This standard specifies a method for determining the shear failure temperature of adhesive tapes for evaluating the shear strength of adhesive tapes under high temperature conditions. Shear failure temperature (SAFT) refers to the maximum temperature that the adhesive area of the adhesive tape can withstand when a standard load is applied. This standard determines the time required for the adhesive tape specimen to be damaged by holding tack by controlling the heating rate of the oven, and calculates its shear failure temperature. The test equipment includes a blast-type electrothermal thermostatic drying oven with an accuracy of 0.1 ° C, and a specimen cutter in accordance with GB/T 4851-2014. This test helps to understand the performance and Reliability of adhesive tapes under extreme temperature conditions.