Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Reshaping or treatment of an optical preform
Patent
1995-06-07
1997-08-19
Dixon, Merrick
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Reshaping or treatment of an optical preform
264 458, 264 453, 264135, 264275, 428323, 428332, B29C 4702
Patent
active
056585195
ABSTRACT:
An elongated, substantially rigid member suitable for use as a marine piling is formed by feeding a substantially solid plastic core into a die and continuously extruding a molten plastic into the die so that the molten plastic surrounds and bonds to the plastic core and to reinforcing bars fed into the die at positions surrounding the plastic core. The plastic core acts as a heat sink to facilitate cooling of the molten plastic and deters bending of the member while cooling.
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Roney Heinz, Civil Engineering, "Plastic Piling", vol. 63, No. 4, dated Apr. 1993, pp. 63-65.
Gould Russell J.
March Frank A.
Menge John H.
Dixon Merrick
Seaward International, Inc.
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