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Method for manufacturing pneumatic tire

A manufacturing method and technology of pneumatic tires, applied to pneumatic tires, tire parts, tires, etc., can solve problems such as insufficient adhesion, durability problems, and deterioration of the fixed state of sound-absorbing parts, so as to achieve easy installation and improved durability Sex, good sound-absorbing effect

Active Publication Date: 2009-12-23
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, when the sound-absorbing member is attached to the outer peripheral surface of the rim of the tire, the sound-absorbing member hinders the rim assembly work.
On the other hand, when the sound absorbing material is attached to the inner surface of the tire (for example, refer to Patent Documents 1 to 2), there is a problem in terms of durability.
That is, when a sound-absorbing material made of a porous material such as polyurethane foam is fixed to the inner surface of the tire using a rubber-based adhesive or an adhesive tape, the adhesive force may be insufficient, and the sound-absorbing material may fall off from the inner surface of the tire.
In particular, the mold release agent during vulcanization adheres to the inner surface of the tire, so the presence of the mold release agent deteriorates the fixing state of the sound absorbing material
Also, when fixing the sound absorbing material after removing the mold release agent adhering to the inner surface of the tire, the fixing state of the sound absorbing material is improved, but the installation work of the sound absorbing material becomes extremely complicated

Method used

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  • Method for manufacturing pneumatic tire
  • Method for manufacturing pneumatic tire

Examples

Experimental program
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Embodiment

[0040] Pneumatic tires with a tire size of 215 / 60R16 95H and a sound-absorbing member made of polyurethane foam fixed to the inner liner on the inner surface of the tire were manufactured using different manufacturing methods (Examples 1 to 2 and Comparative Examples 1 to 3). In addition, in the manufacturing process of the above-mentioned pneumatic tire, the rise rate of the carcass layer was 140%, and a polyurethane foam with an elongation rate of 160% was used.

[0041] In Example 1, an inner liner composed of a thermoplastic elastomer composition in which an elastomer (bromobutyl rubber) is dispersed in a thermoplastic resin (nylon 6, 66) was used, and the soft material was molded by flame bonding. A sound-absorbing member made of polyurethane foam is fixed to a green tire on the inner liner, and the green tire is then vulcanized.

[0042] In Example 2, using an inner liner made of the same thermoplastic elastomer composition as in Example 1, a green tire was formed in whi...

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Abstract

The present invention provides a method for manufacturing a pneumatic tire, the method enabling a sound-absorbing member to be easily mounted on the tire with an improved fixation of the sound-absorbing member onto an inner surface of the tire. The method for manufacturing a pneumatic tire of the present invention includes the steps of: forming a green tire including an inner liner layer and a sound-absorbing member, the inner liner layer disposed in an inner surface of the tire and made of any one of a thermoplastic resin and a thermoplastic elastomer composition obtained by dispersing an elastomer in a thermoplastic resin, the sound-absorbing member fixed onto the inner liner layer and made of a porous material; and thereafter curing the green tire.

Description

technical field [0001] The present invention relates to a method of manufacturing a pneumatic tire having a sound-absorbing member made of a porous material on the inner surface of the tire. More specifically, it relates to a method of manufacturing a pneumatic tire in which the installation of the sound-absorbing member is easy and the fixing state of the sound-absorbing member to the inner surface of the tire can be improved. . Background technique [0002] In pneumatic tires, one of the causes of noise is cavity resonance sound due to vibration of air filled inside the tire. When the tire rolls, the tread portion vibrates due to unevenness of the road surface, and the vibration of the tread portion vibrates the air inside the tire, thereby generating the cavity resonance sound. [0003] As a means of reducing the noise generated by such cavity resonance sound, it has been proposed to arrange a sound absorbing material in the cavity formed between the tire and the rim of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/08B29C35/02B60C5/00B60C19/00
CPCB29D30/16B29D2030/0682B29D30/30B29D30/00B60C19/002
Inventor 仓森章
Owner THE YOKOHAMA RUBBER CO LTD
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