BS/EN 1021-1-2014 pdf download.Furniture Assessment of the ignitability of upholstered furniture
Part 1: Ignition source smouldering cigarette.
The smouldering rate shall be (7.5 ± 2) minI4O mm, when tested as follows.
Mark the cigarette, conditioned as described in 7.2 at 10 mm and 50 mm from the end to be lit. Light it as
described In 9.2.1 and impale it horizontally in air (air speed rate less than 0,2 m/s) on a horizontal wire spike
Inserted not more than 13 mm into the unht end, Record the time taken to smoulder from the 10 mm to the
50 mm mark.
The smouldering rate shall be measured on one cigarette from a batch of 20 cigarettes. The smouldering rate may be measured on two cigarettes at the same time. The distance between cigarettes and between each cigarette and any nearby surface such as the wall or floor of the test enclosure shall be at least 150 mm.
If the cigarette ceases smouldering before reaching the 50 mm mark, the measurement of smouldenng rate shall be repeated.
7 Preparation and conditioning
7.1 Preparation
All outer covers and inner covers that have been chemically treated to reduce their ignitability shall be subjected to the water soaking and drying procedure described In Annex D prior to being conditioned according to 7.2. This requirement applies to all methods of treatment, including back coating, which are applied to material covers that are finished in all other respects. It does not apply when the cover material is manufactured from materials that are formulated to be, or are inherently, flame retardant (e.g. fabric woven from inherently flame retardant yams, PVC) provided it is not further treated as a finished cover material.
Where it is not known whether the material has been so treated or not, the water soaking and drying procedure shall be carried out.
7.2 Conditioning
Foam materials shall not be tested for at least 72 h after manufacture. All materials to be tested and the
cigarettes shall be conditioned for at least 24 h immediately before the tests in the following atmosphere:
— temperature: (23 ± 2) °C;
— relative humidity: (50 ± 5) %.
Any cover that has been subjected to the water soaking procedure shall be cut to these dimensions after the soaking procedure.
The long dimensions shall be cut parallel to the machine direction. The cover may be constructed from smaller pieces of matertal, provided that the location of the resulting seams does not occur within 50 mm of the area likely to be affected by the test.
The cover shall have cut-outs 325 mm from one end on both sides. The cut-outs shall be positioned so that when assembled on the test rig, the lay of the pile Is down the back assemb’y and from the hinge to the front of the base frame. The size of these cut-outs shall be approximately 50 mm base width x 100 mm height x 25 mm top width.
Where an inner cover (2.7) is used, It shall be cut to the same dimensions and in the same orientation as the outer cover, for fitting to the test rig under the cover.
Some special products may consist of fabrics bonded to sub-layers of flexible padding etc. When these are to be tested, the material shall be cut to the cover size. The lower layers shall be considered to be part of the filling (see 8.3) and the thickness reduced to ensure the total thickness complies with the specification limits.
8.3 Upholstery filling
Two pieces of filling are necessary for each test, with the following dimensions:
a) one piece (450 ± 5) mm x (300 ± 5) mm x (75 ± 2) mm thick:
b) one piece (450 * 5) mm x (150 ± 5) mm x (75 ± 2) mm thick.
The filling shall reproduce the upper 75 mm of the cushioning assembly except that the upper layer(s) shall not be continued over and round the edges of the assembly.
Where the total thickness of filling materials (see 2.8) beneath the cover(s) exceeds 75 mm, the lower part of the filling shall be removed to give a filling thickness of 75 mm.
Where the filling is less than 75 mm thick, the test assembly shall be built up to the required thickness by adding a further layer(s) of the bottom material to the underside.
Some kinds of loose filling materials, e.g. foam crumb, feathers, may be evaluated by this test method. In these cases the loose filling shall be built up beneath the covering materials to reproduce the 75 mm thickness.BS/EN 1021-1-2014 pdf download.
BS/EN 1021-1-2014 pdf download
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