Light tire bodies using thick cords

Details Light tire bodies using thick cords Light tire bodies using thick cords

1979-12-17

1981-10-27

Kittle, John E.

Resilient tires and wheels

Tires, resilient

Patches

152357R, 152359, 152362R, B60C 906, B60C 1506

Patent

active

042967902

ABSTRACT:
A light tire body using thick cords is disclosed. The tire body comprises a bias-structured carcass composed of rubberized plies each including thick organic fiber cords. The rubber between the carcass plies has a thickness corresponding to hm/ho.ltoreq.0.5 where hm is an average rubber gauge between the plies at a center position in a widthwise direction of tire and ho is a diameter of the thick cord, and is prepared from a compounding recipe of at least one rubber ingredient selected from natural rubber and diene rubbers, a softener, an organic vulcanization accelerator and sulfur as well as at least 30 wt.% of carbon black having an average iodine adsorption value of 40-90 mg/g and an average DBP absorption value of 60-140 ml/100 g, and has a dynamic modulus of elasticity E' at 100.degree. C. under 2% elongation given by E'.gtoreq.6.0.times.10.sup.7 dyne/cm.sup.2, a dynamic loss angle tan.delta. given by tan.delta..ltoreq.0.095 and a tensile strength of not less than 100 kg/cm.sup.2 as properties after vulcanization.

REFERENCES:
patent: 3674078 (1972-07-01), Sasaki et al.
patent: 3682223 (1972-08-01), Simpson
patent: 4193437 (1980-03-01), Powell
patent: 4209050 (1980-06-01), Yoshida et al.
patent: 4244414 (1981-01-01), Uemura et al.

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