Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Convoluting or twisting means
Patent
1992-09-30
1993-08-10
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Convoluting or twisting means
264339, 425392, B29C 5302, B29C 5314
Patent
active
052343332
ABSTRACT:
A method and apparatus for twisting and/or postforming a plastic rod reinforced with continuous reinforcing fibers is described. A rod with continuous reinforcing fibers already in a helical configuration may be postformed by this method and apparatus with or without additional twist being imparted. A fiber reinforced rod with continuous longitudinally aligned unidirectional fibers may also be postformed by this method and apparatus by twisting and then postforming the rod. The reinforced plastic rod is more easily postformed if the reinforcing fibers are conformed to a helical configuration in which the number of helices in a given length of the rod is correlated to the diameter of the rod and to the degree of bend to be postformed in the rod. The method for this and the rod with the helical fibers is described.
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Bonazza Benedict R.
Rhodes, Jr. Vergil H.
Winkel John D.
Bennett Morrison
Mackey James P.
Phillips Petroleum Company
Woo Jay H.
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