Parts and Functions
Rovema VPK Operators Manual
3/2000 VPK REV(B) PANELVIEW 600
3-15
Forming Set
The forming set shapes the flat film into a tube and guides product
into the bags. It consists of a forming collar, a forming tube, and
securing knobs. The forming collar folds the film into a tube. While
doing so, it folds one edge of the tube inside out and lays the opposite
edge over it. The forming tube maintains the shape of the folded film
and guides product into the bags. Embedded in the center of the
forming tube is a silicon strip. The strip ensures that the vertical sealing
band makes full contract with the film. Covering the strip is a piece of
Teflon tape. The tape isolates the forming tube from the heat of the
vertical sealing device. The securing knobs hold the forming set to
the machine frame.
The forming set is a changeover item. Each bag style requires a
different forming set. The forming set can be identified by the number
stamped on the forming collar mount. The number indicates the flat
bag width.
Figure 3.14
Shows a standard right over left pillow style forming set.
Securing Knob
Forming Tube
Forming Collar