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Report: Innovative new materials at PACK EXPO

Covering 1.2 million net sq ft of exhibit space and drawing 2,500 exhibitors, PACK EXPO International brought 50,000 attendees to the biggest packaging event of the year. Here is our report on new materials.

PACK EXPO International
PACK EXPO International

Each year the editors at PMMI Media Group roam the aisles of PACK EXPO looking for the next big thing in the packaging sector. Of course, with a show this size it’s never one big thing we find but rather a multitude of things big, medium, and small, all of them innovative and meaningful in one way or another to packaging professionals of today.

This report sums up what we found in six main categories. We present them here for your review knowing full well that, inevitably, we missed a few. Probably more than a few. That’s where you come in. Let us know what we missed and we’ll look into it. Or at the very least, we’ll know to be on the lookout for it at the next PACK EXPO.

Our report comes to you from the following:

Matt Reynolds, Editor, Packaging World

Pat Reynolds, VP Editor Emeritus, Packaging World

Anne Marie Mohan, Senior Editor, Packaging World; Editor, Contract Packaging

Stephanie Neal, Senior Editor, Automation World; Editor-in-Chief, OEM

Joyce Fassl, Editor-in-Chief, ProFood World

Maya Norris, Managing Editor, ProFood World

Natalie Craig, Managing Editor, OEM

Jim Butschli, Editor, Healthcare Packaging

Keren Sookne, Director of Editorial Content, Healthcare Packaging

MATERIALS

SUSTAINABILITY
Asia Pulp and Paper joined with its North American strategic partner Charta Global at PACK EXPO to showcase new food-grade, recyclable, compostable, and biodegradable foodservice packaging (1). The need for such materials was explained in recent research conducted by the firm, says Christopher Wong, VP, Export Sales, Industrial White BU – APP Indonesia. The research, 2018 Paper & Packaging Consumer Trends Report, found that 65% of consumers agree that sustainable food packaging is more important to them today than it was five years ago. This holds especially true among baby boomers (67%) and millennials (66%).

Says Wong, “Consumers are becoming more aware of the transfer of chemicals into food from plastics, and they are becoming more aware of the renewability of paper.”

In response, APP has developed new Bio Natura foodservice packaging products under its foopak line. The products are made from 100% compostable, recyclable folding boxboard that is suited for fast-food, takeaway containers, and hot beverage cups. Other products in the suite include grease-proof papers, boards, and bakery liners. At the show, APP exhibited its coffee cup and food container products.

As Wong and Regional Sales Head Atul Tyagi explained, typically coffee cups and foodservice containers incorporate a polyethylene film liner, which prevents them from being recycled. Early alternatives included cups lined with PLA; this material, however, could not withstand high temperatures. APP’s cup stock can sustain heat up to 440°F/220°C, and because it is made with a water-based coating, it is fully compostable, biodegradable, and recyclable.

Foopak Bio Natura cup stock is FDA-certified and meets the FTC’s Green Guides for biodegradability and compostability. Testing by the ISEGA Institute shows scientific evidence the stock can completely break down and return to nature by decomposing in a matter of 12 weeks. Additionally, Bio Natura can be safely composted in a facility or home compost pile.

The interlocking food container, which can be used for cold and hot applications (it is even microwavable) is now available in the U.S. The cup stock is available as well, but APP is working to reach the converting speeds required by most large foodservice companies.

GREASE-RESISTANT PAPERBOARD
Eco-barrier paperboard, also known as MetsäBoard Pro FSB EB1 (2), was featured at the booth of Metsä Board Americas Corp. Technical Service Director Heli Kuorikoski showed one of the first commercial applications of this Folding Box Board (FBB): a windowed carton for sandwiches sold by Finnish artisan bakery Huovisen Leipomo.

