Filament

A filament is a single, continuous strand of material used to produce technical fabrics. In filtration, polymeric monofilaments (PET, PA, PP, PPS, PEEK) and metallic wires are woven into meshes that define aperture, open area and surface finish. Monofilaments provide smooth, low‑fuzz surfaces and precise, stable openings with excellent cleanability; multifilament yarns add drape and internal surface but can trap fines and shed fibres. Key parameters for filaments include linear density (tex/decitex or denier), diameter tolerance, modulus and thermal class. Higher dtex raises stiffness and abrasion resistance but reduces open area for a given mesh count; smaller diameters enhance permeability at the cost of robustness. Heat‑setting locks the weave and stabilises geometry under tension and temperature. Surface treatments can tune wettability (hydrophilic/oleophobic) and fouling behaviour. Clear procurement data—polymer or alloy grade, diameter or dtex, weave and finishing—ensure that the delivered fabric achieves the specified cut‑off, permeability and lifetime in continuous duty.