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Retrofit to save money... and maybe your business

You say money's tight, but you still have to increase productivity and quality? System and component suppliers can give your old machine or line the latest upgrades for a lot less than a new one.

By Managing Editor Melissa Larson -- Converting Magazine, 7/1/2002

Everyone's doing it. Trying to find a way to increase operating efficiency, and perhaps even crack new markets, without spending hundreds of thousands of dollars on new machinery. As a converter, you may be harboring an all-or-nothing attitude about capital spending that is keeping you from making very profitable incremental improvements.

OK, so you can't afford a brand-new press. How about a new drive system for your existing press? How about updated controls, better winding systems, or an autoloader upgrade to your slitter that would help it run better?

Your machine builder, or even a supplier who competes with your original machine builder, is very likely willing and able to retrofit your equipment with a host of new upgrades, many for an investment between $25,000 and $50,000. Suppliers keep their engineers and installers busy, and you wind up with a better system for a fraction of the cost of a new one. It's the converting industry's best-kept secret and represents a true win-win scenario for both you and the supplier. (Check out our exclusive Retrofit/Upgrade Directory that debuts in this issue, p. 44.)

We talked to some of the industry's most prominent converting equipment suppliers to find out how they're helping their best customers upgrade their lines without breaking the bank.

Many of them are discovering that a significant percentage—20 percent or more—of their current business is retrofitting, and that type of activity is helping them not only stay in business, but even grow their overall sales volume during the industry's downturn. And those suppliers with a healthy retrofit business over a wide client base stand to gain ground over their competitors once business turns up.

Simple to fancy

For slitter/rewinder manufacturer Conweb (Fairfield, NJ), retrofits take many forms. "We can do anything from a relatively simple overhaul to a complete remanufacture," says Colm O'Shea, president. "We can install multi-motor drives, the latest tension controls, PLCs, etc. so that their old machine is as close to state-of-the-art as possible."

O'Shea says that customers come to them for many different reasons. "They're bothered by a lack of productivity, or they feel they're at a competitive disadvantage because of the age of their equipment," he says.

"Or it could simply be that they're running new materials and find their equipment needs new features or capabilities," he adds.

If you approach Conweb about a retrofit, however, be prepared to do your homework. "We really want our potential customers to explore whether a retrofit would offer a better return on investment than a new machine," O'Shea says. "We recommend that they look at the new machines on the market, see what's available, and make themselves a 'wish list' of capabilities."

Conweb asks for that list, along with photos, assembly drawings and literature pertaining to the old equipment.

"Then we break down the options and detail them at a site visit," he says. "We discuss their needs in person, and give them a firm quote for the work. We take on projects only where we feel confident in offering a warranty."

Managed properly, retrofitting can be steady, profitable work for the machinery manufacturer. It allows them to build in a slightly more comfortable profit margin than when quoting on new equipment, where competition is so fierce right now. And if the retrofit goes well, there can be repeat business.

"In one case, a large customer needed a series of machines retrofitted," says O'Shea. "We took one machine out, performed the upgrades, reinstalled it, changed another older one out, retrofitted that, and just kept going. The whole project took three years."

O'Shea estimates that, averaged over the last four years, retrofits represent between 15 and 20 percent of Conweb's overall sales volume. "I actually expect that to increase in the near term, until the economy improves," he speculates. "But even after it does improve, there will be a constant need for newer features on older machines. For instance, control technology is advancing so fast, there will be a continuing need for upgrades in that area."

Converters whose coating lines are 10 to 15 years old can discover that aging coating heads, unwinds and drive systems are slowing down productivity and versatility. Engineers at Geometric (Edison, NJ) quote coating retrofits that range from $30,000 for a simple upgrade to $500,000 for a complete new coating head and drive system. "We recently quoted $1 million for an extensive retrofit," says Bill Myer Sr., president.

What makes coating converters pick up the phone and ask for a quote? "They're starting to realize that with one or two changes, their whole line can be faster and more versatile," he says.

"We see unwinders, which were built in the 1920s, that form a bottleneck for the whole operation," Myer continues. "Or customers need versatility that isn't available with the equipment they have. One retrofit customer we recently worked with needed a larger-diameter rewind for paper customers—until recently he had only done film."

