In the global food industry, packaging is a critical line of defense for preserving freshness, ensuring safety, and extending shelf life. For foods requiring special storage—like freezing or high-temperature sterilization—choosing the right packaging bags is not just a choice, but a necessity. This article simplifies key details to help food industries align their products with the best packaging solutions.
1. Freezing-Resistant Food Packaging Bags
Freezing storage, (which typically operates within a temperature range of -18°C to -40°C, necessitates the use of specialized bags that are specifically designed to resist brittleness. These bags must also consistently maintain seal tightness to ensure that no air or moisture can penetrate the packaging. Additionally, they are engineered to prevent moisture intrusion, which is crucial for safeguarding the contents from freezer burn and preserving the original flavor of the stored items. This comprehensive set of requirements is essential to avoid the detrimental effects of freezer burn and to prevent any loss of flavor, thereby maintaining the quality and integrity of the stored products over extended periods.
Applicable Products
These bags are essential for frozen meats (beef cuts, chicken breasts, pork chops), seafood (frozen shrimp, fish fillets, scallops), frozen ready meals (dumplings, spring rolls, pasta bowls), and frozen fruits/vegetables (strawberries, peas, broccoli). Without freezing-resistant packaging, these products quickly lose texture and quality.
Key Materials
- PET/PE Composites: PET (polyethylene terephthalate) provides strength and transparency—great for retail displays where customers want to see the product. PE (polyethylene) adds flexibility and reliable low-temperature sealing, ensuring no moisture seeps in.
- PA/PE Composites: Nylon (PA) boosts puncture resistance, critical for sharp seafood bones or hard frozen food edges. PE complements it with a strong moisture barrier, keeping foods fresh for 6–12 months.
- Aluminum Foil Composites: Offers complete protection against light, oxygen, and moisture. Ideal for long-term frozen storage (e.g., bulk frozen poultry) as it locks in freshness for extended periods.
2. High-Temperature Sterilization Food Packaging Bags
Designed to withstand 100°C–135°C (boiling or retort sterilization), these bags are made for shelf-stable foods that don’t need refrigeration.
Applicable Products
They work perfectly for cooked meats (roast chicken, smoked ham, sausages), grains (glutinous corn, cooked rice packs), pickled foods (sauerkraut, spicy pickles), and pre-made sauces (tomato sauce, chili sauce). Sterilization kills harmful bacteria, letting these products stay safe and flavorful for up to 2 years.
Key Materials
- PET/PA/PP Layers: PET (outer layer) resists heat deformation, keeping the bag’s shape during sterilization. PA (middle layer) adds toughness to handle pressure changes. PP (inner layer) is food-safe, heat-resistant, and ensures a strong seal post-processing—ideal for retort-packed meats.
- Aluminum Foil Layers: For light- or oxygen-sensitive products (e.g., dark sauces, seasoned meats). It prevents discoloration, flavor oxidation, and nutrient loss, maintaining product quality.
- PE Blends: A cost-effective choice for low-temperature boiling (100°C) foods like cooked corn. It meets global safety standards (FDA, EU 10/2011) and offers flexibility to reduce breakage.
Why this matters for Global Trade
The appropriately selected special storage bags play a crucial role in significantly reducing waste and simultaneously fostering a strong sense of trust and reliability with international buyers. These bags are meticulously designed to adhere to stringent certification standards, including the globally recognized BRCGS (British Retail Consortium Global Standards) and ISO 22000, which are essential for ensuring food safety and quality management. Compliance with these rigorous certifications is not just a regulatory requirement but a fundamental prerequisite for successfully penetrating highly regulated markets such as the European Union, the United States, and Japan. By meeting these stringent criteria, these special storage bags become an indispensable asset, greatly enhancing the prospects of achieving success in foreign trade and establishing a reputable presence in the global marketplace.
Conclusion
Matching your food product to the right special storage packaging is non-negotiable. As a professional food packaging supplier, we offer custom solutions tailored to customers’ product needs and target markets. Contact us today to find the perfect bag for your frozen or shelf-stable foods and expand your global reach.