The NFPA 260 test is a standard of the National Fire Protection Association (NFPA) that measures the burning properties, or fire resistance, of upholstered furniture that may be exposed to cigarette ignition. Furniture components that this test method applies to include cover fabrics, interior fabrics, welt cords, decking materials, barrier materials, and filling/padding materials. One section of the method evaluates the outer cover fabrics and the results obtained from this section of testing is used when assessing the suitability of upholstery fabrics for commercial applications.
The scope of testing involves laying the two test specimens on their own layer of standard polyurethane foam. One of the specimens is tilted up as to form the back of a chair, while the other lays flat. The specimens, which together form the seat and back of a chair, are then tested by placing a lit cigarette in the crevice where the two specimens meet. In order to intensify the heat, cover the specimens and the cigarette with cotton sheeting fabric. They are being tested to record if ignition had occurred on the specimens, as well as to measure the length of the char that develops on the back section of the assembled seat. The results from the test are recorded and the specimen is classified according to two categories, with the rating of Class A or I regarded as the most fire-resistant category.
Class A or I: No Ignition, Maximum Char Length Developed is 45mm
Class B or II: The Specimen Ignites