EP1325199A1 - Protection process and apparatus - Google Patents

Protection process and apparatus

Info

Publication number
EP1325199A1
EP1325199A1 EP01947658A EP01947658A EP1325199A1 EP 1325199 A1 EP1325199 A1 EP 1325199A1 EP 01947658 A EP01947658 A EP 01947658A EP 01947658 A EP01947658 A EP 01947658A EP 1325199 A1 EP1325199 A1 EP 1325199A1
Authority
EP
European Patent Office
Prior art keywords
intumescent
solution
cloth
substance
sheet
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
EP01947658A
Other languages
German (de)
French (fr)
Other versions
EP1325199B1 (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 EP1325199A1 publication Critical patent/EP1325199A1/en
Application granted granted Critical
Publication of EP1325199B1 publication Critical patent/EP1325199B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0203—Arrangements for filling cracks or cavities in building constructions

Definitions

  • This invention relates to a process for protecting objects in the event inter alia of a fire and apparatus for use in this process.
  • The' present invention sets out to provide an economic and effective process for protecting and conserving such objects; the invention also sets out to provide apparatus for use in this process.
  • apparatus for protecting the exposed surfaces of objects comprising an absorbent sheet of woven cloth material impregnated on at least one of its sides with a solution containing an intumescent substance, and an adhesive including an intumescent substance for adhering the sheet to the object to be protected.
  • the apparatus may also comprise an intumescent containing filler for effecting repairs to cracks and the like.
  • the apparatus may also include an intumescent containing coating and/or intumescent containing masonry paint.
  • the intumescent substance for both the solution and the adhesive may comprise an alkaline metal silicate or exfoliating graphite.
  • the intumescent content of the filler, coating and/or masonry paint may also comprise an alkaline metal silicate or exfoliating graphite.
  • a preferred alkaline metal silicate is sodium silicate and the solution may, for example, contain up to about 50% by weight of the intumescent substance. In a preferred embodiment, the solution contains up to about 30% by weight, more especially up to about 20% by weight of the intumescent substance.
  • concentration of intumescent substance employed will depend inter alia upon the degree of intumescence and longevity of fire protection required.
  • the liquid carrier of the solution may be aqueous or non-aqueous. If aqueous, the liquid carrier may additionally contain one or more volatile organic solvents in order to reduce the drying time of the solution.
  • the liquid carrier of the solution may contain thickening agents, suspending agents and stabilising agents, and may be in the form of an emulsion or suspension.
  • the absorbent sheet may comprise woven cloth produced from, for example, glass fibres. In a preferred embodiment both sides of the sheet are impregnated with the intumescent containing solution.
  • the intumescent containing solution may be applied to the sheet with, for example, a brush or spray.
  • the sheet may be immersed in a quantity of the solution.
  • the sheet may be pre-coated with a layer of adhesive on one of its surfaces, the layer being protected by a removable sheet of, for example, cloth, paper or card.
  • the adhesive may be sprayed onto the sheet and/or onto the object to be protected just prior to application of the cloth sheet to the object's surface.
  • the invention provides a process for protecting the exposed surfaces of objects of historical significance which comprises applying to the exposed surface of the object a coating of a clear washable solution comprising a quantity of intumescent material.
  • the invention provides a process for protecting an object against fire, inclement weather or general decay by applying to the object's surface a sheet of woven cloth coated on at least one of its surfaces with a solution of an intumescent containing substance, the cloth being adhered to the object's surface by an adhesive which includes an intumescent substance.
  • the surface of the object may be cleaned or stripped prior to the application of the cloth.
  • the cloth may be applied to the object surface without prior cleaning or stripping.
  • cracks or other unwanted indentations may be filled with an intumescent containing filler.
  • a protective coating containing an intumescent substance may be applied to the exposed cloth surface.
  • one or more coatings of an intumescent containing masonry paint may be applied to the covered object surface.
  • each surface of a woven cloth sheet was impregnated with an intumescent containing solution marketed by the applicants under the trading style FB56.
  • the cloth was allowed to dry and is then wrapped around and adhered to the surface of the object (for example a pillar or column comprising a tree trunk) to be protected using an adhesive marketed by the applicants under the trading designation 1A Intumescent Adhesive (Product 46).
  • the cloth surface was coated with Applicants' intumescent coating product HW01 (Product 42) and, once dry, painted using a suitable masonry or other paint which may or may not include a quantity of intumescent material. Cracks or other unwanted indentations in the object surface were filled using the Applicants' intumescent filler material (Product 63) may be employed.
  • the intumescent substance for both the solution and the adhesive comprised an alkaline metal silicate or exfoliating graphite.
  • the intumescent content of the filter, coating and masonry paint also included an alkaline metal silicate or exfoliating graphite.
  • a preferred alkaline metal silicate is sodium silicate and the solution may, for example, contain up to about 50% by weight of the intumescent substance. In a preferred embodiment, the solution contains up to about 30% by weight, more especially up to about 20% by weight of the intumescent substance.
  • concentration of intumescent substance employed will depend inter alia upon the degree of intumescence required.
  • roof beams which in their unpreserved form comprised timber beams wrapped in a type of cloth weave hessian on the surface of which were water based paintings were initially sprayed with a washable intumescent containing coating material marketed by the Applicants under their trading style 321 (Product 66).
  • the beams were treated as mentioned above using a covering of woven cloth sheet impregnated with an intumescent containing solution and an adhesive containing an intumescent material.
  • the applied cloth and coatings provide protection for the respective object against general wear and tear, inclement weather and decay.
  • One advantage of the invention is that no or limited preparation of the object surface is required. There is, for example, no need to remove from the object surface paint or other decorations applied to the surface. In the event of fire, the intumescent contents of the impregnated cloth and other coating material expands rapidly to protect the covered object for periods of an hour or more.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Electrotherapy Devices (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)

