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Pneumatic tire and method for producing same

A technology of pneumatic tires and manufacturing methods, applied to tires, other household appliances, household appliances, etc., which can solve the problems of increased manufacturing time, poor tire productivity, and deterioration of tire productivity, so as to ensure puncture sealing and prevent rolling resistance. worsening effect

Active Publication Date: 2020-04-21
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 method for producing same
  • Pneumatic tire and method for producing same
  • Pneumatic tire and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0048] Manufactured: In a pneumatic tire having a tire size of 255 / 40R20 and a sealant layer arranged along the tire circumferential direction on the inner surface of the tread portion, the removal method of the release agent was set as shown in Table 1 and Table 2, and the method of removing the release agent into the tire was produced. Comparative example of coating release agent on the surface, use of a bladder provided with a coating layer composed of a release agent during vulcanization, amount [% by weight] of release agent (silicon) on the inner surface of the tire, and thickness [mm] of the sealant layer 1-5 and the tires of Examples 1-7.

[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 ...

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Abstract

Provided are a pneumatic tire and a method for producing the same, wherein both air retention and sealant layer adhesion can be achieved without deteriorating tire productivity by attaching a sealantlayer in a state in which a release agent is adhered to the inner surface of the tire. This pneumatic tire is a vulcanized pneumatic tire using a bladder provided with a coating layer containing a release agent, wherein a sealant layer 6 is disposed, on the inner surface of a tread portion 1, along the circumferential direction of the tire, and the amount of silicon in the release agent as detected by fluorescent X-ray analysis is 0.1-10.0 wt% in at least a region in which the sealant layer 6 is disposed.

Description

technical field [0001] The present invention relates to a pneumatic tire and its manufacturing method. More specifically, it relates to a pneumatic tire capable of achieving both air retention and adhesiveness of the seal layer by affixing a seal layer with a release agent attached to the inner surface of the tire. Pneumatic tire which does not deteriorate tire productivity and its manufacturing method. Background technique [0002] As a pneumatic tire having puncture-tightness, a pneumatic tire is proposed in which a sealing layer made of an adhesive sealant is disposed on a region of the tire inner surface corresponding to the tread portion (for example, Patent Document 1). In a pneumatic tire equipped with such a sealing layer, when a foreign matter such as a nail penetrates into the tread portion, the adhesive sealant sticks to the foreign matter, and as the foreign matter falls off, the adhesive sealant is guided to the puncture hole and exerts its Sealing effect. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/58B29C33/02B29C35/02
CPCB29C33/58B29D30/0685B29D2030/0695B29D2030/0655B29D30/0654B29C33/64B29C35/02B29C73/16B29D30/0601
Inventor 成濑雅公干场崇史
Owner THE YOKOHAMA RUBBER CO LTD
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