The fibre reinforced sheet pile and other sections are manufactured using the pultrusion process. Pultrusion is defined as the continuous processing of raw materials by pulling resin-rich reinforcements through a heated steel die to form profiles of constant cross-section of continuous length. The raw materials include a liquid thermosetting resin mixture of polyester resin, fillers and specialised additives that are used to saturate or wet-out the continuous fibre rovings and mats that provide the longitudinal strength and multidirectional reinforcement.
The coated fibres are mechanically arranged into the required shape and pulled through the die where the gelation or hardening process is initiated to form the cured rigid profile which is then cut to the desired length.
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