2015OPERATIONSMANUAL
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.