18 - Microglue

The most critical factor ¡n controlling the
paper stock being folded, ¡s the design and
condition of the fold rolls.
Worn rollers, or rollers manufactured from the
wrong material or the wrong specifications,
may prevent you from getting a good,
consistent fold. Trying to control today's slick
stock with worn rollers is like trying to drive
your car on snow with bald tires. You will not
have the grip to maintain positive control.
Years ago, we could run almost anything
using steel fold rolls. We learned that with the
changes in paper and printing processes,
steel rolls just didn't have enough grip for
certain jobs.
FOLD ROLLS
Fold roll gripping problems were virtually
eliminated through the introduction of the
combination fold roll. The "combo" fold roll
consists of alternating steel and urethane
segments. It combines the durability of the
steel roll with the grip of the solid urethane roll.
The "combo" roll has become the standard
type roll being supplied on new floor model
folders manufactured today.
Baumfolder can supply brand new fold rolls,
manufactured to the original design
specifications, for both current production
models and older model Baumfolders. In many
cases your older folder can be updated with
the installation of combo rolls to replace the
original steel rolls.
HOW DO YOU KNOW YOUR FOLD ROLLS ARE WORN?
The performance of your Baumfolder, like
any piece of equipment, will gradually
deteriórate as parts wear through normal
use. A point will be reached when the set up
time and other factors, such as spoilage ,
will start to affect production. At this point
you should contact your authorized Baum
dealer to have one of their Service
Technicians make some simple checks to
determine how much wear has occurred.
Here are a couple of ways you can check
your fold rolls for wear:
Steel Rolls
To check for wear on steel rolls, you can use
three 2x12 inch strips of 20# bond or
equivalent stock. Adjust the rolls down so
they are set for constant pressure. Roll a
strip in by hand on each end of the rolls and
one in the center. Check the pressure of
14
each strip. If the rolls are worn, you will not
have any pressure on the center strip. The
complete set of rolls, including the right angle
sections, should be checked.
Solid Rubber / Urethane Rolls
To check solid rubber/urethane rolls , visually
check for uneven wear. Also, after a period of
time, rubber rolls can glaze over and have a
slick, shiny appearance. If these conditions
are present, the rolls should be replaced or
recovered.
Combination Urethane/Steel Rolls
For Combination rolls, visually inspect the
Urethane bands for wear or damage. If the
Urethane bands are damaged or worn below
the steel, the rolls should be replaced or
recovered.
TO ORDER or for INFORMATION
CALL: 800-543-6107 FAX: 800-452-0947
email: parts@baumfolder.com www.baumfolder.com BAUMFOLDER