Woven fabrics, filtration textiles

The majority of filtration textiles are based on synthetic fibres, although some are made from natural fibres. Purchas (1996) noted the confusions that arise due to the multiplicity of synthetic fibres, which is further compounded by many different trade names. Out of this confusion he was able to define five convenient categories of filtration textiles woven fabrics, needlefelts, bonded media, stretched film media and composites. 

The suppleness and strength of glass and ceramic fibers formed by sol-gel methods allow refractory fabrics to be woven using conventional textile processes. Applications for refractory textiles include high temperature particle filtration (where resistance to corrosive gases such as sulfuric acid is important), furnace belts, flame curtains, gaskets, and cables. 

Based on the potential of variation during their manufacture, lyocell fibers can be processed into fabrics as staple fibers or as filament yarns in traditional processes. Lyocell fabrics such as wovens, nonwovens, technical textiles, or even papers may differ in their handle and look. The degree of fibrillation influences properties such as air permeability, filtration capability, and so forth (Burger et al, 1995). 

Whilst this amount covers all filtration media, the textile fabrics used for the filter media have worldwide sales of more than US 3 billion. Woven filter fabrics made from both multifilaments and monofilaments have dominated the filtration market for both wet and dry applications. However, the recent developments in nonwoven technology have allowed the process to gain market share due to cost, disposal, and production advantages. ... 

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