ROOT INTRUSION IMPROVEMENTS IN IRRIGATION TUBES
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United States of America Patent
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Jan 18, 2018
app pub date -
Feb 1, 2016
filing date -
Feb 2, 2015
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Abstract
An aqueous fluid irrigation system for protecting a region of a subsurface irrigation tube from root or microbial mass intrusion, comprising a porous cover covering a subsurface irrigation tube, wherein the cover essentially covers the region of the tube surface, and wherein the cover comprises a non-plexifilamentary material characterized by a peak void volume of less than 35 microns, and any planar region of the non-plexifilamentary material of an area of 500 square microns or less contains a contiguous polymer structure that remains contiguous when exposed to aqueous fluid.
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