GB/T 17344-1998 Air tightness test method for focusing Encasement containers. It describes the principle of air tightness test, which aims to detect the sealing performance of Encasement containers. Detailed description of the equipment required for the test, such as air tightness tester, etc. The test steps are strictly regulated, and there is a clear process from container preparation and sealing installation to pressure detection and result judgment. Through this standard test, it is possible to accurately determine whether Encasement containers are air-tight, which is of great significance to Encasement design, production and product storage. It can effectively prevent the leakage and deterioration of contents, ensure product mass, and ensure that Encasement maintains a good closed state during storage and transportation.