The appeal of MetsäBoard Pro FSB EB1 is that it has no PE coating for grease resistance. Instead, it gets its grease-resistant properties on the board machine that Metsä Board uses to transform fiber slurry into paperboard. Metsä Board adds a grease-resistant treatment with bio-based and natural components to the reverse side of the paperboard that does not interfere with the board recycling process, yet gives the board relatively light grease resistance comparable to a Kit Level 5. (The Kit test, or Tappi T559, measures paper’s degree of repellence. For more details, please visit: pwgo.to/3945). Kuorikoski emphasizes that the Kit test has primarily been designed for papers and boards treated with fluorochemicals and is not really suitable for water based grease-resistant coatings. She prefers to talk about low, medium, and high grease resistance levels. A light grease resistance comparable to a Kit Level 5 makes the board suitable for short food-contact time, for items such as foodservice hamburgers or French fries. Kuorikoski adds that if greater grease resistance is required, a varnish can be added by the carton converter.

The 8-oz sandwiches sold by bakery Huovisen Leipomo need to last about four days in a refrigerated display case, typically in a convenience-store or grab-and-go setting. When the sandwiches were first launched, a carton board with a PE coating was used because a high grease resistance comparable to a Kit Level of 12 was required. But there were two problems that the bakery’s owners faced while using a standard PE coating. First, the layer of plastic made the carton unsuitable for the paperboard recycle stream. Second, the PE-coated carton trapped so much moisture that condensation would form on the clear window, thus preventing the consumer from seeing the sandwich inside.

So Huovisen Leipomo started using paperboard from Metsä Board that had neither PE coating nor the special treatment that gives MetsaBoard Pro FSB EB1 its grease resistance. After sending the paperboard through an offset press for printing, the carton converter
OffsetKolmio found that by sending it back through the press two more times for a coating of varnish on the reverse side, the paperboard exhibited all the grease resistance it needed.

The use of varnish coatings solved the problem of condensation, because unlike the PE coating, the varnish-coated board was able to breathe. It also met the bakery’s wish to have a biodegradable carton. But converter OffsetKolmio quickly realized how time-consuming and costly it was to send the board through the offset press three times.

Enter MetsäBoard Pro FSB EB1, a new development from Metsä Board. Because its special treatment gives it a grease resistance of a Kit Level 5 when it exits the board machine, it only needs to have varnish applied to the food-contact side once to bring it up to a Kit Level 12. The elimination of one whole step in the carton converting process brought significant savings. Added savings were achieved because 50% less varnish needed to be applied.

“We were able to reduce our costs without compromising the quality or grease resistance of the board,” says Kimmo Jokinen, Managing Director of OffsetKolmio.

One other notable development coming out of Metsä Board is what the firm refers to as a “revolutionary new paperboard cup design concept called Lidloc.” The patented design (3) is based on an extension to a standard cup structure that folds and locks into an integrated lid. This removes the need for a separate plastic lid. The container is spill-proof and offers extra branding opportunities as it can be printed as one piece with the rest of the cup. Metsä Board notes that Lidloc was recognized recently for design excellence and creative achievement by being named a winner of a coveted Red Dot award, one of the world’s largest design competitions.

SUSTAINABLE MONO-MATERIALS
In its quest to create recycle-ready yet cost-effective and functional packaging solutions, Constantia Flexibles created a mono-material line of packaging called Ecolutions (4) that can be completely and easily recycled to help create a circular economy.

Constantia spent five years developing Ecolutions to ensure its packaging could be recycled entirely without wreaking havoc in the recycling process. “The target was to develop a mono-material structure that has the potential to be fully recyclable. I say potential because it depends on the recycling facility,” says Tim Revell, Business Development and Global Product Manager for Constantia. “And we have developed a whole family of fully recyclable packaging which we describe as Ecolutions.

INTRODUCING! The Latest Trends for Food Products at PACK EXPO Southeast
The exciting new PACK EXPO Southeast 2025 unites all vertical markets in one dynamic hub, generating more innovative answers to food packaging and processing challenges. Don’t miss this extraordinary opportunity for your business!
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INTRODUCING! The Latest Trends for Food Products at PACK EXPO Southeast