Although some of Geometric's customers install their own retrofit equipment, Geometric's engineering staff provides an onsite shakedown and test of, for instance, drive systems.

Myer makes little distinction, from a business standpoint, between retrofits and sales of new coating lines. "As far as we're concerned, it's all new business," he says.

In-house talent

Over its 53 years in business, converter Plastic Suppliers (Columbus, OH) has bought or built dozens of slitters—some 48 are deployed worldwide. Most of them are Dusenberys, but many of them bear little resemblance to the way they were equipped when they were new. That's because Plastic Suppliers' own engineering staff performs their own retrofits of these older machines, in a carefully planned round-robin schedule whereby a machine is taken out of service, rebuilt with new drives, control systems, etc., then redeployed.

Henry Stephens, a second-generation, 18-year veteran of the company, is Plastic Suppliers' converting maintenance and equipment manager. He and his staff perform the slitter retrofits personally.

"We've done between 20 and 25 retrofits so far," he says. "Each is a custom rebuild, and the equipment depends on the needs of the facility where it will be reinstalled. It may be slitting lightweight film, sheet, narrow-web material, etc. and that will impact the gearing, tension, and size of the rollers."

All the retrofit work is performed in the company's Columbus facility, takes from 3-6 months from start to finish, and includes new electronic controls and drive systems.

Before beginning a retrofit project, Stephens polls operators at the facility involved in the rebuild to see what types of control panels, etc. they prefer. "Some operators want the latest controls, others prefer the same kind of knobs and buttons they're used to," he says.

Stephens purchases the electronic components directly from the manufacturer (for instance, for PLCs he chooses Allen-Bradley, Milwaukee). Since the company has overseas operations, retrofits destined for Europe must meet CE guidelines.

"For instance, a recent retrofit headed for our facility in Ghent, Belgium, was a machine originally built in the late 50s or early 60s, that needed quite a bit of work to conform to CE standards, modern safety codes, etc.," he says. "As we've gotten more familiar with European machine standards, we may be incorporating them into our standards here in the U.S. as well." Stephens is often on the road at Plastic Suppliers' various locations, performing scheduled maintenance, checking on retrofitted equipment and scouting for his next retrofit project. As the company slits a wide variety of widths and materials, opportunities to give an old slitter new capabilities are always available.

Where to start

For converters who are not fortunate enough to have a talented in-house mechanic like Henry Stephens on staff, the homework and preparation for a retrofit quote can be daunting. What, after all, should a converter expect of his equipment? Where can a limited budget best be used to bring an acceptable return on investment?

According to Chris Duval, sales manager of control-systems vendor Candy Controls (Niles, IL), upgrade considerations for a web-process machine should begin with an examination of four systems: register controls, infeed and outfeed tension controls, inking systems, and drying systems.

Register controls: According to Duval, adding automatic register controls adds a capability that reaches beyond just accuracy. "Yes, automatic controls make the registration more accurate than manual systems, but it also allows the operator to pay attention to other things, because the burden of register is now automatic," he says.

Infeed/outfeed tension controls: In the modern converting operation, these are a must for accuracy, and a relatively uncomplicated retrofit for older machines.

Inking systems: "If your goal is to improve performance and quality, you can't ignore the inking system," says Duval. "If you're trying to improve your operation to bid on process-color work, the inking system must be able to keep up."

Drying systems: Drying, according to Duval, can quickly become the weakest link after an upgrade, if it's not part of the initial planning. "Increasing speed means the dryer has to go faster too," he warns. "Either increase the capacity of the conventional drying system, or switch to UV inks and a UV drying system."

"Each converter has to look at his own set of circumstances and set goals for the upgrade," Duval says. "Some situations call for a full upgrade of everything to compete in this market.

"Other situations call for only one or two areas of the machine to be upgraded, for it to be competitive. This could be because the machine is not very old, or it could be the converter bought the best, with all the bells and whistles, and now it only needs a little help to be competitive again."

Faster drying in two hours

Bear Huber, manager of customer service/sales for pressmaker Paper Converting Machine Co. (Green Bay, WI), spends a great deal of his time helping customers with small capital expenditure budgets make the press upgrades they need to stay competitive. PCMC's massive dryer upgrades for CI-flexo presses allow the converter to make the transition to water-based inks. These retrofits run $200,000 for a $3-4 million press, and take several days to install.

