Fact sheet from the US Environmental Protection Agency, describing the properties, characteristics and applications of paper based and nonwoven high efficiency particle air (HEPA) and ultra low penetration air (ULPA) filtration media.

Technical paper about Tris and Nmgl grafted, polyethylene coated polypropylene fibers for nonwoven filtration cloth. Authors: Akinori Jyo and others.

Scientific article about the introduction of a novel three-dimensional matrix of nonwoven fiber and functional particles, without the use of additional binders, in order to create a new filtration medium. From AQF Technologies LLC. Author: Matthew C. Middlebrooks.

Technical paper examining the filtration and electrical properties of membrane and non-membrane filter media manufactured from polyester nonwoven needlefelt, including a review of recent advances in membrane performance and test results. From W.L. Gore and Associates.

Technical paper about the development of a novel dry-scrubbing chemical filtration medium, consisting of one or more granular chemisorbent materials applied to a nonwoven fiber matrix. Authors: Christopher O. Muller and Matthew C. Middlebrooks.

Technical paper about the techniques and procedures for making a nonwoven fabric precursor and their effect on the magnitude of the electrical resistivity of active carbon nonwovens manufactured from this precursor. Authors: Romualda Cislo and others.

Technical article about a comparison of the major characteristics of polymeric membrane and nonwoven filtration media. From Du Pont de Nemours. Authors: Dr. Ernst Mayer and Jennifer Warren.

Technical paper about the development of nonwoven liquid filtration media of which thickness and pore structure are engineered by controlling fiber characteristics and arrangement for increased performance properties. From Kimberly Clark Corp. Authors: G.C. Deka and others.

Scientific paper about the application of hydrophobic hollow fiber membranes (HFM) for the treatment of water contaminated with methyl tert-butyl ether (MTBE). Authors: A. Keller and B. Bierwagen.

Technical paper describing the physical properties and filtration characteristics of hydroentangled nonwoven filter media made from splittable and expanded surface area fibers, manufactured with pulsation apparatus and elliptically formed nozzle jets. Authors: Micheal Ellison and others.

Technical paper analyzing two different liquid extrusion techniques applied to determine pore structure of nonwoven materials, and an evaluation of the results obtained. Authors: A. Jena and K. Gupta.

Technical paper reviewing the benefits of wastewater reuse for industrial and municipal applications by demonstrating how continuous microfiltration (CMF) pretreatment to reverse osmosis (RO) can reduce capital and operating costs, improve efficiency, and enable reliable operation on water resources. Authors: Bruce Durham and others.

Technical paper about the construction and performance of filter media using nanofiber in engine, gas turbine, and mining vehicle cabin air filtration systems. From Donaldson Company, Inc. Authors: Timothy Grafe and others.

Technical paper about the performance of nonwoven nanofiber filtration media in a mining vehicle air filter system. From Donaldson Company, Inc. Authors: Timothy H. Grafe and Kristine M. Graham.

Technical paper, describing the results of studies conducted to investigate the actual in-use performance of pleated HVAC filters manufactured with electret and non-electret nonwoven media, when exposed to a variety of commercial, industrial and residential environments. From Kimberly Clark Corp. Author: B. Dean Arnold.

USA. A collection of technical articles from the PMI, Inc. web site. The subjects are pore size characterization and measurement, and capillary flow porometry for nonwoven fabrics as filtration media.

Technical paper about a process for the manufacture of nanofibers, and the benefits, limitations, construction and performance of filtration systems using polymeric nanofiber media. From Donaldson Company, Inc. Authors: Kristine Graham and others.

Overview of the history, materials, media forms, characteristics, manufacturing methods, applications and markets of nonwoven fabrics for filtration media. Author: Edward C. Gregor.

Scientific article about the applications of synthetic split microfibers in nonwoven filtration media. Tables, technical specifications, and photo's. From Fiber Innovation Technology, Inc. DOC file. Authors: Jeff Dugan and Ed Homonoff.

Thesis on the determination of the effect of anisotropy in the liquid distribution of a nonwoven fabric utilizing a device which records the liquid spread. Also, an introduction of a new method to measure the intrinsic wicking properties of a nonwoven fabric. Author: Amy Konopka.

Technical paper outlining the technical properties of Du Pont's textured or apertured, and meltblown and spunbond nonwovens for liquid and ait filtration applications. Tables, diagrams and SEM photos. From Du Pont de Nemours & Co. Authors: J. Warren and others.