Abstract

The exposed surfaces of objects are protected by an absorbent sheet of woven cloth material impregnated on at least one of its sides with a solution containing an instrumescent substance, and an adhesive including an instrument substance for adhering the sheet to the object to be protected.

Description

PROTECTION PROCESS AND APPARATUS
This invention relates to a process for protecting objects in the event inter alia of a fire and apparatus for use in this process.
In many countries there is a growing recognition of the need to conserve objects of historical significance and especially to protect such objects against outbreaks of fire. The importance of protecting historical objects against the adverse effects of inclement weather and general decay is also both appreciated and recognised. Examples of these objects include painted or otherwise coated wooden facades, pillars, columns, roof beams and the like of historic buildings, particularly in Far Eastern countries where, to date, only limited resources have been employed to protect the fabric and contents of temples and other historic buildings, many of these objects being of timber to which paint or other material has been applied. These objects include tree trunks typically of 30 to 40 feet in height which, some thousands of years ago, were covered with cloth and plaster and then painted. Such pillars and columns have remained essentially untouched to the present time. Many of the external surfaces are cracked and, with ever increasing pollution, require urgent renovation.
At the present time attempts to conserve such objects have included the removal of the outer surface of an object together with any paint or coating thereon and the application of fresh coatings of paint or the like. These attempts have in many cases been found seriously to damage the objects to be conserved and, in any event, do not provide protection against fire.
The' present invention sets out to provide an economic and effective process for protecting and conserving such objects; the invention also sets out to provide apparatus for use in this process.
According to the present invention in one aspect, there is provided apparatus for protecting the exposed surfaces of objects, the apparatus comprising an absorbent sheet of woven cloth material impregnated on at least one of its sides with a solution containing an intumescent substance, and an adhesive including an intumescent substance for adhering the sheet to the object to be protected.
The apparatus may also comprise an intumescent containing filler for effecting repairs to cracks and the like. The apparatus may also include an intumescent containing coating and/or intumescent containing masonry paint.
The intumescent substance for both the solution and the adhesive may comprise an alkaline metal silicate or exfoliating graphite. The intumescent content of the filler, coating and/or masonry paint may also comprise an alkaline metal silicate or exfoliating graphite. A preferred alkaline metal silicate is sodium silicate and the solution may, for example, contain up to about 50% by weight of the intumescent substance. In a preferred embodiment, the solution contains up to about 30% by weight, more especially up to about 20% by weight of the intumescent substance. The precise concentration of intumescent substance employed will depend inter alia upon the degree of intumescence and longevity of fire protection required.
The liquid carrier of the solution may be aqueous or non-aqueous. If aqueous, the liquid carrier may additionally contain one or more volatile organic solvents in order to reduce the drying time of the solution.
The liquid carrier of the solution may contain thickening agents, suspending agents and stabilising agents, and may be in the form of an emulsion or suspension.
The absorbent sheet may comprise woven cloth produced from, for example, glass fibres. In a preferred embodiment both sides of the sheet are impregnated with the intumescent containing solution.
The intumescent containing solution may be applied to the sheet with, for example, a brush or spray. Alternatively, the sheet may be immersed in a quantity of the solution. The sheet may be pre-coated with a layer of adhesive on one of its surfaces, the layer being protected by a removable sheet of, for example, cloth, paper or card. Alternatively, the adhesive may be sprayed onto the sheet and/or onto the object to be protected just prior to application of the cloth sheet to the object's surface.
