I've approved more case packer specifications than I'd like to admit, and I've rejected a few machines at the factory acceptance stage after the deposit was already wired. That's an expensive way to learn. When our operations team re-tooled a secondary packaging line back in 2023, the sourcing landed on my desk because I was the one who'd have to live with the thing on the quality side. So, this is the checklist I now hand to anyone at our company who has to buy a case packer. Seven steps. It's written for the person who signs the PO and then owns the consequences—not the person who just wants the fastest quote. Note: This is the process that worked for us, but we're a mid-volume manufacturer running three shifts with a fairly stable product mix. If you're a co-packer with 40 SKUs and seasonal spikes, the calculus is different.

Step 1: Write Down Your Case Specs Before You Talk to Anyone

Most first-time buyers start by calling case packer manufacturers and asking for a quote. That's backwards. The machine is built around your case, not the other way around. Before you dial a single vendor, write down: case dimensions (all three, plus tolerances), case weight range, board grade, the number of cases per minute you actually need at your bottleneck—not your ideal—plus your available floor space and utilities. Why does this matter? Because a wrap around case packer and a robotic case packer solve different problems, and a vendor can't tell you which fits until they know your volume and format. If you send vague specs, you'll get a vague quote. And vague quotes are where the hidden costs live.

Step 2: Match the Machine Type to Your Real Bottleneck

There are three families you'll run into most.
  • Wrap around case packers form the case around the product. Great for stable, uniform products and moderate speeds, and generally lower cost per case.
  • Robotic case packers pick and place. Flexible with product orientation and mixed formats, but you're paying for the robot, the vision system, and the integration.
  • High speed case packers are built for continuous lines. Fast, but they're the least forgiving of format changes.
Speed, format flexibility, price. Pick two. I've never seen a machine deliver all three at a number anyone with a budget would call reasonable. The step most buyers skip: they chase the headline speed number and never ask about changeover time. More on that in Step 6.

Step 3: Screen Manufacturers on Build Quality, Not Price

Prices for what looks like the same machine can vary by 40% or more. I've seen it. Same nominal speed, same case range, wildly different quotes. Here's the thing: a huge spread usually means the machines aren't actually the same. Look at the frame gauge, the servo brands, the guarding, the safety circuits. Ask whether the machine complies with ANSI/PMMI B155.1—the packaging machinery safety standard. Verify the current edition with PMMI before you write it into a contract. Red flags I've learned to spot:
  • No list of standard-issue components (they're hiding something)
  • 'We can customize anything' with no engineering drawings to back it up
  • A willingness to skip safety guarding 'for speed'
One manufacturer we screened sent a spec sheet with the safety relay model left blank. That was a deal-breaker for us.

Step 4: Ask What's NOT Included in the Quote

I've learned to ask 'what's not included' before 'what's the price.' The quote that looks cheapest is usually the one with the most gaps. Common exclusions on a case packer quote:
  • Change parts and format tooling
  • Installation and commissioning
  • Operator training
  • Utility connections (air, power, sometimes guarding)
  • Extended warranty or spare parts package
  • Freight and rigging
A vendor who lists every one of those upfront—even if the total looks higher—usually costs less in the end. The one who quotes low and then adds thousands in 'commissioning' two months later isn't cheaper. They're just slower about it. My rule: any line item that appears after the PO is signed is a line item I should've seen before it was signed.

Step 5: Lock Down the FAT and SAT Protocol in Writing

The factory acceptance test (FAT) is your last clean chance to walk away. Get the protocol into the contract, not into an email a week before the test. A workable FAT should include:
  • Running your actual cases, at your actual speed, for a minimum duration
  • Changeover between at least two formats
  • Documented reject rates and jam recovery
  • A signed checklist both parties agree to before the test date
Honestly, I'm not sure why some manufacturers push back on a structured FAT. My best guess is that it forces them to commit to line performance before they've fully debugged the machine. Which is exactly the point. The site acceptance test (SAT) matters too, but by then the deposit's gone. Treat the FAT as the decision point.

Step 6: Pressure-Test Changeover and Format Flexibility

This is the factor most buyers completely miss: changeover time. If you run one product, skip this section. If you run three or more, this is where the machine makes or loses its money. A high speed case packer that takes 90 minutes to change formats will eat the speed advantage on any run shorter than a full shift. Ask:
  • How long does a format change take, with one operator, no tools?
  • Which parts need swapping, and are they tool-less?
  • How are recipes stored and recalled?
The 'faster is always better' thinking comes from an era when most lines ran a single product and changeover was an afterthought. Today, with shorter runs and more SKUs, changeover time is often the spec that decides whether you actually hit your target throughput. I can only speak to our own mix, but for us, a 10-minute changeover was worth more than 20 extra cases per minute.

Step 7: Confirm Spare Parts, Service, and Training Before You Wire the Deposit

Post-sale support is where cheap machines get expensive. Before you pay:
  • Get a recommended spare parts list with lead times for the top 10 wear items
  • Confirm the service response window in the contract, not verbally
  • Confirm who does the training and where (on-site beats 'we'll send a PDF')
  • Ask for two customer references running similar formats—and actually call them
If a vendor can't give you references, that's a red flag. Not necessarily a deal-breaker, but a red flag.

Before You Sign: Common Mistakes

A few things I've watched people trip over:
  • Skipping the case spec sheet. The number one cause of a machine that 'doesn't quite fit.'
  • Buying on speed alone. Speed you can't use, and changeover you didn't plan for.
  • Signing a PO before the FAT protocol exists. Once it's signed, your leverage drops.
  • Not budgeting for change parts. Your second format costs money. Plan for it.
  • Assuming the low quote includes what the high quote includes. It usually doesn't.
Bottom line: sourcing a case packer is a specs problem before it's a pricing problem. Get the specs right, demand transparency on what's included, and verify performance before the deposit leaves your account. The machines that save you money over ten years are rarely the cheapest ones on the quote sheet. Prices and lead times in this space move constantly—get current quotes for your specific specs, and verify any safety or compliance standard with the issuing body before you write it into a contract.