
155Filtration Textiles
© 2008 Taylor & Francis Group, LLC
as secondary layers in the form of open-weave structures which provides
support and drainage for the primary lter fabric.
5.10 Fabric Construction and Properties
5.10.1 Woven Fabric Filters
Fabrics make up the largest component of lter media materials. They are
made from bers or laments of natural or synthetic materials and are char-
acterized by being relatively soft or oppy, lacking the rigidity of dry paper,
such that they would normally need some kind of support before they can be
used as a lter medium (Figure 5.9).
The characteristics of the woven lter fabric depends on the ty