Filter Media
National Nonwovens manufactures premier filtration products for wet and dry applications. A wide array of styles are available, ranging from all-purpose to highly specialized filter fabrics.

Recent innovations include our advanced high-loft Low Density filters and new styles in our innovative "scrimless" PurusFelt® line.

All filters perform with remarkable efficiency at high permeability levels.

Filters
Filter-Focus E-News:
 Spring 2006
Fall 2007
  Current filtration products include:

Dual-Density - multi-section, long-life filter
A true dual-density filter. The first filter section is open, springy, and resilient with high denier and low density. The second filter section contrasts by being thin, stiff, rigid, and dense, with fine denier. Together, they make a high-depth-loading, long-life filter perfect for automotive carbon canisters. This material is also excellent for vacuum cleaners, furnace and air-conditioner filters, and pleated filters.

Filter Section 1:

  • Open, springy, and resilient
  • Coarse, high denier
  • Low density

Filter Section 2:

  • Thin, stiff, and rigid
  • Fine denier
  • High density

The result of combining the two sections is phenomenal!

  • Extremely long life.
  • Will not distort and will die-cut straight.
  • Exceptionally effective! example: large particles "bounce off", and carbon is prevented from moving through the multiple layers, in automotive carbon canisters. Two unique constructions provide a "true" dual-density medium.

Dual Density Product Styles: Filter 7 and T-Filter 25

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Low-Density - high loft with no latex binder
This new filter media features a high loft needlepunch nonwoven containing no latex binder that is a recyclable green product.

Product features:

  • No latex binder .
  • High loft/low weight .
  • High permeability.
  • Low pressure drop.
  • Recyclable.

Low Density Product Styles: T-Filter 29 and T-Filter 30

PurusFelt® - "scrimless" filter designs
"Pure" because it's all fiber, no scrim — PurusFelt® goes beyond all your filter medium expectations. 

Available in three unique fiber blends:

  • Filter 6 - 100% Polyester
  • T-Filter 18 - 100% Nomex
  • T-Filter 82 - 100% Polyester

Applications:

  • Air filter media: bag houses, dust collection, lawn mower filters, and pollution control.
  • Wet filter media: water, paint,  pharmaceuticals, and food.

Benefits & Features - "Pure" benefits of a mechanically interlocked, all fiber "scrimless" design include:

  • Lower elongation
  • Increased strength
  • Enhanced uniformity
  • Improved stability
  • High durability
  • Outstanding thermal stability

Filter 2 -ultimate filter for high air-flow volume
Designed for maximum air-flow volume. Ideal for lawn mower bags, vacuum bags,
desiccant bags, and off-road vehicle filtration.

Product features:

  • High-volume air filtration with low pressure drop {DeltaP}
  • Durable and strong medium capable of resisting high-impact forces
  • Washable
  • Ultrasonic sealing possible
  • Both white and black filters available

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Filter 4 - all-purpose filter
National Nonwovens' most versatile filters. This multi-purpose product provides high
permeability at an affordable price. The company works closely with customers to
engineer Filter 4 to fit specific applications, including air-intake filtration and liquid
osmosis.

Product features:

  • Extremely versatile for both wet and dry filtration
  • High permeability at an affordable price
  • Chemical-free construction - can be custom-treated
  • Engineered for individual applications

Filter 9 - high-quality liquid filtration media
A highly specialized liquid filter for exceptional throughput. Filter 9 is perfect for
top-quality coffee filtration. Premium coffee starts with an extraordinary filter.

Product features:

  • High throughput
  • Heavy, durable
  • Reusable

Filter 11 - super-effective light-weight filter
Combines two important attributes, high permeability and light weight, to create a
super-efficient filter. This filter is perfect for pleated canisters or any application where
filtering out fine particles is crucial.

Product Features:

  • Combines high permeability with light basis weight
  • Super-efficient
  • Perfect for dry applications requiring a finer denier

Filter 12 - innovative vapor neutralizing filter
Stops odors by neutralizing harmful vapors. This innovative filter is extremely effective on formaldehyde, a potential carcinogen found in hospitals and laboratories.