In another aspect, the invention provides a process for protecting the exposed surfaces of objects of historical significance which comprises applying to the exposed surface of the object a coating of a clear washable solution comprising a quantity of intumescent material.
In a further aspect the invention provides a process for protecting an object against fire, inclement weather or general decay by applying to the object's surface a sheet of woven cloth coated on at least one of its surfaces with a solution of an intumescent containing substance, the cloth being adhered to the object's surface by an adhesive which includes an intumescent substance.
The surface of the object may be cleaned or stripped prior to the application of the cloth. Alternatively, the cloth may be applied to the object surface without prior cleaning or stripping.
Prior to the application of the cloth, cracks or other unwanted indentations may be filled with an intumescent containing filler. After adherence of the cloth to the object surface, a protective coating containing an intumescent substance may be applied to the exposed cloth surface. Once dried, one or more coatings of an intumescent containing masonry paint may be applied to the covered object surface.
In one example of a process in accordance with the invention, each surface of a woven cloth sheet was impregnated with an intumescent containing solution marketed by the applicants under the trading style FB56. The cloth was allowed to dry and is then wrapped around and adhered to the surface of the object (for example a pillar or column comprising a tree trunk) to be protected using an adhesive marketed by the applicants under the trading designation 1A Intumescent Adhesive (Product 46). Once applied the cloth surface was coated with Applicants' intumescent coating product HW01 (Product 42) and, once dry, painted using a suitable masonry or other paint which may or may not include a quantity of intumescent material. Cracks or other unwanted indentations in the object surface were filled using the Applicants' intumescent filler material (Product 63) may be employed.
The intumescent substance for both the solution and the adhesive comprised an alkaline metal silicate or exfoliating graphite. The intumescent content of the filter, coating and masonry paint also included an alkaline metal silicate or exfoliating graphite. A preferred alkaline metal silicate is sodium silicate and the solution may, for example, contain up to about 50% by weight of the intumescent substance. In a preferred embodiment, the solution contains up to about 30% by weight, more especially up to about 20% by weight of the intumescent substance. The precise concentration of intumescent substance employed will depend inter alia upon the degree of intumescence required.
In another example of the process, roof beams which in their unpreserved form comprised timber beams wrapped in a type of cloth weave hessian on the surface of which were water based paintings were initially sprayed with a washable intumescent containing coating material marketed by the Applicants under their trading style 321 (Product 66). In some cases, where the hessian wrapping was damaged, the beams were treated as mentioned above using a covering of woven cloth sheet impregnated with an intumescent containing solution and an adhesive containing an intumescent material.
The applied cloth and coatings provide protection for the respective object against general wear and tear, inclement weather and decay. One advantage of the invention is that no or limited preparation of the object surface is required. There is, for example, no need to remove from the object surface paint or other decorations applied to the surface. In the event of fire, the intumescent contents of the impregnated cloth and other coating material expands rapidly to protect the covered object for periods of an hour or more.
It will be appreciated that the foregoing is merely exemplary of fire protection processes and apparatus in accordance with the invention and that modifications can readily be made thereto without departing from the true scope of the invention.

