PennPac says its high-barrier food films are multilayer structures that include EVOH, making it ideal for packaging protein products; films offer excellent clarity which allows consumers to see the product inside easily

Sample article from our Packaging Industry

January 5, 2024 (press release) –

The Importance of Barrier Properties

Consumers focus much attention to price, brand name, and general appearance of a product. Unknowingly, overlooking barrier properties packaging films exhibit behind the scenes. In addition to food packaging providing an attractive and informative shelf presentation, there’s more!  Moisture, oxygen, oil, gas and light are controlled. All of which, are essential for maintaining freshness.

Steaks, fish, hot dogs, sausages, nuts, and poultry appear fresh and vibrant through their heat-sealed and crystal-clear packaging films. A perishable product’s additives or natural formulation may be negatively impacted by many of the aforementioned properties. As such, subject to flavor, appearance, and odor concerns with inadequate packaging.

How to Choose?

What film(s) get used for which product type is determined by what “needs to stay out” and what “needs to stay in.”

What Foods Require Protection?

Food categories requiring barrier protection include, but are not limited to: bakery, confectionary, pet foods, chips/snacks, nuts, cheeses, meats, poultry and even dehydrated foods. For instance, a cracker or chip requires resistance to light and moisture to maintain crispness. Inversely, a dehydrated product like jerky, is packaged to retain a specific level of moisture. All of which, allow for longer shelf-life periods.

Similarly, fresh bakery products use a perforated film designed to release moisture at a specific rate to remain crispy on the outside. Meanwhile, remaining soft and dense on the inside.

Types of Barrier Film Substrates Used in Specialty Films

Let’s touch on the basic types of barrier film substrates used for packaging many of our favorite products, to maintain shelf-life quality. Polyester (PET), Metallized Polypropylene (MPP), Ethylene Vinyl Alcohol (EVOH), Polypropylene (PP), Polyethylene (PE), and Nylon (PA). Nonetheless, being the most common barrier materials creating laminate structures used in most food packaging applications.

While each material has its own list of characteristics, they are often strategically combined in lamination structures by Packaging Engineers and Food Scientists.

What brings these materials together is determined by what barrier is required for a specific product.

Here’s an Example

EVOH, PA and PE/PP are typically organized with two skin layers and a core. The EVOH is usually the core because of its exceptional oxygen barrier properties. Nylon may be added as a tie layer for its strength and durability. When combining two or more films to make a laminated structure, you are essentially combining the barrier properties of all the materials.

Choosing the Right Packaging Film Supplier for Your Needs

In today’s demanding and competitive perishable food supply chain, brand owners drive reductions in food product waste. Therefore, maintaining a sensitivity to environmental conservation initiatives. Above all, improving our daily food consumption.

Additionally, scientists and engineers working closely with regulatory bodies like the USDA/FDA. Such to ensure that perishable foods are properly packaged to provide your family safe, healthy and balanced food options.

High-Barrier films deliver the ultimate performance for food and beverage products – they provide excellent packaging shelf life while also preserving the taste and quality of the product.

PennPac’s High-Barrier food films are multilayer structures that include EVOH (ethylene-vinyl alcohol). EVOH is a flexible, crystal clear, glossy thermoplastic copolymer that’s known for having some of the best barrier resistance to gases such as oxygen, nitrogen, and carbon dioxide. This makes it ideal for packaging protein products.

In addition to their protective qualities, PennPac’s high-barrier packaging films offer excellent clarity which allows consumers to see the product inside easily. To enhance shelf appearance, PennPac offers pigmented options as well.

Contact PennPac to discuss your food packaging barrier requirements, or to request a sample. We can help evaluate which materials are best suited for your application.

We look forward to working with you!

 

* All content is copyrighted by Industry Intelligence, or the original respective author or source. You may not recirculate, redistrubte or publish the analysis and presentation included in the service without Industry Intelligence's prior written consent. Please review our terms of use.

See our dashboard in action - schedule an demo
Dan Rivard
Dan Rivard
- VP Market Development -

We offer built-to-order packaging industry coverage for our clients. Contact us for a free consultation.

About Us

We deliver market news & information relevant to your business.

We monitor all your market drivers.

We aggregate, curate, filter and map your specific needs.

We deliver the right information to the right person at the right time.

Our Contacts

1990 S Bundy Dr. Suite #380,
Los Angeles, CA 90025

+1 (310) 553 0008

About Cookies On This Site

We collect data, including through use of cookies and similar technology ("cookies") that enchance the online experience. By clicking "I agree", you agree to our cookies, agree to bound by our Terms of Use, and acknowledge our Privacy Policy. For more information on our data practices and how to exercise your privacy rights, please see our Privacy Policy.