GB/T 28764-2012 Ultrasonic method for the detection of the tightness of focused Encasement containers. This standard describes the principle of this detection method, and detects container sealing defects with the help of ultrasonic characteristics. Detail the required equipment, such as ultrasonic testing (UT) devices. Strictly standardize the inspection process, including sample preparation, detection parameter setting, data collection and analysis. The use of this standard for testing can accurately and efficiently judge the tightness of Encasement containers, providing a reliable means for Encasement production and mass control. It helps to prevent the leakage of contents and ensure the integrity of products during storage and transportation.