Pneumatic tire and its manufacturing method

A technology for a pneumatic tire and a manufacturing method, which is applied to the reinforcement layer, tire parts, tires and other directions of the pneumatic tire, and can solve problems such as slippage and inability to travel.

Inactive Publication Date: 2016-01-20
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially on icy and snowy roads, once this kind of warping occurs, skidding will occur due to the reduction of the contact area between the tire and the icy and snowy road, and even problems such as inability to drive will occur.

Method used

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  • Pneumatic tire and its manufacturing method
  • Pneumatic tire and its manufacturing method
  • Pneumatic tire and its manufacturing method

Examples

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example

[0077] The tire size is the common size, namely 205×55R15. figure 1 In the tire 1 of the present invention (Example 1), a run-flat reinforcing layer made of rubber and having a crescent-shaped cross-sectional shape is arranged on the inner surface of the left and right sidewalls, and the inner surface of the tread is provided as shown in Table 1. The tread reinforcement layer is composed of thermoplastic elastomer composition (storage elastic modulus 60MPa). figure 1 In the tire 2 of the present invention (Example 2), a run-flat reinforcing layer composed of a thermoplastic resin (storage modulus of elasticity: 60 MPa) shown in Table 2 and having a crescent-shaped cross-sectional shape is disposed on the inner surfaces of the left and right side walls. , A tread reinforcement layer made of the same thermoplastic resin is also provided inside the tread portion. In addition, for the tire 1 of the present invention, a conventional tire (conventional tire) without a tread reinfor...

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Abstract

The invention relates to a pneumatic tire and a manufacturing method thereof. The left and right sidewalls (2) of the pneumatic tire are provided with a run-flat reinforcement layer (10) capable of ensuring that the vehicle continues to run when the tire is deflated. A tread reinforcing layer (12) composed of a thermoplastic resin or a thermoplastic elastomer composition obtained by mixing a thermoplastic resin component and an elastomer component is disposed on the inner surface of the tread portion (1). The manufacturing method includes: when forming a raw tire provided with a tread reinforcement layer, installing a preformed tread reinforcement layer wound in the circumferential direction in the form of a belt made of a thermoplastic resin or a thermoplastic elastomer composition. material, and then shape the green tire. By adopting the present invention, it is possible to suppress the warpage generated when driving under the deflated state, and improve the running performance under the deflated state on the ice and snow road.

Description

technical field [0001] The invention relates to a pneumatic tire with the function of running flat and its manufacturing method. Background technique [0002] We already know that there is such a pneumatic tire, that is, a reinforcement layer made of high-hardness rubber and a crescent-shaped cross-section is arranged on the left and right side walls. When the tire is in a deflated state due to a puncture, the reinforcement layer can be used. Bearing the load keeps the vehicle moving. (See Japanese Patent Laid-Open Publication No. 2008-37114, Japanese Patent Laid-Open Publication No. 2008-37117). [0003] Such a pneumatic tire having a run-flat function due to the reinforcing layer tends to warp at the tread portion when running in a deflated state. Especially on icy and snowy roads, once this kind of warping occurs, skidding will occur due to the reduction of the contact area between the tire and the icy and snowy road, and even problems such as inability to drive will ap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C9/00B60C13/00B29D30/08
CPCB29D30/0681B29D30/08B29D2030/0683B60C9/18B60C17/0009Y10T152/10765
Inventor 森将一
Owner THE YOKOHAMA RUBBER CO LTD
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