
2015
OPERATIONS
MANUAL
38
HORIZONTAL FOLDS BETWEEN HEADER SEAL AND ZIPPER.
BIG FOLDS
POSSIBLE
CAUSES
o
ZIPPER WHEELS ARE NOT GRIPPING CAUSING THE ZIPPER TO
SLIP BACK AND DRAW UP THE FILM.
o
CHECK MECHANICAL OPERATION, TIMING, AND CONDITION
OF WHEELS.
END SEAL WRINKLES
WRINKLES
POSSIBLE
CAUSE
o
ZIPPER WHEELS NOT RELEASING TENSION.
o
CHECK MECHANICAL OPERATION AND TIMING.