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National Nonwovens Filtration e-newsletter

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	Filtration Challenge 4: Coolant Filters
	Ron Aljoe:  Manufacturing Representative
	Filtration Hot Topic: Benefits of PPS fibers
	Trending In The Industry:  Updating with new technology
	Current Events: Filtering Out Mosquitoes

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Below is Part 4 in National Nonwovens’ continuing Filtration Challenges series,
which discusses solutions to the industry’s difficult challenges.

Filtration Challenge 4: Design coolant filters for filtering cooling and cutting oil(s) contamination.

A challenging condition in the Filtration Industry is developing uniform, stable, highly permeable, lightweight materials for multiple environments such as machine shops, milling, and recycling.  Especially difficult is designing coolant filters for metal fragments in hot oil.  High permeability from 100 cfm’s to 600 cfm’s are required to allow different viscosities of oil to flow through the material.  High loft is essential to prevent blending of the filter and keeping the filter distributed through out the medium.  A gradient density is preferred to ensure that a wide particle size range can be filtered.

Solution:  National Nonwovens offers several styles of filtration materials that meet these demanding challenges.  All are constructed using our innovative needling process and are lightweight, stable and have a high degree of permeability. National Nonwovens can also apply a finish coating on one or both surfaces to enhance the product performance of these styles.  We also are capable of constructing layered, gradient fabrics for this application.  The styles are:  FIL003, FIL015, and FIL016.

FIL003

	Chemically bonded rayon/polyester nonwoven will withstand even the most difficult separations
	FIL003 has excellent strength
	Designed for single or multiple layer filters

 FIL015 and FIL016

	100% polyester glazed nonwoven designed for a single layer application
	Available in both singed or glazed finishes
	Features excellent loft with a low pressure drop
	Provides multiple filtration functions in one superiorly engineered fabric

SPECIFICATIONS

Construction		Needlepunched Nonwoven
Fiber		90% Rayon 10% Polyester	100%  Polyester
Style		FIL003	FIL015		FIL016
Attributes		Chemically Bonded, Pressed	Pressed & Singed	Glazed	Singed	Glazed	Singed	Glazed
Width (inch)		56	Up to 90	50	56	56	56	56
Weight (oz/yd2)		4.5	3.0	3.0	3.5	3.5	4.2	4.2
Thickness (inch)		.020 - .028	.025 - .035	.015 - .025	.055 - .075	.015 - .025	.060 - .090	.020 - .030
Permeability (cfm)		100—200	250 - 350	200 - 350	350 - 450	200 - 350	300 - 400	150 - 300
Mullen Burst (lb)				100 min	100 min	100 min	125 min	125 min
Tensile Strength (lb)  *2x6  **4x6	MD CMD		30 min** 50 min**	25 min* 30 min*	15 min* 35 min*	15 min* 35 min*	20 min* 50 min*	20 min* 50 min*
Elongation @ (%) 10 lbs	MD CMD		35 mean 35 mean	5 mean 20 mean	20 mean 25 mean	20 mean 25 mean	55 mean 20 mean	55 mean 20 mean

	Thermally stable to 400º F.  Good for continuous operating temperatures to 375º F.
	Excellent gamma and neutron radiation resistance
	Non flammable
	Excellent electrical insulating capacity, even at high temperatures  - either wet or dry

National Nonwovens’ product style: TFIL17 is made with 100% PPS fibers supported by a woven pps scrim, providing optimum 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.  Please contact our technical staff for your unique solutions at 800-333-3469 or Email Ron Aljoe.  

 

Trending in the industry:  Replacing Outdated   Technology with Moldable Filters

Filter manufactures are recognizing the benefits of replacing out-dated, existing materials with recent technical advances.  The results are more cost effective products that are processing friendly with enhanced efficiency and performance.  Utilizing moldable filter media for these situations is one answer.

Moldable filter media enhances the performance of the entire filter.  This technology can also be designed for chemical resistance for items such as acids, alkalis, and organic solvents. 

We will continue our nearly 100 year history of engineering innovative nonwoven materials for the benefit of our customers.  If you want to determine if moldable filtration materials can improve your current products, contact us at 800-333-3469.

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Current Events: Filtration Wish List....
	Mosquito Filters

Mosquitoes have become much more than infuriating pests.  They are now a cause for serious health concerns in many regions.  They are responsible for some very unpleasant diseases, including West Nile Virus.  Controlling these blood thirsty insects with spay has created a completely separate problem.  Critics contend that spray often does more harm than good, subjecting non-target species, including humans, to hazardous chemicals such as potent neurotoxins.  A study from the United States Environmental Protection Agency found there could be a problem with DEET, a chemical used in most bug sprays, especially with children.  In addition, more studies now show that sprays may not significantly impact the mosquitoes.  Bug zappers are also proving to be largely ineffective, often killing more “good” bugs than bad.

Filtering Out Mosquitoes?
The preferred method of mosquito protection may come in the form of a mosquito filter in the near future.   A durable and lightweight nonwoven filter can be used as a substrate to prevent the passage of mosquitoes when applied to apparel or screens.  What is exciting about this idea is how various chemistries can be engineered into the nonwoven screen to increase its repellency.  Is this a great idea or wishful thinking?  Although the answer in still uncertain, what is certain are the endless possibilities of nonwovens!

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Market Trends and competition are creating a more demanding environment requiring more innovation and technology. The key to engineering new technology is the commitment of material suppliers to generate new ideas that can be transformed into new products providing increased performance over traditional materials. The new emerging needlepunch technology reflects our commitment to the filtration market. At National Nonwovens, we will continue to manage new technology to bridge today’s products and technology to meet the future market demands.

 

Coming up next issue….
In the next Filter-Focus, we will discuss high volume air filtration media

Please email us your challenges