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Pneumatic tire

A technology for pneumatic tires and tread parts, applied to tire parts, tires, wheels, etc., can solve problems such as rupture of protective rubber sheets and deterioration of tire uniformity, achieve flow suppression, reduce the generation of decomposition gas, and prevent uniformity the worsening effect of

Inactive Publication Date: 2009-09-16
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If you drive in such a state, there is a problem that the protective rubber sheet 6 is broken, and the uniformity of the tire is deteriorated.

Method used

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  • Pneumatic tire
  • Pneumatic tire
  • Pneumatic tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0042] The tire size and the structure of the adhesive sealant layer 5 were different as shown in Table 1, and conventional tires (conventional examples 1 and 2), inventive tires (examples 1 and 2), and comparative tires (comparative examples) were produced. In addition, the structure of each tire is set as figure 1 As shown in the adhesive sealant material, a rubber composition composed of a rubber component decomposed by peroxide is used.

[0043] For these five types of tires, the sealing properties and uniformity were evaluated by the following test methods, and the results are combined and described in Table 1.

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Abstract

A pneumatic tire that having an adhesive sealant layer disposed inside its tread portion, attains an enhancement of uniformity. In pneumatic tire (T) having adhesive sealant layer (5) disposed inside inner liner (4) in a region corresponding to tread portion (1), the adhesive sealant layer (5) consists of a laminate of auxiliary rubber layer (5a) of 40% or below compression set disposed on the side of inner liner layer (4) and, disposed thereinside, adhesive sealant material (5b).

Description

Technical field [0001] The present invention relates to a pneumatic tire, and more specifically, to a pneumatic tire capable of improving the uniformity of a tire in which an adhesive sealant layer is arranged on the inner side of a tread portion. Background technique [0002] In order to ensure the safety of the vehicle when it is rolled on a nail or the like during driving, many pneumatic tires have been proposed in which an adhesive sealant layer is arranged on the inner side of the tread portion to avoid a sharp drop in air pressure caused by piercing. [0003] The adhesive sealant layer has fluidity, so in an exposed state, drift occurs during storage, making it difficult to perform rim assembly operations. Therefore, in order to avoid these troubles, the common method is to cover the surface with a protective rubber sheet. [0004] However, if the pneumatic tire runs at a high speed, the adhesive sealant flows concentrated in the central area of ​​the tire width direction d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C19/12B29C73/20
CPCB29D2030/0695B29L2030/00B60C19/122B29D30/0685B29C73/20Y10T152/10243Y10T152/10684
Inventor 关口巧
Owner THE YOKOHAMA RUBBER CO LTD
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