Method and apparatus for forming leak detectable geomembrane liners
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United States of America Patent
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Dec 3, 2019
Grant Date -
Sep 20, 2018
app pub date -
May 21, 2018
filing date -
Feb 11, 2013
priority date (Note) -
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Abstract
A method for forming a geomembrane liner testable for leaks by securing adjacent panels together with the conductivity of the lower surface of an overlying panel broken along a line adjacent the panel overlapping edge, and the overlapping edges sealed along the line. A heat welder has slots for the overlapping panel edges, with a heated wedge between the slots and having a projection to break the conductivity of the overlying panel bottom surface as it passes the wedge. The slots merge to press the liner edges together to heat weld them along the line of broken conductivity as the welder is moved along the panel edges.
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