This manufacturing process converts reinforced fibers and liquid resin into a fiber-reinforced plastic using a pulling method, as opposed to a pushing method used in an extrusion process.
The first step in the pultrusion process is to saturate the fibers by pulling them through a resin impregnator containing a bath made of epoxy, polyurethane, polyester, and/or vinyl ester.
Often, fillers and additives such as colorant, fire inhibitors, and UV retardants are blended into the bath to enhance the finished product.
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