GB2234938A - Improvements in and relating to intumescent fire barriers and their method of manufacture - Google Patents

Improvements in and relating to intumescent fire barriers and their method of manufacture Download PDF

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Publication number
GB2234938A
GB2234938A GB8918933A GB8918933A GB2234938A GB 2234938 A GB2234938 A GB 2234938A GB 8918933 A GB8918933 A GB 8918933A GB 8918933 A GB8918933 A GB 8918933A GB 2234938 A GB2234938 A GB 2234938A
Authority
GB
United Kingdom
Prior art keywords
sheets
intumescent
coated
fire barrier
wire mesh
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
GB8918933A
Other versions
GB2234938B (en
GB8918933D0 (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
Priority to GB8918933A priority Critical patent/GB2234938B/en
Publication of GB8918933D0 publication Critical patent/GB8918933D0/en
Publication of GB2234938A publication Critical patent/GB2234938A/en
Application granted granted Critical
Publication of GB2234938B publication Critical patent/GB2234938B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/02—Layer formed of wires, e.g. mesh
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/105—Ceramic fibres

Abstract

An intumescent fire barrier of relatively light weight comprises a layer of wire mesh sandwiched between sheets of ceramic fibre material each coated on at least one face with vermiculite. One or both sides of each sheet is coated with an intumescent paint which, on drying, provides a surface coating which can flex at least to a limited extent without cracking. The assembly of the wire mesh and coated fibre sheets is enveloped in one or more sheets of material having an external metallic foil surface.

Description

Improvements in and Relating to Intumescent Fire Barriers and their Method of Manufacture This invention relates to intumescent fire barriers and methods of producing the same. More especially but not exclusively, the invention concerns fire barriers in sheet form for providing fire proofing to structural members such as floors, roofs and walls.
Conventional fire barriers in sheet form are generally difficult to install because of their weight and rigidity. In addition, such barriers cannot readily be cut or shaped to follow the contours of the surface or surfaces to be protected.
The present invention sets out to provide an intumescent fire barrier which does not suffer from, or at least alleviates, the disadvantages inherent in conventional fire barriers referred to above.
According to the present invention in one aspect there is provided an intumescent fire barrier of relatively light weight which comprises a layer of wire mesh sandwiched between sheets of ceramic fibre material each coated on at least one face with vermiculite, one or both sides of each sheet being coated with an intumescent paint which, on drying, provides a surface coating which can flex at least to a limited extent without cracking, the assembly of the wire mesh and coated fibre sheets being enveloped in one or more sheets of material having an external metallic foil surface.
Preferably both surfaces of the ceramic fibre sheets are coated with intumescent paint. Preferably this paint is that known in the trade as Pyroplas C.
The material having an external metallic foil surface is preferably a reinforced paper.
According to the present invention in another aspect, there is provided a method of producing an intumescent fire barrier which comprises the steps of coating with an intumescent paint, one or both faces of two sheets of ceramic fibre/vermiculite material applying these two sheets one to each surface of a layer of wire mesh, and enveloping the assembly of the sheets and wire mesh layer in a material having on an external surface a metallic foil.
The invention will now be described by way of example only with reference to the accompanying diagrammatic drawing in which the sole Figure is a section taken through an intumescent fire barrier in accordance with the invention.
The fire barrier illustrated comprises a sheet of wire mesh 1 sandwiched between two sheets of a material 2 such as ceramic fibrous material of intumescent membrane paper, each coated on one side with a layer of vermiculite granules. Each sheet 2 is coated on both sides with an intumescent paint which on drying produces a surface which can flex at least to a limited extent without cracking. A suitable paint is that known in the trade as Pyrolas C.
The assembly of the wire mesh layer 1 and the ceramic fibre sheets 2 is then enveloped within one or more sheets of reinforced paper 3 having an external metallic foil surface finish. The overlapping edges of the sheets 3 are held together with self adhesive foil tape.
Fire barriers as described can readily be secured by, for example, nails to timber frames and joints. In the event that the fire barrier is to be fixed to a metal frame or to a concrete ceiling, for example where the barrier is to be positioned over suspended ceilings or under raised floors, metal strips to provide anchor points for the fire barrier may be supplied. These strips may be fixed to a concrete ceiling or to a metal frame by any conventional means, e.g. masonary nails or rivets respectively.
Fire barriers as described above may be supplied in standard sheet, these typically being six feet in length and two feet in width for under floor barriers and 1 metre wide for barriers for such items as suspended ceilings.
The barriers can readily be shaped by any conventional cutting tool to any required dimension.
In use, for fitting as an under floor barrier, barriers are slid under the floor and laid with their neighbouring sides overlapping by, for example, two inches. The first and last barriers can readily be folded and fixed to the adjoining wall.
When subjected to fire, the surface foil of the fire barrier in time falls away to expose one of the two intumescent sheets 2. The intumescent content of the sheet will by that time have already intumesced into the wire mesh to prevent heat, flames and smoke generated by the fire from penetrating to the opposite side of the fire board. It is anticipated that fire barriers in accordance with the invention will have a two hour rating.
It will be appreciated that the intumescent fire barrier described above is merely exemplary of fire barries in accordance with the invention and that modifications can readily be made thereto without departing from the true scope of the invention.

