DANSK DSF/PREN ISO 9773 PDF

1.1 This International Standard specifies a small- scale laboratory screening procedure for comparing the relative burning behaviour of vertically oriented thin and relatively flexible plastics specimens exposed to a low-energy-level flame ignition source. These specimens cannot be tested using method B of IEC 60695-11-10:1999, since they distort or shrink away from the applied flame source without igniting. 1.2 This method of test determines the afterflame and afterglow times of specimens. 1.3 The classification system described in annex A is intended for quality control and the preselection of component materials for products including the determination of ranges of material parameters that give the same classifications (extended application of test results). NOTE Test results are influenced by material components, e.g. pigments, fillers, fire-retardant concentrations.