Tubular liner for sewer rehabilitation
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United States of America Patent
Stats
-
Feb 20, 2018
Issued Date -
N/A
app pub date -
Oct 7, 2015
filing date -
Oct 8, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tubular liner for sewer rehabilitation an inner tubular film; a resin-carrier layer surrounding the inner tubular film; and a mechanically protective outer film system surrounding the resin-carrier layer. The outer film system has an outer film extending in the longitudinal direction of the tubular liner. Longitudinal edges of the outer film are connected to each other in an overlapping manner in the circumferential direction of the tubular liner with connecting points. Upon the elongation in the radial direction during the insertion of the tubular liner, the connection points are elongated and may break in a sewer to be rehabilitated. The outer film features at least one layer made of a material that is mechanically very stable and is essentially not able to elongate, and at least one layer that is essentially impermeable for UV radiation and visible light.
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Family
International Classification(s)
Cited Art Landscape
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