Pultrusion Fiberglass pultrusions
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Fiberglass Crossbracing Ribs

Liberty Pultrusions - East
1575 Lebanon School Road
West Mifflin, PA 15122-3464
T: 412-466-8611
F: 412-466-8640

Liberty Pultrusions - West
T: 760-744-6371
F: 760-744-0201

The Pultrusion Process

The pultrusion process allows us to produce continuous lengths of fiber-reinforced polymer (FRP) profiled shapes. First, fiberglass in the form of continuous roving filaments, or fiber bundles, is drawn though the liquid resin, which saturates the glass reinforcement.
This combination of resin and glass is then pulled through a special die using a continuous pulling device. The mass of materials conforms to the shape of the die and is heat-set into a permanent, structurally reinforced shape. The resulting high-strength profile is cut to length -- ready for use when it leaves the pultrusion machine. Pultruded products provide manufacturers and designers with the benefits of high strength-to-weight ratios, corrosion resistance, heat resistance, dielectric properties, dimensional stability and weatherability. In the end, pultruded products are a cost effective and versatile alternative to traditional materials.
Process of Pultrusion

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