Glass Fiber Tapes Technical Data Sheet (TDS)
Glass Fiber Tapes are woven narrow fabrics made from continuous filament E-glass yarns. These tapes provide excellent mechanical strength, thermal insulation, electrical resistance, and chemical durability. They are widely used for pipe wrapping, electrical insulation, structural reinforcement, thermal protection, and marine/automotive applications.
Product Overview
| property | value |
|---|
| Product Form | Woven fiberglass tape, selvedge or open edge |
| Base Material | E-glass (alkali-free), optional C-glass or S-glass |
| Construction | Plain, twill or leno weave; single/double layer |
| Width Range | 10 mm to 200 mm (standard); customizable up to 300 mm |
| Thickness | 0.1 mm – 0.8 mm depending on yarn & weave |
| Surface Finish | Greige (untreated), silane-sized, PTFE coated, or heat-cleaned |
Technical Specifications
| property | value |
|---|
| Yarn Type | E-glass filament yarn (EC9, DE75, etc.) |
| Tensile Strength (Warp) | ≥ 250 N/cm |
| Tensile Strength (Weft) | ≥ 180 N/cm |
| Thermal Resistance | Continuous: 550°C, Short-term: 700°C (uncoated) |
| Electrical Insulation | Dielectric strength > 5 kV/mm |
| Water Absorption | < 0.1% |
| Shrinkage (at 300°C) | < 2% |
| Density | 2.58 g/cm³ |
| Flammability | Non-combustible (per ASTM E136) |
Performance Features
| property | value |
|---|
| Dimensional Stability | Stable under heat and tension, low elongation |
| Chemical Resistance | Resistant to acids, solvents, oils (except HF) |
| Thermal Insulation | Low thermal conductivity, ideal for lagging and sealing |
| Surface Treatment | Coatings available for resin compatibility or thermal resistance |
| Easy Handling | Flexible, clean edges, no fiber fray |
Common Applications
| property | value |
|---|
| Pipe & Duct Wrapping | Thermal insulation and fireproofing for HVAC, exhausts |
| Electrical Cable Banding | Insulation and reinforcement for high-voltage systems |
| Composites Reinforcement | Edge support, rib reinforcement in RTM, VARTM |
| Structural Wraps | Anti-crack or high-load areas in composite layups |
| Marine & Automotive | Exhaust and manifold insulation wraps |
| Fire Curtains & Seals | Heat shielding in industrial and safety applications |
Product Variants & Customization
| property | value |
|---|
| Finish Options | Silane, acrylic, PTFE, vermiculite, graphite, heat-cleaned |
| Edge Type | Woven selvedge (no fray), pinked, or heat-sealed |
| Coating Color | White (standard), grey, silver, red, or custom |
| Packaging | Rolls on paper/plastic core, individual wrapping or cartons |
| Special Grades | High-tension, low-alkali, hybrid with carbon or basalt |
Handling & Storage Guidelines
- Avoid creasing or over-bending the tape during application
- Store in a dry and ventilated area, avoid moisture or direct sunlight
- Coated versions should be kept away from sharp tools or solvents that may degrade finish
- Use PPE (gloves, mask) when handling dry tapes to prevent glass fiber irritation
- Recommended shelf life: 12–24 months, depending on coating type
Quality Standards & Testing
| property | value |
|---|
| Tensile Testing | ASTM D5035 / ISO 13934-1 |
| Thermal Performance | ASTM C411 / ISO 1871 |
| Electrical Breakdown | ASTM D149 (dielectric test) |
| Flammability Test | ASTM E84 / UL 723 / ISO 1182 |
| Dimensional Tolerance | ±3 mm in width; ±5% in weight |
| Visual Inspection | Defect-free weave, no slubs or broken ends |
Customized fiberglass tapes can be developed with various yarn weights, coatings, and weaves to meet application-specific performance needs. We also support OEM branding and custom roll dimensions. Please contact our technical team for data sheets in PDF or SDS format.
