Packaging for frozen food

Frozen food packaging must utilize materials that remain flexible and durable at temperatures as low as -18°C to -40°C. Common materials include BPA-free PE (Polyethylene), PET (Polyethylene Terephthalate), and PA (Polyamide/Nylon) for high puncture resistance. It is critical to ensure the materials are FDA or EU food-grade certified to prevent chemical migration into the food during long-term storage.

To prevent freezer burn, the packaging must provide a high oxygen and moisture vapor barrier. Vacuum sealing or MAP (Modified Atmosphere Packaging) is highly recommended to remove air. Look for multi-layer co-extruded films or laminated structures that offer superior sealing integrity to prevent dehydration and oxidation of the frozen contents.

For retail convenience, prioritize features such as resealable zippers (press-to-close), tear notches for easy opening, and anti-fog coatings if the product is displayed in transparent windows. If the product is intended for microwave use, the packaging must be microwave-safe and heat-resistant, often requiring specialized CPET or PP materials.

Buyers must verify that suppliers comply with ISO 22000 or BRCGS (British Retail Consortium Global Standard) for food safety management. For the US market, FDA 21 CFR compliance is mandatory, while the EU market requires adherence to Regulation (EC) No 1935/2004. Always request Migration Test Reports from third-party labs like SGS or Intertek.

Request a pre-shipment inspection (PSI) specifically focusing on a 'Low-Temperature Drop Test'. Samples should be frozen to the target temperature and dropped to ensure the seals do not burst and the plastic does not crack. Using Made-in-China.com's Secured Trading services can help ensure that payment is only released after quality verification.

Focus on Total Cost of Ownership (TCO) rather than just the unit price. Negotiate based on material weight (GSM) and thickness (Microns) to ensure the supplier doesn't thin the material to save costs. For long-term partnerships, ask for tiered pricing based on annual volume and request free cylinder/plate making for large initial orders.

Plastic films and bags are sensitive to extreme heat during transit, which can cause 'blocking' (layers sticking together). Ensure the goods are palletized with moisture-proof wrapping and stored away from heat sources on the vessel. For high-volume orders, FCL (Full Container Load) is preferred over LCL to reduce handling damage.

Always verify the supplier's Business License and Export Qualification on the platform. Utilize Audit Reports available on Made-in-China.com to check the factory's actual production capacity. Use Escrow-based payment methods to protect your funds until the Bill of Lading (B/L) or inspection report is confirmed.