10 Questions You Should to Know about Carton Case Erector

24 Mar.,2025

 

Understand the Importance of Case Equipment and How it Can ...

You've done your market research, created a product that your customers love, and implemented world-class production with top-notch quality. Now there is only one thing left to do ' pack the boxes and ship the product. What are my options for case erecting, packing, and sealing? Should we just manually build and load the boxes, or should we completely automate the process?

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The reality is that case packing, and the integration of end of line packaging equipment, falls on a continuum from fully manual to fully automated. It's important to know what all of your options are so you can choose the best solutions for your specific situation.

Manual Case Erecting And Packing

Building and packing cases by hand have some obvious benefits that include:

  • Requires little training and operators can be up and running quickly
  • People can easily adjust for case variations
  • Easy to inspect products, load into packaging and adjust as needed

However, there are negatives to manual packing and erecting operations, most notably:

  • Ergonomics and repetitive motion injury risk for operators
  • May need multiple people to maintain required run rates

Fully Automated Case Erecting, Packing, And Sealing

Fully automating case erecting, case packing and case sealing sounds great in theory. This type of set up is used extensively for high volume, low variation end of line situations. For these applications, automation reduces headcount and increases packaging line output.

If the products and packaging are very consistent and run at high volumes, then full automation may be the answer. Case and product variations, however, can cause problems like jamming and stop production.

Another downside of full automation is that the machines necessary to fully automate need to be purchased and integrated into your existing set up, which is expensive and requires skilled operators to set up, run and maintain the equipment. There is also a time overhead to design, build, integrate, install, test, and debug a fully automated system.

Once up and running full automation also requires maintenance and things like spare parts and downtime for preventive maintenance.

But 100% automation isn't possible for every situation. Something as simple as putting products in a box can have its challenges, particularly when the products are irregular, complex, or expensive. In these circumstances, conventional pick and place automation often doesn't work well or can be expensive.

Somewhere In Between

What if case erecting and sealing are automated, consistent, and the packing is done by hand?

A middle ground approach to automation allows the machines and people to do what they do best. The human/machine combination is the best of both worlds in that it incorporates what machines do best ' rote work ' and what humans do best ' make judgments.

People are flexible and when guided by informed judgment, they can deliver adjustments on the fly. An operator can inspect products as they are picking it up, and then insert it properly into a case or remove it from the line for future re-work or inspection. People make adjustments on the fly and deal with a wide variety of situations without causing the line to stop.

A combination of people and automation works for low to moderate volume applications of up to 10 cases per minute.

A few other things to consider when deciding on manual and automated case packing are:

  • On average, a medium-sized case can be erected and sealed by hand in 20 seconds per unit. How many cases per minute do you need?
  • How big are the products going into the case?  If large, or small and delicate, case packing will slow down.
  • How many people do you have available to erect, pack and seal cases?

There are potential issues with a mix of manual and automation including the need to maintain the automation, the need for some mechanical infrastructure (like clean, dry air) and carrying spare parts for the equipment.

Manual Vs. Automation: Questions To Ask

  • Evaluate the tradeoffs of costs of capital vs. hourly labor.
  • Are you running regular daily production?
  • Determine the speed tradeoffs of manual vs. automation.
  • How many cases per day? (Approximately 500 cases per day are needed for hybrid solution.)
  • Do you have few changeovers?
  • What is the impact of case quality and reduced defects in packing of goods?
  • How many people do you have packing and making cases? (If 4 to 8 operators, consider the hybrid approach.)
  • Do the net gains outweigh costs?

There is no one right way to build cases, pack them, and seal them for shipment. Instead, there is a range of options, and a hybrid approach can yield the best return in many situations.

If you would like to talk to one of the experts at Lantech to discuss the right approach for your end of line packaging requirements, please contact us.

The Law Of Unintended Consequences Is Alive And Well

Erecting cases with a machine will not automatically guarantee an increase in productivity. Without proper planning and consideration, a case erector can cause unanticipated problems and even turn out to be counterproductive. In the worst situations, production is constantly interrupted to recover from unplanned downtime or machine jams.

Why Bottlenecks Happen

There are many environmental factors that affect the performance of corrugate, particularly as it moves through a case erector ' temperature, humidity, storage conditions and degree of warp, for example. And, of course, there's the manufactured quality of the case blanks themselves ' dimensional accuracy, depth of score lines, thickness (single wall, double wall), flute size and amount of recycled content. All of these factors affect the ability of the machine to produce a square case and to do it without jamming.

Additionally, relentless cost pressures and sustainability concerns are causing manufacturers to use:

  • Thinner corrugate.
  • Recycled corrugate.

These new generations of cases increase the ample environmental challenges that case erectors already face and can contribute to excessive machine jams and lost production instead of the intended benefits.

