GB2070114A - Intumescent sealing strip - Google Patents
Intumescent sealing strip Download PDFInfo
- Publication number
- GB2070114A GB2070114A GB8003299A GB8003299A GB2070114A GB 2070114 A GB2070114 A GB 2070114A GB 8003299 A GB8003299 A GB 8003299A GB 8003299 A GB8003299 A GB 8003299A GB 2070114 A GB2070114 A GB 2070114A
- Authority
- GB
- United Kingdom
- Prior art keywords
- holder
- intumescent material
- sealing strip
- intumesces
- intumescent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 42
- 239000000779 smoke Substances 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004800 polyvinyl chloride Substances 0.000 claims description 5
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 5
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 description 5
- 230000009970 fire resistant effect Effects 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
- E06B5/164—Sealing arrangements between the door or window and its frame, e.g. intumescent seals specially adapted therefor
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Special Wing (AREA)
Abstract
A sealing strip 10 having an elongate holder 11 containing an intumescent material 12 for attachment to a structure 14, the holder completely covering the intumescent material when attached to the structure, at least the exposed walls 11a of the holder being composed of a material which at room temperature protects the intumescent material but responds to temperature increase so that when the intumescent material intumesces it is able to burst said exposed walls. <IMAGE>
Description
SPECIFICATION
Sealing strips
The present invention relates to sealing strips and in particular sealing strips for use with doors for providing a firm resistant seal.
It is known to provide fire resistant sealing strips having a holder containing intumescent material which under hot environmental conditions expands and exudes from the holder to form a fire resistant seal. Examples of such sealing strips are disclosed in U.K. patent specifications 1 529054, 1529733, and 1543757.
The holders disclosed in U.K. patent specifications 1 529054, 1 529733 and 1543757 are preferably extrusions of a high thermal conductive material such as aluminium or copper so that the intumescent material contained within the holder is heated by all the surrounding walls of the holder. These holders are normally recessed into the door frame or door edge and a disadvantage of constructing the holder from a material of high thermal conductivity is that the wood surrounding the holder is also heated by the walls of the holder and consequently the wood on the side of the door opposite to where the fire is located could begin to smoulder and create fumes.
The intumescent material used in the sealing strips disclosed in U.K. patents 1529054.
1529733 and 1543757 intumesces within the range of 1 50250c C.
The holders described in these U.K. patent specifications are made of a material which substantially retains its shape when exposed to the temperature range 1 50-2500C and so the holders are provided openings or areas of weakness in the holder through which the intumescent material may exude in the event of a fire.
Provision of apertures has the disadvantage of exposing the intumescent material which is
undesirable in view of the fact that the
intumescent material will normally deteriorate in a
moist environment and also due to the possibility of the intumescent material being removed by unauthorised persons. To avoid these problems, it is suggested in the above U.K patent specifications that the openings may be covered with metal foil, or a resin or that a baffle may be provided which extends across the opening.
It is a general object of the present invention to provide a sealing strip, in particular a smoke/fire sealing strip having a holder containing intumescent material and which obviates the need to provide openings/areas of weakness through which the intumescent material may exude in the event of a fire.
According to one aspect of the present invention there is provided a sealing strip having an elongate holder containing an intumescent
material for attachment to a structure, the holder completely covering the intumescent material when attached to the structure, at least the exposed walls of the holder being composed of a material which at room temperature protects the intumescent material but responds to temperature increase so that when the intumescent material intumesces it is able to burst said exposed walls.
Preferably the intumescent material is
composed mainly of hydrated sodium silicate so
that it intumesces at about 10000. Preferably the
holder is extruded from a thermoplastics material
which at 10000 is at least in a pliable state so as
to enable the intumescent material to burst
through its walls. A suitable plastics material is
rigid polyvinylchloride.
Advantageously, the holder may be provided
with a smoke seal which preferably remains as an
effective smoke seal until the intumescent
material intumesces.
