JPH0929858A - Manufacture of tire - Google Patents
Manufacture of tireInfo
- Publication number
- JPH0929858A JPH0929858A JP7180261A JP18026195A JPH0929858A JP H0929858 A JPH0929858 A JP H0929858A JP 7180261 A JP7180261 A JP 7180261A JP 18026195 A JP18026195 A JP 18026195A JP H0929858 A JPH0929858 A JP H0929858A
- Authority
- JP
- Japan
- Prior art keywords
- winding
- manufacturing
- inner liner
- ribbon
- tire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 47
- 229920001971 elastomer Polymers 0.000 claims abstract description 44
- 239000005060 rubber Substances 0.000 claims abstract description 44
- 238000004804 winding Methods 0.000 claims abstract description 20
- 238000000465 moulding Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 14
- 238000010276 construction Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 description 7
- 238000003860 storage Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010058 rubber compounding Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0681—Parts of pneumatic tyres; accessories, auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0681—Parts of pneumatic tyres; accessories, auxiliary operations
- B29D2030/0682—Inner liners
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明はタイヤの製造方法に
関するもので、特に、建設車両用または産業車両用など
の大型タイヤを構成する中間部材の一つであるインナー
・ライナーを製造する方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a tire, and more particularly to a method for manufacturing an inner liner which is one of intermediate members constituting a large tire for construction vehicles or industrial vehicles. Is.
【0002】[0002]
【従来の技術】一般に、タイヤを構成する中間部材の一
つであるインナー・ライナーは、天然または合成ゴムに
加硫剤、充填剤などのゴム配合剤を混合し混練りされた
ゴムをカレンダーで、タイヤ・サイズ毎の所定の幅と1
乃至4mm程度の均一な厚さのシート状に圧延し、非粘
着性シートを介在させながら一旦巻き取って台車上に保
管しておき、成型工程でこのゴム・シートが巻き戻され
て、タイヤ・サイズ毎に必要な長さに切断され、成型ド
ラムの上に1回または複数回巻き付けられることによっ
て製造される。その結果、タイヤ・サイズが増加する
と、台車の数が増加しまた台車保管のスペースが増加す
るという不具合があった。さらに、建設車両用または産
業車両用タイヤなどのような、大型または超大型のタイ
ヤを製造する場合、使用されるインナー・ライナーの幅
が極めて大ききなもので、従来のカレンダーの圧延幅の
限界能力をオーバーすることがある。タイヤの大型化に
ともなって、大型カレンダーを新設すれば安易に解決で
きる問題であるが、しばしば大型タイヤの生産量に見合
う額以上の投資が要求されることが多く、また台車や非
粘着性シートなどの付属関連品も新規大型のものに変え
る必要があり、商業生産ベースでは採用しがたいことが
ある。そこで、従来は、タイヤの大型化にともなって不
足するインナー・ライナーの幅を、狭幅ゴム・シートを
継ぎ足して補う方法が採用されている。しかし、このよ
うな方法では、当然製造工数の増加によるコストが増加
したり製品精度が低下するという不具合が生じていた。
また、通常はゴム・シートを幅方向に一部重複して継ぎ
足しているので、原材料コスト増加およびタイヤの重量
増加という不具合が生じていた。2. Description of the Related Art In general, an inner liner, which is one of the intermediate members constituting a tire, is made by mixing a natural or synthetic rubber with a rubber compounding agent such as a vulcanizing agent and a filler and kneading the rubber with a calender. , A predetermined width for each tire size and 1
It is rolled into a sheet with a uniform thickness of approximately 4 mm to 4 mm, and is temporarily wound with a non-adhesive sheet interposed and stored on a trolley, and this rubber sheet is unwound during the molding process, It is manufactured by cutting it to the required length for each size and winding it once or several times on a molding drum. As a result, when the tire size increases, the number of trucks increases and the truck storage space also increases. Furthermore, when manufacturing large or very large tires such as tires for construction vehicles or industrial vehicles, the width of the inner liner used is extremely large, which limits the rolling width of conventional calendars. May exceed capacity. With the increase in size of tires, it is a problem that can be easily solved by installing a new large calendar, but often investment more than the amount corresponding to the production volume of large tires is required, and also trolleys and non-adhesive sheets It is also necessary to change accessory-related items such as those to new large ones, and it may be difficult to adopt them on a commercial production basis. Therefore, conventionally, a method has been adopted in which the width of the inner liner, which is insufficient due to the increase in size of the tire, is supplemented by adding a narrow rubber sheet. However, such a method naturally causes problems such as an increase in cost due to an increase in manufacturing man-hours and a decrease in product accuracy.