Knowledge, Experience And Anticipation Overcome Problems

But just because something isn't easy doesn't mean it's impossible. Today's best machines manage to overcome these challenges, make square cases, do so without jamming and deliver the intended productivity gains. Here's why:

  1. The designers of these machines have a deep understanding of corrugate ' both its strengths and weaknesses. They make machines that anticipate and overcome the environmental variations case blanks are exposed to. They force the case to open so it's square and then fold and seal it so it's rigid and the squareness is locked in.
  2. They manage and control the case through the entire erecting and sealing process. Again, understanding and anticipation are key. Every time a blank or a case moves, there's the potential for something bad to happen. Effective case management is both an art and a science. Experience and good design, consistently refined, combined with a deep understanding of the corrugated medium virtually eliminate jams.

Preparation Is The Key

Just to be on the safe side, a case erector should have 10 percent more capacity than the primary production line. Don't forget Murphy's Law. It says, 'If something can go wrong, it will.' And usually at the worst time. No matter where you go around the world, almost everyone has a similar saying.

So be prepared. Build-in enough capacity to recover from unplanned downtime events like:

  • Changes to different case sizes
  • Tape breaks
  • Tape changes
  • Power outages
  • Upstream or downstream problems

Good planning and sound implementation result in case erectors that are true assets instead of production bottlenecks. Properly deployed, they boost productivity while reducing costs and damage by ensuring that the commonplace corrugated case ' that critical tool for supply chain efficiency ' delivers its intended value.

There's no simple answer to that question. But basically, they jam because something bad happens during the case erecting cycle. Think of it like this: similar to a butterfly, a case goes through a kind of metamorphous. It starts out as a blank, which is a flat, die-cut piece of corrugated material and emerges from a case erector as a fully formed, bottom sealed case ready for use.

The case erector's part of this metamorphosis is to take the blank, erect it (form it), and seal the bottom flaps (with either tape or hot melt adhesive) of the emerging case. Properly done, the newly erected case is 'square' ' all corner angles are 90 degrees ' and the case is ready to do the job its designers intended:  be easy to pack and stack and provide maximum protection for its contents.

This is a little trickier than it might seem at first glance. Lots of things have to happen in sequence and on time. For example,

  • The blank must be loaded into the case erector's magazine.
  • The blank must transfer from the magazine to the forming section.
  • The blank must be formed and squared.
  • The bottom flaps must be folded.
  • The bottom of the case must be sealed.

So anytime a blank moves or makes a transition to another section of the case erector, there's the potential for that 'something bad' thing to happen that might cause the machine to jam.

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The best case erectors, though, are designed to manage these transition points and overcome the risks associated with them. Top performing case erectors, for example, use powered infeed belts in their magazines to precisely control the movement of the blanks as they move to the forming section. This overcomes the variability of unpowered, gravity-fed magazines that have little or no control over the blank and consequently are much more likely to jam.

Top product development teams also pay careful attention to the design and operation of the blank separation mechanism to ensure that only one blank at a time is released to the forming section. Poor designs in this critical area are notorious for causing jams.

The actual transfer of the blank to the forming section is a transition that's also high risk. Not only must the blank separate cleanly from the magazine, but it must also open correctly so the adjacent sides are perpendicular and the opposite sides are parallel. The best case erectors do this by using a 'vacuum pick-up frame.'

This device has adjustable vacuum cups that firmly hold two panels of the blank and the frame itself forces the blank to open into a correctly formed square case. Pick-up frames are particularly effective in overcoming minor manufacturing variations in blanks ' they force the blank to open correctly. This is another example of how proper attention to and management of critical transition points reduce the potential for jams to happen.

Once the case is square, that 'squareness' needs to be locked-in by folding its bottom flaps. Trying to do this while the case is moving is hard and often results in a jam. It's best to use a machine that folds the bottom flaps while the case is stationary. This is another example of how maintaining control of the case can reduce the potential for jams and how a square case is delivered to the sealing section ' another critical transition point.

Sealing sections consist of a pair of belts that hold the case's long sides (its length) and convey it over a tape dispenser or a hot melt glue nozzle that seal its bottom flaps. Minor differences in case widths caused by manufacturing variations in the blanks can result in jams.

If the case is too wide or too narrow when it reaches the side belts, a jam is likely unless precautions are taken. The better machines deal with these issues by 'spring loading' the side belts so they can move closer together or farther apart to deal with either condition, yet still hold the case securely enough to move through the section and be effectively sealed.

A Brief Note About Case Quality

There are a host of issues surrounding corrugated case quality. But for the purpose of this conversation, it's worth noting that there's a trend today toward using thinner board and more recycled content.

