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At the Forefront of Innovation: 40 Years of Low-Acid Aseptic Packaging

July 7, 2021

Scholle IPN Celebrates 40 Years of Low-acid Aseptic Packaging, Revolutionizing How We Safely Store and Transport Essential Items

Scholle IPN Aseptic Bag-In-Box Historical PhotoIn the early 1950s, Scholle IPN invented the bag-in-box and revolutionized the way we package goods. Since then, we have continued to find innovative and game-changing ways to utilize packaging technology to transport food safely while reducing our environmental impact. One of the industry’s biggest game changers is the advent of low-acid aseptic technology.

Scholle IPN began utilizing low-acid aseptic filling technology 40 years ago. Aseptic packaging introduces a sterilized product into a sterilized package and requires no refrigeration and no preservatives. The challenge with low-acid items—think milk, a low-acid product, versus tomato sauce, a high-acid product—is that their pH levels aren’t low enough to ward off bacterial growth on their own. This makes packaging these products a challenge. Before low-acid aseptic technology, the only way to package low-acid items to keep them shelf-stable was to add preservatives or to use hot-fill or retort. While both methods are effective in preventing bacterial growth, they require packaging that can withstand high heat, like aluminum and glass, extracting more resources from the planet. They also have a greater effect on product quality.

Neither of these solutions were ideal, so we wanted to find a way to give our customers clean, unsullied food while reducing the environmental impact of the packaging needed for low-acid foods. Low-acid aseptic filling makes it possible to package items like baby food or milk safely while significantly reducing the amount of packaging needed to protect them.

Leading the Evolution of Aseptic Technology

Early Scholle Filler AdLow-acid aseptic technology has had a significant impact on our global food supply. What differentiates our low-acid aseptic fillers is that they can do it all—at Scholle IPN, we can provide low-acid aseptic solutions for retail, industrial, and institutional settings that completely cuts out the need for cold storage.

“Our low-acid aseptic filling equipment is second-to-none in the industry,” says Chip Halverson, Regional Commercial Director at Scholle IPN. Halverson has been in the packaging business for over twenty years, and has seen the potential that low-acid packaging has to improve the food supply while minimizing our environmental footprint. “It is clean. It does everything that anyone in that type of processing wants.”

From the start, low-acid aseptic technology offered a significant upgrade to the way we consume and transport food. We’ve evolved this technology from a slower, steam sterilization system to industry-leading, efficient system called Vapor Sterilant Technology (VST) and saw significant improvements in how quickly a filler could package a low-acid product. “We’re now seeing filling speeds up to three times as fast as when I came on board at Scholle IPN. In addition, our fitment range has diversified greatly from standard flat-cap dairy bags to assorted connection systems, hoses, and ergonomic taps.”

Low-Acid Aseptic: Second-to-None

The Aseptic Process for Flexible PackagingThe benefits of low-acid aseptic technology are felt both inside the package and out. It’s clear that being able to package and store sensitive food items without preservatives is a win, but eliminating the need for refrigeration means cutting out cold storage throughout the distribution stream. “What low-acid packaging does is it takes the product out of the refrigerated supply chain,” Halverson says. “Those are huge savings because [restaurants] don’t have to refrigerate the product. And if you go to any restaurant, you know storage is a tight commodity.”

The importance of low-acid technology is really felt when you extrapolate outward. There are hundreds of thousands of restaurants in the United States alone—and the restaurant industry is just a small sliver of where low-acid packaging can make an impact. “[Low-acid] has basically changed the baby food market—before low-acid, all of those products that were in pouches were treated with heat. So you’re eliminating the vitamins and the texture and the nutrients in baby food this way,” Halverson notes. “To use low-acid aseptic technology to pasteurize baby food and put it into a pouch without preservatives is a big deal.”

Halverson sees low-acid aseptic transforming other industries. “I hope to see coffee shops use low-acid packaging for their nut milks,” Halverson says. “A one-and-a-half-liter of cashew milk, or oat milk, or whatever milk you’d like with a tap offers the convenience of no air getting to the product. What we offer to the wine industry would be offered to the dairy industry. You wouldn’t have to throw an unused half carton of milk away because you didn’t have enough customers that day.”

We’re proud of the work we’ve done with low-acid aseptic technology over the last 40 years and are excited to see what the future holds. Scholle IPN plans to continue to be at the forefront of low-aseptic technology—find out how you can incorporate low-acid aseptic as part of your packaging solutions.

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