Breaking force and

modulus comparison

The graphs below present the force-elongation curves for Twaron®, Rayon, and polyester in a single-layer carcass. Each material is tested with its optimal twist factor to preserve fatigue performance. The results conclude that Rayon exhibits low strength, while polyester demonstrates a low modulus.

Breaking force and modulus comparison

Achieving higher breaking force and modulus with Rayon or polyester typically requires two layers. This is needed for the reinforcement of a heavier EV and SUV tire. As shown in the graphs, a single layer of Twaron® provides superior performance in terms of both breaking force and modulus.

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