These cases challenge the capabilities of many case erectors and, in many instances, result in unacceptable and unnecessary levels of downtime. In today's environment, the quality of the case erector is more important than ever in helping companies achieve their cost reduction and sustainability goals.

Any reputable case erector manufacturer will be happy to test your cases on their machines and work with you to ensure the benefits of your case erector are fully realized.

If you've been considering a case erector for your production line, here are five benefits a case erector can offer your company.

  1. Increases productivity

The average worker erects three boxes every minute. A basic case erector can produce 10 boxes per minute. That's a productivity increase of 233%. Faster machines increase productivity even more.

To make 2,500 cases, it takes almost 14 hours of time to erect them by hand. With a case erector, your time is reduced to only four hours. What could you do with ten extra hours?

  1. Reduces operational costs

Similarly, if you find you're adding workers to the packing area because they can't all keep up, you may discover that by having boxes being made quickly and easily, your packers work much more efficiently. That means you can reduce overtime, or reassign the labor pool, so the extra people can work elsewhere.

  1. Reduce repetitive strain and the possibility of injury

Anyone who performs the same task over and over again knows the pain of repetitive strain injury. Also, multiple cuts and lacerations can result from contact with the edges of the cardboard or exposure to the blade in a hand-held tape dispenser. Using a case erector greatly reduces the risk of workers injuring themselves, or suffering repetitive strain injury.

  1. Reduces inventory

If you've ever had your workers erect dozens or even hundreds of boxes in anticipation of a large shipment, you know the headaches of trying to find space for all of those empty boxes. You're basically paying to store a whole lot of empty! Each box takes up valuable floor space if you have to regularly pre-assemble boxes just to keep up with a large product flow.

Since you know that pre-ordering raw materials or pre-erected finished products wastes space, you'll understand how pre-erecting boxes does the same thing.

  1. Reduces shipping damages

In a previous blog post on case erectors, we talked about how hand erecting cases can often lead to unsquared boxes, which are weaker when stacked on a pallet. But square boxes can withstand heavier weights, which means they are less prone to shipping damage. Using a case erector can help ensure products arrive intact and undamaged.

The main objections to case erectors are that they jam easily and cause downtime. When erecting a high number of cases daily in a production line, this can be a major frustration. There are four primary reasons case erectors jam:

  1. Blanks are not fed correctly into the magazine.
  2. Irregularities in the blank from the carton supplier.
  3. The mechanical forces of opening the case and folding the flaps.
  4. Transporting the formed case through the machine.

Find out how to can overcome these problems and what to look for in a case erector that will not only erect perfectly square cases, but will also not jam.

A case erector might seem like an unnecessary extravagance. But when you look at the extra cost and time lost in unproductive work, overtime and injury, you begin to see the benefit a case erector can bring to your company.

What Is A Case Erector? - Sting Carton Sealer

Have you ever wondered what is this product everybody in the packaging industry seems to rave about? A case erector has become quite a necessity in today's world. With a need for a quick set up of cartons and boxes, comes the case erector. It seems like an intimidating name of a machine but it has the simplest function.

So quite simply, Case Erectors are machines that give a shape and form to flat cartons or boxes. They help give those flattened cardboard pieces the three-dimensional form of a box by taping the bottom and making the box stand.

Hence, they are also referred to as bottom tapers sometimes.

The Types of Case Erectors

There are just two types of case erectors out there:

  • Automatic Case Erectors
  • Semi-Automatic Case Erectors

Here's what you need to know about both types:

Why Do You Need A Case Erector?

  • You'll increase productivity by 100% when you use a machine in place of an actual person who works as a case erector. An average person might do 3 boxes in a minute, a case erector can top that by three times the speed.
  • There remains no place for human error. The machine will make sure each box is identical to the other and they all will have a uniform appearance.
  • You'll save so much money because the case erector does not get sick, doesn't take off days, and does its work fast and efficiently.

Customized Case Erectors

We not only provide you with industrial-grade, high-efficiency machine but we also help you customize your case erectors to the max. We can help out with all your specific needs such as the size of the folded carton holder for maximum number, the kind of tape you'd like to use for the bottom, and any other customization you require.

What To Look For In A Good Case Erector?

Remember, with several companies out there offering you many case erectors, there are always a few things you need to keep a lookout for. They are as follows:

Want more information on Carton Case Erector? Feel free to contact us.

  • Always check what kind of speed option your case erector offers.
  • Check if the carton transfer is trustworthy and reliable.
  • Check for internal systems that ensure proper squaring of the carton.
  • How quick is its change over and does it require additional tools?
  • Does it only form the carton or does it seal it too?
  • Will the carton get damaged if it strikes the moving parts or is there a movement restriction for it?