PTFE (Teflon®) Coated Wire Mesh

For over twenty years PTFE Applied Coatings have been working with customers to provide coatings for woven wire cloth (mesh) and have a recognised process for applying PTFE based products to enhance the performance of filtration systems, particularly for industrial cartridge filters.

The method for the application of the PTFE (Teflon®) coating has been developed and perfected to fully coat the strands of the woven mesh without filling in the apertures. Most woven mesh used for this method of filtration is either 100 or 200 mesh size, manufactured from stainless steel wire threads. See diagram right.

When surface materials are coated with PTFE, water droplets rest on the surface, without actually wetting to any significant extent, these coatings are known as hydrophobic. Surfaces which are incompatible with water exhibit a high contact angle (70º to 90º). The contact angle thus directly provides information on the interaction energy between the surface and the liquid.

PTFE (Teflon®) coatings are applied to increase the hydrophobic performance of the filter, by means of permitting fuels to pass through but inhibit the passage of water in coalescer based systems. In such systems the PTFE coated mesh can be easily cleaned during maintenance and service operations. It has been found that PTFE coated mesh filters can help to reduce operating costs and improve product quality.

Industrial applications for filters with coated mesh: