E-glass Unidirectional Fabric 1200 g/m²

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Key Features

  • Non-crimp 0° UD delivers full directional modulus
  • Epoxy-compatible silane for infusion and prepreg
  • Stitched construction infuses cleanly in thick spar cap laminates
  • 1270 mm standard width matches major wind blade tooling
  • Low binding weft keeps off-axis weight under 50 g/m²

E-glass Unidirectional Fabric 1200 g/m² is a non-crimp stitched (NCF) 0° UD reinforcement built from 2400 tex E-glass roving and held in alignment by a lightweight polyester binding weft of less than 50 g/m². The 0° areal weight is 1200 g/m² (±5%), with standard width 1270 mm and roll length 50 m. Because the load-bearing fibers run perfectly straight — no over-and-under weaving — the fabric delivers full directional tensile and compressive modulus, avoiding the 10–15% strength penalty typical of woven roving.

The silane sizing is epoxy-compatible and tuned for vacuum infusion and prepreg processes used in wind blade and structural pultrusion lines. The stitched construction wets out cleanly, opens up under resin flow, and stacks reliably into thick (>30 mm) spar cap laminates without dry spots. Moisture is held to ≤0.1% to prevent infusion-cycle void formation in thick-section parts.

Specifications

ParameterValue
Width1270 mm standard
SizingEpoxy-compatible silane
Moisture≤0.1%
Base Yarn2400 tex E-glass
Roll Length50 m
Weft Weight<50 g/m² (binding weft only)
ConstructionNon-crimp stitched UD (NCF)
Areal Weight (0°)1200 g/m² (±5%)

Applications

Wind blade spar cap (primary 0° load-bearing layer)Wind blade trailing edge UD reinforcementPultruded structural beams and FRP profilesSports equipment cores (ski / hockey stick / vaulting pole)FRP bridge deck UD plies

FAQ

Woven roving has crimped fibers (each yarn weaves over and under), which costs roughly 10–15% of in-plane tensile and compressive strength versus a straight fiber. UD fabric is non-crimped (stitched, not woven) and delivers the full strength and modulus of the 0° fiber. Use UD wherever the load direction is well-defined — spar caps, pultruded beams, bridge deck UD plies. Use woven roving for general-purpose hand-layup laminates where multi-directional handling and isotropic-ish properties matter more than peak directional strength.

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