Retort pouch for structural design application of plastic flexible packaging
Retort pouch
1. Product requirements: used for packaging of meat, poultry, etc. The packaging is required to have good barrier properties, resistance to bone hole breakage, sterilization under 121°C cooking conditions, no cracking, no shrinkage, and no peculiar smell.
2. Design structure: transparent (BOPA/CPP, PET/CPP, PET/BOPA/CPP, BOPA/PET/CPP). Aluminum foil (PET/AL/CPP, PA/AL/CPP, PET/PA/AL/CPP, PET/AL/PA/CPP)
3. Design points
PET: high temperature resistance, high rigidity, good printability, high strength
PA: high temperature resistance, high strength, high flexibility, good barrier properties, puncture resistance
AL: Best barrier properties, high temperature resistance
CPP: High temperature cooking grade, good heat sealability, non-toxic and tasteless
Transparent bags are mostly used for 100-125 degrees cooking, aluminum foil bags can be used for 135 degrees super high temperature cooking
