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PACKAGING OF FROZEN FOODS
WHAT IS FREEZING ?
• Freezing is a phase
transition in which a
liquid turns into a
solid when its temp, is
lowered below its
freezing point .
FREEZE DRYING :
STAGES IN FREEZING :
The freezing process has three major stages :
➢ Cooling
➢Formation of ice crystals (-1 to -2 0C )
➢Cooling down to the storage temperature .
ROLE OF PACKAGING IN FROZEN
PRODUCT :
To maintain frozen food in perfect conditions
during storage , distribution . The packaging must
provide protection against following :
❑ Moisture
❑ Light
❑ Flavour and odour loss
❑ Physical damage
REQUIREMENT FOR FROZEN FOODS :
The primary function of food packaging is to
protect the food from external hazards . The
main function of food packaging is :
❖ Protection
❖ Preservation
❖ Presentation
CRITERIA FOR MATERIAL SELECTION :
• Machine performance
• Storage and transportation performance
• Printability
• Heating performance
• Product resistance
• Environmental impact
• Safety
FROZEN FOOD PACKAGING MATERIAL :
✓ Glass
✓ Plastic (PVC , PVDC)
✓ Metals (Aluminum and steel)
✓ Paper and Fiber board
✓And combination of all these
PROPERTIES OF GOOD FROZEN FOOD
PACKAGES :
• Non toxic
• With stand at low or high temp.
• Not impart the color and flavor to food
• Water resistance
• Ease of handling
TYPES OF PACKAGINGS :
o Cartons
o Direct film wrap and bags
o Boil – in – bag pack
o Overwrapped trays
CARTONS :
• Cartons are made from paper
board , coated with wax or
polyethene , coated paper
overwraps are common.
• Gives physical protection itself .
• Protection against moisture and
oxygen transfer is provided by a
barrier wrap or a sealed inner .
DIRECT FILM WRAPS AND BAGS :
• Film material used are polyvinylidene chloride
(PVDC) used to wrap food product.
BOIL-IN-BAG PACKS :
➢ The products are packed in bags in which they
are intended to be cooked before opening and
in addition they usually have an outer carton .
For e.g.. Maggi
OVERWRAPPED TRAYS :
❑ Moulded pulp trays are still
in use for the packaging of
small cuts of meat , poultry ,
etc.
❑ Aluminium foils , pressed
into a tray form is used ,
particularly for pre cooked
fruits and meat pieces .
❑ Trays are internally coated .
PACKAGING MATERIAL FOR DIFFERENT
FROZEN FOODS :
❖ Frozen poultry
❖Frozen fish
❖Frozen fruits and vegetables
❖ Frozen egg and egg products
❖ Frozen deserts
❖ Ice creams
❖ Cook- freeze products
FROZEN POULTRY :
• Materials used include vacuum grades of
PVDC copolymer film , a range of laminates ,
deep freezing grades of polyethene and other
deep freezer films . For e.g.. Big Basket .
FROZEN FISH :
• PVDC copolymer system is used in vacuum
packaging of some fishes such as : whole
frozen salmon .
FROZEN FRUITS AND VEGETABLES :
• Polyethene plastic films made for deep
freezing grades of packaging .
FROZEN DESERTS :
• Cartons
• High impact polystyrene (HIPS) containers
often with print .
ICE CREAMS :
✓ Plastic containers are the main packs.
✓ Paperboard cartons .
✓ Printed carton and polyethene – coated .
✓ Reclosable feature plastic containers .
COOK – FREEZE PRODUCTS :
o Aluminium trays and pans .
o Zip – lock freezer bags .
PACKAGING OF FROZEN FOODS  ( food technology)

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PACKAGING OF FROZEN FOODS ( food technology)

  • 2. WHAT IS FREEZING ? • Freezing is a phase transition in which a liquid turns into a solid when its temp, is lowered below its freezing point .
  • 4. STAGES IN FREEZING : The freezing process has three major stages : ➢ Cooling ➢Formation of ice crystals (-1 to -2 0C ) ➢Cooling down to the storage temperature .
  • 5. ROLE OF PACKAGING IN FROZEN PRODUCT : To maintain frozen food in perfect conditions during storage , distribution . The packaging must provide protection against following : ❑ Moisture ❑ Light ❑ Flavour and odour loss ❑ Physical damage
  • 6. REQUIREMENT FOR FROZEN FOODS : The primary function of food packaging is to protect the food from external hazards . The main function of food packaging is : ❖ Protection ❖ Preservation ❖ Presentation
  • 7. CRITERIA FOR MATERIAL SELECTION : • Machine performance • Storage and transportation performance • Printability • Heating performance • Product resistance • Environmental impact • Safety
  • 8. FROZEN FOOD PACKAGING MATERIAL : ✓ Glass ✓ Plastic (PVC , PVDC) ✓ Metals (Aluminum and steel) ✓ Paper and Fiber board ✓And combination of all these
  • 9. PROPERTIES OF GOOD FROZEN FOOD PACKAGES : • Non toxic • With stand at low or high temp. • Not impart the color and flavor to food • Water resistance • Ease of handling
  • 10. TYPES OF PACKAGINGS : o Cartons o Direct film wrap and bags o Boil – in – bag pack o Overwrapped trays
  • 11. CARTONS : • Cartons are made from paper board , coated with wax or polyethene , coated paper overwraps are common. • Gives physical protection itself . • Protection against moisture and oxygen transfer is provided by a barrier wrap or a sealed inner .
  • 12. DIRECT FILM WRAPS AND BAGS : • Film material used are polyvinylidene chloride (PVDC) used to wrap food product.
  • 13. BOIL-IN-BAG PACKS : ➢ The products are packed in bags in which they are intended to be cooked before opening and in addition they usually have an outer carton . For e.g.. Maggi
  • 14. OVERWRAPPED TRAYS : ❑ Moulded pulp trays are still in use for the packaging of small cuts of meat , poultry , etc. ❑ Aluminium foils , pressed into a tray form is used , particularly for pre cooked fruits and meat pieces . ❑ Trays are internally coated .
  • 15. PACKAGING MATERIAL FOR DIFFERENT FROZEN FOODS : ❖ Frozen poultry ❖Frozen fish ❖Frozen fruits and vegetables ❖ Frozen egg and egg products ❖ Frozen deserts ❖ Ice creams ❖ Cook- freeze products
  • 16. FROZEN POULTRY : • Materials used include vacuum grades of PVDC copolymer film , a range of laminates , deep freezing grades of polyethene and other deep freezer films . For e.g.. Big Basket .
  • 17. FROZEN FISH : • PVDC copolymer system is used in vacuum packaging of some fishes such as : whole frozen salmon .
  • 18. FROZEN FRUITS AND VEGETABLES : • Polyethene plastic films made for deep freezing grades of packaging .
  • 19. FROZEN DESERTS : • Cartons • High impact polystyrene (HIPS) containers often with print .
  • 20. ICE CREAMS : ✓ Plastic containers are the main packs. ✓ Paperboard cartons . ✓ Printed carton and polyethene – coated . ✓ Reclosable feature plastic containers .
  • 21. COOK – FREEZE PRODUCTS : o Aluminium trays and pans . o Zip – lock freezer bags .