EP0403213B1 - Improvements in or relating to intumescent fire seals - Google Patents

Improvements in or relating to intumescent fire seals Download PDF

Info

Publication number
EP0403213B1
EP0403213B1 EP90306369A EP90306369A EP0403213B1 EP 0403213 B1 EP0403213 B1 EP 0403213B1 EP 90306369 A EP90306369 A EP 90306369A EP 90306369 A EP90306369 A EP 90306369A EP 0403213 B1 EP0403213 B1 EP 0403213B1
Authority
EP
European Patent Office
Prior art keywords
seal
fire
backing strip
intumescent
door
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.)
Expired - Lifetime
Application number
EP90306369A
Other languages
German (de)
French (fr)
Other versions
EP0403213A1 (en
Inventor
Derek Alfred Ward
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.)
Environmental Seals Ltd
Original Assignee
Environmental Seals 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 Environmental Seals Ltd filed Critical Environmental Seals Ltd
Publication of EP0403213A1 publication Critical patent/EP0403213A1/en
Application granted granted Critical
Publication of EP0403213B1 publication Critical patent/EP0403213B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • This invention relates to intumescent fire seals and to methods of producing the same.
  • the invention also relates to one or more component parts of such fire seals and to combined smoke and fire seals.
  • Fire seals are conveniently located in or around the edges of doors and door frames to seal the gap therebetween in the event of fire. Hitherto, such fire seals have comprised an intumescent strip encased or partially encased within a rigid or semi-rigid plastics sheath which in use is rebated into a channel set in the door or frame edge. A brush of a nylon material or a neoprene angle blade may be upstanding from the plastics sheath to inhibit the passage of smoke.
  • the present invention sets out inter alia to provide an intumescent fire seal which does not suffer from, or at least alleviates, these disadvantages.
  • Fire seals are known from GB-A-1586362 and US-A-3566541 which include backing strips which support layers of intumescent material and, in the case of GB-A-1586362, a brush seal.
  • the fire seal of GB-A-1586362 teaches that the intumescent material should extend across the full width of the backing strip. Neither of these documents disclose the post-characterising features of claim 1 appended hereto.
  • an intumescent fire seal for location about a structure such as a door or door frame, the fire seal comprising an elongate backing strip to one surface of which is secured an upstanding brush seal including a fin positioned within the lateral confines of the brush seal and a layer of intumescent material, the fire seal being characterised in that the fire seal is flexible and its backing strip has a width greater than that of the brush seal (2) which is positioned along one edge of the backing strip (1), and double sided adhesive tape for adhering the fire seal to the door or door frame on which it is to be located, the layer of intumescent material (4) being bonded to the surface of the flexible backing strip (1) and extending over only that portion of the surface of the flexible backing strip which is not covered by the brush seal.
  • the backing strip may be produced, for example, from polypropylene, polyvinylchloride or nylon. Other materials having the required characteristics of longitudinal flexibility and ability to support and carry the elongate brush seal may be employed.
  • the brush seal may be secured to the backing strip by stitching. However, other permanent means of securing the brush seal to the backing strip may be employed.
  • the surface of the backing strip from which the brush seal and fin upstands may be coated with an adhesive material. This coating may be applied by a hot melt technique. In this arrangement, the surface of the backing strip so treated may have a roughened texture.
  • the adhesive surface may be protected by a removable strip of paper or the like.
  • a strip of intumescent material may be applied to the surface of the backing strip from which the brush seal is upstanding.
  • the fire seal illustrated in the drawings comprises a backing strip 1 of a plastics material such as polypropyene, polyvinylchloride or nylon from one surface of which is upstanding a dense bristle brush seal 2 of nylon or other suitable material.
  • the brush seal 2 is secured permanently to the backing strip 1 by stitching or other conventional means.
  • the brush seal is positioned along one edge of the strip.
  • the brush seal may be positioned along either or both edges or may be positioned intermediate these edges.
  • a fin 3 of a plastics material is positioned within the boundaries of the brush 2 and extends lengthwise therewith.
  • the fin 3 provides a physical barrier to the flow of smoke or other gases.
  • the upper surface of the backing strip 1 is coated with an adhesive material to enable a strip of flexible intumescent material 4 to be bonded thereto.
  • the intumescent layer 4 may be applied to the backing strip 1 when the brush seal 2 is attached to the strip, or at some later time. In this latter case, the adhesive coating is protected by, for example, a removable strip of paper or the like.
  • the adhesive coating may be applied by a hot melt technique; to assist bonding, the upper surface of the backing strip may be formed with a roughened texture.
  • a neoprene angle blade may be employed as an alternative to the brush seal.
  • the intumescent strip 4 is based on a mixture of graphite/vermiculite or hydrated sodium silicate, these being two examples only of suitable intumescent materials.
  • the strip may be coated with an epoxy resin to preserve the water content of the material.
  • fire seals in accordance with the invention are manufactured in widths of, for example, 10mm, 20mm and 25mm.
  • the thickness of the seal is typically between 0.75mm and 3mm.
  • fire seals in accordance with the invention can be readily and quickly attached to the edges of a door or door frame by means of double sided adhesive tape.
  • Panel pins or the like may be employed to secure each end of the strip to the door or frame.
  • the fire seal can either be rebated into the edge of the door or door frame or be surface mounted.
  • the seal can readily be shaped around lock areas with a sharp knife or the like.
  • the seal can be overpainted and is not affected adversely by water or chemicals.
  • the brush 3 or blade seal acts initially to inhibit the flow of smoke between the door and its frame.
  • the multi-directional intumescent layer is activated and expands to provide a positive pressure of, for example, 14 bar within the gap between the door and its frame to effect a fire, smoke and airtight seal therebetween and to hold the door in position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Special Wing (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Fireproofing Substances (AREA)
  • Sealing Material Composition (AREA)
  • Gasket Seals (AREA)

