GB/T 8746-2009 focuses on the determination of the ignitability of Spinning & weaving products in the vertical direction. The standard clarifies the determination principle, specifies the technical requirements of special combustion test equipment, and details the preparation of Spinning & weaving product samples, including size, quantity and placement method. Standardize the test process, such as precise control of the ignition source position and ignition time, and carefully observe the difficulty of the sample being ignited and the initial situation of flame spread. The standard provides a unified detection method for the Spinning & weaving industry, helps to evaluate the ignition characteristics of Spinning & weaving products in the vertical state when encountering fire sources, and provides a scientific basis for the improvement of product fire performance and safe use.