Method, device and work station for applying protective sheeting of polymer material to a pipeline, and computer program for implementing such a method
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United States of America Patent
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Jan 12, 2021
Grant Date -
Sep 24, 2015
app pub date -
Oct 8, 2013
filing date -
Oct 8, 2012
priority date (Note) -
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Abstract
A method of applying protective sheeting of polymer material to a pipeline, such as on a J-lay rig, includes the steps of driving a carriage along an annular path about the pipeline; extruding and simultaneously winding the protective sheeting about the pipeline via an end extrusion die fitted to the carriage; compressing the protective sheeting on the pipeline, directly downstream from the end extrusion die, so the protective sheeting adheres to the pipeline; and controlling the drive, extrusion, and compression steps so that the time lapse between expulsion of a cross section of protective sheeting from the end extrusion die and compression of the same cross section of protective sheeting is less than one second.
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