Filtration and separation

Nonwoven polyester balls mimic moss to filter water

1 April 2014

Fibalon - a filtration media based on recycled polyester (PES) fibres for treating water in domestic swimming pools, spas and aquaria, as well as breweries - has won a nomination for an Index14 Excell

Excellence in nonwovens to be rewarded

1 April 2014

The Index14 Excellence in the Nonwovens and Related Industries awards will be made by EDANA of Brussels, Belgium, on 8 April 2014, in recognition of commercially available products that have launched

Commercial-scale production of nanofibres for high-efficiency filter media

1 December 2013

Nanofibre-based materials capable of highly efficient filtration across media experiencing only a low drop in pressure were revealed by FibeRio Technology Corp of McAllen, Texas, USA, at the Filtratio

Speciality viscose fibres developed for a variety of applications

1 November 2013

Kelheim Fibres GmbH of Kelheim, Germany, has been addressing how to improve and control precisely the properties of filters by the addition of speciality viscose fibres.

Pad for medical diagnostics

1 November 2013

Liquid filters used for laboratory work and diagnostics in the medical and healthcare industries can now use a pretreated conjugate release pad introduced by Ahlstrom of Helsinki, Finland.

Hollow-fibre membranes help to harvest algae for biofuels

1 January 2013

Pall Corp is actively promoting a membrane-separation technology based on hollow fibres for the processing of the algal biomasses that are being grown in the search for alternatives to fossil fuels.

Meltblown line for high-efficiency pleated filter media

1 December 2012

Unique nonwoven structures for pleated filter media are being produced on Sandler's latest meltblown production line in Schwarzenbach/Saale, Germany.

Expanded polyetheretherketone mesh for fuel cell

1 December 2012

A mesh fabric made from polyetheretherketone (PEEK) polymer is the latest addition to the PolyGrid range of filter materials intended for use in the harsh environments encountered in fuel cells.

Thermoplastic media suitable for use at high temperatures

1 November 2012

Donaldson Co Inc of Bloomington, Minnesota, USA, says it has found a way to make thermally bonded filtration media based on webs of thermoplastic, rather than glass, fibres that can still be used in h

Biosoluble glass fibres for safer media

1 August 2012

To protect the health of humans exposed to fragments of glass fibre broken off from filter media, Hollingsworth & Vose of East Walpole, Massachusetts, USA, is developing glass compositions that ar

Ahlstrom launches heavy-duty filter media for automobile engines

1 August 2012

A range of heavy-duty media (XAir) for the air filters of automobile engines has been added to the portfolio of Ahlstrom of Helsinki, Finland.

Anisotropic web gives good compromise between filtration and mechanical properties

1 May 2012

A melt-blown nonwoven web with highly aligned fibres makes a self-supporting pleated structure that resists deformation and is good as a filter element, according to its US developer.

Wet-lay nonwoven for self supporting pleated media

1 May 2012

A nonwoven made using a mixture of glass, crimped polymer and cellulose fibres creates a pleated filter media with good dust-holding capacity, according to Johns Manville of Littleton, Colorado, USA.

Felts for bag filters

1 May 2011

Belarus-based Rue Spa Khimvolokno will launch several new products at Techtextil (Frankfurt, Germany, 24-26 May 2011; Hall 4.1 B42):

Aramids for hot-gas applications

1 March 2011

Kermel is introducing fibres and resins developed especially for high-temperature industrial applications, including hot-gas filtration, at Filtech 2011 in Wiesbaden, Germany (22-24 March).

Electrified nanostructures and silver nanowires combine to make cheap water filters for developing world

1 October 2010

Dipping plain cotton cloth in a solution of silver nanowires and carbon nanotubes quickly creates a medium for a cheap filter that could easily be used to purify water in the developing world, accordi

Wavy surfaces help to improve performance of filter bags

1 October 2010

Hollingsworth & Vose Co of East Walpole, Massachusetts, USA, has developed a meltblown filter media with a wavy surface, which it calls Nanowave, claiming this has an increased surface area and me

Electrospun fibres formed as webs to filter fossil fuels

1 September 2010

Electrospinning can create nonwoven layers of fibres of fluoropolymer suitable for filter media, and especially the separation of water from fossil fuels, claims Donaldson Co Inc of Minneapolis, Minne

Cheaper and better microfibre felts for dust separation

1 March 2010

A Brazilian company claims its nonwoven made from a fluoropolymer film that is split into fibrils and then entangled makes an improved filter felt.

