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EP1027517A1 - Ensemble bande intumescente - Google Patents

Ensemble bande intumescente

Info

Publication number
EP1027517A1
EP1027517A1 EP98938804A EP98938804A EP1027517A1 EP 1027517 A1 EP1027517 A1 EP 1027517A1 EP 98938804 A EP98938804 A EP 98938804A EP 98938804 A EP98938804 A EP 98938804A EP 1027517 A1 EP1027517 A1 EP 1027517A1
Authority
EP
European Patent Office
Prior art keywords
container
assembly according
intumescent
intumescence
sheet material
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
Application number
EP98938804A
Other languages
German (de)
English (en)
Other versions
EP1027517B1 (fr
Inventor
Robert Mcgowan Mann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lorient Polyproducts Ltd
Original Assignee
Lorient Polyproducts Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lorient Polyproducts Ltd filed Critical Lorient Polyproducts Ltd
Publication of EP1027517A1 publication Critical patent/EP1027517A1/fr
Application granted granted Critical
Publication of EP1027517B1 publication Critical patent/EP1027517B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/065—Physical fire-barriers having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures, e.g. intumescent

Definitions

  • the present invention relates to an intumescent strip assembly as used for providing fire resistance in structures such as for example in fire doors, fire resistant glazing systems, fire resistant air transfer grilles or damper vanes.
  • Known intumescent strip assemblies encapsulate intumescent material within a strip-like holder which is mounted for example along an edge of a fire door.
  • the intumescent material In the event of a fire the intumescent material is activated and it intumesces to create an intumesced material which occupies a far greater volume than the intumescent material prior to activation.
  • the holder is either rigid under fire conditions and so is provided with openings to permit the expanding intumescing material to escape or is softened/destroyed under fire conditions to enable the intumescing material to escape.
  • the purpose of the intumescent material is to expand under early fire conditions to seal gaps located between opposed faces within the structure in which it is housed.
  • the intumesced material is not encapsulated but is directly exposed within the gaps which are being sealed.
  • the intumesced material is generally of a foam-like structure or possibly a particulate composition, of low density. It tends therefore to be friable and have limited inherent mechanical strength. Accordingly, under later high temperature fire conditions the intumesced material may be liable to deteriorate physically due to direct exposure to the high temperature fire conditions and/or may be physically fractured due to distortion of the structure or turbulence from the fire.
  • an intumescent strip assembly including an intumescent material encased within an elongate expandable hollow container formed from a high temperature resistant material, the container defining a first internal volume for containing said intumescent material prior to intumescence and being expandable by expansion of the intumescent material on intumescing to define a second internal volume greater than said first internal volume so as to contain intumesced material formed after intumescence of said intumescent material.
  • Figure 1 is a schematic cross-sectional view through an intumescent strip assembly according to a first embodiment of the present invention prior to intumescence;
  • Figure 2 is a similar view to Figure 1 showing the first embodiment after intumescence
  • Figure 3 is a schematic cross-sectional view through an intumescent strip assembly according to a second embodiment of the present invention prior to intumescence;
  • Figure 4 is a similar view to Figure 3 showing the second embodiment after intumescence
  • Figure 5 is a front view of a fire resistant grille incorporating intumescent strip assemblies according to the present invention
  • Figure 6 is a sectional view taken along line VI- VI in Figure 5;
  • Figure 7 is an end view of a slat assembly used in the grille of Figure 5;
  • Figure 8 is a side view of the slat assembly shown in Figure 7.
  • an intumescent strip assembly 10 including an elongate container or casing 11 which contains a strip of intumescent material 14.
  • the intumescent material may be any conventional pressure generating intumescent material such as PALUSOL (RTM) or INTUMEX (RTM) which when exposed to elevated temperatures in excess of 100°C intumesce to form an expanded intumesced material.
  • the container 11 is expandable between a collapsed condition whereat it defines a first internal volume (which is sufficiently large to contain the intumescent material 14 prior to intumescence) and an expanded condition whereat it defines a second internal volume which is greater than the first internal volume and contains the intumescent material after intumescence.
  • the container 11 is expanded from its collapsed condition to its expanded condition by the expansion of the intumescent material during intumescence.
  • the container 11 in Figure 1 is formed from a flexible sheet material 15 which is wrapped about the intumescent material 14.
  • the sheet material 15 is wrapped about the strip of intumescent material 14 so as to have overlapping end portions 15a.
  • the end portions 15a are not connected to one another and so may move relative to one another during expansion of the intumescent material 14 when it intumesces. This enables the internal volume of the container 11 to increase to its second internal volume such that after completion of intumescence, the intumesced material 16 is still contained within the container 11. This condition is illustrated in Figure 2.
  • the sheet material 14 may be tubular in form and that the sheet material defining the walls of the tube may be pleated and/or folded so as to define the collapsed condition of the container; the pleats and/or folds unfolding during expansion of the intumescent material to permit the container to expand to its expanded condition.
