Apparatus for formation of pultruded fiber glass reinforced twisted article
AssigneePPG Industries, Inc.
InventorsCharles W. Killmeyer, deceased, James E. Lane, Leslie L. Taylor, Jr., Joe T. Pearson
Life of this patent
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Abstract
A system for forming twisted pultruded fiber reinforced rods is disclosed. In the system of the invention fibers are coated with a resin, drawn through a shaping die and then after at least partially curing, the rod is simultaneously twisted and pulled through the coater by opposed pulling surfaces that rotate as they pull to twist said rod.
Claims8
Apparatus for producing a fiber reinforced pultruded rod having a plurality of twisted protrusions and grooves on its surface, comprising means to coat fibers with a resin shaping means to form the coated fibers into a rod having protrusions and grooves thereon, heating means to partially cure said rod to form a solid rod, rotatable opposed surfaces engaging said rod to pull the rod through said heating means and means to rotate said opposed rotating surface around the axis of the rod continuously to impart a twist to the rod between the shaping means and the opposed surfaces as the rod is being pulled.
Dependencies are inferred from the claim text.