E-glass Continuous Filament Mat (CFM)

E-glass Continuous Filament Mat (CFM) is a non-woven reinforcement built from continuous (NOT chopped) E-glass strands swirled into a random in-plane pattern and held together by a styrene-soluble powder binder. Because the strands are uncut, resin flowing through the mat travels along strand axes instead of jumping between short chopped fibers — giving CFM far higher in-plane permeability than chopped strand mat (CSM) and making it the standard mat reinforcement for closed-mold pultrusion, resin transfer molding (RTM), and continuous laminating lines.

Areal weights of 300 g/m² and 450 g/m² are standard, with filament tex around 240 and width 1270 mm. The mat unrolls cleanly into pultrusion creels, conforms well to flat and gently curved RTM cavities, and dissolves the binder rapidly in styrene-containing UPR/VE so the laminate behaves as continuous random reinforcement after cure. Moisture is held to ≤0.2% to prevent porosity in heated-die pultrusion.