GB/T 5456-2009 is used to determine the vertical flame spread performance of Spinning & weaving products. The standard specifies the measurement principle, specifies the specifications and accuracy requirements of combustion test equipment, such as combustion tank, igniter, etc. Detailed description of Spinning & weaving sample preparation, including size, quantity, cutting method and pretreatment. Specify the test process, such as setting the ignition time, observing the flame spread direction, speed and duration and other key indicators. Through this standard, the flame propagation characteristics of Spinning & weaving products in the vertical state can be accurately evaluated, providing a basis for Product Research & Development and quality control in the Spinning & weaving industry, and helping to improve the fire safety of Spinning & weaving products in actual use.