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Beat dust challenges in laser & plasma cutting, welding and thermal spray

December 06, 2013
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Camfil APC HemiPleat eXtreme dust collector filterWhen it comes to the kind of wear associated with pulse-cleaning, these nano-fiber filters offer higher efficiencies, greater durability and better resistance, its makers say. The result is extended filter life with operating and energy cost less than typical with industrial cartridge dust collectors.

Air-filter effectiveness is commonly measured by a minimum efficiency reporting value, or MERV rating, based on a scale issued in 1987 by ASHRAE, the American Society of Heating, Refrigerating and Air-Conditioning Engineers.

This nano-fiber filter delivers MERV 15 efficiency — said to be higher than the base media ratings of competitive nano-fiber products. Also available is a high-efficiency MERV 16 eXtreme media that delivers tested efficiency of 99.999% on 0.5 micron and larger particles by weight, says Jonesboro, Ark.-based Camfil Air Pollution Control.

Developers say a proprietary tri-layered technology starts with two fine-pored nano-fiber layers acting as a pre-filter to the base media, capturing most dust at the surface before imbedding in the filter. The base material, then, has larger pore sizes than standard cellulose media — reducing pressure drop while allowing a superior efficiency layer.

The coating is in fact so thick and durable that it is visible to the eye.

The filters deliver long-term low-pressure drop on difficult dust challenges such as laser and plasma cutting, welding and thermal spray. The filter’s open-pleat design delivers better cartridge airflow, further enhancing performance.
 

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