Abstract:
The aforementioned team chose the design and fabrication of Vertical Form Fill and Seal (VFFS) machine as its final year project. Packaging is one of the main concerns of manufacturing industry in Pakistan. The existing machines that are manufactured locally have shortcomings like low speed, seal leakage, paper wastage and design out. The project aimed at design and fabrication of such a packing machine that will solve the problems faced by our industry. The machine designed by us seals the film in two parts, first it forms the longitudinal sealing seam and then it forms the horizontal sealing seam. The longitudinal seam is formed with the help of fin seal rollers that form the vertical seal as the film rolls past the minute gap between the fin seal rollers. The horizontal seam is formed by the reciprocatory type sealing jaws. The seams are sealed by briefly heating the sealing medium (usually polythene) which melts. The seams are sealed as soon as the sealing medium cools down and this cooling occurs in milliseconds. The project involved the application of knowledge of quite a few subjects which we had studied in our bachelor’s program such as Instrumentation, Electrical Systems, Automation, Control Systems, Machine Design, Mechanical Vibrations, Mechanics of Machines.
