Patent US5090981A successfully refreshed from Google Patents.
US5090981A
Expired / Lapsed
US
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Method for making high R super insulation panel
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1990-09-06
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Granted: 1992-02-25
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Expires: 2010-09-06
Abstract
Abstract An insulation panel comprises a mineral fiber board having a density between 8 and 28 pounds per square foot, the fibers having no organic binder thereon, and between 5 and 40 percent by weight of particulate material packed in the interstices of the board, and a gas-tight envelope encapsulating the board, the envelope being evacuated to a vacuum between 10 -4 Torr and 10 Torr.
Inventors
- 👤 Stanley J. Rusek, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:13
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/50; B32; B32B; B32B17/00; B32B17/02; D; D04; D04H; D04H1/00; D04H1/40; D04H1/413; D04H1/42; D04H1/4209; D04H1/4218; D04H1/58; D04H1/587; D04H1/70; D04H1/72; D04H1/732; F; F16; F16L; F16L59/00; F16L59/06; F16L59/065
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
101 words
A method for making an insulation panel comprising converting mineral material into mineral fibers, directing the mineral fibers toward a collecting conveyor without applying an organic binder to the fibers, directing particulate material into the mineral fibers, the particulate material having a surface area of at least 50 square meters per gram, collecting the mineral fibers and the particulate material on the collecting conveyor, with the particulate material being packed in the interstices of the mineral fibers, and compressing the mineral fibers and particulate material into an insulation panel having a density of between 8 and 28 pounds per cubic foot.
Claim 2
Independent Claim
101 words
A method for making an insulation panel comprising converting mineral material into mineral fibers, directing the mineral fibers toward a collecting conveyor without applying an organic binder to the fibers, directing particulate material into the mineral fibers, the particulate material having a surface area of at least 50 square meters per gram, collecting the mineral fibers and the particulate material on the collecting conveyor, with the particulate material being packed in the interstices of the mineral fibers, and compressing the mineral fibers and particulate material into an insulation panel having a density of between 8 and 28 pounds per cubic foot.
Claim 3
Dependent Claim
30 words
The method of claim 1 comprising directing sufficient particulate material to result in between 5 and 40 percent by weight of particulate material packed in the interstices of the board.
Claim 4
Dependent Claim
26 words
The method of claim 2 in which the directing particulate material step comprises spraying a slurry onto the fibers, where the slurry contains the particulate material.
Claim 5
Dependent Claim
13 words
The method of claim 3 in which the slurry is an aqueous slurry.
Claim 6
Dependent Claim
15 words
The method of claim 2 comprising applying heat to the panel during the compressing step.
Claim 7
Dependent Claim
18 words
The method of claim 5 comprising heating the panel to at least 600° F. during the compressing step.
Claim 8
Dependent Claim
13 words
The method of claim 6 comprising encapsulating the panel in a gas-tight envelope.
Claim 9
Dependent Claim
10 words
The method of claim 7 comprising partially evacuating the envelope.
Claim 10
Dependent Claim
19 words
The method of claim 8 comprising evacuating the envelope to a vacuum between 10 -4 Torr and 10 Torr.
Claim 11
Dependent Claim
42 words
The method of claim 8 comprising introducing heavy gases into the envelope, the heavy gases having a molecular weight greater than that of gaseous oxygen, where the heavy gases constitute at least 50 percent of the gas molecules contained in the envelope.
Claim 12
Dependent Claim
17 words
The method of claim 8 in which the directing particulate material step comprises directing amorphous silica powder.
Claim 13
Dependent Claim
26 words
The method of claim 8 in which the directing particulate material step comprises spraying a slurry onto the fibers, where the slurry contains the particulate material.
Claim 14
Independent Claim
121 words
A method for making an insulation panel comprising converting mineral material into mineral fibers, directing the mineral fibers toward a collecting conveyor without applying an organic binder to the fibers, directing particulate material into the mineral fibers, the particulate material having a surface area of at least 150 square meters per gram, collecting the mineral fibers and the particulate material on the collecting conveyor, with the particulate material being packed in the interstices of the mineral fibers, compressing the mineral fibers and particulate material into an insulation panel having a density of between 8 and 28 pounds per cubic foot, encapsulating the panel in a gas-tight envelope, and evacuating the envelope to a vacuum between 10 -4 Torr and 10 Torr.
Claim 15
Independent Claim
121 words
A method for making an insulation panel comprising converting mineral material into mineral fibers, directing the mineral fibers toward a collecting conveyor without applying an organic binder to the fibers, directing particulate material into the mineral fibers, the particulate material having a surface area of at least 150 square meters per gram, collecting the mineral fibers and the particulate material on the collecting conveyor, with the particulate material being packed in the interstices of the mineral fibers, compressing the mineral fibers and particulate material into an insulation panel having a density of between 8 and 28 pounds per cubic foot, encapsulating the panel in a gas-tight envelope, and evacuating the envelope to a vacuum between 10 -4 Torr and 10 Torr.
Claim 16
Dependent Claim
26 words
The method of claim 13 in which the directing particulate material step comprises spraying a slurry onto the fibers, where the slurry contains amorphous silica powder.
Claim 17
Dependent Claim
13 words
The method of claim 14 in which the slurry is an aqueous slurry.
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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) | 1995-02-24 | 1995-08-26 | 1996-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-24 | 1999-08-26 | 2000-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-24 | 2003-08-26 | 2004-02-25 | $7700.00 | Window Closed / Lapsed |