Abstract

An intumescent fire seal for location about a structure such as a door or door frame comprises an elongate flexible strip (4) of plastics material to one surface of which is secured a brush or blade seal (2) which upstands from that surface. A layer of intumescent material (1) is bonded to at least part of the strip surface.

Description

  • This invention relates to intumescent fire seals and to methods of producing the same. The invention also relates to one or more component parts of such fire seals and to combined smoke and fire seals.
  • Fire seals are conveniently located in or around the edges of doors and door frames to seal the gap therebetween in the event of fire. Hitherto, such fire seals have comprised an intumescent strip encased or partially encased within a rigid or semi-rigid plastics sheath which in use is rebated into a channel set in the door or frame edge. A brush of a nylon material or a neoprene angle blade may be upstanding from the plastics sheath to inhibit the passage of smoke.
  • Such conventional seals suffer from a number of disadvantages, these including relatively high costs of manufacture and installation, the need for special routing tools during assembly and an inability to flex in a longitudinal sense whereby the seal can only be applied to relatively flat surfaces.
  • The present invention sets out inter alia to provide an intumescent fire seal which does not suffer from, or at least alleviates, these disadvantages.
  • Fire seals are known from GB-A-1586362 and US-A-3566541 which include backing strips which support layers of intumescent material and, in the case of GB-A-1586362, a brush seal. The fire seal of GB-A-1586362 teaches that the intumescent material should extend across the full width of the backing strip. Neither of these documents disclose the post-characterising features of claim 1 appended hereto.
  • In accordance with the present invention there is provided an intumescent fire seal for location about a structure such as a door or door frame, the fire seal comprising an elongate backing strip to one surface of which is secured an upstanding brush seal including a fin positioned within the lateral confines of the brush seal and a layer of intumescent material, the fire seal being characterised in that the fire seal is flexible and its backing strip has a width greater than that of the brush seal (2) which is positioned along one edge of the backing strip (1), and double sided adhesive tape for adhering the fire seal to the door or door frame on which it is to be located, the layer of intumescent material (4) being bonded to the surface of the flexible backing strip (1) and extending over only that portion of the surface of the flexible backing strip which is not covered by the brush seal.
  • The backing strip may be produced, for example, from polypropylene, polyvinylchloride or nylon. Other materials having the required characteristics of longitudinal flexibility and ability to support and carry the elongate brush seal may be employed. The brush seal may be secured to the backing strip by stitching. However, other permanent means of securing the brush seal to the backing strip may be employed.
  • The surface of the backing strip from which the brush seal and fin upstands may be coated with an adhesive material. This coating may be applied by a hot melt technique. In this arrangement, the surface of the backing strip so treated may have a roughened texture. The adhesive surface may be protected by a removable strip of paper or the like.
  • A strip of intumescent material may be applied to the surface of the backing strip from which the brush seal is upstanding.
  • The invention will now be described by way of example only with reference to the accompanying diagrammatic drawings in which:-
    • Figure 1 is a plan view from above of a fire seal in accordance with the invention; and
    • Figure 2 is a section taken along line II-II of Figure 1.
  • The fire seal illustrated in the drawings comprises a backing strip 1 of a plastics material such as polypropyene, polyvinylchloride or nylon from one surface of which is upstanding a dense bristle brush seal 2 of nylon or other suitable material. The brush seal 2 is secured permanently to the backing strip 1 by stitching or other conventional means. As will be seen from the drawings, the brush seal is positioned along one edge of the strip. Alternatively the brush seal may be positioned along either or both edges or may be positioned intermediate these edges.
  • A fin 3 of a plastics material is positioned within the boundaries of the brush 2 and extends lengthwise therewith. The fin 3 provides a physical barrier to the flow of smoke or other gases.
  • The upper surface of the backing strip 1 is coated with an adhesive material to enable a strip of flexible intumescent material 4 to be bonded thereto. The intumescent layer 4 may be applied to the backing strip 1 when the brush seal 2 is attached to the strip, or at some later time. In this latter case, the adhesive coating is protected by, for example, a removable strip of paper or the like. The adhesive coating may be applied by a hot melt technique; to assist bonding, the upper surface of the backing strip may be formed with a roughened texture.
  • A neoprene angle blade may be employed as an alternative to the brush seal.
  • Typically, the intumescent strip 4 is based on a mixture of graphite/vermiculite or hydrated sodium silicate, these being two examples only of suitable intumescent materials. The strip may be coated with an epoxy resin to preserve the water content of the material.
  • Typically, fire seals in accordance with the invention are manufactured in widths of, for example, 10mm, 20mm and 25mm. The thickness of the seal is typically between 0.75mm and 3mm.
  • In use, fire seals in accordance with the invention can be readily and quickly attached to the edges of a door or door frame by means of double sided adhesive tape. Panel pins or the like may be employed to secure each end of the strip to the door or frame. The fire seal can either be rebated into the edge of the door or door frame or be surface mounted. The seal can readily be shaped around lock areas with a sharp knife or the like. The seal can be overpainted and is not affected adversely by water or chemicals.
  • Upon a fire occurring, the brush 3 or blade seal acts initially to inhibit the flow of smoke between the door and its frame. As the temperature surrounding the seal rises to, for example, 105°C, the multi-directional intumescent layer is activated and expands to provide a positive pressure of, for example, 14 bar within the gap between the door and its frame to effect a fire, smoke and airtight seal therebetween and to hold the door in position.
  • It will be appreciated that the intumescent fire seal described is merely examplary of fire seals in accordance with the invention and that modifications can be made thereto without departing from the true scope of the invention.

