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Retort pouch contains 3 layers viz
EXPLANATION
Flexible Retort Pouches & Advanced Thermal Pa
- Multi-Layer Laminate Structure of Retort Pouches:
- standard 3-ply flexible retort pouch for thermal seafood processing comprises:
- Outer Layer: Polyester (PET, $12\,\mu\text{m}$): Provides high tensile strength, heat resistance, puncture resistance, and printability.
- Middle Layer: Aluminium Foil ($9 - 12\,\mu\text{m}$): Serves as an absolute barrier to oxygen, moisture vapor, and light.
- Inner Layer: Cast Polypropylene (CPP, $70 - 80\,\mu\text{m}$): A heat-sealable, food-grade polymer that withstands retorting temperatures up to $135^\circ\text{C}$.
- Correct Option: Option 3 (Polyster/Aluminium foil Cast PP).
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