When a company's packaging line is required to make 12 or more changeovers per day, packaging machinery can be the nemesis of productivity—or the key to success.
Blanks Printing and Imaging's (Dallas, www.blanks.com) fulfillment
division gives real meaning to the term "quick
changeover." Along
with its ability to interrupt one job for another of higher priority, it even keeps some
equipment on casters to facilitate quick
reconfigurations of the line itself. In this
fast-paced packaging fulfillment operation, jobs run from hundreds to millions
of pieces, and from business card size to
poster size.
Originally a pre-press shop, Blanks
Printing has evolved into a multifaceted
graphics, production and fulfillment operation. Today it employs more than 100
people. The privately held company still
does pre-press work, as well as photography, proofing and color management, offset printing, waterless offset, variable-data printing, binding and fulfillment and shipping. It serves a broad base of regional,
national and international customers, including high-end
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promotional agencies.
Diane Allison, fulfillment manager,
says, "One of our keys to growth is that
we always assume a customer's needs are
changing. We constantly ask about their
plans, what they think they'll need and
how their operations are evolving. Then
we strive to establish the processes that will
advance our customers' plans."
Give the customer
what it wants
One of those changeable processes—
and potential benefits to the customer—is
fulfillment. This section of the company
started in the packaging department in a
small area on the building's second floor.
Fulfillment has since taken over approximately 19,000 square feet. Much of the department's work consists of drop-shipping market-specific point-of-purchase
material and store signage to support
weekly ad supplements mailed to consumers. Turnaround time is nearly real time.
"We may receive materials in the morning,
and ship 1,000 collated kits to individual locations that afternoon," says Allison, "combining materials we have produced with those of
other suppliers or product samples."
A typical project is tough to identify, but
Allison gives the following as an example
of what can happen. An order might
consist of 1,000-5,000 packages, so the
department has to be equipped to shrink
wrap runs from 300 to thousands of packages. The smallest items wrapped are business card size; the largest can be 16 inches
wide and more than 30 inches long.
"The key to our strategy is rapid response," says Allison, "so changeover
time is critical. We have to be able to tear down in the middle of one
job, switch over to another, then
jump back on the original work
and finish it."
She says they often collate
material directly onto the lugged
in-feed conveyors of the shrink
wrappers, which are about 20
ft. long. Then they might do
more kitting on the exit side
before the conveyors terminate
at the case erector. The kitted
components are placed in the
case, then sealed and labeled by
downstream machines.
The fulfillment department started its shrink wrapping with amanual L-bar machine borrowed from the company's bindery department. As business increased,it moved up with the purchase of an automatic L-bar machine. That machine's 33 packagesper-minute output proved insufficient for the growing volume, as well as
the quality expectations of one customer
in particular.
What makes this fulfillment operation
different, says Allison, is that for most printers, shrink wrapping is needed only for
shipping and storage protection, or simple
convenience packaging for the customer.
Her department, however, must also do retail display-quality packaging. That means
packaging quality that can influence customer perceptions about product quality.
"We ship retail packs of as few as 25
sheets of paper that are later unpacked
by the customer, inventoried at his end,
then pulled and shipped to a retail outlet," she says."On these packs, the corners can't curl or puncture after wrapping. There can be no dog ears of any
kind. The clarity and even the tactile feel
of the film are critical."
She says this customer inspects every
package it receives because any returns
from a retailer, its customer, are costly. The
installation of new equipment are helping
to meet this requirement of 100% perfection on received goods. In the long run, she says, it's cheaper to adhere to this customer's higher standard with everything that
goes out the door.
Finding the right
machine
To meet this requirement and handle
additional volume, Allison developed a set
of requirements and started research on a
second shrink-wrap machine. The research
took her to trade shows, talks with other
shrink wrap machine users and vendors.
"I'm not a machinery person," she says.
"I had no preferences. I just knew my requirements and took them to vendors,
working through the selection over six to
nine months."
She methodically worked through a
sound ROI and considered how long a
machine would be viable if the customer
mix and needs changed. "We wanted a
machine adaptable to small or long items,
easy to changeover and maintain, and
with output significantly better than the 33
packages per minute," she says.
