FP PPT-1.ppt................................................

packaging

1. PACKAGING

2. Definition
•Packaging is the scientific method of
containing food products against physical
damage, chemical changes, further
microbial contamination and to display the
product in the most attractive manner for
consumer preferences.

3. Functions
•It contains the food product for ease and
safety during transport.
•Protection from contamination.
•Prevention of degradation from exposure to
environmental factors

4. •Convenient means of dispensing.
•Attraction of consumer.
•Identification of manufacturer’s brand,
quantity,
•Quality and type of product.
•Educate the consumer

5. CHARACTERISTICS
Colour:
•Blue: cleanliness and coolness
•Green: tranquility
•Orange: warmth
•Yellow: strength and cheerfullness
•white: mourning
•Cherry blossom: Japanese favour it.
•White and black: controversial

6. Shape:
•Rectangle
•Triangular
•Cylindrical
•Oval

7. Requirements of containers
• Non toxic
• Compatible
•Sanitary protection
•Moisture and fat protection
•Gas and odour protection
-Bad odour –out
-Aroma -in

8. Strength properties
1.Tensile strength – Stretch the film to see the

strength
2. Bursting strength
3. Tearing strength
4. Water vapour permeability
5. Grease permeability
6. Oil permeability
7. Heat sealibility

9. Packaging Materials
Two broad categories:
•Rigid packaging materials
•Flexible packaging materials

10. Rigid packaging materials:
1. Metal cans:
•Primarily for heat sterilized food products.
•Made of tin plate, aluminium or tin free
steel.
•Lacquers are applied to the tin for specific
applications.

11. •Composition of lacquers depends on food
stuff to be packed.
•Sulphur resistant internal lacquers usually
zinc oxide oleoresins are used for meat
products to check discolouration(sulphur
staining).

12. •Aluminum cans not used extensively for
heat sterilized food products. Internal
lacquering is necessary.
•Shallow drawn cans are used for processed
meat and fish products.
•Deep drawn cans are used for processed
food products like powdered and condensed
milk.

13. 2. GLASS CONTAINERS:
These are one of the most versatile packages used
in food packaging.
Advantages:
•Chemically inert in nature.
•Excellent product visibility.
•Excellent barrier to solids, liquids and gases.
•Molded into various shapes and sizes.
•Withstand sterilization temperature.
•Refillable.

14. •Disadvantages:
Fragile-
•Heavy weight.
•Not easy to dispose of.
Packaging forms-
•Bottles
•Jars
•Tumbler (like jars but open ended)
•Jugs
•Carboys

15. 3. RIGID PLASTIC PACKAGES:
•Thermoformed trays have many food applications
ranging from meat trays to polystyrene foam trays
for eggs.
What are thermoformed trays made of?
The most frequently used materials for
thermoformed trays are
 PVC, HDPE, PE, PETG,
HIPS and RPET. Other properties, based on the
material selected, are as follows: Durability,
resistance to impact or abrasion. Ability to
withstand harsh chemicals.

16. •PVC- Polyvinyl chloride
•HDPE- High density polyethylene
•PE - Polyethylene
•PETG- Polyethylene terephthalate glycol
•HIPS – High impact polystyrene
•RPET- Recycled polyethylene terephthalate

17. •Plastics used are HDPE, PVC, PS and PP.
•Specific plastic selected depends on food
packaged and storage requirements needed.

18. Advantages:
•Low cost
•Ease of fabrication

19. HDPE (High-density polyethylene):
HDPE is the most widely used polyethylene film
for food packaging. It is semi-translucent and
highly solvent-resistant. HDPE is the least
flexible and strongest of the polyethylene
films, making it perfect for applications where
it needs to hold its shape.

20. Why is HDPE good for food packaging?
HDPE is an ideal material for food and
beverage containers due to its
 lightweight
and high strength properties. This allows
millions of products to be produced and
transported in an economical manner like
milk jugs and fresh juice.

21. What foods are packed with HDPE materials?
HDPE is commonly used in food packaging
for
 juice and milk jugs, squeeze butter and
vinegar bottles and chocolate syrup
containers, as well as grocery bags.

22. What is the difference between HDPE and
LDPE food packaging?
Put simply, HDPE and LDPE differ in
density, which makes
 HDPE more suitable
for applications where strength is most
important, but LDPE more valuable for
applications that need flexibility.

23. Is HDPE suitable for food?
Virgin, or non-recycled, HDPE is food safe.
Recycled HDPE products are reviewed by the
FDA on a case-by-case basis. Virgin HDPE is
great for making food safe plastic containers
since it resists corrosion, doesn't absorb much
moisture and doesn't leach chemicals.

24. polyethylene terephthalate
PET or PETE
 — This type of plastic,
polyethylene terephthalate is listed as number 1
inside the recycling triangle diagram. PET
plastic is clear, tough and has gas and moisture
barrier properties. This plastic is commonly
used for beverages such as soft drinks, juices
and bottled water.

25. What is a common use for HDPE?
•Shampoo Bottles.
•Toys.
•Chemical Containers.
•Pipe Systems.
•Milk Jugs.
•Recycling Bins.
•Grocery Bags.
•Cereal Box Liners.

26. Is HDPE safe for long-term food storage?
Best for long-term food storage, HDPE food safe
plastic is one of the most used options in
household food packaging for a variety of
reasons, including its lightweight feel yet
extreme durability – after all, it's what's used to
make milk jugs and grocery bags, both
requiring an impressive strength-to-density
ratio.

27. Is HDPE better than LDPE?
HDPE has higher abrasion and tear resistance
than LDPE, along with higher tensile and
shear strength.

28. What are the disadvantages of HDPE bags?
•Lower melting point than polypropylene.
•Less rigid and resistant to chemicals than
polypropylene.
•Higher cost than polypropylene.

29. Why is HDPE waterproof?
HDPE is a thermoplastic polymer that has
excellent resistance to moisture and is
impermeable to liquids. This makes it ideal
for a wide range of applications where
waterproofing is important, including water
storage tanks, pipes, and liners for ponds
and reservoirs.

30. 4. WOODEN BOXES AND CRATES
Wooden boxes are usually:
•Solid walled
•Rectangular
•Nailed containers
•Vary in size

31. Wooden crates are:
•Lighter in weight
•Spaces are left between board.

32. 5. FIBRE BOARD AND CARD BOARD
BOXES
Fibre board boxes:
•Used to make shipping cases exclusively in
bulk packaging.

33. Advantages:
•Versatility
•Light weight
•Disposability
•Low cost
Major disadvantage :
•Low wet strength