In addition, since rubber sheets are usually partially overlapped in the width direction, there have been problems such as an increase in raw material costs and an increase in tire weight.
【0003】[0003]
【発明が解決しようとする課題】本発明の目的は、上記
のような従来技術の欠点を解消して、台車や台車保管の
スペースを不要とし、生産のための投資コストを抑制
し、生産性を低下せずかつ余分なゴムを使用することな
く、成型時間が短く作業効率の高い、インナー・ライナ
ーの製造方法を提供することである。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks of the prior art, to eliminate the need for a trolley or a trolley storage space, reduce the investment cost for production, and improve productivity. It is an object of the present invention to provide a method for producing an inner liner that does not decrease the molding temperature and does not use extra rubber and that has a short molding time and high working efficiency.
【0004】[0004]
【課題を解決するための手段】上記目的を達成するため
に、本発明による空気入りタイヤの製造方法は、(1)
ゴム押し出し機から厚さ2乃至20mm程度、幅50乃
至300mm程度のリボン状のグリーン・ゴム層を押し
出して、成型ドラムの上に幅方向にずらしながら順次巻
き付けて行くことによってインナー・ライナーを成型す
ること、(2)該ゴム押し出し機と該成型ドラムとの間
に首振りカッターを備えていること、(3)該リボン状
のグリーン・ゴム層の巻き付けおよび横行速度が可変で
あることことを特徴とするタイヤの製造方法である。In order to achieve the above object, the method for producing a pneumatic tire according to the present invention comprises (1)
The inner liner is molded by extruding a ribbon-shaped green rubber layer with a thickness of 2 to 20 mm and a width of 50 to 300 mm from a rubber extruder and sequentially winding it on the molding drum while shifting it in the width direction. (2) A swing cutter is provided between the rubber extruder and the molding drum, and (3) winding and traverse speeds of the ribbon-shaped green rubber layer are variable. And a method for manufacturing a tire.
【0005】上記目的を達成するために、本発明による
空気入りタイヤの製造方法は、首振りカッターにより、
リボン状のグリーン・ゴム層の巻始めと巻き終わりの不
要なゴムを切除し、シャープ・エッヂを形成することが
好ましい。In order to achieve the above object, the method of manufacturing a pneumatic tire according to the present invention comprises
It is preferable to cut off unnecessary rubber at the beginning and end of winding of the ribbon-shaped green rubber layer to form a sharp edge.
【0006】上記目的を達成するために、本発明による
空気入りタイヤの製造方法では、インナー・ライナーの
幅方向の任意の個所で、リボン状のグリーン・ゴム層の
巻き付け回数をその他の個所より多くすることにより幅
方向の任意の個所で大きな厚みを有するインナー・ライ
ナーを製造することが好ましい。In order to achieve the above object, in the method of manufacturing a pneumatic tire according to the present invention, the number of windings of the ribbon-shaped green rubber layer is set to be larger at any position in the width direction of the inner liner than at other positions. By doing so, it is preferable to manufacture an inner liner having a large thickness at any position in the width direction.
【0007】本発明による空気入りタイヤの製造方法で
は、上記のように、ゴム押し出し機からリボン状のグリ
ーン・ゴム層を押し出して、成型ドラムの上に幅方向に
ずらしながら順次巻き付けて行くことによってインナー
・ライナーを成型するので、台車および台車保管のため
のスペースが不要となり、インナー・ライナーの幅を必
要に応じて任意に設定できるので、タイヤの大型化にと
もなって大型カレンダーを新設する必要もない。In the method for manufacturing a pneumatic tire according to the present invention, as described above, the ribbon-shaped green rubber layer is extruded from the rubber extruder and sequentially wound on the molding drum while being shifted in the width direction. Since the inner liner is molded, there is no need for a trolley and space for storing the trolley, and the width of the inner liner can be set as needed, so it is also necessary to newly install a large calendar as the tire gets larger. Absent.
【0008】本発明による空気入りタイヤの製造方法で
は、上記のように、リボン状のグリーン・ゴム層のゴム
押し出し機と成型ドラムとの間に首振りカッターが備え
られているので、この首振りカッターによりリボン状の
グリーン・ゴム層の巻始めと巻き終わりの不要なゴムを
切除して、インナー・ライナーの幅を周上均一にするこ
とが容易におこなえる。また、首振りカッターによって
インナー・ライナーのエッヂがシャープに切断されるの
で、インナー・ライナー割れやエアー入りなどの製造不
良が防止される。In the method for manufacturing a pneumatic tire according to the present invention, as described above, the swing cutter is provided between the ribbon-shaped green rubber layer rubber extruder and the molding drum. With a cutter, unnecessary rubber at the beginning and end of the ribbon-shaped green rubber layer can be cut off to easily make the width of the inner liner circumferentially uniform. Further, since the edge of the inner liner is sharply cut by the swing cutter, manufacturing defects such as cracks in the inner liner and air entering can be prevented.
