If the vffs machines want to finish the form fill seal process, it need to be gave a command on the operation panel of machine, usually, below two options will be appeared out.

1-by eye mark on packaging

That is by scanning and tracking the eye mark of packaging film, the prerequisite of using this command is the graphic design of packaging film is specific.

2-by fixed size of pouch

That is by tracking the fixed size of pouch, the prerequisite of using this command is the graphic design of packaging film is unspecified.

So, before you purchase the vertical ffs machine, it necessary to know what kind your graphic design to be, because some vffs machine suppliers only install one of program when they production the vffs machines ,if your pouch own both style of graphic design, you need to ask them to install two different programs at the same time.

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