AS/NZS 3744.2:1998 (R2013) pdf free.Furniture – Assessment of the ignitability of upholstered furniture – Part2:Ignition source – Match-flame equivalent.
AS/NZS 3744.2 is one of a series of standards concerned with the ignitability of upholstered furniture using various ignition sources.
The ignition source used in this part of ISO 8191 is a gas flame which is equivalent to a match flame.
The three annexes contained in this part of ISO 8191 do not form integral parts of the Standard.
1 Scope and field of application
This part of ISO 8191 lays down a test method to assess the ignitability of material combinations, such as covers and fillings used in upholstered seating, when subjected to a small flame as an ignition source.
The tests measure only the ignitability of a combination of materials used in upholstered seating and not the ignitability of a particular finished item of furniture incorporating these materials. They give an indication of, but cannot guarantee, the ignition behaviour of the finished item of furniture.
4 Criteria of ignition
4.1 Progressive smouldering ignition
For the purposes of this part of ISO 8191, all the following types of behaviour are considered to be progressive smouldering ignitions:
a) any test assembly that displays escalating combustion behaviour so that it is unsafe to continue the test and active extinction is necessary;
b) any test assembly that smoulders until it is essentially consumed within the test duration;
C) any test assembly that smoulders to the extremities of the specimen, viz upper or lower margins, either side or to its full thickness, within the duration of the test;
d) any test assembly that, on final examination, shows evidence of charring other than discoloration, for more than 100 mm in any direction apart from upwards from the location closest to the position of the source.
Disregard any smouldering which ceases within 120 s after removal of the burner tube.