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Lightweight Fiberglass Cloth Roll
Product Overview
Lightweight fiberglass cloth roll is manufactured using fine-diameter E-glass filaments (5–7 µm) with a low-areal-weight construction ranging from 25 g/m² to 150 g/m². This cloth is engineered for applications where weight reduction is critical, offering a density of 2.54 g/cm³ with fabric thickness from 0.05 mm to 0.25 mm. The cloth delivers tensile strength of 150–250 MPa while maintaining flexibility and conformability. The open weave structure allows for rapid resin penetration, making it suitable for thin-section laminates, surfacing veils, and cosmetic layers. The roll format provides continuous lengths for efficient processing in automated lay-up systems.
Core Advantages
Product Specifications
| Fiber Type | E-glass (5–7 µm diameter) |
| Weave Type | Plain or Leno |
| Thickness Range | 0.05 – 0.25 mm (±0.01 mm) |
| Areal Weight | 25 – 150 g/m² |
| Tensile Strength (Warp) | ≥ 200 MPa |
| Tensile Strength (Weft) | ≥ 180 MPa |
| Density | 2.54 g/cm³ |
| Permeability (Darcy) | 1.5 – 3.0 × 10⁻⁹ m² |
| Continuous Use Temperature | –60°C to +500°C |
| Roll Width | 600 mm, 900 mm, 1200 mm |
| Roll Length | 100 m, 200 m, 300 m |
Application Fields
Handling & Installation Notes
Frequently Asked Questions
Lightweight cloth offers 40–60% lower areal weight while maintaining 70–80% of the tensile strength per unit weight compared to standard 200 g/m² cloth. The strength-to-weight ratio is approximately 20% higher, making it efficient for weight-critical applications. However, absolute strength per layer is lower, requiring more plies to achieve equivalent laminate thickness.
Yes. The fine weave pattern and low profile make it suitable as a surfacing veil. When used as the outermost ply, it provides a smooth surface with reduced print-through from underlying core materials. For paint-ready surfaces, apply two plies with a 0°/90° orientation. The cloth accepts gelcoats and paints without requiring additional sanding.
For vacuum bagging, use a bleeder ply system with a perforated release film. The lightweight cloth requires lower resin flow rates compared to heavier fabrics. Apply full vacuum (0.095 MPa) and maintain for at least 30 minutes after resin flow stops. Use a flow medium on the top surface to ensure even distribution. Typical resin consumption is 80–100% of the cloth weight.
The cloth maintains mechanical integrity up to 500°C continuous. For applications above 400°C, we recommend using a high-temperature sizing compatible with the resin system. The lightweight construction provides lower thermal mass, resulting in faster thermal response. Thermal conductivity is 0.038–0.042 W/m·K.
For non-structural applications, 1–2 plies provide adequate reinforcement for cosmetic surfaces. For structural applications (e.g., panel skins), 4–8 plies are typical, producing laminate thickness of 0.4–0.8 mm. Design engineers should calculate ply count based on load requirements using the cloth's tensile strength and modulus values. A typical 4-ply laminate (2/2 twill orientation) achieves tensile strength of 180 MPa.