Claims (6)

1. An intumescent fire barrier of relatively light weight which comprises a layer of wire mesh sandwiched between sheets of ceramic fibre material each coated on at least one face with vermiculite, one or both sides of each sheet being coated with an intumescent paint which, on drying, provides a surface coating which can flex at least to a limited extent without cracking, the assembly of the wire mesh and coated fibre sheets being enveloped in one or more sheets of material having an external metallic foil surface.
2. A fire barrier as claimed in Claim 1 wherein both surfaces of the ceramic fibre sheets are coated with intumescent paint.
3. A fire barrier as claimed in Claim 1 or Claim 2 wherein the intumescent paint is that known in the trade as Pyroplas C.
4. A fire barrier as claimed in any one of Claims I to 3 wherein the material having an external metallic foil surface is preferably a reinforced paper.
5. A method of producing an intumescent fire barrier which comprises the steps of coating with an intumescent paint, one or both faces of two sheets of ceramic fibre/vermiculite material,applying these two sheets one to each surface of a layer of wire mesh, and enveloping the assembly of the sheets and wire mesh layer in a material having on an external surface a metallic foil.
6. An intumescent fire barrier substantially as herein described and as described with reference to the accompanying diagrammatic drawing.
GB8918933A 1989-08-18 1989-08-18 Improvements in and relating to intumescent fire barriers and their method of manufacture Expired - Fee Related GB2234938B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8918933A GB2234938B (en) 1989-08-18 1989-08-18 Improvements in and relating to intumescent fire barriers and their method of manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8918933A GB2234938B (en) 1989-08-18 1989-08-18 Improvements in and relating to intumescent fire barriers and their method of manufacture

Publications (3)

Publication Number Publication Date
GB8918933D0 GB8918933D0 (en) 1989-09-27
GB2234938A true GB2234938A (en) 1991-02-20
GB2234938B GB2234938B (en) 1992-12-09

Family

ID=10661860

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8918933A Expired - Fee Related GB2234938B (en) 1989-08-18 1989-08-18 Improvements in and relating to intumescent fire barriers and their method of manufacture

Country Status (1)

Country Link
GB (1) GB2234938B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0543349A1 (en) * 1991-11-19 1993-05-26 H.B. FULLER LICENSING & FINANCING, INC. Intumescent composite material
WO1999002919A1 (en) * 1997-07-08 1999-01-21 Euro Passive Fire Protection Limited Ventilated covers for electrical fittings
WO1999019140A1 (en) * 1997-10-15 1999-04-22 Alfredo Varini Fire-resistant structure
WO2002010525A1 (en) * 2000-07-29 2002-02-07 Environmental Seals Ltd Fire resistant spacer
WO2002077403A1 (en) * 2001-03-22 2002-10-03 Environmental Seals Ltd Fire doors and panels
GB2411149A (en) * 2004-02-18 2005-08-24 Environmental Seals Ltd Flexible intumescent seal
WO2005121642A1 (en) 2004-06-09 2005-12-22 Liangju Wu A built-in light fitting for fire preventing
CN100483023C (en) * 2004-08-20 2009-04-29 武良举 Embedded lamp
EP2092963A1 (en) * 2008-02-21 2009-08-26 Intumescent Systems Limited Flexible fire retardant material
WO2013158704A1 (en) * 2012-04-18 2013-10-24 E. I. Du Pont De Nemours And Company Multilayered sheet
GB2568688A (en) * 2017-11-22 2019-05-29 Morgan Korea Co Ltd Materials for fire protection

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0543349A1 (en) * 1991-11-19 1993-05-26 H.B. FULLER LICENSING & FINANCING, INC. Intumescent composite material
WO1999002919A1 (en) * 1997-07-08 1999-01-21 Euro Passive Fire Protection Limited Ventilated covers for electrical fittings
WO1999019140A1 (en) * 1997-10-15 1999-04-22 Alfredo Varini Fire-resistant structure
WO2002010525A1 (en) * 2000-07-29 2002-02-07 Environmental Seals Ltd Fire resistant spacer
WO2002077403A1 (en) * 2001-03-22 2002-10-03 Environmental Seals Ltd Fire doors and panels
GB2411149B (en) * 2004-02-18 2007-05-23 Environmental Seals Ltd Flexible seal
WO2005080703A1 (en) 2004-02-18 2005-09-01 Environmental Seals Ltd Flexible seal
GB2411149A (en) * 2004-02-18 2005-08-24 Environmental Seals Ltd Flexible intumescent seal
WO2005121642A1 (en) 2004-06-09 2005-12-22 Liangju Wu A built-in light fitting for fire preventing
EP1754935A4 (en) * 2004-06-09 2007-12-26 Liangju Wu A built-in light fitting for fire preventing
US7470048B2 (en) 2004-06-09 2008-12-30 Liangju Wu Fire-rated recessed downlight
CN100483023C (en) * 2004-08-20 2009-04-29 武良举 Embedded lamp
EP2092963A1 (en) * 2008-02-21 2009-08-26 Intumescent Systems Limited Flexible fire retardant material
WO2013158704A1 (en) * 2012-04-18 2013-10-24 E. I. Du Pont De Nemours And Company Multilayered sheet
GB2568688A (en) * 2017-11-22 2019-05-29 Morgan Korea Co Ltd Materials for fire protection
WO2019102185A1 (en) * 2017-11-22 2019-05-31 Morgan Korea Co., LTD Materials for fire protection
GB2568688B (en) * 2017-11-22 2019-12-11 Morgan Korea Co Ltd Materials for fire protection

Also Published As

Publication number Publication date
GB2234938B (en) 1992-12-09
GB8918933D0 (en) 1989-09-27

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070818