Polyester Surface Veil Engineered For Superior FRP Performance
Product Attributes
| Material | Fiberglass |
| Alkali Resistance | Excellent |
| Heat Resistance | Good |
| Moisture Content | ≤0.2% |
| Acid Resistance | Excellent |
| Application | Hand lay-up, RTM, Filament winding |
Product Definition
Polyester surface veil is a 100% modified polyester fiber non-woven fabric manufactured through hydro-entanglement technology. Designed as the critical surface enhancement layer for FRP composites, it forms a high-resin-permeability barrier that significantly improves corrosion resistance, surface finish, and weather durability.
Core Advantages
- Exceptional Chemical Resistance
- Withstands highly corrosive media like hydrofluoric acid (HF) (superior to glass fibers), ideal for chemical storage tanks and acid digestion chambers
- Validated by ISO 28721-3 for chemical solvent resistance.
- Rapid Resin Penetration
- Fiber-modified surface accelerates resin saturation by 30%, eliminating bubbles, white spots, and fiber print-through for uniform resin-rich surfaces
- Environmental Durability
- UV Stability: Blocks photodegradation, extending outdoor service life (e.g., fencing, wind turbine blades)
- Thermal Endurance: Continuous service at 230°C, peak tolerance at 280°C
- Operator & Process Safety
- Soft fibers prevent skin irritation vs. glass fiber splinters; excellent conformability to complex mold geometries
Global Applications
Corrosion Engineering
- HF Storage Tanks & Wastewater Liners: 50% longer lifespan than traditional materials
- Chemical Pipeline Liners: Leak-proof performance certified to ISO 28721-3.
Infrastructure & Transportation
- FRP Railings/Auto Bumpers: Mirror-like finish with impact resistance; complies with EN 45545-2 fire standards
- Mass Transit Interior Panels: Fiber-free surface ensures human-contact safety.
Renewable Energy
- Wind Blade Surface Layer: Zero chalking after 3,000 hrs QUV testing (ASTM G154)
- Desulfurizer Towers: Resists sulfide corrosion (-40°C to 230°C).
High-Precision Manufacturing
- Aerospace Components: Dimensional stability for tight-tolerance assemblies.
- Reverse Osmosis Housings: Mashes fabric patterns, enhances hydraulic pressure resistance.
Technical Specifications
| Parameter | Value Range | Test Standard |
| Weight | 20-60 g/m² (customizable up to 120 g/m²) | ISO 3374 |
| Width | 100-3600 mm (±1% tolerance) | Custom specification |
| Thickness | 0.2-0.8 mm | ISO 534 |
| Operating Temperature | -40°C ~ +230°C (peak 280°C) | ISO 3795 |
| Chemical Resistance | 98% H₂SO₄, 40% HF, NaOH ≤30% | ISO 175 |
| Resin Saturation Time | ≤15 sec (30% faster vs. glass veil) | In-house method |
| Tensile Strength | ≥35 MPa (longitudinal) | ISO 527 |
| UV Stability | Zero chalking after 3,000 hrs QUV | ASTM G154 |
Customizable weight, color (white/dyed), and pore size (10 μm/22μm/25μm).
Packaging & Traceability
- Roll Configuration
- Core: Ø76mm industrial-grade paper tube.
- Outer Protection: Full-seal waterproof stretch film + anti-vibration woven bag/custom carton.
- Palletization
- Vertical/horizontal placement on wooden pallets (max. 1.5 tons/pallet).
- Pallet labels include: Product code, specs, batch number, production date, QC ID.
- Blockchain Traceability
- QR code per roll linking to real-time QC reports and raw material origins
Storage Protocol
| Requirement | Specification |
| Environment | 15-35°C, 35%-65% RH; shaded warehouse away from heat/water sources |
| Stacking Limit | ≤3 pallet layers; avoid compression deformation |
| Post-Opening Handling | Re-seal unused rolls; consume within 48 hours |
| Shelf Life | 12 months in original packaging (post-expiry resin penetration test required) |
Why Choose Our Polyester Surface Veil?
- Process Versatility: Compatible with pultrusion, RTM, hand lay-up, vacuum infusion, filament winding
- Eco-Compliance: REACH SVHC-free, RoHS 3 certified, PFAS-free per EU 2023/707
- Performance Guarantee: 24-month warranty against manufacturing defects.