Donaldson extends range of substrates for expanded polytetra - fluoroethylene membranes

1 May 2009

Following the launch of its latest expanded polytetrafluoroethylene (ePTFE) membrane, called Tetratex Extreme, in September 2008, Donaldson Membranes has now increased the range of substrates to which

Acrylic fibres improve bag filters

1 March 2009

DuPont has patented a bag filter design that uses a blend of meta-aramid (m-aramid) and acrylic fibres to enhance the retention of particles.

Patterned, hydroentangled media

1 October 2008

Filter media based on patterned, hydroentangled nonwovens are the subject of US Patent 7 381 669.

Fibres for use in ion-exchange media

1 May 2008

Japanese workers have developed fibres that contain embedded particles of an ion-exchange resin and are designed specifically for use in filter media.

Silver fibre with activated carbon

1 March 2008

Purification Products Limited from Shipley,UK, has added a material to its portfolio that combines a silver-coated fibre with activated carbon powder.

Polycomponent extrusion for tobacco smoke filtration

1 January 2008

Acetate Products Ltd of Spondon, UK, has developed a coextrusion process for making acetate-based fibres that are effective in cigarette filters.

Two filtration media products from Hollings worth&Vose

1 December 2007

Hollingsworth &Vose - a leading global provider of nonwovens and technical papers based in EastWalpole, Massachusetts,USA - has introduced two products that became commercially available in the fo

Electret resists ageing at high temepratures

1 October 2007

Researchers at 3M in the USA have developed an electret that they claim is resistant to charge degradation even when exposed to high temperatures for prolonged periods.

Filters to make cigarettes safer

1 February 2006

A continuous process for combining fine, adsorbent particles with shaped microfibres leads to the creation of media suitable for a range of applications including cigarette filters.

Nanoparticles protect against chemicals and biological agents

1 July 2005

Gentex Corp of Livonia, Michigan, USA, has patented a form of protection incorporating reactive and adsorptive components in a multi-fibre protective filter.

Safer and more comfortable masks

1 July 2005

3M Innovative Properties Co of St Paul, Minnesota, USA, claims to have improved the design of facemasks.

Sandwich filter

1 February 2005

US Patent 6 649 547 describes a sandwich laminate filter medium developed by Kimberly-Clark International Inc.

Activated carbon fibres for removal of pathogens from liquids

1 February 2005

Procter & Gamble has developed a process for forming an activated carbon fibre filter for removing contaminants such as viruses from liquids.

Electret that holds its charge

1 January 2005

US-based Kimberly-Clark Worldwide Inc reports that it has invented a better electret material for use in air filtration systems.

Filter tubes made continuously

1 October 2004

Continuous production of tubular nonwoven filter fabrics is possible using a method developed by Total Filter Technology Inc of North Chelmsford, Massachusetts, USA.

Stable electrets

1 May 2004

Kimberly-Clark Worldwide Inc has patented a stable electret polymeric for filter media.

Drum filtration fabric

1 April 2004

A method of making what is described as a "shrink" fabric for use on drum filters is revealed in US Patent 6 658 709.

Gas filtration membranes with high selectivity

1 September 2003

A hollow fibre membrane with superior selectivity for use in gas separation is the subject of US Patent 6 521 025.

Finer fibre filters

1 May 2003

A nonwoven based on fine fibres is the basis of a refined filter media developed by Japan Vilene Co Ltd of Tokyo.

Rapid transport of liquids

1 May 2003

Bundles of specially designed fibres can transport liquids rapidly in products such as diapers, according to USPatent 6 497 955.

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