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Pneumatic tire and manufacturing method therefor

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

Active Publication Date: 2019-09-20
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 manufacturing method therefor
  • Pneumatic tire and manufacturing method therefor
  • Pneumatic tire and manufacturing method therefor

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 The tires of Comparative Examples 1 to 5 and Examples 1 to 3 were coated with a release agent on the inner surface, the use of a bladder provided with a coating layer of the release agent during vulcanization, and the thickness (μm) of the release agent on the inner surface of the tire.

[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 2, the releas...

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Abstract

The present invention provides a pneumatic tire and a manufacturing method therefor, wherein adhesion of a sound absorption material and air retention can both be achieved without tire productivity being degraded due to the sound absorption material being affixed while a mold release agent is adhered to a tire inner surface. A pneumatic tire that has been vulcanized using a bladder provided with a coating layer, said coating layer comprising a mold release agent, wherein a sound absorption material 6 is fixed, along a tire circumferential direction, to an inner surface of a tread section 1 with an adhesive layer 7 interposed therebetween, and at least in a region where the sound absorption material 6 is fixed, the thickness of the mold release agent as detected by electron microscope is 0.1[mu]m-100[mu]m.

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
CPCB60C19/002B29C33/02B29D30/0654B29D30/0662B29D30/0681B29D2030/0665B29D2030/0697B29C33/58B29D2030/0655
Inventor 干场崇史成濑雅公
Owner THE YOKOHAMA RUBBER CO LTD
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