Reifen

Details

Veröffentlichungs-Nr.

EP4722000

Anmeldetag

6. August 2025

Veröffentlichung

8. April 2026

Rechtsraum

EP

IPC

(SUMITOMO RUBBER IND et al.)(横浜ゴム株式会社)(TOYO TIRE & RUBBER CO et al.)

Abstract

To improve the durability of tires during high-speed running, provided is a tire comprising a carcass, a belt provided on the radially outer side of the carcass, a band having a band cord and provided on the radially outer side of the belt, and a tread provided on the radially outer side of the band, wherein the band cord is a sustainable polyester cord, the tire satisfies the following formula (1), when the cord diameter of the band cord is d (mm), the number of cords present in a direction 5 cm perpendicular to the longitudinal direction is D (cords/5 cm), the dimensional stability index is DSI (%), the loss tangent 30°C tan δ is measured under the conditions of the temperature of the tread of 30°C, the initial strain of 5%, the dynamic strain of 1%, and the frequency of 10 Hz, and the thickness of the tread is A (mm). d × D / DSI × 30 ° C tan δ × A ≧ 0.7 <img class="EMIRef" id="a743ac19-09b4-47ef-938d-e89d098472b7-ia01" />

Anmelder

Firma

SUMITOMO RUBBER INDUSTRIES, LTD.

Land

🇯🇵 Japan