MULTI-LAYER LINER FOR WASTE WATER SYSTEM REHABILITATION
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United States of America Patent
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Issued Date -
Jan 24, 2019
app pub date -
Oct 5, 2016
filing date -
Oct 5, 2016
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Abstract
A method and apparatus for rehabilitating or repairing waste water system components or the like comprising a spray-applied, multi-layer liner which seals the components and imparts structural integrity. The liner comprises a first moisture barrier layer, a foam layer and a second moisture barrier layer. A primer may be applied where desired. Typically, the first and second moisture barrier layers are made of the same material for forming a skin on both sides of the foam layer. The combination of the foam layer and the two moisture barrier layers imparts structural strength and rigidity to the cured liner.
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