Retort food packaging bags are designed to withstand high heat during food processing, such as sterilization or pasteurization. These bags are typically made from multi-layer films that provide a barrier to moisture, oxygen, and light, which helps preserve the food inside and extend its shelf life
Retort Bags’ Structure & Materials
Multilayer Construction: Typically 3–4 layers:
Outer Layer: PET or nylon for durability and printability. High Barrier of Alxo PET
Barrier Layer: Aluminum foil or SiO₂-coated film to block oxygen, light, and moisture.
Sealing Layer: Polypropylene (PP) for heat resistance and safe food contact.
Heat Resistance
Strength and Durability
Convenient Opening
Sealing and Leak-Proof
Heat Resistance: They can endure temperatures of up to 125°C (257°F) during the sterilization process, ensuring the food inside remains safe for consumption.
Strength and Durability: These bags are made from materials like polyester (PET), nylon, or foil that can handle the pressure and heat during processing without breaking or leaking.
Convenient Opening: Retort bags are often equipped with spouts or tear notches to make them easy for consumers to open.
Sealing and Leak-Proof: The bags are sealed tightly to prevent contamination and maintain the integrity of the food inside.
Versatile Sizes and Shapes: They can be produced in various sizes and shapes to accommodate different types of food, from soups and sauces to ready meals.
Structure of Retort Pouch Packaging
PET / NY / AL / RCPP: Aluminum retort pouch widely used for the retort solid products require flatness
Mate PET / AL / NY / RCPP: Stand up pouch for liquid likes soup
TPET / NY / RCPP: Widely for clear retort pouch
TPET / White PET / NY / White RCPP: White PET and White RCPP increase the white grade and the printing grade of pouch
Retort Pouch Types
Retort Pouches Market
Tuna Pouch Packaging
Retort pouch packaging for tuna often features airtight seals to ensure product freshness and prevent contamination.
Some tuna pouches are designed to be microwave-safe, allowing for convenient heating of the contents without the need for transferring to another container.
Retort pouches are lightweight and flexible, making them convenient for storage and transportation tuan than cans.
Flexible retort food packaging can accommodate a variety of tuna products, including solid fillets, chunks, flakes, and pouches containing tuna salads or spreads.
Retort Sauce Pouch Packaging
Sauce retort pouch packaging offers a convenient and effective way to preserve and distribute various types of sauces, gravies, and condiments.
Sauce retort pouches can be designed in various shapes and sizes, like flat pouches, 3-sided seal pouches, stand-up pouches, and spouted pouches. They can be designed with features such as resealable zippers, tear notches, and spouts for easy dispensing and portion control.
Chestnut Retortable Pouch Packaging
Retortable pouches for chestnuts significantly prolong the shelf life of peeled chestnuts, allowing them to be stored at room temperature for an extended period without compromising quality or safety.
Chestnut pouches are available in both flat and stand-up designs, with some featuring convenient elements such as resealable zippers or tear notches for easy access to the chestnuts.
These retort pouches are handy for preserving chestnuts during storage and transportation, ensuring they remain fresh and flavorful until they reach the consumer.