This standard specifies the method for determining the heat sealing strength of aluminum foil for blister Encasement, including the method principle, reagents and materials, instrumentation and equipment, sample preparation, determination process, result calculation and test report. It is suitable for determining the heat sealing strength of aluminum foil and polyvinyl chloride (PVC) (PVC) or polyvinylidene chloride (PVDC) hard sheets. The heat sealing performance of aluminum foil is evaluated by measuring the disbonding load by heat sealing the aluminum foil coated with heat sealant with the hard sheet using a Tensile machine. The standard details the reagents, materials and equipment required to ensure the accuracy and conformity of the test.