【0009】本発明による空気入りタイヤの製造方法で
は、上記のように、リボン状のグリーン・ゴム層の巻き
付けおよび横行速度が可変であるので、インナー・ライ
ナーの幅方向の任意の個所で、リボン状のグリーン・ゴ
ム層の巻き付け回数をその他の個所より多くすることに
より幅方向の任意の個所で大きな厚みを有するインナー
・ライナーを製造することが可能となる。つまり、必要
な個所に必要な厚さのゴムを備えたインナー・ライナー
を製造することによってタイヤの軽量化および原材料費
用を低減することができる。また、薄い幅広シートを積
層する必要がなくなるので、シートを積層する工程で発
生したエアー溜まりからエアーを抜き取る工程が不要と
なり、製品(タイヤ)にエアー溜まりが残留するタイヤ
製造上の欠陥もなくなる。In the method for manufacturing a pneumatic tire according to the present invention, as described above, since the winding speed and the traverse speed of the ribbon-shaped green rubber layer are variable, the ribbon can be attached at any position in the width direction of the inner liner. It is possible to manufacture an inner liner having a large thickness at any position in the width direction by making the number of windings of the green rubber layer larger than at other positions. That is, it is possible to reduce the weight of the tire and the cost of raw materials by manufacturing the inner liner having the rubber of the required thickness at the required location. Further, since it is not necessary to stack thin wide sheets, a step of extracting air from the air pool generated in the step of stacking sheets becomes unnecessary, and a defect in tire manufacturing in which an air pool remains in a product (tire) is also eliminated.
【0010】[0010]
【発明の実施の形態】本発明にしたがう実施例について
図面を参照して説明すると、図1は本発明に基づく実施
例1による製造方法を示す図面であり、ゴム押し出し機
(図示省略)から厚さ3.5mm、幅200mmのリボ
ン状のグリーン・ゴム層Rを押し出して、成型ドラムD
の上に幅方向にずらしながら順次巻き付けて行き所定幅
の3000mmに達したところで元に戻し、既に巻き終
わったゴム層の上にリボン状のグリーン・ゴム層Rを積
層しながら前記同様に幅方向にずらしながら順次巻き付
け、この積層を4回繰り返すことによって厚さ14m
m、幅3000mmのインナー・ライナーLが成型され
る。タイヤ・サイズは40.00R57である。ゴム押
し出し機と成型ドラムDとの間に首振りカッターCが備
えられていて、リボン状のグリーン・ゴム層Rの巻始め
と巻き終わりの不要なゴムが切除され、インナー・ライ
ナーLの幅が周上均一になる。また、首振りカッターC
によってインナー・ライナーLのエッヂがシャープに切
断されるので、インナー・ライナー割れやエアー入りな
どの製造不良が防止される。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment according to the present invention will be described with reference to the drawings. FIG. 1 is a drawing showing a manufacturing method according to the first embodiment of the present invention, in which a rubber extruder (not shown) A 3.5 mm wide, 200 mm wide ribbon-like green rubber layer R is extruded to form a molding drum D.
It is wound in the widthwise direction while being wound in order, and returned to the original position when reaching a predetermined width of 3000 mm, and the ribbon-shaped green rubber layer R is laminated on the already wound rubber layer, and the widthwise direction is the same as above. Winding sequentially while shifting, and repeating this lamination 4 times gives a thickness of 14 m.
An inner liner L having a width of m and a width of 3000 mm is molded. The tire size is 40.00R57. A swinging cutter C is provided between the rubber extruder and the molding drum D, and unnecessary rubber at the winding start and winding end of the ribbon-shaped green rubber layer R is cut off, and the width of the inner liner L is reduced. It becomes uniform on the circumference. Also, the swing cutter C
Since the edge of the inner liner L is sharply cut, manufacturing defects such as cracks in the inner liner and air entering are prevented.
