Conduits and method of forming
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United States of America Patent
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Issued Date -
Jul 27, 2006
app pub date -
Sep 11, 2003
filing date -
Sep 11, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of continuously forming heated conduit (17) includes performing a tape (31) for winding onto a spiral pipeline former. At least one conductor (4,5) is positioned adjacent to the centreline of and parallel with a thin polymer ribbon. The ribbon is folded in half to encapsulate the conductors. The folded ribbon is thermally welded to itself. The folded, welded, ribbon is passed through a creaser, which forms a crease midway across the folded ribbon. The creased pre-formed ribbon is formed into a conduit in a continuous process on a spiral pipeline former (24).
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