Tyre Technology

1. TYRE
TECHNOLOGY
Dr. P. Sivakumar
Asst. Professor
Dept. of Chemistry
A.A. Govt Arts College
Namakkal – 637 001
shivagobi@yahoo.com

3. STAGES OF TYRE MANUFACTURING
 Rubber Compounding
 Component Preparations
 Tyre Building
 Curing
 Finishing with manual inspection
 Transportation

4. Compound Design
Natural Rubber
– Poly Isoprene
SBR
PBD
Tubes and Inner
Layer of
Tubeless
Tyres
Butyl Rubber

5. NR
NR + PBD
SBR
Tubes and Inner
Layer of
Tubeless
Tyres
Butyl Rubber

6. Rubber Compounding
Chemical description Other trade names
Rubber (NR + PBD + SBR)
Carbon Filler
Sulphur (Soluble & Insoluble) Vulcanizing Agent
Process Oil Mineral oil
2-Mercapto Benzothiazole Accelerator M,
Dibenzothiazole disulphide
N-cyclohexyl-2-benzothiazole sulphenamide
Steric Acid – Improves the Adhesion Binding Agent, Stabilizer
Silica, TiO2
, ZnO White Filler
N-(Cyclohexylthio) pthalimide PVI
Nickel dibutyl dithio carbamate A.Oxidant , A. Ozonant
Raw Rubber + Chemicals  Useful form

7. Compounding
CHEMICALS

8. COMPONENTS PREPARATION
 Tread
 Bead
 Fabric
 Steel Belt

9. Tread Extrusion

10. Fabric Calendering

11. Bead Winding

12. Building the Tyre
 Inner Linner
 Bead
 Fabric Green Tyre
 Steel Belt
 Tread

13. Tyre Building

14. Green Tyre

15. Curing
 Real process of Vulcanization
 Improves elasticity
 Dimension stability
 Chemical Resistance
 Air Impermeability

16. TYRE CURING - VULCANIZATION