Heat Sealing tester HST-01 adopts the test principle of hot pressing and sealing. By making the sealing part of the plastic film into a viscous flow state, with a certain pressure, the two layers of film are fused into a whole, and a certain strength and sealing performance are maintained after cooling. Through the mechanical analysis of the material after heat sealing, the optimal heat sealing time, pressure and temperature are determined to achieve the purpose of production line parameters.