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Pneumatic tire and manufacturing method of the same

A technology for pneumatic tires and a manufacturing method, which is applied to pneumatic tires, special tires, tire parts, etc., can solve the problems of easy peeling at the end and high elastic modulus, and achieve the effect of inhibiting peeling and improving peeling failure.

Inactive Publication Date: 2010-06-30
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the elastic modulus of the film-like inner liner formed of thermoplastic resin or thermoplastic elastomer composition is higher than that of rubber, so the end is prone to peeling, and a solution is strongly required.

Method used

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  • Pneumatic tire and manufacturing method of the same
  • Pneumatic tire and manufacturing method of the same
  • Pneumatic tire and manufacturing method of the same

Examples

Experimental program
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Embodiment 1

[0047] made with figure 1100 tires of the invention tires 1 to 5 (Examples 1 to 5) and conventional tires without dimples (conventional example) each having the configuration shown above, the tire size is the same, 205 / 55R16, and the tires of the invention are arranged on the inner surface of the tire There is a 20 μm thick innerliner (with the end at a position 15 mm from the bead toe) formed of the thermoplastic elastomer composition shown in Table 1, and the tire inner surface region corresponding to the end of the innerliner has a concave portion.

[0048] Table 2 shows the depth of the recesses, the intervals of the recesses arranged at predetermined intervals in the tire circumferential direction, the width of the recesses, and the lengths of the recesses extending from the end of the inner liner to the outer and inner sides in the tire radial direction of tires 1 to 5 of the present invention. In addition, the depths of the concave portions of tires 1 to 5 of the presen...

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Abstract

Provided are a pneumatic tire and a manufacturing method of the same capable of improving a separation failure at end portions of an inner liner layer made of either a thermoplastic resin or a thermoplastic elastomer composition. The pneumatic tire includes an inner liner layer made of either a thermoplastic resin or a thermoplastic elastomer composition obtained by blending a thermoplastic resin component and an elastomer component. The inner liner layer is provided on an inner side of the tire so as to face a tire cavity. A recessed portion is formed in an internal surface area of the tire where an end portion of the inner liner layer is located.

Description

technical field [0001] The present invention relates to a pneumatic tire and its manufacturing method, and more specifically, to a pneumatic tire in which the end peeling failure of an inner liner formed of a thermoplastic resin or thermoplastic elastomer composition is improved, and its manufacturing method. Background technique [0002] Currently, a pneumatic tire using a film formed of a thermoplastic resin or a thermoplastic elastomer composition in which a thermoplastic resin component is mixed is known (see, for example, Patent Documents 1 and 2) as an inner liner and elastomer components. This has the advantage that the inner liner can be made lighter and fuel consumption can be improved. [0003] However, a film-like inner liner made of a thermoplastic resin or a thermoplastic elastomer composition has a higher modulus of elasticity than rubber, so peeling tends to occur at its ends, and a countermeasure is strongly demanded. [0004] Patent document 1: WO2005 / 0074...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C1/00B29D30/08
CPCB29D30/0681B29D30/0654B29D2030/0655B29D30/0005B60C5/142B60C1/0008B60C2013/026B29D2030/0682B29D30/08Y10T152/10819
Inventor 岸添勇
Owner THE YOKOHAMA RUBBER CO LTD