However, a similar retrofit is available for the Webtron narrow-web presses that PCMC now sells and services. "That retrofit dryer unit costs about $8,500, is the size of a briefcase, and installs in two hours," he says. "It allows a 25 percent increase in speed."

Still, each retrofit means careful consideration on the part of the converter, according to Huber. He compares it to owning an older car. "You have to ask yourself, should I buy a new car or fix the transmission on the old car?"

Retrofit supplier as partner

For slitter/rewinder manufacturer John Dusenbery Co., Inc. (Randolph, NJ), retrofit services are just part of the overall service package they offer their worldwide customers. While other slitter vendors have become adept at retrofitting Dusenbery machines, there's something to be said for letting the original builder perform the retrofit, according to the company.

"In addition to 54 years of experience with the equipment, we of course have the advantage of access to the original prints, machine records, and documentation," says Ron Goltsch, corporate rebuilt/service manager for Dusenbery.

While each machine is customized from an "a la carte" list of available features, Goltsch says a typical Dusenbery slitter retrofit can range from $2,000 to $100,000. Retrofits represent about 15 percent of the supplier's sales volume, on average, over the last five years.

Because the company offers the same service and support for a rebuild as for a new installation, Dusenbery's retrofit business helps keep Goltsch and his staff of eight engineers and technicians traveling the world at a moment's notice.

Goltsch says, in fact, that new customer installations often lead to a retrofit as a follow-up job. "Customers who have bought a new machine from us often take a look at their older equipment and decide they want it to be upgraded to match the performance of the new machine," says Goltsch. "That can mean touchscreen controls, DC or AC-vector drives, etc."

Conclusion

Reaching the conclusion that you need to upgrade your equipment can happen in many ways: viewing new equipment at a trade show, complaints from your operators ("If only this machine could..."), or when prospective customers ask for capabilities that your current equipment can't provide. These reality checks may be surprising and a little disconcerting. While you may have thought you had the perfect mix of equipment, your customers' needs can change seemingly overnight.

But once you've reached that conclusion, you'll find a host of suppliers willing to work with you to see what you need, what the retrofit options are, and what it will cost. Then you're on your way to increased efficiency and higher quality, perhaps for a lot less money than you thought.

 

Supplier writes the book on retrofitting

About every 18 months, Mark McNeal , marketing coordinator for Jennerjahn Machine (Matthews, IN) sends simple white binders to all of the slitter manufacturer's customers.

Inside the binder, titled "Machine Options and Retrofit Guide," is page after page of options and upgrades the company offers to converters who have purchased its slitters—as well as equipment made by its competitors.

Want an Autoloader upgrade? Here's a picture of the equipment, what it will do for you, what's included, and an estimate of what it will cost. How about an Automatic Tail Cut retrofit? That'll be $13,900, not including shipping and installation. Want a Web Separator retrofit for a Dusenbery Model 614? They can do that, too. Tucked into the front pocket of each binder is a faxable form prospects can send to receive a formal quote from Jennerjahn's parts and service manager.

While more and more suppliers are acknowledging and even emphasizing their retrofit capabilities, few have given the process, and its advantages, as much thought as this privately held small-town manufacturer.

"We see retrofits as not only profitable now, but an entrée to future business when the economy turns up," says Chris Jennerjahn. "Our retrofits take from two days to two weeks, and cost from a few thousand to $30,000. We're doing a lot of them."

He won't say exactly how much volume, but does reveal that Jennerjahn engineers performed $500,000 worth of retrofits last year for one customer alone.

"Hopefully, we have a chance to impress retrofit customers with the quality of our work, and when they have the capital budget for a new slitter, we'll be at the top of their supplier list," he concludes.

Teaching an old press new tricks

With 24 plants and reportedly more extrusion lines than any other film manufacturer in North America, converter Pliant Corp. (Schaumburg, IL) is one of the world's largest producers of value-added films and flexible-packaging products. While Pliant's customers come from diverse industries—foods, agriculture, personal-care, medical and industrial—they all share the demand for high-quality packaging at the lowest price.