Other aspects of the present invention are
described below with reference to the
accompanying drawings, in which: - Figure 1 is a schematic cross-sectional view of
a first embodiment according to the present
invention shown in situ;
Figure 2 is a schematic cross-sectional view of
a second embodiment according to the present
invention shown in situ;
Figure 3 is a schematic cross-sectional view of
a third embodiment according to the present
invention shown in situ;
Figure 4 is a schematic cross-sectional view of
a fourth embodiment according to the present
invention shown in situ.
Referring initially to Figure 1 the sealing strip
10 includes an elongate holder 11 which is
extruded from a suitable plastics material such as
rigid polyvinylchloride.
The intumescent material 12 contained within
the holder 11 is composed largely of hydrated
sodium silicate and begins to intumesce at about 1000C. A suitable commercially available
intumescent material is PALUSOL (Registered
Trade Mark) marketed by BASF
Aktiengesellschaft. As shown in Figure 1 , the strip
10 is recessed into an edge of a door 14. In the
event of a fire the exposed waIl 11 a of the holder
11 is subjected to heat and becomes pliable and
beings to intumesce. The intumescent material also
intumesces and bursts through the exposed wall
11 a to form a fire resistant seal between the edge
of the door and the door jamb 1 5.
A second embodiment is illustrated in Figure 2
in which a pair of opposed sealing strips 20, 21
are recessed into opposed edges of a pair of doors 22, 23. Sealing strip 20 is basically the same
construction as that illustrated in Figure 1 except
that the cross-sectional shape of the holder is
different. In this respect sealing strip 20 has an
exposed wall 20b which is contoured.
Sealing strip 21 is of similar construction as
that illustrated in Figure 1 except that the exposed
wall 21 a is provided with a channel 24 in which is
received a smoke seal 25 which extends the
length of the holder and which projects from
sealing strip 21 to engage and wipe over the
exposed wall 20a of sealing strip 20. The smoke
seal 25 may be conveniently in the form of a
tongue formed from a suitable plastics or elastomeric material or may be in the form of an elongate brush formed from a suitable plastics material such as a polyamide. A brush made from a polyamide is preferred since it provides an effective smoke seal until the intumescent material intumesces to form a fire seal.
As shown in Figure 3, it is envisaged that the holder 11 may be provided with an elongate slot 26 to receive the smoke seal 25 instead of providing a separate channel 24.
It is also envisaged that the smoke seal 25 may be extruded integrally with the holder, for example the holder may be extruded from rigid polyvinylchloride while the smoke seal could be extruded simultaneously from soft polyvinylchloride.
As illustrated in Figure 4 it is envisaged that the holder need not completely surround the intumescent material, it is important however, that it completely covers the intumescent when in situ. As illustrated in Figure 4 the side walls of the holder 30 may be provided with ribs 28 for facilitating securance of the holder within the recess formed in the door. Ribs 28 may also be provided on the other embodiments described above.
The above described sealing strips are easy to manufacture and provide an effective fire seal at a fairly low temperature. Additionally, where a smoke seal is also provided an effective smoke seal is retained until the intumescent material has created an effective fire/smoke seal.
Claims (6)
1. A sealing strip having an elongate holder containing an intumescent material for attachment to a structure, the holder completely covering the intumescent material when attached to the structure, at least the exposed walls of the holder being composed of a material which at room temperature protects the intumescent material but responds to temperature increase so that when the intumescent material intumesces it is able to burst said exposed walls.
2. A sealing strip according to Claim 1 wherein the holder is extruded from a thermal plastics material which is at least in a pliable state at the temperature at which the intumescent material intumesces.
3. A sealing strip according to Claim 1 or 2 wherein the holder is provided with a smoke seal.
4. A sealing strip according to any preceding claim wherein the intumescent material is composed mainly of hydrated sodium silicate so that it intumesces at about 1000C.
