Abstract: Filter media suitable for various applications (e.g., hydraulic) and related components, systems, and methods associated therewith are described. The filter media may include a fiber web having a mixture of glass fibers and fibers that are fibrillated. The fibrillated fibers, for example, may be formed of lyocell.Type: ApplicationFiled: December 17, 2010Publication date: June 21, 2012Applicant: Hollingsworth & Vose CompanyInventors: Juergen Battenfeld, William E. Widrig, Eszter Nofz
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Patent number: 9027765Abstract: Filter media suitable for various applications (e.g., hydraulic) and related components, systems, and methods associated therewith are described. The filter media may include a fiber web having a mixture of glass fibers and fibers that are fibrillated. The fibrillated fibers, for example, may be formed of lyocell.Type: GrantFiled: December 17, 2010Date of Patent: May 12, 2015Assignee: Hollingsworth & Vose CompanyInventors: Juergen Battenfeld, William E. Widrig, Eszter Nofz
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Publication number: 20120318754Abstract: Fine fiber products including fiber webs, as well as related assemblies, systems and methods, are described. In some embodiments, fiber webs described herein may include fine fibers and relatively low amounts of degraded polymer formed during a fiber extrusion process. The fiber webs may be used for filter media applications.Type: ApplicationFiled: June 20, 2012Publication date: December 20, 2012Applicant: Hollingsworth & Vose CompanyInventors: Stephen T. Cox, William S. Freeman, Abdoulaye Doucoure, John A. Wertz
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Publication number: 20100314333Abstract: 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: ApplicationFiled: July 7, 2009Publication date: December 16, 2010Applicant: Hollingsworth & Vose CompanyInventors: James M. Witsch, Christophe Lefaux
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Publication number: 20130341290Abstract: 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: ApplicationFiled: June 20, 2012Publication date: December 26, 2013Applicant: Hollingsworth & Vose CompanyInventors: Howard Yu, Sneha Swaminathan
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Publication number: 20150053627Abstract: Filter media having a gradient in a property and methods associated with such media are provided. In some embodiments, a filter media may have a gradient in mean pore size. The gradient in mean pore size may be across at least a portion of the thickness of the filter media. In some embodiments, the gradient can be represented by an exponential function. The exponential gradient in mean pore size may impart desirable properties to the filter media including enhanced filtration properties (e.g., relatively high dust holding capacity and efficiency), amongst other benefits. The filter media may be particularly well-suited for applications that involve filtering liquids (e.g., hydraulics, fuel, lube, water), though the media may also be used in other applications.Type: ApplicationFiled: August 26, 2013Publication date: February 26, 2015Applicant: Hollingsworth & Vose CompanyInventors: MAXIM SILIN, SUDHAKAR JAGANATHAN
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Publication number: 20110147320Abstract: Articles such as filter media, which include dendrimers and/or other components, are provided. The filter media may further include a water repellant (e.g., a fluorinated species) to impart desirable properties to the media such as high water repellency. The filter media may also have a high efficiency as a function of pressure drop (i.e., high gamma values). In some embodiments, the filter media includes a fiber web which may be formed of various components such as glass fibers. The fiber web can also include additional components such as synthetic fibers, binder components, as well as other additives. The media may be incorporated into a variety of filter element products.Type: ApplicationFiled: January 22, 2010Publication date: June 23, 2011Applicant: Hollingsworth & Vose CompanyInventors: David F. Sealey, Stuart Williams
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Patent number: 8951420Abstract: Filter media, including those suitable for hydraulic applications, and related components, systems, and methods associated therewith are provided. The filter media described herein may include two or more layers, at least one of the layers having a relatively high percentage of microglass fibers. Additionally, the filter media may be designed such that the ratio of average fiber diameters between two layers is relatively small, which can lead to a relatively low resistance ratio between the layers. The filter media has desirable properties including high dirt holding capacity with low basis weight and a low resistance to fluid flow. The media may be incorporated into a variety of filter element products including hydraulic filters.Type: GrantFiled: April 3, 2009Date of Patent: February 10, 2015Assignee: Hollingsworth & Vose CompanyInventors: Milind Godsay, Randall Keisler