  • the container 11 is expanded from its collapsed condition to its expanded condition by expansion of the intumescent material.
  • the internal volume of the container therefore progressively increases from the first volume to define an increasing second volume until further expansion of the container 11 is prevented by the structure in which it is housed, eg it has filled a gap between a door and door frame, or alternatively expansion of the intumescent material stops.
  • the first volume is predetermined at the time of manufacture and the second volume is dependent upon the amount of expansion which is permitted within the structure or which is undergone by the intumescent material.
  • the sheet material is formed from a heat conductive material such as a metal foil which has a melting point above the maximum temperature of exposure expected under fire conditions or when exposed to the standard heating conditions of internationally recognized fire test methods such as BS 476 Pt.20.
  • a suitable metal is copper or a copper alloy which will withstand in excess of 2 hours direct exposure to this heating condition. It will be appreciated that other metals could be utilized where design considerations are less demanding or even more demanding. Accordingly, under fire conditions, after expansion of the container to its expanded condition, the container retains its integrity and so protects the intumesced material from direct exposure to the fire conditions.
  • the gauge of copper foils would fall within the range of 0.02 to 0.3 mm, more preferably 0.05 to 0.2 mm and that the gauge of steel foils would fall within the range of 0.02 to 0.2 mm, more preferably 0.05 to 0.1 mm.
  • Forming the container from a heat conductive metal foil is also advantageous in that the walls of the container conduct heat around the periphery of the intumescent material about its entire periphery substantially at the same time. This permits the intumescent material to respond more rapidly and predictably to fire conditions.
  • the provision of container 11 for retaining the intumesced material can act to form a stronger intumesced material which is mechanically stronger than the intumesced material which is formed with conventional strip assemblies.
  • the container is initially expanded to its maximum expanded condition as permitted by the structure and thereafter further intumescence of the intumescent material acts to pressurise the intumesced material (since further increase in the second volume is not permitted) and so causes its density, particularly within its outer region, to increase. This has the advantage of making the body of intumesced material mechanically stronger.
  • the metal foil is impervious to gas and so retains the gases which escape from the intumescent material during intumescence. This also has the effect of pressurising the intumesced material and thereby create a dense intumesced material.
  • forming container 11 from a metal foil has several different advantages and that different materials may be used for forming container 11 which may only provide one or more of these advantages.
  • the container 11 it is possible to form the container 11 from a sheet material which is heat conductive but not impervious to gas. This would provide the advantage of earlier and more predictable intumescence of the intumescent material but would not necessarily provide the advantages derivable from increasing the density of the intumesced material.
  • a suitable sheet material may be a perforated metal foil or a mesh or fabric made from metallic filaments.
  • the container may be formed from a sheet material which is not a good heat conductor but has sufficient heat conductivity to enable the intumescent material to be activated.
  • a sheet material may or may not be impervious to gas.
  • a suitable sheet material could be a fabric made from non-combustible fibres such as carbon fibres.
  • a metal foil as used for container 11 is susceptible to mechanical damage, eg puncture, it is preferred to encase the container 11 within a tubular protective sleeve 25 when it is intended to incorporate the intumescent strip assembly in a position where it is directly exposed to the environment.
  • the sleeve 25 is preferably formed from a material having a low melting point which enables unhindered expansion of the container 11 under fire conditions.
  • a suitable material is a plastics material such as polyvinylchloride; the sleeve 25 being preferably extruded from this material.
  • the container 11 is formed from two elongate casing portions 50, 51 which are telescopically inter-engaged.
  • the casing portions 50, 51 are both rigid and are preferably extruded from a suitable heat conductive material such as a metal which has a melting point above the maximum temperature expected under fire conditions.
  • a suitable metal from which casing portions 50, 51 may be made is a steel sheet having a gauge of between about 0.6 to 0.9 mm, preferably about 0.8 mm.
  • a fire resistant air grille 60 incorporating intumescent strip assemblies 10 according to the first embodiment is illustrated by way of example in Figures 5 to 8.
  • the grille 60 includes a mounting frame 61 which is of generally square form made up of elongate frame members 62 extending along each side of the frame.
  • a centrally located frame member 63 is also provided.
  • a plurality of grille slat assemblies 65 are provided which are supported at opposite ends between frame member 63 and opposed frame members 62.
  • the slat assemblies 65 define therebetween grille gaps 67 which during normal use define air passages for air to pass through the grille.
  • Each slat assembly 65 includes an intumescent strip assembly 10 in which casing 25 is preferably omitted.
  • the container 11 of each strip assembly 10 is retained within support rails 68 which, as more clearly seen in Figure 7, are each of generally U-shaped cross-section. Opposite ends of each rail 68 are attached to the respective frame member 63 and opposed frame member 62.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)

Abstract

La présente invention concerne un ensemble bande intumescente comprenant une matière intumescente enfermée dans un récipient creux allongé expansible, formé à partir d'une matière résistant à une température élevée. Ce récipient définit un premier volume interne destiné à contenir la matière intumescente avant son gonflement et se dilatant lors de l'expansion de la matière intumescente après gonflement jusqu'à définir un second volume interne supérieur à ce premier volume interne afin de contenir la matière gonflée formée après son expansion.
EP98938804A 1997-10-27 1998-08-12 Ensemble bande intumescente Expired - Lifetime EP1027517B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9722507 1997-10-27
GBGB9722507.2A GB9722507D0 (en) 1997-10-27 1997-10-27 An intumescent strip assembly
PCT/GB1998/002429 WO1999022107A1 (fr) 1997-10-27 1998-08-12 Ensemble bande intumescente

Publications (2)

Publication Number Publication Date
EP1027517A1 true EP1027517A1 (fr) 2000-08-16
EP1027517B1 EP1027517B1 (fr) 2005-05-11

Family

ID=10821049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98938804A Expired - Lifetime EP1027517B1 (fr) 1997-10-27 1998-08-12 Ensemble bande intumescente

Country Status (6)

Country Link
EP (1) EP1027517B1 (fr)
AU (1) AU750983B2 (fr)
CA (1) CA2306854A1 (fr)
DE (1) DE69830190D1 (fr)
GB (1) GB9722507D0 (fr)
WO (1) WO1999022107A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2355188B (en) 1999-09-24 2003-08-20 Lorient Polyprod Ltd An improved fire resistant air transfer grille or damper
GB2361868B (en) * 2000-05-04 2003-07-02 Environmental Seals Ltd Ventilator grills
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
EP1281418A1 (fr) * 2001-07-31 2003-02-05 Hans Dieter Niemann Matériau coupe-feu pour la construction
EP1281417A1 (fr) * 2001-07-31 2003-02-05 Hans Dieter Niemann Matériau pare-feu destiné à la construction
US8225553B1 (en) * 2006-09-28 2012-07-24 The United States Of America As Represented By The Secretary Of The Navy Firezone fumetight seal
US8510996B2 (en) * 2009-07-27 2013-08-20 Schlegel Systems Inc. Intumescent weatherseal
US20110283627A1 (en) * 2010-05-22 2011-11-24 Butterfly Safety Products Llc Smoke guard device and accessories
GB2489962B (en) * 2011-04-13 2013-06-12 Lorient Polyprod Ltd Method and apparatus for forming an intumescent seal, and a seal
GB201406537D0 (en) 2014-04-11 2014-05-28 Polyseam Ltd Chemical damper
JP6510269B2 (ja) * 2015-02-25 2019-05-08 三菱重工業株式会社 シール材、シール構造及び水密扉
GB2549541B (en) * 2016-04-22 2021-01-20 Kilargo Pty Ltd Intumescent grille unit
EP3260173A1 (fr) * 2016-06-24 2017-12-27 HILTI Aktiengesellschaft Élement ignifuge
EP3517815A1 (fr) * 2018-01-24 2019-07-31 HILTI Aktiengesellschaft Ensemble comprenant une pluralité de profilés de protection contre le feu et procédé de fabrication d'un profilé de protection contre le feu
GB2591226B (en) * 2019-12-18 2024-01-03 Tenmat Ltd Improvements in and relating to open state cavity barriers
GB2618470B (en) * 2019-12-18 2024-02-14 Tenmat Ltd Improvements in and relating to open state cavity barriers

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7917514U1 (de) * 1979-09-20 Schroeders, Theo, 5140 Erkelenz FeuerschutzabschluB
DE2150551A1 (de) * 1971-10-11 1973-04-19 Flamex Ltd Sperrvorrichtung, insbesondere fuer brandschutz
FR2433094A1 (fr) * 1978-08-08 1980-03-07 Fichet Bauche Porte coupe-feu a deux vantaux
DE2847156A1 (de) * 1978-10-30 1980-05-14 Schulte Hermann J Kg Brandschutzprofil
EP0014254A1 (fr) * 1979-01-12 1980-08-20 BASF Aktiengesellschaft Procédé pour sceller des matériaux de protection contre le feu en forme de bandes
NL8302140A (nl) * 1983-06-15 1985-01-02 Seac Int Bv Inrichting voor het bij verhoogde temperatuur opwekken van een aandrijvende kracht.
GB2216220B (en) * 1988-03-03 1992-11-11 Mann Mcgowan Fabrications Ltd Fire damper sleeves
AU6398094A (en) * 1993-03-08 1994-09-26 Akro-Fireguard Products, Inc. Pressure sensitive cover for fire resistance
GB2289497B (en) * 1994-05-17 1998-03-04 Lorient Polyprod Ltd Lock and seal assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9922107A1 *

Also Published As

Publication number Publication date
GB9722507D0 (en) 1997-12-24
AU750983B2 (en) 2002-08-08
EP1027517B1 (fr) 2005-05-11
DE69830190D1 (de) 2005-06-16
CA2306854A1 (fr) 1999-05-06
AU8740598A (en) 1999-05-17
WO1999022107A1 (fr) 1999-05-06

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