Effect of the Sealing Form in Flexible Bottle Neck Upon Impact Tensile Behavior of Multi Layer Laminate Film
Hiroyuki AOKI, Akira SHIMAMOTO, Katsunori FUTASE and Yukihiko KAMADA
Abstract:The bottle-neck shaped seal of bags for holding liquid is particularly convenient for pouring the liquid into another container. In recent years, bags have frequently broken at the bottle-neck shaped seal because the bags were subjected to the impact during loading and unloading. Taking this into consideration, we performed impact tensile tests using two types of bags with bottle-neck shaped seals, one with barrier characteristics, I.e., laminate films of NY/alumina-evaporation PET/XA-S and NY/AL/XA-S, and one without barrier characteristics, I.e., NY/XA-S for bottle neck shaped seal diameters of 7.5, 10, 12.5, 13, 14, 15 and 20 mm and flat seal bags. When the seal diameter of NY/alumina- evaporation PET/XA-S, NY/AL/XA-S or NY/XA-S is 15 mm or greater, the impact tensile load at break is almost the same as that of flat seal bags. Key Words:Impact tensile testing, Liquid package bag, Composite materials, Infrared thermography, Extrusion