Getting the Most from Checkweighers and Secondary Packaging Equipment

Secondary packaging and checkweighing equipment can both add versatility and yield useful data.

By Pan Demetrakakes, Senior Editor

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Food retailers are calling for a lot from secondary packaging. And processors can heed that call by listening to their end-of-line equipment.

Demands for versatility in secondary packaging are more intense than ever. Many retailers – and not just among the rapidly growing discount sector – want cases, if not pallets, that they can put on the shelf or floor with little or no preparation. They want specialized small loads, often mixed, and many of them want their primary packages arranged in unique ways.

“I think with our customers, the biggest priority right now is for them to find a solution for the retail-ready environment,” says Peter Fox, senior vice president of sales at Somic America ( “So basically what they’re looking for are different ways that they can effectively produce their secondary packaging, their case, so that it is easy for their end user to be able to use and display on shelf.”

Jerry Buckley, a regional sales manager for BluePrint Automation (, agrees. “It really comes down to, our customers are pushing us more toward packages that are shelf-ready,” he says. “They used to just package things in an RSC [regular slotted container]. Now they want the case to be the display tray. They want versatility where it could be a single product on a shelf, and what used to be lying flat now needs to stand up vertically, or it could be double rows of products.”

Versatility in packages means versatility in machinery, especially when package configurations increase but the number of packages in each configuration goes down.

The requirements are “flexibility and scalability. What’s driving the end users is all being driven by the retailers,” says Henk Hoogendoorn, global sales manager of Hartness International ( “We’re seeing a reduction in case count sizes, which means more packages per minute, because they’re going from 12- and 16-counts down to eight, which is also being driven by the dollar-type stores which have smaller shelf spaces available. We see flexibility and scalability, because people don’t know what their package format’s going to be in the future.”

Versatility encompasses more than just how many primary packages go into a case. Some retailers want packages with covers that can tear off, leaving a display-ready tray. Some even favor cases that split apart lengthwise, with the halves folding outward into parallel displays.

Somic recently introduced the Flexx III, an addition to its 424 series of end-of-line machinery that combines case erecting, filling and closing. The Flexx III can do any arrangement or orientation, and can use a robot to pick and place primary packages like pouches into a case as an alternative to forming the case around them.

Talking points

Where omnibus equipment like the Flexx III is not an option, enhanced communication can help machines perform end-of-line functions in tandem with maximum efficiency.

The Ishida unit of Heat and Control ( offers a turnkey packaging system for bagged snacks like potato chips that comprises the Inspria bagmaker, the Thickness Seal Checker and the ACP-700 case packer. All of these machines can be bought and operated separately, but when used together, they allow feedback loops for continuous communication and correction.

When the seal checker, in the middle, detects a change in the thickness of the bags, meaning a change in the amount of air in the bag, it can signal upstream to the bagger to adjust the air in the fill, and downstream to the case packer to change indexing and belt speed to accommodate.

Communication is also important between equipment and operator. As machinery becomes more versatile and therefore more complicated, making the controls comprehensible becomes more of a challenge.

“We want the customer to be able to take the machine, have a fairly untrained operator change the machine over and understand what they’re doing, and get feedback if the machine is not adjusted correctly,” says Jason Enninga, vice president of sales at the Brenton Engineering unit of Pro Mach (

Brenton’s new M2000 case packer, which replaces its Mach 2, comes with both manual and fully automated options. The manual version can include programmable settings, with LED interior lights that indicate when parts are adjusted properly for a particular setting. The fully automated equipment uses servos to move all adjustable parts into position for changeovers.

The last option adds between $50,000 and $100,000 to the machine’s cost, and is mostly for the biggest customers, Enninga says: “It’s really the Fortune 500 guys that see the value of [fully automatic] changeover.” The majority of customers go for the manual option, which not only guides manual adjustment of components but helps pinpoint what went out of whack when a stoppage occurs.

Harpak-ULMA is so committed to better communication that, at the 2018 Pack Expo, it announced a strategic partnership with Rockwell Automation to enhance its production of what CEO Kevin Roach called “smart, connected” equipment. This alliance will enable better onboard diagnostics, safety technologies and generation of production data, and generally make it “easier to install, integrate, optimize and maintain any packaging line,” Roach said.

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