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US5501753: Stabilized fluid barrier member and method for making and using same

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Filing Information

Inventor(s) Timothy D. Stark ·
Assignee(s) Geosynthetics, Inc. ·
Attorney/Agent(s) Pennie & Edmonds ·
Primary Examiner Michael W. Ball ·
Assistant Examiner Francis J. Lorin ·
Application Number US8299778
Filing date 09/01/1994
Issue date 03/26/1996
Predicted expiration date 09/01/2014
U.S. Classifications 156/70  · 210/170.01  · 156/71  · 156/292  · 210/170.07  · 405/229  · 52/169.14  ·
International Classifications B32B 312  ·
Kind CodeA
International Classifications 15670;292;71;145 ·
10 Claims, No Drawings


Abstract

The invention relates to a stabilized fluid barrier member and to methods of making and using the same. The fluid barrier comprises a first outer sheet member having a top surface and a bottom surface, with a stabilizer element overlying at least part of the first sheet member top surface and abutting the top surface along at least a portion thereof. The stabilizer element defines a plurality of interstitial apertures adapted to contain a quantity of a selectively fluid-impervient barrier material and for substantially preventing displacement of the barrier material from the apertures, notwithstanding the angular inclination at which the fluid barrier member is oriented during manufacture, transport, installation and/or use. The barrier material is chosen for its ability to prevent passage of one or more particular fluids, in liquid or gas form, depending upon the application for which the barrier member is intended. The fluid barrier member of the invention further comprises a second outer sheet member also having a top surface and a bottom surface. The second sheet member overlays at least part of the stabilizer element such that at least a portion of the second sheet member bottom surface abuts and bonds to the stabilizer element. After positioning the various components of the barrier member in abutting stacked relation, they are all bonded together along at least a portion of their abutting surfaces to form an interconnected laminate wherein the stabilizer element is in contact with and bonded to both the first and the second outer sheet members.

Independent Claims | See all claims (10)

  1. 1. A method for forming a stabilized fluid barrier member, which method comprises:providing a first outer sheet member formed from a material selected from the group consisting of geotextiles and geomembranes, said sheet member having a top surface and a bottom surface;positioning, upon the top surface of said first sheet member a stabilizer element having a plurality of interstitial apertures formed therein, said apertures adapted to contain a selectively fluid-impervient barrier material and to substantially prevent displacement of said barrier material within said barrier member, notwithstanding the angular inclination at which said fluid barrier member is oriented, said stabilizer element abutting at least a portion of said first outer sheet member top surface;at least partially filling the interstitial apertures in said stabilizer element with at least one selectively fluid-impervient barrier material;positioning a second outer sheet member on top of the stabilizer element, said second sheet member having a top surface and a bottom surface and formed from a material selected from the group consisting of geotextiles and geomembranes, wherein said second sheet member is positioned atop said stabilizer element such that at least a portion of said second sheet member bottom surface abuts an upper surface of said stabilizer element; andbonding together said first sheet member, said stabilized element and said second sheet member along at least a portion of their abutting surfaces to form a laminate wherein the stabilizer element is in contact with and bonded to at least a portion of both said first and said second outer sheet members.
  2. 6. A method for forming a stabilized fluid barrier member, which method comprises:forming a unitary construct comprising a first sheet member having a top surface and a bottom surface and a stabilizer element formed integrally with said sheet member upon one of said sheet member surfaces, said sheet member formed from a material selected from the group consisting of geotextiles and geomembranes and said stabilizer element having a plurality of interstitial apertures formed therein, said apertures adapted for containing a quantity of at least one selectively fluid-impervient barrier material and for substantially preventing displacement of said barrier material within said barrier member notwithstanding the angular inclination at which said fluid barrier member is oriented;substantially filling said apertures in said stabilizer element with at least one selectively fluid impervient barrier material;placing a second outer sheet member formed from a material selected from the group consisting of geotextiles and geomembranes upon an uncovered surface of said stabilizer element opposed to the surface formed integral with said first sheet member; andbonding together said first sheet member, said stabilizer element and said second sheet member along at least a portion of their abutting surfaces to form a laminate wherein the stabilizer element is in contact with and bonded to both said first and said second outer sheet members.

References Cited

U.S. Patent Documents

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Other Publications

1987 ASTM (American Society for Testing and Materials) Annual Book of Standards vol. 4.08, D4439-85, 1985, "Geotextiles".
Askari et al., "Synthesis and Characterization of Acrylic-Based Superabsorbents", J. App. Poly. Sci., vol. 50, pp. 1851-1855 (1993).
Daniel, "Geosynthetic Clay Liners", Geotechnical News, vol. 9, No. 4, Dec. 1991, pp. 28-32.
Carson, "A Brief Summary of U.S. EPA Subtitle D Municipal Waste Regulations", Geotechnical News, vol. 11, No. 3, pp. 36-38 (Sep. 1993).
Bentofix.TM. Geosynthetic Clay Liners --Sales brochure from National Seal Co.
Bentomat.RTM. Geosynthetic Clay Liner --Sales brochure from Colloid Environmental Technologies Co.
Tensar Geogrids in Civil Engineering --Sales brochure from Tensar Corp.
Koerner, Designing With Geosynthetics, 3rd Ed., (Prentice-Hall, 1994), pps. 6-7, 52-55 and 624-655.

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