Claims

1. Apparatus for protecting the exposed surfaces of objects, the apparatus comprising an absorbent sheet of woven cloth material impregnated on at least one of its sides with a solution containing an intumescent substance, and an adhesive including an intumescent substance for adhering the sheet to the object to be protected.
2. Apparatus as claimed in claim 1 further comprising an intumescent containing filler for effecting repairs to cracks and the like.
3. Apparatus as claimed in claim 1 or claim 2 further comprising an intumescent containing coating and/or intumescent containing masonry paint.
4. Apparatus as claimed in any one of the preceding claims wherein the intumescent substance for both the solution and the adhesive comprises an alkaline metal silicate or exfoliating graphite.
5. Apparatus as claimed in any one of claims 2 to 4 wherem the intumescent content of the filler, coating and/or masonry paint comprises an alkaline metal silicate or exfoliating graphite.
6. Apparatus as claimed in claim 5 wherein the alkaline metal silicate is sodium silicate.
7. Apparatus as claimed in any one of the preceding claims wherein the solution contains up to about 30% by weight.
8. Apparatus as claimed in claim 7 wherein the solution contains up to about 20% by weight of the intumescent substance.
9. Apparatus as claimed in any one of the preceding claims wherein the liquid carrier of the solution is aqueous.
10. Apparatus as claimed in claim 9 wherein the liquid carrier additionally contains one or more volatile organic solvents in order to reduce the drying time of the solution.
11. Apparatus as claimed in any one of the preceding claims wherein the absorbent sheet comprises woven cloth.
12. Apparatus as claimed in claim 11 wherein the cloth is produced from glass fibres.
13. Apparatus as claimed in any one of the preceding claims wherein the sheet is pre- coated with a layer of adhesive on one of its surfaces.
14. A process for protecting the exposed surfaces of objects of historical significance which comprises applying to the exposed surface of the object a coating of a clear washable solution comprising a quantity of intumescent material.
15. A process for protecting an object against fire, inclement weather or general decay by applying to the object's surface a sheet of woven cloth coated on at least one of its surfaces with a solution of an intumescent containing substance, the cloth being adhered to the object's surface by an adhesive which includes an intumescent substance.
16. A process as claimed in claim 15 wherein the surface of the object is cleaned or stripped prior to the application of the cloth.
17. A process as claimed in claim 15 or claim 16 wherein after adherence of the cloth to the object surface, a protective coating containing an intumescent substance is applied to the exposed cloth surface.
EP01947658A 2000-10-13 2001-07-06 Protection process and apparatus Expired - Lifetime EP1325199B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0025243 2000-10-13
GBGB0025243.7A GB0025243D0 (en) 2000-10-13 2000-10-13 Protection process and apparatus
PCT/GB2001/003064 WO2002031282A1 (en) 2000-10-13 2001-07-06 Protection process and apparatus

Publications (2)

Publication Number Publication Date
EP1325199A1 true EP1325199A1 (en) 2003-07-09
EP1325199B1 EP1325199B1 (en) 2006-03-15

Family

ID=9901312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01947658A Expired - Lifetime EP1325199B1 (en) 2000-10-13 2001-07-06 Protection process and apparatus

Country Status (7)

Country Link
EP (1) EP1325199B1 (en)
CN (1) CN1469956A (en)
AT (1) ATE320531T1 (en)
AU (1) AU2001269304A1 (en)
DE (1) DE60117987D1 (en)
GB (1) GB0025243D0 (en)
WO (1) WO2002031282A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2909699B1 (en) * 2006-12-12 2011-11-25 Aurelio Vicquery CRACKING RECOVERY METHOD AND BRIDGE STRIP.
NL2001052C2 (en) * 2007-08-20 2009-02-23 Altena Services B V Method for applying solid fire-resistant coating to substrate involves applying adhesive comprising layer of the same fire-resistant coating in liquid form, to the substrate; and applying the flexible solid coating layer to the substrates
CN102912624A (en) * 2011-08-02 2013-02-06 上海优先装饰材料有限公司 Foamed-type textile product flame retardant and preparation method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2722523A (en) * 1952-09-13 1955-11-01 Glidden Co Intumescent coating composition, and binder and process therefor
US3915777A (en) * 1971-07-22 1975-10-28 Albi Manufacturing Co Inc Method of applying fire-retardant coating materials to a substrate having corners or other sharp edges
US3934066A (en) * 1973-07-18 1976-01-20 W. R. Grace & Co. Fire-resistant intumescent laminates
DE4041470A1 (en) * 1990-12-22 1992-06-25 Bayer Ag INTUMESCENT AREAS, THEIR PRODUCTION AND THEIR USE

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0231282A1 *

Also Published As

Publication number Publication date
ATE320531T1 (en) 2006-04-15
EP1325199B1 (en) 2006-03-15
AU2001269304A1 (en) 2002-04-22
CN1469956A (en) 2004-01-21
DE60117987D1 (en) 2006-05-11
WO2002031282A1 (en) 2002-04-18
GB0025243D0 (en) 2000-11-29

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