Patent ID: 6171423
Filing Date: 2001-01-09
Classification: B29C,B29K,B29L,F17C

Abstract:
A process of making a composite vessel comprising the steps of:A) preforming a thermoplastic shell for the vessel, which thermoplastic shell has at least one opening for access to the interior thereof;B) extruding a generally circular cross section of a fluid parison of thermoplastic material into the interior of the thermoplastic shell through the at least one opening therein;C) in a mold, applying at least one force which tends to urge the fluid parison toward the interior walls of the thermoplastic shell such that the fluid parison imparts sufficient heat to the thermoplastic shell to render the thermoplastic shell fluid;D) continuing step C) until the thermoplastic shell and the fluid parison consolidate and the thermoplastic shell flows to the inner surface of the mold to form a composite vessel;E) cooling the composite vessel until it is solidified; andF) removing the formed composite vessel from the mold.