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Pneumatic tire and method of manufacturing the same

A technology of pneumatic tires and tires, applied in the field of flexible belts, to achieve the effect of improving ride comfort and driving stability

Inactive Publication Date: 2006-06-07
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And it is known that no additional components or layers are placed on the inner side of the tire in order not to break the seal

Method used

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  • Pneumatic tire and method of manufacturing the same
  • Pneumatic tire and method of manufacturing the same
  • Pneumatic tire and method of manufacturing the same

Examples

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Embodiment Construction

[0014] According to the present invention, a pneumatic tire 1 includes a tread portion 2, a pair of sidewall portions 3, a pair of bead portions 4, a carcass 6 extending between the bead portions 4 via the tread portion 2 and the sidewall portions 3, and a diameter To the belt layers 7, 9 arranged outside the carcass 6 in the tread portion 2.

[0015] The carcass 6 is composed of at least one ply 6A whose cords are arranged radially at an angle in the range of 70 to 90 degrees with respect to the tire equator CO and which passes through the tread portion 2 and the sidewall The portion 3 extends between the bead portions 4 and is rolled around the bead core 5 in each bead portion 4 from the axially inner side to the axially outer side of the tire, thereby forming a pair of turned up portions 6b and a main body therebetween. Section 6a.

[0016] The belt layer comprises a breaker layer 7 and optionally a belt layer 9 . The breaker layer 7 comprises at least two cross plies 7A ...

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Abstract

A pneumatic tire comprising a tread portion, a pair of sidewall portions, a pair of bead portions, and a carcass, and the carcass extends between the bead portions through the tread portion and the sidewall portions, wherein the carcass Radially inside, the tread portion is provided with a tread band having a thickness not exceeding 2.0 mm and having a tensile modulus of elasticity greater than that of any rubber present between the tread band and the adjacent carcass cords modulus of elasticity. A method of manufacturing the pneumatic tire includes: vulcanizing a tire main body other than a tread band, and attaching the tread band to an inner side of the vulcanized tire main body.

Description

technical field [0001] The present invention relates to a pneumatic tire and a method of manufacturing the same, and more particularly, to a flexible belt arranged on the inner side of a tread portion to improve the ride comfort and driving stability of the tire. Background technique [0002] In pneumatic tires, especially those used for passenger vehicles, in order to improve driving stability, the traditional approach is to adjust properties such as the hardness and modulus of the rubber components used therein, and to set Reinforcement cord layers such as tread belt layers and bead reinforcement layers increase the rigidity of the sidewall portion and / or the tread portion. Such rigidity-increasing techniques generally degrade ride comfort. [0003] On the other hand, for use without an inner tube, a pneumatic tire is traditionally provided along its inner surface with an inner liner made of an airtight rubber compound. And it is known that no additional components or la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C9/18B29D30/30
CPCB60C5/14B60C9/14B60C9/18Y10T152/10171Y10T152/1018Y10T152/10234Y10T152/10495
Inventor 长谷川裕贡汤川直树
Owner SUMITOMO RUBBER IND LTD