1. A PRESENTATION
ON
FABRIC AND FIBRES FOR TIRE
PROMILA CHOWDHURY
JUTE AND FIBRE TECHNOLOGY
ROLL NO.14

2. INTRODUCTION
Tire cord fabrics are used as reinforcing
materials and designed to keep tires in shape
and support vehicle weight, having significant
impact on tire performance.
The tire cord fabric is comprised of warp
cords oriented in the longitudinal direction
and weft yarns oriented in the lateral
direction. The warp cords are used in
reinforcing pneumatic tires.

3. STRUCTURE OF TIRE CORD
FABRIC

4. PARTS OF TIRES
•Beads are two rings that are made of steel wire and
encased in rubber. They hold tire assembly on to the
rim.
•Body Plies is rubberized fabric and cords wrapped
around beads.It Form carcass or body of the tire.
•Tread is outer surface of the tire that contacts the
road.

5. •Sidewall is outer part of the tire that extends from
the bead to the tread. Marking on the sidewall
provides the information about the tire.
•Liner thin layer of rubber that is bonded to
the inside of the plies. It provides a leak proof
membrane for tubeless tires.
•Belts used to strengthen the body plies and
and stiffen the tread. They lay between the
tread and plies.

6. TYPES OF TIRE BASED ON DESIGN
• Bias/Cross ply /Diagonal Tire
• Bias belted tire/Semi radial tire
• Radial tire

7. TIRE CONSTRUCTION

8. FIBRES USED IN TIRE CORD
Viscose rayon
 Nylon6 & 66
Polyester
Aramid
Glass
PVA

9. DIFFERENT TYPES OF TIRE
BASED ON FIBRE
• Nylon Tire Cord
• Polyester Tire Cord
• Rayon Tire Cord
• Steel Tire Cord

10. PROPPERTIES REQUIRED FOR TIRE CORD
High tenacity
High cut resistance
Good impact resistance
Good flex figure resistance
Good thermal Stability
Capability to strongly bond with the rubber
Low elongation and low moisture regain
Some other properties like dimensional stability
and elastic recovery.

11. NYLON USED AS A TIRE CORD FIBRE
• Nylon is used first in aircraft tires where
toughness and light weight were the
important parameters.
• DISADVANTAGE
• Fiber and rubber bonding problem.
• Flatspotting
• Poor dynamic performance
• Thermal instability

12. DISADVANTAGE OF STEEL CORD
• High weights
• Possible moisture corrossion
• USE
• Radial tyres for truck

13. VISCOSE AS TIRE CORD
ADVANTAGE
• High breaking strength compared to cotton
and good thermal stability.
• Withstand temperature 120‐130⁰C
DISADVANTAGE
• High hygropicity, great loss of strength when
wet.

14. POLYESTER AS A TIRE CORD
• Polyester tyres became very successfull in
passenger cars but not for aircraft or heavy
goods vehicles.
• Polyester is the least expensive material in
tire cord, and so it is the most extensively
used fibre throughout the world for car
tyres.

15. NEW DEVELOPMENTS OF TIRE CORD
FABRIC
• For high load lifting capacity cord is made for
steel yarn.
• Cord is manufactured of glass fibers in some
countries.
• In recent years, cushion cord fabric for these
tire is usually made from stiff fibers with the
minimum elongation.

16. REFERENCES
• http://www.authorstream.com/Presentation/aSGuest63
596‐494234‐tyre‐cord‐fabric/
• http://www.ganpatiexim.com/NylonTyreCordFabrics.htm
• 'Textiles in automotive engineering' by Walter Fung and
Mike Hardcastle published by Woodhead Publishers.
• http://www.srf.com/tyre‐cord‐
specification.aspx#reference