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The Furniture and Furnishings (Fire) (Safety) Regulations 1988

Regulation 8(2)

SCHEDULE 3

Ignition resistance test for interliner.

1.  An interliner which is a fabric that has been treated with a fire-retardant chemical to reduce the ignitability of the upholstery shall, before it is conditioned in accordance with clause 7.1 of B.S. 5852: Part 1, be subjected to the water-soaking procedure set out in clauses 4.2 to 4.5 of B.S. 5651, save that for the second subclause of clause 4.5 there shall be substituted the following:

  • “After 30 minutes, remove the specimen, rinse in water (4.2.1) using a liquor ratio of 1:20 for 2 minutes, and then dry the specimen by any method suitable for the fabric type.”

2.  The interliner, water-soaked or not as the case may be, shall be tested using cover fabric corresponding to the specification set out in paragraph 3 below and foam filling corresponding to the specification set out in paragraph 4 below. The test shall be conducted using ignition source 5 of BS 5852: Part 2.

3.  The fabric shall be made of 100 per cent flame retardant polyester fibre. Its construction shall be woven to a plain weave. The yarn in the warp shall be of 1.6 decitex fibre, spun to a linear density of 37 tex, Z twist at 420 turns per metre. The fabric shall be woven to 20.5 yarn threads per centimetre in the warp.

The yarn in the weft shall be of 3.3 decitex fibre spun to a linear density of 100 tex, Z twist at 550 turns per metre. The fabric shall be woven to between 12.6 and 13 threads per centimetre in the weft.

The fabric finish should be scoured and heat set. Its mass shall be 220 g per m2 plus or minus 5 per cent.

4.  The filling material for the test shall be non fire-retardant polyurethane foam corresponding to the specification set out in BS 3379 Type B Hardness grade 130 and of a density of 20–22 kg per m3.

5.  The criteria of failure shall be those specified in clause 4 of BS 5852: Part 2.