Geotek, Inc.

John C Fingerson

Conrad F Fingerson

A method and apparatus for a low-cost, single-step method of in-line coating of pultrusion profiles to eliminate surface degradation of pultruded profiles due to outdoor exposure or corrosive attack. The method comprises pulling a combination of reinforcing fibers and resin through a pultrusion die to form a pultruded part, applying a coating to the pultruded part after it exits the pultrusion die and curing the coating on the coated pultruded part. The apparatus contains a pultrusion die for forming a pultruded part of a predetermined shape, a coating die with an exit area generally greater than the inlet area, a coating chamber located between the entrance and exit area of the coating die for applying a coating to the pultruded part, and a curing element for curing the coating on the pultruded part after it exits the coating die.

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Chatfield, MN, United States of America

John C Fingerson