Wet pet food remains one of the fastest-growing categories in the pet nutrition market, particularly in North America and Europe. While consumers often refer to these products simply as “canned pet food,” the packaging formats behind them have evolved far beyond traditional metal cans.
Today, many leading brands use plastic trays with heat-sealed lidding films, shallow tubs, or hybrid formats that combine rigid containers with high-barrier flexible packaging. These systems are designed not only to protect the product but also to support shelf life, safety, convenience, and efficient distribution.
At MTPak, we work with pet food manufacturers developing flexible packaging components that integrate into these modern wet food systems, especially where barrier performance and sealing reliability are critical.
Why Does Wet Pet Food Place Higher Demands on Packaging?
Wet pet food presents a more complex packaging challenge than dry kibble. High moisture content, fats, proteins, and thermal processing all place stress on packaging materials.
From a packaging engineering perspective, the key challenges include oxygen ingress, moisture migration, grease resistance, and seal integrity during retort or hot-fill processes. Any failure can compromise food safety, shorten shelf life, or lead to leakage during transport.
This is why high-barrier flexible packaging plays such an important role, even when the primary container appears rigid from the outside. The barrier layers, sealant performance, and film structure often determine whether the system performs as intended throughout distribution and storage.
What Packaging Formats Are Commonly Used for Wet Pet Food Today?
Although metal cans are still widely used, they are no longer the only—or even the dominant—format in many retail segments.
In the U.S. market, especially, plastic trays with heat-sealed lidding films are increasingly common. Brands such as Nutro-style chilled meals and shelf-stable pâté lines rely on rigid trays combined with flexible films to create an airtight seal while maintaining a clean, modern presentation.
Traditional metal cans continue to be used for long shelf-life products, but even these often rely on flexible packaging in secondary formats, such as multi-pack wraps or transport protection.
Retort pouches have also gained traction as an alternative to cans, offering reduced weight, faster heat transfer during sterilization, and improved convenience for consumers.
Across all of these formats, flexible packaging films are not optional accessories. They are functional components that directly affect performance.
How Do Plastic Trays and Lidding Films Work as a Packaging System?
Plastic trays with lidding films are sometimes grouped under the broad category of “canned” pet food because they serve the same function: sealing wet food in a shelf-stable or chilled format.
In reality, these systems rely heavily on the properties of the lidding film. The film must provide sufficient oxygen barrier and moisture protection while maintaining consistent seal strength across production runs. It must also withstand retort temperatures or pasteurization cycles without delamination or seal failure.
High-barrier flexible packaging films are engineered to meet these requirements through multilayer structures. Barrier layers limit oxygen transmission, while sealant layers ensure compatibility with tray materials such as PP or PET.
From a production standpoint, these films also need to run smoothly on high-speed sealing equipment, where minor inconsistencies can lead to costly downtime or waste.
Where Does Flexible Packaging Fit into “Canned” Pet Food?
In industry discussions, rigid formats such as cans or trays are sometimes referred to as containers. However, their performance depends on the flexible packaging elements integrated into the system.
Lidding films, retort pouch laminates, and secondary flexible wraps all serve as the first line of defense against oxygen, moisture, and contamination. Without properly specified films, even the most robust container cannot ensure product stability.
This is why procurement and packaging teams increasingly evaluate wet pet food packaging as a system rather than a single component. Flexible packaging is not a replacement for rigid containers in every case, but it is a critical contributor to overall performance.
What Should Pet Food Manufacturers Consider When Selecting Packaging?
Packaging decisions for wet pet food are rarely driven by cost alone. Shelf life targets, regulatory requirements, distribution conditions, and consumer expectations all factor into material selection.
For tray-sealed formats, compatibility between the tray material and lidding film is essential. Seal performance must remain stable across temperature fluctuations and handling stresses.
For retort applications, film structures must be validated for thermal resistance and barrier stability. Even small variations in film composition can affect performance during sterilization.
Manufacturers should also consider how packaging choices impact logistics. Lightweight flexible packaging can reduce shipping costs and improve handling efficiency compared to all-rigid formats.
How Is Wet Pet Food Packaging Evolving?
The future of wet pet food packaging is increasingly shaped by system optimization rather than format replacement.
Smart packaging features, such as traceability codes and tamper-evident designs, are being integrated into flexible films. Sustainability goals are pushing brands to explore downgauged structures and recyclable material combinations where feasible.
Customization is also becoming more important. Flexible packaging allows brands to adjust portion sizes, shapes, and designs without the tooling constraints associated with rigid containers.
Across these trends, high-barrier flexible packaging remains central, providing the functional foundation that allows innovation without compromising food safety.
Conclusion
Wet pet food packaging is no longer defined solely by metal cans. Plastic trays with lidding films, retort pouches, and hybrid systems have become mainstream, especially in the North American market.
In all of these formats, high-barrier flexible packaging plays a decisive role in protecting product quality, supporting shelf life, and ensuring reliable production performance. Understanding packaging as an integrated system helps manufacturers make better decisions and avoid costly failures downstream.
At MTPak, we support pet food producers with flexible packaging films designed to meet the real-world demands of wet food applications. If you are evaluating packaging options for canned or tray-sealed pet food, our team can help you assess material structures and performance requirements based on your production process.
Feel free to contact us to discuss your packaging needs or request material samples for testing.
