MECHANICAL PROPERTIES OF HEAT-SEALED PART IN THERMAL LAMINATED FILM

摘要

Plastic packaging has been a very important application that significantly improved our way of living. One of the most common forms of plastic packaging is the plastic bag, which is often heat sealed at several ends. In order to increase the heat-seal performance of plastic bags, laminated films e.g. oriented PP/cast PP have been used. However, much solvent is used during the laminating process and the effects of volatile compounds on health and environment were the main concerns when introducing these solvents. Hence, in this study, a new lamination process, i.e. thermal lamination, was developed to avoid the usage of solvents. The characteristics of the thermal laminated films as well as their mechanical properties upon heat-sealing are discussed.