To achieve this end, engineers at Pliant's Macedon, NY facility, chose last fall to upgrade the drive system on an older flexographic printing press rather than invest millions of dollars in a new machine. Not only did Pliant discover that there was plenty of life left in the old press, they learned a few lessons along the way that will make future retrofitting projects even more successful.

Using high-end flexo technology, the Macedon plant converts high-quality polyethylene and polypropylene films into printed packaging for baked goods, frozen foods, personal-care products, rice, fresh produce, poultry, and sugar. Both new and developmental films run on 17 new and retrofitted presses, including the company's older Paper Converting Machine Co. (Green Bay, WI) Model 5909—a 67-in., 6-color heavy-duty flexo system.

"Because of its width and the fact that it has a coating station—a feature not included on all of our newer presses, we experiment with producing substrates of different thicknesses and poly constructions on this machine," says Richard Knowles, engineering manager at Macedon.

A fixer-upper

While this workhorse is physically ideal for the job, its outdated manual DC-drive system was unable to precisely control web tension and speed after each material change. The solutions were obvious: invest in a new press or retrofit the drives. Because the cost of retrofitting with new AC drives is considerably less, Pliant chose to upgrade the existing machine.

Knowles, a 33-year industry veteran, had worked on many machine retrofits before. He knew that his team, working with Omron IDM Controls, Inc., (Houston) a supplier of AC drives, engineered drive systems and related support services, could successfully upgrade the equipment. "We had worked very well with Omron IDM in the past, and we knew they would provide an outstanding level of integration services and equipment performance," Knowles says.

The design plans called for installation of a flexible, high-performance Omron IDM G5 Series AC-vector drive at each of nine machine sections. The drives are integrated with other controls to ensure proper web tensioning throughout the printing process. In the unwind, for example, an ultrasonic sensor measures the diameter of each incoming roll to match the roll's speed to that of the press, while the rewind drives use a custom program to maintain proper web tension from core to full roll. Each of the nine drives is connected via a Profibus network to an existing Allen-Bradley (Milwaukee) SLC-5/04 PLC, with an added I/O chassis to accommodate the new drive system.

"We faced a few technological challenges, but since my team and Omron IDM have such extensive experience, the challenges we faced were easily overcome," says Knowles.

Making interfaces "human"

While technology upgrades were crucial to achieving quality output, the human factor was nearly as important. Knowles has seen all too many pre-integrated systems with non-intuitive interfaces that required extensive operator training and caused ongoing frustration—both of which cut productivity.

Instead, the layout of the operator interface used with the new drives was carefully planned with the user in mind. When designing the screen layout of the Allen-Bradley PanelView, Pliant engineers and Omron IDM designed a system of buttons along the bottom of the screen in a layout similar to that of the old discrete pushbuttons. In combination with graphical, user-friendly screens, this led to shorter training time and less culture shock among press operators.

"You can't expect operators to just naturally make the jump from manual to automated equipment," Knowles says. "It isn't inherent in people to walk up to a touchscreen and start using it."

Visible results

The retrofitted PCMC press has been running since September 2001, and Knowles reports a dramatic reduction in downtime from the maintenance-free AC drives and decreased scrap due to more precise web tensioning.

Although the need to work with existing automation hardware, software, and infrastructure posed some challenges during the retrofit, Pliant and Omron IDM engineers turned this disadvantage into an opportunity. Writing and integrating new drive control logic into the existing PLC program, redirecting the old I/O into the new logic, and connecting the new drives over the network simplified the wiring scheme on the press and increased networking efficiency. And, by writing a program directly into the AC drives' CASE (Custom Application Software Environment), rather than into a PLC, Omron IDM saved time and costs that they were able to pass along to Pliant.

"We consider this the first of many drive retrofits of our older presses," says Knowles. With benefits like these, who wouldn't choose to teach an old press new tricks?

More information from:

Omron IDM Controls, Inc., 440/729-2232, www.idmcontrols.com Enter 210

Paper Converting Machine Co., 920/494-5601, www.pcmc.com Enter 211

Allen-Bradley Co., 414/382-4444, www.ab.com Enter 212.

Converter builds in automation

In all of our operations we strive to automate and take the controls and dimensioning out of the operator's hand and make them automatic," says Marcelo Norona, chief operating officer of Fralock, a division of Lockwood Industries (San Carlos, CA).

