Impact Tensile Behavior of Liquid Packaging Bag(Impact 1)

Since laminate films used for liquid packaging bags are produced by laminating very thin single films, they are easily influenced by ambient 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 ambient 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 ambient temperature of t=50℃, while those of NY/XA and PET/XA are influenced by the impact tensile speed.