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Pneumatic tire and method for producing same

A technology for a pneumatic tire and a manufacturing method, applied to pneumatic tires, tire parts, tires, etc., can solve the problems of insufficient removal of mold release agents, deterioration of tire productivity, poor tire productivity, etc., and achieve the effect of good air retention

Pending Publication Date: 2019-09-17
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a step of peeling the film after vulcanization is required, and the production time increases, so there is a problem that the productivity of the tire deteriorates.
In addition, there is a proposal to clean the inner surface of the tire with the release agent attached, but the release agent cannot be sufficiently removed by such a method, and there is a problem that the tire productivity is poor

Method used

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  • Pneumatic tire and method for producing same
  • Pneumatic tire and method for producing same
  • Pneumatic tire and method for producing same

Examples

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Effect test

example

[0048] Manufactured: The tire size is 275 / 35ZR20, in the pneumatic tire with the sound absorbing member fixed on the inner surface of the tread portion along the tire circumferential direction through the adhesive layer, the removal method of the release agent is set as shown in Table 1, and the tire Application of a release agent on the inner surface, use of a bladder provided with a coating layer formed of a release agent during vulcanization, and the amount (% by weight) of the release agent (silicon) on the inner surface of the tire in Comparative Examples 1 to 5 and Examples 1 to 5 3 tires.

[0049] In Comparative Example 1, a release agent was applied to the inner surface of the tire, and the removal of the release agent was not performed. In addition, in Comparative Examples 2 to 4, a mold release agent was applied to the inner surface of the tire, and the mold release agent was removed after the vulcanization process was completed. Specifically, in Comparative Example...

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Abstract

Provided are: a pneumatic tire which has achieved a good balance between air retention ability and adhesion of a sound-absorbing material without deteriorating the tire productivity by bonding a sound-absorbing material to the inner surface of a tire, while having had a mold release agent adhere to the inner surface of the tire; and a method for producing this pneumatic tire. A pneumatic tire which is vulcanized using a bladder that is provided with a coating layer that is composed of a mold release agent, and wherein: a sound-absorbing material 6 is affixed to the inner surface of a tread part 1 in the tire circumferential direction, with a bonding layer 7 being interposed therebetween; and the amount of silicon in the mold release agent as detected by an X ray fluorescence analysis method is from 0.1% by weight to 10.0% by weight at least in a region where the sound-absorbing material 6 is affixed.

Description

technical field [0001] The present invention relates to a pneumatic tire and its manufacturing method. More specifically, it relates to a method for adhering a sound-absorbing member with a release agent attached to the inner surface of the tire, thereby achieving both air retention and adhesiveness of the sound-absorbing member Pneumatic tire and its manufacturing method without deteriorating tire productivity. Background technique [0002] One of the causes of tire noise is cavity resonance sound caused by vibration of air filling the tire cavity. When the vehicle is running, the tread portion of the tire in contact with the road surface vibrates due to unevenness of the road surface, and the vibration vibrates the air in the tire cavity to generate the cavity resonance sound. The cavity resonance sound has a frequency range that becomes noise, and reducing the noise level in this frequency range is important for reducing tire noise. [0003] As a method of reducing the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C5/00B29C33/02B29C33/58B29D30/06
CPCB60C5/00B60C5/14B60C19/002B29C33/58B29C33/62B29D30/0061B29C33/02B29D30/0681B29C37/0067B29C33/64
Inventor 成濑雅公干场崇史
Owner THE YOKOHAMA RUBBER CO LTD
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