Claims (2)

  1. An intumescent fire seal for location about a structure such as a door or door frame, the fire seal comprising an elongate backing strip to one surface of which is secured an upstanding brush seal including a fin positioned within the lateral confines of the brush seal and a layer of intumescent material, the fire seal being characterised in that the fire seal is flexible and its backing strip has a width greater than that of the brush seal (2) which is positioned along one edge of the backing strip (1), and double sided adhesive tape for adhering the fire seal to the door or door frame on which it is to be located, the layer of intumescent material (4) being bonded to the surface of the flexible backing strip (1) and extending over only that portion of the surface of the flexible backing strip which is not covered by the brush seal.
  2. A seal as claimed in claim 1 characterised in that the brush seal (2) and fin (3) are secured to the flexible backing strip (1) by stitching.
EP90306369A 1989-06-15 1990-06-12 Improvements in or relating to intumescent fire seals Expired - Lifetime EP0403213B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8913742 1989-06-15
GB8913742A GB2232702B (en) 1989-06-15 1989-06-15 Improvements in and relating to intumescent fire seals

Publications (2)

Publication Number Publication Date
EP0403213A1 EP0403213A1 (en) 1990-12-19
EP0403213B1 true EP0403213B1 (en) 1995-08-23

Family

ID=10658471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90306369A Expired - Lifetime EP0403213B1 (en) 1989-06-15 1990-06-12 Improvements in or relating to intumescent fire seals

Country Status (7)