Given that philosophy, it's no wonder that the converter of electrical insulating materials, adhesives and tapes sought a way to automate its rotary die-press operation. Originally, Fralock's rotary die press, supplied by Pace Converting Equipment, was equipped with a manual registration control system. Since Fralock's customers often require labels that aren't fully adhesive coated, it was looking for a system to automatically control these jobs better. Most of its customers order either zone-coated adhesives or adhesives only added in certain areas.

In its search for the right system to add to its rotary die press, Fralock decided on Candy Manufacturing for its Web Master WM-019-1 registration control system. "The Candy registration controls were able to adapt the manual system Pace developed and automate it," says Norona. The results were better tolerances than with the manual system.

"The Pace control system works very well, but if you're trying to do it manually you have to wait for people to change it. This [Candy system] takes a very good control system and automates it," says Norona.

The installation went well and has been trouble-free since, states Norona. "They provided about a day of setup and training. It didn't require a tremendous amount of intensive training," says Norona.

Two methods warn operators that the material is out of tolerance: the press stops altogether or a warning light goes off. "It does warn you when it goes out of tolerance, but it hasn't gone out of tolerance yet," states Norona.

Within months of the Candy installation to the Pace press, Fralock purchased another Pace rotary die press, but instead of having the manual registration control added, it had Pace engineers pre-wire the machine to plug in the Candy registration system. To illustrate how happy Fralock is with its two Candy models, a third one will be purchased. "The third press is on the way. We plan to add the Candy controls on that one as well," says Norona.

More information from:

Candy Mfg. Co., Inc., 847/588-2639, fax: 847/588-0055, www.candycontrols.com Enter 280

Pace Converting Equipment Co., Inc., 216/631-4555, fax: 216/631-7103, www.pace-equipment.com Enter 281.

Avoid these 5 retrofit pitfalls

1. Beware when buying used. "In these economic conditions, we hear about customers looking for used equipment at good prices," says Ron Tobin, sales manager for Dusenbery. "Some have purchased equipment, including used Dusenbery machines, through a broker or online. Then they take delivery of the machine and find out it won't do what they want or what they purchased it for. We always remind people to use us as a resource when they're looking to buy a used Dusenbery. We know the history of every machine, and we can help keep you from buying the wrong machine."

2. Match the retrofit to the desired end result. Is it greater accuracy? Higher speed? Keep your main goal in mind as you discuss your retrofit options with suppliers.

3. Avoid overkill. Don't pay too much for that last percent of improvement in speed or accuracy. "We recently worked on an absorbent packet machine that needed infeed tension controls on two unwinds, direct-drive servo register controls on two dies, and taper tension added to two rewind stands," says Chris Duval of Candy Controls. "The customer's accuracy expectations did not warrant an isolated infeed tension-control stand, or isolated nips on the outfeed tension control. The ultrasonic sensor signal on the outfeed was used to taper the tension on both rewind stands. Although the infeed and outfeed controls would be considered coarse by modern standards, the application reduced waste from over 50 percent to less than one percent.

"A more expensive infeed and outfeed would probably have the controlled the process a little more accurately, but probably would not have decreased his waste much more. This is a good example of a converter taking a good look at his operation and only upgrading the areas need, to the levels required for his product," he says.

4. Don't forget safety upgrades. Your retrofit vendor will let you know which safety upgrades are required as part of the overall project, but you should also consider any guarding, automatic shutoffs, controls, etc. that will allow personnel to operate the new equipment more safely. Also, remember that your operators are accustomed to approaching and interfacing with the machine in a certain way. Make sure they are trained on the upgraded machine as if it were new.

5. Do your supplier homework. Chris Duval cautions converters to use the same criteria when evaluating a retrofit vendor as they would if they were buying a piece of new machinery. Here are some questions you'll want to ask vendors:

  • How long has your company been in business?
  • How long has your company been supplying the type of equipment we need for this retrofit?
  • What is the warranty?
  • What level of technical support can we expect?
  • Will you train my operators and maintenance people on the use of your equipment?
  • Do you have technical staff available by phone to help with problems?
  • Get I get parts overnight if I need them?
  • Will you give me a list of retrofit references that I can call?
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