Pneumatic tire

A technology of pneumatic tires and tires, which is applied to tire parts, wheels, transportation and packaging, etc., which can solve the problems of poor sealing performance in the shoulder area, insufficient performance of anti-noise performance, and inability to perform puncture sealing functions, etc. Achieve good anti-noise performance and ensure the effect of porous structure

Active Publication Date: 2010-12-08
YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, it has the following problems: because the sealant liquid has fluidity, due to the centrifugal force during high-speed driving, the sealant liquid will gather along the inner wall of the tread portion to the middle area in the tire width direction, resulting in the tightness of the shoulder area. Deteriorated to function as a puncture seal
[0005] However, due to the impregnation of the sealant solution in the porous material, a considerable number of continuous pores are blocked, so the noise-proof performance of the existing pneumatic tire has not been fully utilized.

Method used

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Examples

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Embodiment

[0072] Prepare the pneumatic tire of the embodiment of the present invention 1, its parameter is: tire ruler 195 / 65R15ES300, tire structure such as figure 1 As shown, the inner circumference of the tire = 1887mm, the maximum width of the belt layer W 3 =165mm, sealing layer width W 2 =160mm (thickness 3.5mm, mass 750g), sound-absorbing layer width W 1 =130mm (thickness 15mm, mass 100g).

[0073] The sound-absorbing layer of the pneumatic tire in Example 1 is made of polyurethane foam with continuous pores, and an isolation layer containing thermoplastic elastomer resin and having a thickness of 0.1 mm is arranged outside the sound-absorbing layer. Furthermore, the relationship between the mass Ms per unit circumferential length of the sealing layer and the mass Ma per unit circumferential length of the sound absorbing layer is Ma / Ms=0.13.

[0074] As Comparative Example 1, a pneumatic tire in which a sound absorbing layer and an insulating layer were not provided in the tir...

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Abstract

A pneumatic tire including a sealant layer formed from a sealant fluid having adhesive properties that is provided on a tire inner circumferential surface corresponding with a tread portion; and a sound absorbing layer formed from a porous material that is provided via a barrier layer impermeable to the sealant fluid on an inner circumferential surface of the sealant layer; wherein a width W1 of the sound absorbing layer in a tire width direction is from 50 to 90% of a width W2 of the sealant layer in the tire width direction. The pneumatic tire has good puncturing seal property and noise preventing property.

Description

technical field [0001] The present invention relates to a pneumatic tire, and more specifically relates to a pneumatic tire with puncture sealing performance and anti-noise performance. Background technique [0002] In the past, widely known pneumatic tires are provided with a sealing layer coated with a viscous fluid sealant liquid on the inner peripheral surface of the tread portion of the pneumatic tire. When the tire is punctured due to running over a nail, etc. The liquid flows into the puncture hole formed after the nail is pulled out by centrifugal force, thereby self-sealing. [0003] But it has the following problems: because the sealant liquid has fluidity, due to the centrifugal force during high-speed driving, the sealant liquid will gather along the inner wall surface of the tread portion to the middle area in the tire width direction, resulting in the tightness of the shoulder area. Deteriorated to perform the puncture seal function. [0004] In order to solv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C19/00
CPCB60C19/122B60C19/002B60C19/125Y10T152/10693Y10T152/10495Y10T152/10711Y10T152/10036Y10T152/10684Y10T152/10666
Inventor 丹野笃
Owner YOKOHAMA RUBBER CO LTD
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