pultrusion

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pultrusion

[pu̇l′trü·zhən]
(engineering)
A process for producing continuous fibers for advanced composites which involves pulling reinforcements through tanks of thermoset resins, a preformer, and then a die, where the product is formed into its final shape.
References in periodicals archive ?
The traditional manufacturing process for pultruded polyurethane profiles requires multiple manufacturing steps and extra handling to pultrude the part and then separately coat the finished product to avoid UV degradation.
Two hurdles overcome by the company to successfully pultrude PU resins include the fast gel times of the raw materials when mixed and the tendency of the chemistry to produce internal voids in the material during gel and cure.
Coupling together Bayer's specially formulated grade of Baydur[R] PUL polyurethane and pultrusion know-how with Deceuninck's expertise to design and develop tooling, and rapidly pultrude complex shapes were keys to the success of the balcony door.
Electrical insulator bars 16 mm in diameter can be pultruded without any center cracks, Dow reports; and in the civil engineering industries, fabricators use the resin to pultrude concrete re-bars and larger profiles for use as bridge decks and girders.
To pultrude the trailer components, the group turned to Pultrall, who has been involved with Bayer MaterialScience LLC for many years and is a customer of Bayer Inc.