US5584609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Geosynthetic clay liner and method of manufacture
Assignee: Amcol International Corp
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Filing: 1995-04-04
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Granted: 1996-12-17
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Expires: 2015-04-04
Abstract
Abstract An improved method of manufacturing geosynthetic clay liners is provided. The method of manufacture enables the construction of a structurally sound liner without the use of glue or adhesive and further without the use of needle punching or quilting. The method of manufacture also eliminates the need for any subsequent drying step. Water in combination with compression is used to adhere the granular bentonite layer to the inside surfaces of the cover sheet and the primary carrier sheet and further to provide structural stability to the bentonite layer itself.
Inventors
- 👤 Mark Clarey
- 👤 Donald Mathews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:11
CPC Classifications
E; E02; E02D; E02D31/00; E02D31/02; E02D31/002; E02D31/004; E02D2300/00; E02D2300/0037; E02D2300/004; E02D2300/0043; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23921
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
85 words
A geosynthetic clay liner formed by adhering granules of bentonite clay to inside surfaces of a carrier sheet and a cover sheet, without needle punching comprising: a primary carrier sheet; a cover sheet; a layer of compressed bentonite granules disposed between the primary carrier and cover sheets, the compressed bentonite granules having a moisture content of between about 20 and about 30 weight percent to enable the bentonite granules to adhere to the inside surface of the carrier sheet and cover sheet, without needle punching.
Claim 2
Dependent Claim
85 words
A geosynthetic clay liner formed by adhering granules of bentonite clay to inside surfaces of a carrier sheet and a cover sheet, without needle punching comprising: a primary carrier sheet; a cover sheet; a layer of compressed bentonite granules disposed between the primary carrier and cover sheets, the compressed bentonite granules having a moisture content of between about 20 and about 30 weight percent to enable the bentonite granules to adhere to the inside surface of the carrier sheet and cover sheet, without needle punching.
Claim 3
Dependent Claim
64 words
The geosynthetic clay liner of claim 1, wherein the primary carrier sheet has an inside surface in contact with the compressed bentonite granules; the cover sheet has an inside surface in contact with the compressed bentonite granules; the inside surfaces of the cover sheet and the primary carrier sheet carrying fibers which extend from the respective inside surfaces and toward the compressed bentonite granules.
Claim 4
Dependent Claim
31 words
The geosynthetic clay liner of claim 2, wherein the bentonite is granular in form and having particle sizes distributed such that more than 90% are between 4 mesh and 16 mesh.
Claim 5
Dependent Claim
16 words
The geosynthetic clay liner of claim 1, wherein the liner is free of any added adhesive.
Claim 6
Dependent Claim
16 words
The geosynthetic clay liner of claim 1, wherein the liner is free of any added adhesive.
Claim 7
Dependent Claim
87 words
A geosynthetic clay liner formed by adhering granules of bentonite clay to inside surfaces of a carrier sheet and a cover sheet, without needle punching comprising: a woven primary carrier sheet; a woven cover sheet; a layer of compressed bentonite granules disposed between the primary carrier and cover sheets, the compressed bentonite granules having a moisture content of between about 20 and about 30 weight percent to enable the bentonite granules to adhere to the inside surfaces of the carrier sheet and cover sheet, without needle punching.
Claim 8
Dependent Claim
87 words
A geosynthetic clay liner formed by adhering granules of bentonite clay to inside surfaces of a carrier sheet and a cover sheet, without needle punching comprising: a woven primary carrier sheet; a woven cover sheet; a layer of compressed bentonite granules disposed between the primary carrier and cover sheets, the compressed bentonite granules having a moisture content of between about 20 and about 30 weight percent to enable the bentonite granules to adhere to the inside surfaces of the carrier sheet and cover sheet, without needle punching.
Claim 9
Dependent Claim
65 words
The geosynthetic clay liner of claim 6, wherein the primary carrier sheet has an inside surface in contact with the compressed bentonite granules; the cover sheet has an inside surface in contact with the compressed bentonite granules; and the inside surfaces of the cover sheet and the primary carrier sheet carry fibers which extend from the respective inside surfaces and toward the compressed bentonite granules.
Claim 10
Dependent Claim
31 words
The geosynthetic clay liner of claim 7, wherein the bentonite is granular in form and having particle sizes distributed such that more than 90% are between 4 mesh and 16 mesh.
Claim 11
Dependent Claim
16 words
The geosynthetic clay liner of claim 6, wherein the liner is free of any added adhesive.
Claim 12
Dependent Claim
22 words
The geosynthetic clay liner of claim 1 further including rows of stitching extending between the primary carrier sheet and the cover sheet.
Claim 13
Dependent Claim
22 words
The geosynthetic clay liner of claim 6 further including rows of stitching extending between the primary carrier sheet and the cover sheet.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-12-17 | 2000-06-17 | 2000-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-17 | 2004-06-17 | 2004-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-17 | 2008-06-17 | 2008-12-17 | $7700.00 | Window Closed / Lapsed |