5. A sealing strip according to Claim 4 wherein the holder is formed of rigid polyvinylchloride.
6. A sealing strip substantially as described with reference to and illustrated in any of the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8003299A GB2070114B (en) | 1980-01-31 | 1980-01-31 | Intumescent sealing strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8003299A GB2070114B (en) | 1980-01-31 | 1980-01-31 | Intumescent sealing strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2070114A true GB2070114A (en) | 1981-09-03 |
| GB2070114B GB2070114B (en) | 1984-05-02 |
Family
ID=10511033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8003299A Expired GB2070114B (en) | 1980-01-31 | 1980-01-31 | Intumescent sealing strip |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2070114B (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2148993A (en) * | 1983-11-04 | 1985-06-05 | Mann Mcgowan Fabrications Limi | Door trims |
| GB2165876A (en) * | 1984-10-01 | 1986-04-23 | Shapland & Petter Ltd | Smoke-prevention doors |
| EP0344964A3 (en) * | 1988-05-30 | 1990-04-25 | Wen-Plast Research & Development Limited | Improvements in or relating to a door |
| EP0509701A1 (en) * | 1991-04-15 | 1992-10-21 | Lorient Polyproducts Limited | Smoke seal |
| DE4303573A1 (en) * | 1993-02-08 | 1994-08-11 | Treco Gmbh | Sealing system with primary and secondary seals |
| GB2298159A (en) * | 1995-06-02 | 1996-08-28 | Reddiplex Group Plc | Intumescent strip extruded into cavity of a carrier |
| GB2317914A (en) * | 1996-10-05 | 1998-04-08 | Mohammad Ali Sahba | Wood and metal door |
| EP0839969A1 (en) * | 1996-10-29 | 1998-05-06 | Pietro Migliavacca | Barrier for passive protection against the spread of flames or heat |
| WO1998030654A1 (en) * | 1997-01-10 | 1998-07-16 | Reddiplex Group Plc | Non-halogenated intumescent compositions |
| US6434899B1 (en) | 2001-03-12 | 2002-08-20 | Skamol A/S | Fire resistant door edge construction comprising a stile with groove, high density strip in the groove, an intumescent strip seal, covered by an edge lipping |
| EP1273753A1 (en) * | 2001-07-07 | 2003-01-08 | Nan Ya Plastics Corp. | Fireproof door with frame and molded skins |
| US6923639B2 (en) * | 2002-08-16 | 2005-08-02 | Bath & Body Works, Inc. | Flame-resistant wick holder for candle |
| EP2412912A1 (en) * | 2010-07-27 | 2012-02-01 | Aik Flammadur Brandschutz GMBH | Door seal |
| US8225553B1 (en) * | 2006-09-28 | 2012-07-24 | The United States Of America As Represented By The Secretary Of The Navy | Firezone fumetight seal |
| WO2022096872A3 (en) * | 2020-11-04 | 2022-07-21 | The Fireproof Window Company Limited | Casement window |
| US11486150B2 (en) | 2016-12-20 | 2022-11-01 | Clarkwestern Dietrich Building Systems Llc | Finishing accessory with backing strip |
| CN115324464A (en) * | 2022-08-04 | 2022-11-11 | 中山市富门木制品有限公司 | A fire and smoke seal |
| US11885138B2 (en) | 2020-11-12 | 2024-01-30 | Clarkwestern Dietrich Building Systems Llc | Control joint |
| USD1026252S1 (en) | 2020-11-12 | 2024-05-07 | Clarkwestern Dietrich Building Systems Llc | Control joint |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6747074B1 (en) | 1999-03-26 | 2004-06-08 | 3M Innovative Properties Company | Intumescent fire sealing composition |
-
1980
- 1980-01-31 GB GB8003299A patent/GB2070114B/en not_active Expired
