Compounding is a key to develop a tire which meets the severe performance requirement in the future, especially in the area of lower Rolling Resistance and better Wet grip as well as lower Noise.

Compound for tires in new era - in Nanotechnologies
Nano Technology initiated with the fundamental factors of tire materials and now can be designed by manipulating matter on an atomic and molecular scale, the manipulation of matter with at least one dimension sized from 1 to 100 nanometers. Now the definition shifted from a particular technological goal to a research category including all types of research and technologies that deal with the special properties of matter that occur below the given size threshold. It is therefore common to see the plural form "nanotechnologies" as well as "Nano scale technologies" to refer to the broad range of research and applications whose common trait is size.
 

Image of Polymer in nano-scale and manipulating electronic microscope
 

To answer to the increasing requirement for the amenity in the vehicle environment various kind of effort is on the move. One of the emphasis in the laboratory is noise reduction.

Noise
The noise generated by the tire is studies in the engineering office with the use of computer simulation and each trial piece is measured and evaluated in the anechoic chamber, which is designed to completely absorb reflections of sound in order to evaluate the actual noise due to tire. Incidentally the noise level inside the chamber is kept 10 to 20 dB.

 

The noise generated by a tire, pattern noise or road noise can be measured at specified point, outside the vehicle or internal vehicle noise. The wall inside is surrounded by the wedgeshaped glass woolRight

The tire pass-by noise is measured in the anechoic chamber

Tire uniformity
Accuracy and consistency is the single most requirement tackled in the factory for TBR . In the factory balancing machine not only for PCR but for TBR is widely adopted to check the imbalance of the tires. Static and Dynamic imbalance of tire and wheel assemblies could cause vehicle vibration. Furthermore uniformity machine which can check RFV (Radial Force Variation) and LFV (Lateral Force Variation) is going to be employed as well as for PCR.
 

Static/Dynamic Balancer This single machine checks static and dynamic imbalance for the TBR used by trucks and buses.

Uniformity machine This integrated unit checks RFV/LFV,static/dynamic imbalance, run out, and bulges/dents for TBR used by truck and bus tires.