Clogging

Clogging (also called fouling or blockage) occurs when particles accumulate on the filter medium and block its pores or openings. Solid particles adhere to the mesh, reducing or completely obstructing the flow through the screen or filter. This phenomenon can develop gradually, causing the filter or screen performance to decline over time.

In filtration technology, clogging leads to increased differential pressure and decreased filtration efficiency; eventually, the filter must be cleaned or replaced. Various measures are used to prevent or delay clogging, such as larger filter areas, multi-stage filtration systems (pre-filters), regular backflushing, or vibration assistance. Understanding the particle size distribution helps in selecting a filter medium that is less prone to clogging.

In architectural applications, clogging is rarely an issue but can reduce transparency in fine-mesh facade fabrics due to dust buildup—occasional cleaning is recommended in such cases.