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Production method of pneumatic tire and pneumatic tire

A technology for pneumatic tires and production methods, applied to the reinforcement layer of pneumatic tires, tire parts, tires, etc., can solve problems such as poor vulcanization, and achieve the effects of reducing the formation of defects and reducing bad vulcanization

Active Publication Date: 2017-02-08
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the above-mentioned production method, since pressure is applied to the green tire h at the time of shaping and vulcanization, there is a problem that the gap between the inner liner rubber a and the carcass ply b or between the carcass ply b and the rubber Air between components g (such as tread rubber e) becomes trapped air and causes poor vulcanization, such as defects

Method used

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  • Production method of pneumatic tire and pneumatic tire
  • Production method of pneumatic tire and pneumatic tire
  • Production method of pneumatic tire and pneumatic tire

Examples

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Embodiment Construction

[0034] Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings.

[0035] like figure 1 As shown in , a pneumatic tire 1 of this embodiment (hereinafter simply referred to as "tire") includes: an annular carcass 6 extending from a tread portion 2 through a sidewall portion 3 to a bead core 5 of a bead portion 4; The belt layer 7 provided outside the carcass 6 in the radial direction and provided inside the tread portion 2 ; and the inner liner rubber 9 provided inside the carcass 6 and forms a tire cavity surface 9 s. For example, the pneumatic tire 1 of the present embodiment is formed as a tire for passenger cars.

[0036] The carcass 6 includes at least one carcass ply 6A, in this embodiment a single carcass ply 6A. This carcass ply 6A includes: a main body portion 6a extending from the tread portion 2 through the sidewall portion 3 to the bead core 5 of the bead portion 4; and extending from the main bo...

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Abstract

The object of the present invention is to suppress the occurrence of defects during vulcanization. A method for producing a pneumatic tire comprising: a carcass ply forming step of covering both surfaces of a cord array on which a carcass cord is arranged with a topping rubber; a step for forming a green tire including a carcass; and The step used to vulcanize green tires. The carcass ply forming step includes a step for arranging air-absorbing organic fiber cords not covered with rubber on at least one surface of the carcass ply such that the fiber cords intersect the carcass cords.

Description

technical field [0001] The present invention relates to a production method of a pneumatic tire and a pneumatic tire capable of reducing the formation of defects during vulcanization. Background technique [0002] First, in the production method of pneumatic tires, for example, as Figure 9 As shown in (a), the sheet-like inner liner rubber a and carcass ply b are wound on a cylinder molding machine f, and bead cores j etc. are inserted into the inner liner rubber a and carcass ply b to form a circle Cylinder i. Secondly, if Figure 9 As shown in (b), the cylinder i is formed in a ring shape. Then, a rubber member g such as a belt d and a tread rubber e is adhered to the outer surface of the formed carcass ply b to form a green tire h (corresponding to an unvulcanized tire). [0003] Thereafter, the raw tire h is vulcanized in a vulcanization mold (not shown) to form a pneumatic tire. Related documents are as follows (see Patent Document 1). [0004] Related technical li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D30/38B60C9/10
CPCB29D30/36B60C2019/008B60C9/09B29D30/3057B29D30/08
Inventor 足立幸繁大西庆
Owner SUMITOMO RUBBER IND LTD