Improving the fire resistance properties of upholstered furniture

Liisa Pakkala, Tiia Ryynänen

Research output: Book/ReportReportProfessional

Abstract

The aim of the research project was to develop upholstered furniture with improved fire safety properties. The minimum requirement level was defined as the level where ignition was caused by smokers' materials. More severe ignition sources were the wood crib ignition sources BS 5 and BS 7 specified in BS 5852: Part 2. The effect of barrier interliners on the post-ignition properties of full-scale furniture was studied in an instrumented fire test room where the temperature, rate of heat release, heat flux, smoke production and toxic gases could be measured. The experiments proved that it is most important to choose compatible cover and filling materials. If the cover material ignites, it can become a very effective secondary ignition source which can cause a severe fire growth even in FR quality foam. Where more severe ignition sources are likely to occur, hardly any cover material alone will provide insulation effective enough to protect the filling foam. In such cases charforming insulation layers between the cover and the filling materials are needed. Polyurethane foam of a special quality, preoxidized carbon fabric and FR treated cotton fabrics proved to be the most effective fire barriers. By using FR quality filling materials the ignition threshold of upholstered furniture can be raised considerably. But if the effect of the ignition source exceeds the ignition resistance of the combination, the result may be uncontrollable burning even in FR polyurethane foam.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages54
ISBN (Print)951-38-3475-1
Publication statusPublished - 1989
MoE publication typeNot Eligible

Publication series

NameTiedotteita / Valtion teknillinen tutkimuskeskus
PublisherVTT
No.1002
ISSN (Print)0358-5085

Fingerprint

Fire resistance
Ignition
Foams
Fires
Polyurethanes
Insulation
Cotton fabrics
Smoke
Heat flux
Wood
Carbon

Keywords

  • fire resistance
  • fire protection
  • textiles
  • furniture
  • upholstry
  • fabrics
  • smoke
  • ignition

Cite this

Pakkala, L., & Ryynänen, T. (1989). Improving the fire resistance properties of upholstered furniture. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tiedotteita, No. 1002
Pakkala, Liisa ; Ryynänen, Tiia. / Improving the fire resistance properties of upholstered furniture. Espoo : VTT Technical Research Centre of Finland, 1989. 54 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 1002).
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Pakkala, L & Ryynänen, T 1989, Improving the fire resistance properties of upholstered furniture. Valtion teknillinen tutkimuskeskus. Tiedotteita, no. 1002, VTT Technical Research Centre of Finland, Espoo.

Improving the fire resistance properties of upholstered furniture. / Pakkala, Liisa; Ryynänen, Tiia.

Espoo : VTT Technical Research Centre of Finland, 1989. 54 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 1002).

Research output: Book/ReportReportProfessional

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AU - Pakkala, Liisa

AU - Ryynänen, Tiia

PY - 1989

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AB - The aim of the research project was to develop upholstered furniture with improved fire safety properties. The minimum requirement level was defined as the level where ignition was caused by smokers' materials. More severe ignition sources were the wood crib ignition sources BS 5 and BS 7 specified in BS 5852: Part 2. The effect of barrier interliners on the post-ignition properties of full-scale furniture was studied in an instrumented fire test room where the temperature, rate of heat release, heat flux, smoke production and toxic gases could be measured. The experiments proved that it is most important to choose compatible cover and filling materials. If the cover material ignites, it can become a very effective secondary ignition source which can cause a severe fire growth even in FR quality foam. Where more severe ignition sources are likely to occur, hardly any cover material alone will provide insulation effective enough to protect the filling foam. In such cases charforming insulation layers between the cover and the filling materials are needed. Polyurethane foam of a special quality, preoxidized carbon fabric and FR treated cotton fabrics proved to be the most effective fire barriers. By using FR quality filling materials the ignition threshold of upholstered furniture can be raised considerably. But if the effect of the ignition source exceeds the ignition resistance of the combination, the result may be uncontrollable burning even in FR polyurethane foam.

KW - fire resistance

KW - fire protection

KW - textiles

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Pakkala L, Ryynänen T. Improving the fire resistance properties of upholstered furniture. Espoo: VTT Technical Research Centre of Finland, 1989. 54 p. (Valtion teknillinen tutkimuskeskus. Tiedotteita; No. 1002).