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2148993A (en) * | 1983-11-04 | 1985-06-05 | Mann Mcgowan Fabrications Limi | Door trims |
| GB2165876A (en) * | 1984-10-01 | 1986-04-23 | Shapland & Petter Ltd | Smoke-prevention doors |
| EP0344964A3 (en) * | 1988-05-30 | 1990-04-25 | Wen-Plast Research & Development Limited | Improvements in or relating to a door |
| EP0509701A1 (en) * | 1991-04-15 | 1992-10-21 | Lorient Polyproducts Limited | Smoke seal |
| US5279087A (en) * | 1991-04-15 | 1994-01-18 | Lorient Polyproducts Limited | Smoke seal |
| DE4303573C2 (en) * | 1993-02-08 | 2002-12-12 | Treco Gmbh | Frame with a sealing system with fire protection |
| DE4303573A1 (en) * | 1993-02-08 | 1994-08-11 | Treco Gmbh | Sealing system with primary and secondary seals |
| GB2298159A (en) * | 1995-06-02 | 1996-08-28 | Reddiplex Group Plc | Intumescent strip extruded into cavity of a carrier |
| GB2298159B (en) * | 1995-06-02 | 1999-08-11 | Reddiplex Group Plc | Method of making an intumescent strip |
| GB2317914A (en) * | 1996-10-05 | 1998-04-08 | Mohammad Ali Sahba | Wood and metal door |
| EP0839969A1 (en) * | 1996-10-29 | 1998-05-06 | Pietro Migliavacca | Barrier for passive protection against the spread of flames or heat |
| WO1998030654A1 (en) * | 1997-01-10 | 1998-07-16 | Reddiplex Group Plc | Non-halogenated intumescent compositions |
| US6434899B1 (en) | 2001-03-12 | 2002-08-20 | Skamol A/S | Fire resistant door edge construction comprising a stile with groove, high density strip in the groove, an intumescent strip seal, covered by an edge lipping |
| EP1273753A1 (en) * | 2001-07-07 | 2003-01-08 | Nan Ya Plastics Corp. | Fireproof door with frame and molded skins |
| US6923639B2 (en) * | 2002-08-16 | 2005-08-02 | Bath & Body Works, Inc. | Flame-resistant wick holder for candle |
| US8225553B1 (en) * | 2006-09-28 | 2012-07-24 | The United States Of America As Represented By The Secretary Of The Navy | Firezone fumetight seal |
| EP2412912A1 (en) * | 2010-07-27 | 2012-02-01 | Aik Flammadur Brandschutz GMBH | Door seal |
| US11486150B2 (en) | 2016-12-20 | 2022-11-01 | Clarkwestern Dietrich Building Systems Llc | Finishing accessory with backing strip |
| US11725401B2 (en) | 2016-12-20 | 2023-08-15 | Clarkwestern Dietrich Building Systems Llc | Finishing accessory with backing strip |
| US12018496B2 (en) | 2016-12-20 | 2024-06-25 | Clarkwestern Dietrich Building Systems Llc | Finishing accessory with backing strip |
| US12486676B2 (en) | 2016-12-20 | 2025-12-02 | Clarkwestern Dietrich Building Systems Llc | Finishing accessory with backing strip |
| WO2022096872A3 (en) * | 2020-11-04 | 2022-07-21 | The Fireproof Window Company Limited | Casement window |
| GB2617921A (en) * | 2020-11-04 | 2023-10-25 | The Fireproof Window Company Ltd | Casement window |
| US11885138B2 (en) | 2020-11-12 | 2024-01-30 | Clarkwestern Dietrich Building Systems Llc | Control joint |
| USD1026252S1 (en) | 2020-11-12 | 2024-05-07 | Clarkwestern Dietrich Building Systems Llc | Control joint |
| CN115324464A (en) * | 2022-08-04 | 2022-11-11 | 中山市富门木制品有限公司 | A fire and smoke seal |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2070114B (en) | 1984-05-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PE20 | Patent expired after termination of 20 years |
Effective date: 20000130 |