【0011】図2は本発明に基づく実施例2による製造
方法により製造されたインナー・ライナーLの横断面を
示す図面であり、リボン状のグリーン・ゴム層Rの巻き
付けおよび横行速度が可変であることによってインナー
・ライナーLの幅方向の任意の個所で、リボン状のグリ
ーン・ゴム層Rの巻き付け回数をその他の個所より多く
することにより幅方向の任意の個所で大きな厚みを有す
るインナー・ライナーLが製造される。FIG. 2 is a view showing a cross section of an inner liner L manufactured by a manufacturing method according to a second embodiment of the present invention, in which winding and traverse speeds of a ribbon-shaped green rubber layer R are variable. As a result, the number of windings of the ribbon-shaped green rubber layer R is increased at any position in the width direction of the inner liner L as compared with other positions, so that the inner liner L having a large thickness at any position in the width direction. Is manufactured.
【0012】図3は従来例による製造方法を示す図面で
あり、厚さ3.5mm、幅2600mmの広幅シートW
と厚さ3.5mm、幅500mmの狭幅シートNを成型
ドラムの上で100mmオーバーラップさせて巻き付け
ながら4層積層し、厚さ14mm、幅3000mmのイ
ンナー・ライナーLが成型される。タイヤ・サイズは実
施例と同じく40.00R57である。FIG. 3 is a drawing showing a conventional manufacturing method, in which a wide sheet W having a thickness of 3.5 mm and a width of 2600 mm is used.
Then, a narrow sheet N having a thickness of 3.5 mm and a width of 500 mm is laminated on the molding drum while being overlapped by 100 mm, and four layers are laminated to form an inner liner L having a thickness of 14 mm and a width of 3000 mm. The tire size is 40.00R57 as in the example.
【0013】本発明による上記実施例1の製造方法と上
記従来例の製造方法を比較するために、実施例1の製造
方法で製造されたタイヤおよび従来例の製造方法で製造
されたタイヤを同一条件で評価した。評価項目は製造不
良修理率およびタイヤ重量である。従来例の製造方法で
製造されたタイヤの製造不良修理率が6%であったが、
実施例1の製造方法で製造されたタイヤの製造不良修理
率は0.5%であった。また、実施例1の製造方法で製
造されたタイヤの重量は、従来例の製造方法で製造され
たタイヤの重量対比99%であった。In order to compare the manufacturing method of Example 1 and the manufacturing method of the conventional example according to the present invention, the tire manufactured by the manufacturing method of Example 1 and the tire manufactured by the manufacturing method of the conventional example are the same. The condition was evaluated. The evaluation items are manufacturing defect repair rate and tire weight. Although the manufacturing defect repair rate of the tire manufactured by the conventional manufacturing method was 6%,
The manufacturing defect repair rate of the tire manufactured by the manufacturing method of Example 1 was 0.5%. The weight of the tire manufactured by the manufacturing method of Example 1 was 99% of the weight of the tire manufactured by the conventional manufacturing method.
【0014】上記の評価結果から、本発明による上記の
実施例1の方式では、従来例の方式に比べると、タイヤ
の製造不良修理率が改良され、また、タイヤの重量も軽
量化されていることがわかる。From the above evaluation results, in the method of the first embodiment according to the present invention, the repair rate of manufacturing defects of the tire is improved and the weight of the tire is reduced as compared with the method of the conventional example. I understand.
【0015】[0015]
【発明の効果】本発明によって、台車や台車保管のスペ
ースを不要とし、生産のための投資コストを抑制し、生
産性を低下せずかつ余分なゴムを使用することなく、成
型時間が短く作業効率の高い、インナー・ライナーの製
造方法を提供することが可能となった。EFFECTS OF THE INVENTION According to the present invention, a trolley and a trolley storage space are not required, an investment cost for production is suppressed, productivity is not lowered, and an extra rubber is not used. It has become possible to provide a highly efficient inner liner manufacturing method.
【0016】[0016]
【図1】本発明の製造方法を示す図面である。FIG. 1 is a drawing showing a manufacturing method of the present invention.
【図2】本発明の製造方法により製造されたインナー・
ライナーの横断面である。FIG. 2 is an inner member manufactured by the manufacturing method of the present invention.
It is a cross section of a liner.
【図3】従来例による製造方法を示す図面である。FIG. 3 is a drawing showing a manufacturing method according to a conventional example.
C 首振りカッター D 成型ドラム L インナー・ライナー N 狭幅シート R リボン状のグリーン・ゴム層 W 広幅シート C Swing cutter D Molding drum L Inner liner N Narrow sheet R Ribbon-shaped green rubber layer W Wide sheet
Claims (3)
押し出し機から厚さ2乃至20mm程度、幅50乃至3
00mm程度のリボン状のグリーン・ゴム層を押し出し
て、成型ドラムの上に幅方向にずらしながら順次巻き付
けて行くことによってインナー・ライナーを成型するこ
と、(2)該ゴム押し出し機と該成型ドラムとの間に首
振りカッターを備えていること、(3)該リボン状のグ
リーン・ゴム層の巻き付けおよび横行速度が可変である
ことを特徴とする建設車両用または産業車両用などの大
型タイヤの製造方法。1. A method for manufacturing a tire, comprising: (1) about 2 to 20 mm in thickness and 50 to 3 in width from a rubber extruder.