Country Link
EP (1) EP0403213B1 (en)
AT (1) ATE126858T1 (en)
DE (1) DE69021785T2 (en)
DK (1) DK0403213T3 (en)
ES (1) ES2078309T3 (en)
GB (1) GB2232702B (en)
GR (1) GR3017767T3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2269416B (en) * 1992-07-23 1995-11-01 Environmental Seals Ltd Improvements in or relating to sealing means
GB9601964D0 (en) * 1996-01-31 1996-04-03 Dixon International Ltd Seal
US20110283627A1 (en) * 2010-05-22 2011-11-24 Butterfly Safety Products Llc Smoke guard device and accessories
EP3034738A1 (en) * 2014-12-15 2016-06-22 DORMA Deutschland GmbH Slidable wall system with optimized seal
EP3034739A1 (en) * 2014-12-15 2016-06-22 DORMA Deutschland GmbH Slidable wall system with optimized seal
EP3034746B1 (en) * 2014-12-18 2018-02-21 dormakaba Deutschland GmbH Slidable wall system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3566541A (en) * 1969-03-06 1971-03-02 Rixson Inc Protective barrier for products of combustion
GB1578774A (en) * 1977-04-28 1980-11-12 Dixon International Ltd Fire resistant seals
GB1586362A (en) * 1977-08-12 1981-03-18 Dufaylite Dev Ltd Strip seal containing expandable materials
GB2087463B (en) * 1980-10-20 1984-05-02 Dixon International Ltd Intumescent seals
DE3103094A1 (en) * 1981-01-30 1982-08-26 Theo 5140 Erkelenz Schröders "SEALING PROFILE"
GB2148993B (en) * 1983-11-04 1987-09-30 Mann Mcgowan Fabrications Limi Door trims
DE3717206A1 (en) * 1987-05-22 1988-12-08 Theo Schroeders Profile combination for sealing a gap

Also Published As

Publication number Publication date
DK0403213T3 (en) 1996-01-15
ATE126858T1 (en) 1995-09-15
GB2232702B (en) 1993-10-06
GR3017767T3 (en) 1996-01-31
DE69021785D1 (en) 1995-09-28
DE69021785T2 (en) 1996-03-07
GB8913742D0 (en) 1989-08-02
ES2078309T3 (en) 1995-12-16
GB2232702A (en) 1990-12-19
EP0403213A1 (en) 1990-12-19

Similar Documents

Publication Publication Date Title
US5477643A (en) Panel edge-finishing accessory
GB2096224A (en) Window assembly
HUT68176A (en) Plastering and lining strip for windows stiles, door stiles and the like for the join with the plastering
EP0403213B1 (en) Improvements in or relating to intumescent fire seals
US5421938A (en) Circular duct and apparatus and method of fabrication
AU781482B2 (en) Smoke and fire seal
EP1452664A2 (en) Profile strip
CZ290487B6 (en) Profile to hold cladding film at door and window openings
CA2564214A1 (en) Weatherseals
GB2287740A (en) Door trim with seal
GB2001691A (en) Metal section with thermal stop and door or window frame made from such section
SE439677B (en) REFLECTING INSULATION INTENDED TO BE INSTALLED ON A DEVICE TO BE INSULATED
GB2330855A (en) A protective strip for a door edge
EP0858544B1 (en) Improvements in and relating to surface mounted fire and smoke seals
GB2156735A (en) Surface padding material and method
US3711947A (en) Shearable protective molding and shear
GB2243639A (en) Intumescent fire seal
SE8004936L (en) REVETING BANDS AND SETS AND EQUIPMENT FOR ITS MANUFACTURING
GB2266911A (en) Smoke seal
ES500734A0 (en) IMPROVEMENTS IN OFFSET TYPE PRINTER MACHINES
KR840001787Y1 (en) Windbreak material
FR2402760A1 (en) Retaining section for double-glazing existing window - uses rebated frame in P-section with triangular head to clamp glazing in rebate
EP0902407A1 (en) Sign framing
GB2298443A (en) Pad for sealing the joints of sash frames
SE9000257L (en) EDGE ELEMENT WITH FRONT LAYER

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19910607

17Q First examination report despatched

Effective date: 19911030

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19950823

REF Corresponds to:

Ref document number: 126858

Country of ref document: AT

Date of ref document: 19950915

Kind code of ref document: T

ET Fr: translation filed
REF Corresponds to:

Ref document number: 69021785

Country of ref document: DE

Date of ref document: 19950928

ITF It: translation for a ep patent filed

Owner name: ING. BETTELLO LUIGI

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2078309

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3017767

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19960612

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19960613

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19960630

Ref country code: CH

Effective date: 19960630

26N No opposition filed
REG Reference to a national code

Ref country code: GR

Ref legal event code: MM2A

Free format text: 3017767

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed

Ref document number: 90306369.1

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20000530

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010612

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20020513

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20020514

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20020522

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020523

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20020603

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20020610

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030613

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030630

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030630

BERE Be: lapsed

Owner name: *ENVIRONMENTAL SEALS LTD

Effective date: 20030630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040101

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040101

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040227

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20040101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030613

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050612