banner

How to Choose the Right Retort Pouches for Different Sterilization Conditions ?

Retort pouches are widely used in food and pet food packaging because they can withstand high-temperature sterilization while maintaining product freshness and safety. At MFirstPack, we specialize in custom-made retort pouches that adapt to different sterilization conditions and packaging needs.

Temperature Range and Retort Requirements

Our retort pouches are designed to handle sterilization temperatures ranging from 121°C to 135°C. This range covers most food and pet wet food applications, including ready meals, soups, sauces, tuna, and cat or dog wet food.

    1. Low-temperature sterilization (around 121°C): suitable for soft content such as sauces and light soups.

    2. Medium-temperature sterilization (125–130°C): ideal for most pet wet food and human ready meals.

    3. High-temperature sterilization (up to 135°C): recommended for meat-based, protein-rich recipes that require stronger bacteria control and longer shelf life.

pet food packaging bags (2)
pet food packaging bags (5)

Material Structure Options

We provide two main structures to meet different packaging goals:

    1. Three-layer transparent material: PET / NY / RCPP

      a: Clear appearance for product visibility

      b: Withstands sterilization up to 125°C

      c: Ideal for products that need transparency and moderate shelf life

    2. Four-layer aluminum foil material: PET / AL / NY / RCPP

      a: Excellent barrier against oxygen, moisture, and light

      b: Suitable for 130–135°C sterilization

      c: Recommended for products that require long shelf life and complete light protection

Each layer in our retort packaging film plays a vital role in ensuring food safety and sealing integrity. The RCPP film serves as the inner sealing layer—it has superior heat resistance and flexibility, maintaining excellent sealing even under high pressure and temperature.

Applications of Retort Pouches

Our retort stand up pouches and retort film rolls are widely used in:

    1. Pet wet food (cat and dog food)

    2. Ready meals and curry packaging

    3. Seafood (tuna, salmon, etc.)

    4. Soups, sauces, and beans

Whether you need transparent high-barrier packaging or aluminum laminated pouches, we can customize the structure, thickness, and size according to your sterilization process and filling equipment.

Why Choose MFirstPack?

    1. 30 years of packaging experience

    2. ISO9001 and BRC certified

    3. Professional gravure and digital printing lines

    4. Small order MOQ for sample testing

    5. Short lead time and consistent quality

At MFirstPack, we don’t just supply pouches — we provide total packaging solutions for food manufacturers and pet food brands worldwide.

Contact Us

Looking for custom retort pouches that fit your sterilization process?
Email us today at emily@mfirstpack.com to get your personalized packaging solution!


Post time: Oct-23-2025