Product Features:

  • Formalydehyde and aldehyde vapors are chemically neutralized when air passes through filter
  • Formalin solutions are chemically neutralized and retained in medium
  • Patented fiber is durable and resists tearing, even when saturated
  • Incineration of filter is clean and efficient, with reduced threat of exposure

Filter 16 - lightweight pre-filter with enhanced efficiency
An improved lightweight filter material that is especially effective for pre-filter applications. The supported needlepunched fabric has enhanced filtering efficiency over other lightweight nonwovens. Treatments offered for this filter include both singed and glazed. Glazed products will have higher depth loading capacity compared to unsupported nonwovens. In addition to pre-filters, Filter 16 is also designed for composite components, coolant filters, and dust control.

Product Features:

  • Lightweight
  • Enhanced filter efficiency
  • High permeability
  • Low-pressure drop
  • Good stability

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T-Filter 17 - an excellent chemical resistant filter media
Made with 100% PPS fibers supported by a woven pps scrim.  Provides ptimum reinforcement with increased modulus. This filter media is ideal for applications involving exposure to continuous temperatures of 375º F or less, oxygen content of 15% or less, with sulfur compounds and/or moisture present in the atmosphere. This type of environment can be found in coal fuel boilers, waste incinerators, coal fluid power generators, and biomass incinerators.

Product Features:

  • Polyphenylene sulfide (pps) fiber has excellent chemical resistance against most acids, alkalis, and organic solvents
  • Fabric will not burn
  • Improved gamma and neutron radiation resistance over conventional synthetic fibers
  • Thermally stable for continuous exposure to 375º F

Filter 26 - UV stable for automotive interiors
This filter is ideal for automotive applications, meeting strict automotive standards for flame retardancy and U.V. stability. This specialized filter has uniform thickness and is constructed using a three-dimensional needling process that provides an extremely soft surface with excellent fiber entanglement. These innovative methods enable enhanced depth loading for superior filtration.

Product Features:

  • Meets Automotive U.V. requirements for interior cabin and FMVSS 302 standards
  • Features high depth loading capacity
  • Provides excellent moldability

SHP 1 - lightweight pre-filters and components
Engineered to play an integral role in advanced filtration technology as pre-filters and shell fabrics in conjunction with melt-blown filter medias.   This style is applicable to a variety of advanced designs, including: pleated filters, air filters, and face masks.

Product Features:

  • Maximum resiliency for maximum depth loading capacity
  • Lightweight scrim increases dimensional stability
  • Material is soft and drapable

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SHP 18 - pre-filters for unique molding applications
Engineered to play an integral role in advanced filtration technology as pre-filters and shell fabrics in conjunction with melt-blown filter medias.   This style is applicable to a variety of advanced designs, including: pleated filters, air filters, and face masks.

Product Features:

  • Nonwoven substrates increase media strength and efficiency
  • High depth-loading capacity and maximum modulus
  • Designed for unique modling capabilities

TRNP 71 - highly technical liquid-filtration media
An advanced cylinder filter for liquid-filtration media. When cartridge core applications require high-temperature curing, such as core wrapping, this is the filter medium of
choice.

Product features:

  • Ability to withstand extremely high temperatures
  • High tensile strength
  • High abrasion resistance

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VYL009 - lightweight, needlepunched pre-filter
An ultra lightweight supported product with increased loft. This needlepunched prefilter is designed as an alternative to spunbond polyester nonwovens. Engineered to provide high permeable fabrics with uniform coverage and increased strength from the scrim, and thickness for added depth loading capabilities. Use this material for pre-filter wraps and multiple layered composite components.

Product features:

  • A lightweight, high permeable fabric
  • Needlepunched alternative to spunbond pre-filters
  • Added depth loading capabilities

High Performance Filters - specialized applications
National Nonwovens works closely with partners to customize filters for specialty
applications. Engineers work quickly and effectively to provide filtration solutions for a wide array of applications.



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PurusFelt® is a registered trademark of National Nonwovens


P.O. Box 150 Easthampton MA 01027
T: 413-527-3445 F: 413-527-9570
1-800-333-3469