Plastic containers, Metal containers etc and their reuse

1. WELCOME TO OUR ………
PRESENTATION ON
FOOD
CONTAINERS
DEPARTMENT OF FOOD ENGINEERING AND TECHNOLOGY, HSTU

2. Members
1. Md. Nazmul Islam Email: nazmul007fpe@gmail.com
2. Kawser Alam Kanan Email: k09hs132@gmail.com
3. Towrin Nahar Email: tuly3209@gmail.com

3. DEFINITION OF CONTAINER
• An object (such as a box , can or bottle) that can hold something
• A food container is a structure sized to contain a food in order to
make it easier and save delivery to the customer and protect the
product against contamination

4. FUNCTION OF CONTAINERS
1. Containment
2. Protection
3. Communication
4. Convenience
5. Presentation
6. Increasing shelf life
7.Environmental responsibility

5. TYPES OF CONTAINERS
1. Glass Containers
2. Plastic Containers
3. Metal Containers

6. GLASS CONTAINERS
Glass became one of the earliest forms of packaging. Ornamental
glass has been found in excavation in Egypt and Mesopotamia.
Glass container manufacture was mechanized in the United States
in the late nineteenth century
Now-a-days a wide range of foods are packed in glass containers
.Different forms of glass contain are
Bottles, jars, Tumblers, jugs, vails and Ampoules , carboys etc.

8. VARIETIES OF GLASS IN GLASS CONTAINERS
I. White flint (clear glass): Colorless glass known as white glass flint,
it is derived from soda, lime & silica
II. Pale Green (half white): Slightly pure materials are used, Fe2O3
rises and a pale green glass is produced.
III.Dark Green: Obtained by the addition of chromium oxide and iron
oxide
IV.Amber: Containing iron oxide under strongly reduced conditions.
Carbon is also added. It has UV protection properties, used for
light-sensitive products.
V. Blue: Usually obtained by the addition of cobalt to low-iron glass.
VI.Other colors: Only used for high value products such as premium
spirits.

9. GLASS MANUFACTURING PROCESS
Sand
Batch Preparation
Glass melting and Refining
Conditioning and Feeding
Bottle and Jar Forming Machine
Annealing Lehr
Inspection and Packaging
Statistical Q.C
Warehousing
Distribution
Customer

10. PARTS OF GLASS CONTAINER

11. USES OF GLASS CONTAINERS
I. Instant coffee storage at a long time
II. Container as a processed baby food
III.Jam, jelly, sauce container
IV.Preserve frozen meat and fish
V. Used as a bottle to contain juice, beer, wine, soft drinks etc.

12. Advantages
• they are impervious to moisture, gases, odors and micro-organisms
• they are inert and do not react with or migrate into food products
• they are suitable for heat processing when hermetically sealed
• they are re-useable and recyclable
• they are transparent to display the contents
Disadvantages
• higher weight which incurs higher transport costs than other types of
packaging
• lower resistance than other materials to fractures, scratches and thermal
shock
• more variable dimensions than metal or plastic containers
• potentially serious hazards from glass splinters or fragments in foods.

13. PLASTICS CONTAINERS
Plastic container were first used commercially in 1875 but remained
relatively expensive until the early 1960s when high-density
polyethylene was introduced. They quickly became popular with
both manufacturers and customers due to their lightweight nature
and relatively low production and transportation costs compared
with glass bottles. Except for wine and beer, the food industry has
almost completely replaced glass bottles with plastic bottles.

14. DIFFERENT TYPES OF PLASTICS USED AS CONTAINERS
I. Barrier Bottles
II. Boston Round Bottles
III. Jars
IV.Storage Containers
V. Packer Bottles
VI.Media Bottles
VII. Cylinder Bottles

16. PLASTICS CONTAINERS ARE GENERALLY MADE OF
1.Polyethylene terephthalate(PETE)
2. High-density polyethylene(HDPE)
3. Polyvinyl chloride(PVC)
4. Low-density polyethylene(LDPE)
5. Polypropylene(PP)
6. Polystyrene(PS)
7. Others

17. MANUFACTURING METHODS
Extrusion Blow Molding Method:
• In extrusion blow molding a round, hollow tube
or parison is formed by an extruder.
• A mold cavity, composed of two halves, closes
around the parison and pinches off one end.
• . While the parison is extruded, programming
changes in the relation of mandrel and die can
be used to shift material from heavier, stronger
areas to lighter, weaker areas.
• Finally Bottle Removed and trimmed
This method aids significantly in maximizing
container performance and minimizing container
weight and cost.

18. MANUFACTURING PROCESS
Frist major step in the conversion of plastic resin into films, sheets, containers,
etc. is to change the pellets from solid to liquid phase in an extruder
The plastic is melted by a combination of high pressure, friction and externally
applied heat
In the manufacture of film and sheet, the molten plastic is then forced through a
narrow slot or die
In the manufacture of rigid packaging, such as bottles and closures, the molten
plastic is forced into shape using a precisely machined mould

19. Advantages
I. Lighter than other materials
II. Chemically inert or non corrosive
III. Versatile use
IV. Comparatively cheap
V. Non attracted by microorganisms
VI. Easily sealed hermetically by heat and pressure
Disadvantages
I. Permeability to gases and vapour
II. Possibility interacting with the product
III. Some insects and pests can make holes in on damage the plastic and
spoil the content
IV. Not so strong as glass and tin container

20. METAL CONTAINERS
The total world for metal
containers is estimated at
410 billion units per annum.
Of this , drink cans accounts
for 320 billion and
processed food cans
account for 75 billion. The
remainder are aerosol and
general line cans

21. PURPOSES OF METAL CONTAINERS
I. Suitable for long way transportation
II. Preserve and protect the product
III.Provide better quality of container structure
IV.Withstand the external environments conditions
V. Resist chemical action of the product
VI.Give easy opening and safe product removal

22. TYPES OF METAL CONTAINERS
1. Can
2. Stainless steel
3. Shipping containers

23. CAN MAKING PROCESS
Food & drink cans may be constructed either as …………………
1. Three-piece container:
Consists of a cylindrical body rolled from a piece of flat
metals with a longitudinal seam together with two cans
This process is very flexible
possible to make different dimension can
2. Two-piece container:
Made from a disc of metal that is reformed into a cylinder
with an integral end to become a seamless container
Only be formed in aluminium

24. USES OF CAN
Juice can
Beer can
Potato can
Vegetables can

25. Advantages
I. Can is light, weight, resistant to atmospheric corrosion
II. Can be shaped or formed easily
III. Works well in very thin beverage cans that contain internal pressure such as
soda or beer
IV. Aluminium in contact with air forms an aluminium oxide film which is
resistance to atmospheric condition
Disadvantage
They are expensive. Sometimes they are heavier than other materials.so they
have higher transport costs

26. ENVIRONMENTAL PROFILE

27. THANKS TO ALL