Tensile test: Tensile testing should be accompanied by rupture test. This tensile testing of sealing quality assurance role plays, is a mandatory test. Both tests can be divided into static and dynamic tensile test tension. (1) Static tensile test: a universal tensile tester (which is constituted by a constant speed motor, clamps and spring balance), which is the destruction of tensile testing each sample seal width needed guidance. Cooking bag sealing Rally of three composite film to reach 0.286kg / 10mm, either sterilized or stored for three months, not much effect on the rally. Sealing pull the most suitable range is 0.196-0.338kg / 10mm. (2) dynamic tensile testing: 10mm wide cut several spline seal, after the end of the clip on the shelf, and the other end hanging various weights weight, into the retort to 121 degrees, 30min sterilization, remove the rear weight based on the weight down, you can see the actual tensile strength. Rally Experimental measurement methods: a simple test method is to place the object to be measured transversely for precision spring balance pull repeated 25 times, sealing the displacement of less than 2mm qualified.