1. Processing & Converting of Plastic Polymers
THE LEADING EDGE IN PACKAGING…
Processing & Converting of Plastic Polymers
Extrusion
Blown Method
Cast Method
Lamination

2. Processing & Converting of Plastic Polymers
Blown Film
THE LEADING EDGE IN PACKAGING…
Processing & Converting of Plastic Polymers
EXTRUSION - BLOWN METHOD
- is the manufacture of thin plastic film by extruding the polymer into a close circular bubble and expanding the bubble with air. By pulling the inflated bubble up and continuously adding more plastic resins, a continuous tube of film is created.
- After the film is cooled, it is flattened in a collapsing frame and wound into rolls.
- It can be wound up as a tube or it can be cut and sealed to make plastic bags. It can also be slitted and rolled as flat sheet film

3. Blown Extrusion Process
Die Head
THE LEADING EDGE IN PACKAGING…
Virgin Resin is mixed with specified
Regrind and other Additives
2. The blended, heated mixture is
Pumped into the circular rotating die

4. Blown Extrusion Process
THE LEADING EDGE IN PACKAGING…
Air Bubble
3. A tube is drawn upward as it is being
extruded from the die
4. Controlled air is blown into the tube
to create dimension and cool the bubble
as it is drawn up to the interior of the
tower

5. Blown Extrusion Process
Nip Rollers
THE LEADING EDGE IN PACKAGING…
The bubble is being collapsed
as it passes through
6. And over the nip rollers

6. Blown Extrusion Process
THE LEADING EDGE IN PACKAGING…
7. After it passed over the nip rollers,
it will go down outside the tower into
a final configuration of rollers where…
8. It will either be slitted into sheets, wound into tube rolls, or cut and
sealed to form into bags

7. Processing & Converting of Plastic Polymers
THE LEADING EDGE IN PACKAGING…
Processing & Converting of Plastic Polymers

8. Processing & Converting of Plastic Polymers
THE LEADING EDGE IN PACKAGING…
Processing & Converting of Plastic Polymers
EXTRUSION - CAST METHOD
- The cast co-extrusion process combines several layers of different polymers into one film, benefiting from their different physical and chemical properties, thus providing the right solution to the specific packaging requirement of the food industry

9. Processing & Converting of Plastic Polymers
THE LEADING EDGE IN PACKAGING…
LAMINATION
- is the method to combine several polymer sheets using an adhesive to bond them together within a specified curing time
TYPES OF LAMINATING PROCESS
1. Dry Lamination
2. Wet Lamination

10. Processing & Converting of Plastic Polymers
THE LEADING EDGE IN PACKAGING…
DRY LAMINATION
Is a lamination method wherein 2 films are joined together using an adhesive and is made to pass through heated rollers to ensure that the 2 films will firmly stick together
WET LAMINATION
Is a lamination process wherein the newly extruded film which is still in its molten state is immediately stuck into another film and is cooled on chill rolls.
In this process , adhesive is not required since the dry film will immediately adhere to the newly extruded wet film through the help of the rollers

11. OPERATIONAL FLOW CHART
LAMINATION PROCESS
OPERATIONAL FLOW CHART
THE LEADING EDGE IN PACKAGING…

12. Processing & Converting of Plastic Polymers
THE LEADING EDGE IN PACKAGING…
METALLIZATION
- Vacuum metallizing is the process of
depositing vaporized aluminium onto
a film substrate in order to increase the
barrier properties of the film
- It is a physical vapor deposition process,
produces coating by thermal evaporation of
aluminium which was heated to effect
vaporization

13. PLASTIC PACKAGING & ITS APPLICATION
THE LEADING EDGE IN PACKAGING…
PLASTIC PACKAGING & ITS APPLICATION

14. PLASTIC PACKAGING & APPLICATION
THE LEADING EDGE IN PACKAGING…
What is plastic packaging made of?
Base polymer
– specific resin to be extruded in either monolayer or multilayer form and…
Additives
- an ingredient that enhances the properties of the base polymer without altering its chemical structure
- combination of food grade additives can be added into the resins during processing to meet the required film characteristics

15. PLASTIC PACKAGING & APPLICATION
THE LEADING EDGE IN PACKAGING…
Types of Additives:
Antioxidants – protect the resin from deteriorating during thermal processing.
Plasticizer – commonly used in PVC, to obtain flexibility and clinginess
Anti-static additives – reduce static accumulation
Anti-bloc agent – prevent film layers from blocking or sticking together
Slip agents – reduce frictional properties, allowing the film to slide smoothly over itself which improves high-speed packing and handling processes
UV Stabilizers – should be used with plastic that will have direct exposure to UV radiation
Dyes, Pigment – blended in as master batch color concentrates

16. PLASTIC PACKAGING & ITS APPLICATIONS
THE LEADING EDGE IN PACKAGING…

17. PLASTIC PACKAGING & APPLICATION
THE LEADING EDGE IN PACKAGING…

18. PLASTIC PACKAGING & APPLICATION
THE LEADING EDGE IN PACKAGING…

19. PLASTIC PACKAGING & APPLICATION
THE LEADING EDGE IN PACKAGING…

20. PLASTIC PACKAGING & APPLICATION
THE LEADING EDGE IN PACKAGING…

21. PLASTIC PACKAGING & APPLICATION