Another challenge she had was that she
had non-English speaking people in her fulfillment center. A machine that
would be intuitive to set up was
also part of the mix.
Blanks evaluated a SW-3000
shrink wrapping machine and
ST-900 shrink tunnel from Lantech (Louisville, Ky., www.lantech.com), shipping several cartons of
product to Lantech's factory for
an on-site evaluation of the machine's capabilities. Following that
evaluation, Allison says, the new
system was immediately pressed
into service.
"The ability to store 16 recipes in the control made it easy to
transition into this machine at the
outset, when we were still learning
our way around," she says.
The SW-3000 is a flight-lug machine capable of wrapping up to
75 packs per minute, with on-thefly film tracking adjustment and
side-seal/cross-seal systems that
never need cleaning. The flight-lug in-feed
provides tight control of unstable products
and accepts a minimum package of 3 x 1
x 1/8 inch up to a maximum of 40 x 15 x
6 inches. The adjustment-free rotary sideseal system cuts and seals simultaneously at
the minimum temperature to avoid melting film on components that could degrade
performance or cause a stoppage. The seal
head can be threaded and checked "cold"
for operator convenience. Cross sealing is
maintenance-free, with a seal bar that cuts
and seals with separate surfaces.
The machine has proven user-friendly
to non-English speaking staffers at Blanks.
"The film carriage uses logical settings
based on package height and width, with
inch-denominated scales on the machine
for carriage height, inverting bars, etc.," Allison says. "All settings are related to package dimensions in a systematic way."
Once the package dimensions are determined, the scales, conveyor speeds and
thread film are set, and it's ready to run.
This gives operators great flexibility with
little downtime, adds Allison. "Best of all,
the machine typically uses a roll of film two inches narrower than required for the same work on the L-bar.
This nets a savings of about $20 per roll of film. We're able to
use six-inch rolls now, where eight-inch was our smallest in the
past." =
A case of labor savings
With high volumes of drop-shipping every day, this business
has a big appetite for cases. Managers used to dedicate four to
six people to erect cases for the kitting line. These human case
erectors were given several hours' head start to build boxes.
Those towers of boxes, however, were a nuisance that could fall
like dominoes. And they took up lots of floor space. To resolve
several problems, Blanks purchased a Lantech C-2000 case
erector, which was also subjected to an extensive pre-purchase
evaluation.
"Our cartons ship individually by FedEx ground, so they
have to withstand real-world conditions," says Allison. "They
absolutely positively have to arrive in good shape. Reshipping
and re-do's are out of the question with the schedules our
clients work on".
She says FedEx testing was crucial. Some case erecting machines that they evaluated could not make a box that would pass
without additional taping prior to shipping, or customization by the corrugated manufacturer. If something was a little askew on
a case, or the center seam overlapped, it destroyed the integrity
of the tape and created a bursting situation.
The case erector is sited at the discharge end of the shrink
machines and makes boxes on demand. Packers can efficiently
build kits and feed the cases downstream for sealing and labeling. "We've saved tremendous labor and even brought more
work in from other departments. If the bindery has a shipment
of millions of pieces that go 2,000 to a box, for example, they
can bring the skids up to our conveyors, and we can handle the
job much more quickly."
The last stop before the FedEx truck is a Lantech Q-300
stretch wrapper with integral scale, embedded into the floor so
the table is flush. This machine, too, was vetted extensively. Pallet volume varies from 20 up to100 loads per day, with the fulfillment, bindery and shipping departments sharing the wrapper.
As Blanks ramps up on its variable data printing, the fulfillment department expects demand to grow. "We'll be supporting
another product, so changeovers will be even more frequent,"
Allison says. "This machinery has eliminated our weekend work
and greatly reduced our overtime. We've reduced our material
consumption, and built capacity to absorb a growing workload.
No one would like to go back to the good old days."
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A key competitive strategy for Blanks
Printing is rapid response, meaning
changeover time is critical. It's not
uncommon to tear down in the middle of
one job, switch over to another, then jump
back on the original work and finish it.
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The flight-lug machine can wrap up to 75 packs per minute,
with on-the-fly film tracking adjustment and side-seal/
cross-seal systems that never need cleaning.
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