Surfacing veils serve as essential components in the pultrusion process, playing a critical role in enhancing the performance and properties of pultruded profiles. Pultrusion, characterized by its dynamic nature, involves pulling reinforced fibers through a resin bath and a heated die to create composite components with a constant profile. The incorporation of a surfacing veil is integral to imparting a wide range of desirable properties to the surface of the pultruded profile.

The correct selection of a surfacing veil can yield numerous benefits for pultruded components, including:

High-quality surface finish: A surfacing veil ensures a smooth and visually appealing surface, enhancing the overall aesthetics of the finished product.

Reduced reinforcement print through: By minimizing the visibility of underlying reinforcement fibers, a surfacing veil helps achieve a more uniform and consistent surface appearance.

Elimination of surface penetration: Preventing the penetration of reinforcing fibers into the surface helps maintain dimensional stability and surface integrity.

Improved corrosion resistance: The addition of a surfacing veil enhances the profile’s resistance to corrosion, making it suitable for harsh environmental conditions.

Resistance to UV discolouration and degradation: Surfacing veils protect against UV-induced damage, preserving the profile’s appearance and structural integrity over time.

Surface conductivity: Certain surfacing veils offer antistatic properties, crucial for applications where static dissipation is required.

Improved wear and impact resistance: Enhanced durability and resilience against wear and impact are achieved through the incorporation of a surfacing veil.

In addition to these benefits, synthetic surfacing veils contribute to improving the pultrusion process itself by:

Reducing die wear: The use of surfacing veils minimizes wear on the pultrusion die, thereby prolonging its lifespan and reducing maintenance requirements.

Reducing pulling forces: Surfacing veils help lower the forces required to pull the reinforced fibers through the die, leading to more efficient processing.

Increasing line speeds: By improving resin flow and wet-out characteristics, surfacing veils enable faster production speeds, enhancing overall productivity.

The range of spunlaced non-woven products encompasses various options tailored to specific application requirements, including:

White/black polyester-based synthetic veils for general-purpose GRP pultrusions.

Polyester-based synthetic veils with customized conductivity levels for applications necessitating antistatic properties.

Para-aramid veils for applications requiring enhanced impact and wear resistance.

Pre-ox and phenolic fiber-based veils for applications demanding superior fire resistance.

Furthermore, surfacing veils with isotropic properties provide significant hoop strength to pultruded profiles such as tubes, “L” sections, and “U” channels, enhancing structural integrity.

These spunlaced surfacing veils are available in a variety of base weights and can be pre-slit to customer-specified widths and lengths or provided as full rolls for customer slitting.

For further information, individuals are encouraged to contact Dymriton Composites or visit their website at www.dymriton.com.