US4405682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing fire-resistant, thermally insulating board
Assignee: Takeda Pharmaceutical Co Ltd
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Filing: 1981-03-13
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Granted: 1983-09-20
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Expires: 2001-03-13
Abstract
Abstract A method for producing a fire-resistant, thermally insulating board, which comprises applying liquid hydrated sodium silicate (B) onto the inner surface of a facing material or sheet (A), spreading powdery hydrated sodium silicate (C) over the said applied surface, laying the said spread surface on (1) a facing material or sheet (D), (2) a facing material or sheet (D) applied in advance with liquid hydrated sodium silicate (B) or (3) a facing material or sheet having powdery hydrated sodium silicate (C) spread further over the applied surface of (2), implementing the heating and pressing procedure for gluing the assembly, and laminating the resulting fire-resistant board (E) with rigid isocyanurate foam (F). The fire-resistant, thermally insulating board shows reduced fusing and combustion of the rigid isocyanurate foam (F) even when exposed to flame and posseses superior mechanical properties.
Inventors
- 👤 Shoichi Fujita
- 👤 Katsuhisa Kodama
- 👤 Kiyohiro Yuge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:32
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B15/046; B32B15/12; B32B15/20; B32B5/00; B32B5/18; E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; E04B1/941; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; B32B2264/00; B32B2264/10; B32B2307/00; B32B2307/30; B32B2307/304; B32B2307/306; B32B2307/3065; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249985; Y10T428/249987; Y10T428/24999; Y10T428/25; Y10T428/259
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
147 words
A method for producing a fire-resistant, thermally insulating board, which consists essentially of applying liquid hydrated sodium silicate (B) onto the inner surface of a facing material or sheet (A), spreading powdery hydrated sodium silicate (C) over the said applied surface, laying the said spread surface on (1) a facing material or sheet (D), or (2) a facing material or sheet (D) applied in advance with liquid hydrated sodium silicate (B) or (3) a facing material or sheet having powdery hydrated sodium silicate (C) spread further over the applied surface of (2), and then heating and pressing the thus-produced assembly to cure the liquid hydrated sodium silicate-powdery hydrated sodium silicate layers between the facing material (A) and the opposing facing material (D) to glue the assembly together to form a fire-resistant board (E), followed by laminating the resulting fire-resistant board (E) with a rigid isocyanurate foam (F).
Claim 2
Independent Claim
147 words
A method for producing a fire-resistant, thermally insulating board, which consists essentially of applying liquid hydrated sodium silicate (B) onto the inner surface of a facing material or sheet (A), spreading powdery hydrated sodium silicate (C) over the said applied surface, laying the said spread surface on (1) a facing material or sheet (D), or (2) a facing material or sheet (D) applied in advance with liquid hydrated sodium silicate (B) or (3) a facing material or sheet having powdery hydrated sodium silicate (C) spread further over the applied surface of (2), and then heating and pressing the thus-produced assembly to cure the liquid hydrated sodium silicate-powdery hydrated sodium silicate layers between the facing material (A) and the opposing facing material (D) to glue the assembly together to form a fire-resistant board (E), followed by laminating the resulting fire-resistant board (E) with a rigid isocyanurate foam (F).
Claim 3
Dependent Claim
30 words
A method as claimed in claim 1, wherein the facing material or sheet (A) is a metal plate and the facing material or sheet (D) is a metal-foil glued sheet.
Claim 4
Dependent Claim
30 words
A method as claimed in claim 1, wherein the application rate of the liquid hydrated sodium silicate (B) is within the range of about 0.05 to 6 kg/m 2 .
Claim 5
Dependent Claim
30 words
A method as claimed in claim 1, wherein the spreading rate of the powdery hydrated sodium silicate (C) is within the range of about 0.05 to 6 kg/m 2 .
Claim 6
Dependent Claim
34 words
A method as claimed in claim 1, wherein the weight ratio of the liquid hydrated sodium silicate (B) to the powdery hydrated sodium silicate (C) is within the range of about 70:30 to 30:70.
Claim 7
Dependent Claim
25 words
A method as claimed in claim 1, wherein the thickness of the fire-resistant board (E) is within the range of about 0.3 to 10 mm.
Claim 8
Dependent Claim
26 words
A method as claimed in claim 1, wherein the thickness of the rigid isocyanurate foam (F) is within the range of about 10 to 200 mm.
Claim 9
Dependent Claim
30 words
A method as claimed in claim 2, wherein the metal plate is a steel plate or aluminum plate and the metal-foil glued sheet is an aluminum foil glued with paper.
Claim 10
Dependent Claim
148 words
A fire-resistant, thermally insulating board, which is produced by a method consisting essentially of applying liquid hydrated sodium silicate (B) onto the inner surface of a facing material or sheet (A), spreading powdery hydrated sodium silicate (C) over the said applied surface, laying the said spread surface on (1) a facing material or sheet (D), or (2) a facing material or sheet (D) applied in advance with liquid hydrated sodium silicate (B) or (3) a facing material or sheet having powdery hydrated sodium silicate (C) spread further over the applied surface of (2), and then heating and pressing the thus-produced assembly to cure the liquid hydrated sodium silicate-powdery hydrated sodium silicate layers between the facing material (A) and the opposing facing material (D) to glue the assembly together to form a fire-resistant board (E), followed by laminating the resulting fire-resistant board (E) with a rigid isocyanurate foam (F).
Claim 11
Dependent Claim
148 words
A fire-resistant, thermally insulating board, which is produced by a method consisting essentially of applying liquid hydrated sodium silicate (B) onto the inner surface of a facing material or sheet (A), spreading powdery hydrated sodium silicate (C) over the said applied surface, laying the said spread surface on (1) a facing material or sheet (D), or (2) a facing material or sheet (D) applied in advance with liquid hydrated sodium silicate (B) or (3) a facing material or sheet having powdery hydrated sodium silicate (C) spread further over the applied surface of (2), and then heating and pressing the thus-produced assembly to cure the liquid hydrated sodium silicate-powdery hydrated sodium silicate layers between the facing material (A) and the opposing facing material (D) to glue the assembly together to form a fire-resistant board (E), followed by laminating the resulting fire-resistant board (E) with a rigid isocyanurate foam (F).
Claim 12
Dependent Claim
30 words
A board as claimed in claim 9, wherein the facing material or sheet (A) is a metal plate and the facing material or sheet (D) is a metal-foil glued sheet.
Claim 13
Dependent Claim
30 words
A board as claimed in claim 9, wherein the application rate of the liquid hydrated sodium silicate (B) is within the range of about 0.05 to 6 kg/m 2 .
Claim 14
Dependent Claim
30 words
A board as claimed in claim 9, wherein the spreading rate of the powdery hydrated sodium silicate (C) is within the range of about 0.05 to 6 kg/m 2 .
Claim 15
Dependent Claim
34 words
A board as claimed in claim 9, wherein the weight ratio of the liquid hydrated sodium silicate (B) to the powdery hydrated sodium silicate (C) is within the range of about 70:30 to 30:70.
Claim 16
Dependent Claim
25 words
A board as claimed in claim 9, wherein the thickness of the fire-resistant board (E) is within the range of about 0.3 to 10 mm.
Claim 17
Dependent Claim
26 words
A board as claimed in claim 9, wherein the thickness of the rigid isocyanurate foam (F) is within the range of about 10 to 200 mm.
Claim 18
Dependent Claim
30 words
A board as claimed in claim 10, wherein the metal plate is a steel plate or aluminum plate and the metal-foil glued sheet is an aluminum foil glued with paper.
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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) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |