Graphic Packaging International employs a range of equipment from Bobst and Heidelberg to create folded and glued cartons. A typical process is illustrated here by Heidelberg – suppliers of our most recent folder gluer, the Diana X 115.
This video illustrates the typical process for a four corner collapsible carton.
The printed cartons have already been through the cutting and creasing process prior to arrival at the folder gluer. Here the cartons are stacked, and will be “bottom fed” into the system. This facilitates the easy topping up of the stack by the operator as the job is processed through the machine.
The pre-folding section of the machine begins work on the flat sheet by raising the folding over the flaps for the carton. The creasing marks previously punched into the board allow for relatively easy and yet precise folding without the need for further mechanics, such as folding knives.
Glue is added to the flaps that need to be sealed, prior to the sheet passing on to the final folding section of the machine.
Compression at the delivery end of the unit ensure that the glue forms an efficient seal, prior to the complete, but flat, carton being added to the final stack. These flat cartons will be dispatched to the filling company, where the final product will be inserted in to the package to complete the goods ready for the supermarket shelf.