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1. TOPICTOPIC
PLASTIC WELDINGPLASTIC WELDING

2. CONTENTSCONTENTS
What is plastic welding
Types of plastic welding
Advantages
Disadvantages
Application

3. INTRODUCTIONINTRODUCTION
PLASTIC WELDING
Welding is one of the most commonly
used and most dependable methods of
joining thermoplastic materials. As with
metals,welding of thermoplastic is
accomplished by application of localized
heat sufficient to produce fusion of the
areas that are to be joined.

4. In plastic welding, heat is supplied
through convection of the pincher tips,
instead of conduction.
The two plastic pieces is brought
together. At the time of welding, a jet
of hot air is librated.
This melts the parts to be joined along
with the plastic filler rod.
As the rod start melting, it is forced
into the joint and causes the fusion of
the parts.

5. TYPES OF PLASTIC WELDING
1. HOT GAS PLASTIC WELDING
2. LASER WELDING
3. HOT PLATE PLASTIC WELDING
4. ULTRASONIC PLASTIC WELDING
5. FRICTION WELDING

6. 1.1. HOTHOT GAS PLASTIC WELDINGGAS PLASTIC WELDING
Hot gas welding is a fabrication process for
thermoplastic materials. The process uses a
stream of heated gas usually air to heat and melt
the thermoplastic welding rod.

7. Two types of hot gas weldingTwo types of hot gas welding
Round nozzle welding speed welding

8. 2. LASER WELDING2. LASER WELDING
laser plastic welding is a process of
bonding plastic using focused laser
radiation.
In this process laser light is turned into
heat energy. The heat created at the
interface a molten weld seam and the two
plastic are fused.

9. 3. HOT PLATE PLASTIC WELDING3. HOT PLATE PLASTIC WELDING
Hot plate welding is a thermal welding
technique capable of producing strong, air
tight welds in thermoplastic parts.
When using thermal energy in tightly
controlled manner, thermoplastic parts
can be heated to molten temperature very
quickly and then joined together.

10. 4. ULTRASONIC WELDING4. ULTRASONIC WELDING
Ultrasonic plastic welding is the joining
thermoplastic through the use of heat
generated from high frequency
mechanical motion.
It is the process in which high frequency
electrical energy into high frequency
mechanical motion.

11. The mechanical motion along with applied
force creates frictional heat at the plastic
components.
The plastic material will melt and form a
molecular bond between the parts.

12. 5. FRICTION WELDING5. FRICTION WELDING
Friction welding is the process that
generates heat through mechanical friction
between workpieces in relative motion to
one another.

13. ADVANTAGES OF PLASTIC WELDINGADVANTAGES OF PLASTIC WELDING
Very fast process.
Very clean process, little to no weld flash.
Relatively low cost of equipments.
 A weld is permanent, which prevents
tampering with the internal components.
Plastic welds are much lighter than
mechanical fasteners.
High quality welding for a wide range of
thermoplastic.

14. DISADVANTAGE OF PLASTIC WELDINGDISADVANTAGE OF PLASTIC WELDING
A weld is permanent , the part will never
be able to be opened and resealed in the
same way.
Hot plate welding process is relatively
slow.
Hot polymer melt often sticks to the hot
plate surface.
High capital cost is required in vibration
welding (equipment and fixture)

15. APPLICATIONSAPPLICATIONS
Hot plate welding is a very inexpensive
process in which we use handheld devices
to bond less.
Friction welding is also inexpensive
process using low maintenance machinery
and low cycle time.
Laser plastic welding is ideal for welding
in sensor housing , tail lights and
manifolds in the automotive industry.

16. THANKYOU