Filter Media:

The Micrex Process can be used to enhance the utility and value of nonwoven substrates (wet laid, spunbond, spunlace, composites), papers and aramids utilized in filtration by:  

• Increasing surface area.  A crepe pattern or pleating effect is a traditional use for wet creping technology for paper.  Micrex can impart these same characteristics on a range of substrates which before could not be processed – and at significantly lower cost.  Increased surface area translates into improved filter performance.  Further, these Microcreped substrates can subsequently be pleated for two levels of surface area increase.
  
  
  Spun bond polypropylene Microcreped for increased surface area

• Increasing bulk.  Microcreping traditionally delivers increased bulk.  An industry standard polypropylene spunbond when compacted 15% will more than double in thickness.  This increase in bulk means increased dust holding capability on a per square unit basis.
  
  
• Adding extensibility, conformance or stretch to a filter media.  For example -- being able to shake extensible media utilized in a caking application.

• In fact, some materials are ill-suited for Microcreping to begin with.  Spunlace constructions on the other hand perform particularly well.  See our technical note – TEK 116 Substrate Design for more information about material selection.
  
  
• Microcreping can in many cases make a substrate more open.  One useful technique is to utilize a substrate which in an uncreped state may not meet the requirements of a particular application, and through processing obtains the desired attributes.