Palletizers and depalletizers are the muscle behind packaging lines, handling everything from neatly stacking cases on pallets to efficiently unloading them for filling. In this Package This episode, explore the latest in mechanical and robotic palletizing technology—including high-speed in-line systems, space-saving cobots, and hybrid solutions that adapt to your production needs.In less than five minutes, you’ll find out how these machines boost efficiency, improve safety, and keep supply chains moving. Watch now to see palletizers and depalletizers in action!
Hey there! Welcome back to Package This!
If you could name one group of machines that does the “heavy lifting” in packaging, it would likely be palletizing and depalletizing systems.
Palletizers stack cases, sacks, and other bulk packages onto pallets at the end of the line, preparing them for stretch wrapping and distribution. Depalletizers work in reverse, unloading products at the start of filling lines.
Today’s palletizers generally fall into two categories: conventional, or mechanical, systems that use conveyors and lifts to stack product, and robotic palletizers that use articulated arms for added flexibility.
High-Level Conventional Palletizers
High-level conventional palletizers operate at an elevated level, often on high-capacity production lines where speed and the ability to handle large volumes are paramount. High-level infeed conventional palletizers, like this one from Columbia, are generally faster and have a comparatively smaller footprint than mechanical floor-level palletizers, which we will see in a minute.
These machines are engineered to handle virtually any package type with modular layouts and gentle product handling. Another advantage: all of Columbia’s conventional palletizers come with advanced Product Manager graphic-based HMI for unlimited pattern-forming capabilities and zero time/zero tool changeovers.
Floor-Level Palletizers
Now let’s bring it back down to eye level with floor-level, or low-level, palletizers. These systems are a great fit for smaller operations or lower-volume lines, keeping production moving while staying fully accessible from the plant floor.
Built for durability and flexibility, floor-level palletizers are often modular in design, making them ideal for tight spaces and existing layouts. They can handle a variety of package types and pallet patterns, and their straightforward setup makes installation, operation, and maintenance simple and efficient.
In-line Palletizers
In-line mechanical palletizer machines, designed for medium to high-speed operations and multiline applications, divides cases or bags as they flow into the layer forming area, delivering precise positioning of packages and ensuring accurate placement until a layer is complete and transferred onto the pallet.
Robotic: Cobots & Mobile
Now we turn to robotic palletizers—an option for many brands seeking greater efficiency and flexibility—starting with collaborative robots, which have grown in popularity in recent years.
Collaborative robots, or cobots, are compact, mobile robotic systems designed to work safely alongside human operators. In palletizing applications, they are often used for low- to moderate-volume, floor-level tasks and can be easily repositioned between production lines as needs change. Their flexible, modular designs make them well-suited for facilities looking to automate without major infrastructure changes.
Equipped with advanced sensors and safety features, cobots are configured to detect nearby personnel and adjust their operation accordingly. This helps CPGs maintain their end-of-line workflow while supporting a safer working environment.
Other robotic palletizers
Some other robotic systems include pick-and-place robotic palletizers. These robots swing back and forth from a pick area to place them on a pallet, stacking row by row.
Layer forming robotic palletizers take products fed into the palletizing area on conveyors and arrange them into layers with end-of-arm tools that turn and push boxes neatly and efficiently.
Row forming robotic palletizers group boxes or cases together and as they accumulate are formed into a single row unit that is lifted together onto a pallet.
Also on the robotic palletizing market, you may find hybrid robotic palletizers, which combine any of the technologies we mentioned into a single, customized robotic palletizer.
Depalletizers
Finally, just as palletizers stack products onto pallets at the end of the line, there is a dedicated set of machines that does just the opposite. Depalletizers are specialized robotic or mechanical machines that take empty containers such as plastic or glass bottles from pallets, transferring them directly onto a conveyor or another handling system for cleaning and preparation before filling.
And there you have it, an overview of what palletizing and depalletizing machines are all about.
Thanks for sticking around to learn about palletizing and depalletizing equipment. For more videos on packaging equipment and supplies, subscribe to Packaging World’s Youtube channel and get all of the videos in the Package This series.
And if you’re looking for palletizers or other equipment, visit PMMI ProSource at ProSource.org, a searchable directory of North America’s top packaging and processing solution providers.
Until next time, keep on packaging!