Molding the inner liner by extruding a ribbon-shaped green rubber layer of about 00 mm and sequentially winding it on the molding drum while shifting it in the width direction, (2) the rubber extruder and the molding drum. (3) Manufacture of large tires for construction vehicles or industrial vehicles, characterized in that a swinging cutter is provided between them, and (3) winding of the ribbon-shaped green rubber layer and traverse speed are variable. Method.
グリーン・ゴム層の巻始めと巻き終わりの不要なゴムを
切除し、シャープ・エッヂを形成することを特徴とする
請求項1記載のタイヤの製造方法。2. The tire according to claim 1, wherein the swing cutter cuts off unnecessary rubber at the beginning and end of winding of the ribbon-shaped green rubber layer to form a sharp edge. Manufacturing method.
所で、該リボン状のグリーン・ゴム層の巻き付け回数
を、その他の個所より多くすることにより幅方向の任意
の個所で大きな厚みを有するインナー・ライナーを製造
することを特徴とする請求項1乃至2記載のタイヤの製
造方法。3. An inner liner having a large thickness at any position in the width direction by winding the ribbon-shaped green rubber layer at any position in the width direction of the inner liner more than at other positions. The method for manufacturing a tire according to claim 1, wherein a liner is manufactured.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18026195A JP3745415B2 (en) | 1995-07-17 | 1995-07-17 | Tire manufacturing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18026195A JP3745415B2 (en) | 1995-07-17 | 1995-07-17 | Tire manufacturing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0929858A true JPH0929858A (en) | 1997-02-04 |
JP3745415B2 JP3745415B2 (en) | 2006-02-15 |
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JP18026195A Expired - Fee Related JP3745415B2 (en) | 1995-07-17 | 1995-07-17 | Tire manufacturing method |
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EP0854054A1 (en) * | 1996-07-03 | 1998-07-22 | The Yokohama Rubber Co., Ltd. | Pneumatic tire and method for manufacturing the same |
JP2002018973A (en) * | 2000-05-02 | 2002-01-22 | Bridgestone Corp | Method for manufacturing tire constituent member and tire |
WO2002055289A1 (en) * | 2001-01-12 | 2002-07-18 | Bridgestone Corporation | Tire construction member producing method and device therefor |
EP1358998A1 (en) * | 2001-01-31 | 2003-11-05 | Bridgestone Corporation | Tire manufacturing method |
JP2008254340A (en) * | 2007-04-05 | 2008-10-23 | Bridgestone Corp | Method and apparatus for molding inner liner |
DE112005003787T5 (en) | 2005-12-07 | 2008-11-06 | Toyo Tire & Rubber Co., Ltd. | Bead feed system for tire building process |
DE112006003656T5 (en) | 2006-01-12 | 2008-11-27 | Toyo Tire & Rubber Co., Ltd. | Method for producing a carcass band and stapling device |
DE112006003915T5 (en) | 2006-06-05 | 2009-04-23 | Toyo Tire & Rubber Co., Ltd., Osaka-shi | Method and device for winding up an elongate rubber material |
DE112006003942T5 (en) | 2006-07-10 | 2009-05-20 | Toyo Tire & Rubber Co., Ltd., Osaka-shi | Rubber strip material |
DE102008057706A1 (en) | 2007-11-19 | 2009-06-10 | Toyo Tire & Rubber Co., Ltd., Osaka-shi | Pneumatic tire and method for building a pneumatic tire |
JP2009214826A (en) * | 2008-03-12 | 2009-09-24 | Yokohama Rubber Co Ltd:The | Tire constituting member |
US20100258230A1 (en) * | 2007-11-28 | 2010-10-14 | Marco Cantu | Method for manufacturing tyres for vehicles wheels |
US7850808B2 (en) * | 2005-08-23 | 2010-12-14 | Toyo Tire & Rubber Co., Ltd. | Pneumatic tire and producing method of pneumatic tire |
US7896996B2 (en) | 2005-08-23 | 2011-03-01 | Toyo Tire & Rubber Co., Ltd. | Pneumatic tire and producing method of pneumatic tire |
US8211257B2 (en) | 2005-06-22 | 2012-07-03 | Toyo Tire & Rubber Co., Ltd. | Tire building method and rotational transfer device for drum transfer support base in tire building process |
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