The Hidden Challenges of Traditional Seafood Packaging
Seafood transportation requires much more than a simple container. Fish, shrimp, crab, and other seafood products must stay protected against temperature changes, moisture, impact, and pressure throughout the entire cold chain journey.
From fishing ports and processing facilities to refrigerated trucks, containers, and distribution centers, packaging plays a critical role in maintaining product quality. A weak package can lead to ice leakage, product damage, contamination risks, and financial losses.
For many years, EPS foam boxes have been widely used for seafood shipping because they are lightweight and provide basic insulation. However, as seafood supply chains become more demanding, the limitations of EPS are becoming increasingly clear.
1. Poor Performance Under Heavy Stacking
During transportation, seafood boxes are often stacked several layers high in cold storage and shipping containers. The bottom boxes must withstand continuous pressure, vibration, and handling impacts.
EPS foam is lightweight but relatively brittle. When excessive force is applied, cracks can develop at corners and weak points, reducing the protection of the seafood inside.
In comparison, PP corrugated boxes feature a strong fluted structure that distributes pressure across the entire box wall. This provides better stacking strength and durability for long-distance seafood transportation.
2. Moisture and Leakage Problems
Moisture is one of the biggest challenges in seafood cold chain packaging. Melting ice creates a constantly wet environment, and packaging materials must maintain their strength under these conditions.
While EPS foam itself has low water absorption, seams and connection areas can become vulnerable over repeated use and temperature changes.
PP corrugated boxes are made from waterproof polypropylene material. They do not absorb water, maintain their structure in cold and wet environments, and are easier to clean and sanitize.
3. Growing Sustainability Requirements
Today, seafood exporters are facing increasing pressure to reduce packaging waste and improve sustainability.
Disposable EPS foam packaging can create recycling and disposal challenges in many markets. Buyers and distributors are also paying more attention to environmentally responsible packaging solutions.
Reusable PP fish shipping boxes offer a more sustainable option because they can be reused multiple times, cleaned easily, and recycled after their service life.
When comparing PP box vs EPS foam, PP packaging provides better long-term value through improved durability, hygiene, and reusability.
For modern seafood exporters, choosing the right packaging is not only about protecting products during transportation — it is also about reducing costs, improving efficiency, and meeting the changing expectations of global markets.