solar panel frames made from glass‑reinforced polyurethane

A photovoltaic GRPU frame is a composite material made from glass fibers and polyurethane resin, produced using a pultrusion process. It serves as an alternative to traditional aluminum frames for solar panels.

Key features:

• Exceptional corrosion resistance– Performs well in harsh environments such as coastal areas or high‑humidity regions, outperforming aluminum and helping reduce the risk of potential‑induced degradation (PID).

• Built‑in electrical insulation– As a non‑metallic material, it eliminates concerns about grounding and current leakage, simplifying installation.

• Lightweight yet strong– With a density roughly one‑third that of aluminum, it offers high tensile strength and excellent bending resistance.

• Lower carbon footprint– Manufacturing requires far less energy than aluminum production, aligning with the sustainability goals of the solar industry.

A key piece of equipment used in making these frames is the pultrusion injection machine, which ensures precise resin impregnation and controlled curing during the forming process.