PolyKLEAN™ Filter Cartridges 

Advancing depth filtration through technological innovation 

PolyKLEAN filters, the product of CUNO's new Rigid Extrusion Bonded technology (REBel™), are patent pending all-polypropylene depth filter cartridges offering premium features  including: 

• consistent particle removal efficiencies throughout the filter's life, 
• increased surface area for extended filter life, and 
• low initial pressure drop for enhanced flow 

The unique PolyKLEAN filter manufacturing process combines the superior process control with the quality assurance enabled by an ISO 9001 certified quality system to provide consistent product performance.   The filter's extended service life results in fewer filter change-outs while its enhanced flow characteristics can typically reduce the number of filters required to achieve a given flow rate.
The combined premium features of PolyKLEAN filters can
significantly reduce total filtration cost. 

PolyKLEAN Filter Construction 

The REBel™  technology facilitates the extrusion of polypropylene fibers that are used to manufacture the PolyKLEAN rigid filter cartridge.  The CUNO exclusive manufacturing process provides a high degree of fiber-to-fiber thermal bonding, without the use of binders, to produce a rigid, core-less, filter structure.   This filter structure: 

• Does not unload contaminants with increasing differential pressure like typical meltblown filters, 
• allows grooves to be machined into the upstream surface, without tearing or melting the filter structure, providing more than double the effective surface area, and 
• exhibits exceptionally low differential pressure for a given filter rating. 

Consistent filtration throughout the service life of a depth-style filter depends on how well the filter’s structure tolerates fluctuations in operating conditions - including contaminant loading and differential pressure.  Flexible structures, such as those found in meltblown and string-wound filters, tend to compress and change porosity with increased pressure, while rigid structures do not (Photo 1).  Compression can result in short filter life because the pores collapse and ultimately close. 

 PolyKLEAN Filter Applications