FISCHBEIN PBC-6000, Operator'S Manual, Page: 46 / 82

FISCHBEIN
®
Co. MODEL PBC-6000™
OPERATOR’S MANUAL
REV. D 2005-03 46
(E). Creaser Blade Pressure
As a bag enters the creaser assembly, the creaser blade assembly is free to move, to allow
for varying thicknesses in each bag’s profile. Near the leading and trailing edges of the
bags, the gussets double the thickness of the bag and yet still need to be effectively creased,
folded and sealed. The blade assembly is designed with a compression spring to ensure a
steady pressure is applied to the blade and to allow the blade to adjust to changing bag
contours.
The blade pressure must be high enough to break the fibers in the bag material, but low
enough to prevent problems in the folding and sealing process. It has been observed that
for thinner bag materials, the pressure can be set at a lower pressure. For thicker or more
rigid materials the pressure will have to be set to a higher pressure. If the pressure is set too
high, the bag may jam while entering the creaser wheels, the flap may be excessively
wrinkled or the crease line will be crescent in shape, rather than a straight line. Adjusting
the pressure of the blade is a quick and easy procedure. To adjust the pressure, continue to
follow these steps:
19. Loosen the jam nut on the Blade Pressure Adjustment Screw (
P
). The nut and screws
can be seen on the front face of the swing channel. (
Illustration 8.23
)
20. From the front of the machine, turn the screw, (
P
) clockwise to increase the pressure
and counterclockwise to reduce the pressure. This changes the compression in the
spring. For most instances, the pressure needed for most common bag types can be
produced within a couple of turns of the lightest settings of the adjustment screw (
P
).
21. Once the desired pressure is achieved, lock the screw in position with the jam nut.
Illustration 8.23
NOTE:
When making adjustments to the blade pressure, turn the
adjustment screw in half-turn increments at a time.