Abstract
Since laminate films used for liquid packaging bags are produced by laminating very thin single films, they are easily influenced by atmospheric temperature; bags often break due to impact load during loading and unloading of packaged products. In this study, impact tensile tests were carried out at relatively low impact tensile speeds between v=0.20 and 1.40 m/s using a rotary impact tensile apparatus developed by us, with atmospheric temperature varied to six temperatures, i.e., t=0, 10, 20, 30, 40 and 50℃. The results indicate that the impact tensile strength of NY/EVA is negligibly influenced by the impact tensile speed at an atmospheric temperature of t=50℃, while those of NY/XA and PET/XA are influenced by the impact tensile speed.
