What is a fiberglass composite product?

Pultrusion is the process used to produce continuous lengths of strong, fiberglass composite products having a constant cross section. Products manufactured using this technology include window framing material , rods, structural shapes, beams, channels, pipe, tubing etc.

The manufacturing process works as follows: Continuous strands of fiberglass rovings and fiberglass mats are impregnated with resin, then drawn through a steel die which sets the shape of the stock. A portion of the die is heated to initiate the cure. The end product is a Thermoset Fiberglass Composite. Very high strengths are possible due to high glass concentration and orientation of fiberglass rovings and mats parallel and perpendicular to the length of the material being drawn through the die.

Thermoset - Heat is generally used to cause a chemical reaction which sets the shape of the part permanently. Once the materials are cured they cannot be reformed: the process is irreversible.

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