JPH0459346A - Pneumatic tire and manufacture thereof - Google Patents

Pneumatic tire and manufacture thereof

Info

Publication number
JPH0459346A
JPH0459346A JP2170118A JP17011890A JPH0459346A JP H0459346 A JPH0459346 A JP H0459346A JP 2170118 A JP2170118 A JP 2170118A JP 17011890 A JP17011890 A JP 17011890A JP H0459346 A JPH0459346 A JP H0459346A
Authority
JP
Japan
Prior art keywords
tire
inner liner
liner layer
joint
release agent
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.)
Pending
Application number
JP2170118A
Other languages
Japanese (ja)
Inventor
Noboru Nagumo
登 南雲
Isamu Irie
入江 勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokohama Rubber Co Ltd
Original Assignee
Yokohama Rubber Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yokohama Rubber Co Ltd filed Critical Yokohama Rubber Co Ltd
Priority to JP2170118A priority Critical patent/JPH0459346A/en
Publication of JPH0459346A publication Critical patent/JPH0459346A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent a mold release agent from intruding into the joint part of an inner liner layer at the time of vulcanization in order to avoid its cracking by a method wherein a joint is made between the ends of the inner liner layer at the circumferential ends of a tire before vulcanization and an ultra-high- molecular polyethylene film is bonded to the inner surface of the tire at this joint for vulcanization. CONSTITUTION:A tread 4 has two belt layers 5 provided on the upper surface of a carcass layer 2 and the carcass layer 2 is mounted by being bent over e bead core 1 at each end and has an inner liner layer 3 bonded to the inside thereof. A joint is made by lapping one end of the inner liner layer 3 over the other end thereof at the circumferential ends of a tire end an ultra-high- molecular polyethylene film F is bonded to the inner surface of the tire at this lap joint. A mold release agent is then coated entirely over the inside of this inner liner layer 3, after which it is vulcanized and shared using a metal die. This method can prevent the mold release agent from intruding into the lap joint of the inner liner layer 3 at the time of its application.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はインナーライナー層のタイヤ周方向両端部の接
合部(以下、インナーライナー層の接合部と略す)にク
ラック等の欠陥の発生がなく、タイヤ周方向のユニフォ
ーミティ−を向上した空気入りタイヤおよびその製造方
法に関する。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention eliminates the occurrence of defects such as cracks at the joints of the inner liner layer at both ends in the tire circumferential direction (hereinafter referred to as the joints of the inner liner layer). , relates to a pneumatic tire with improved uniformity in the tire circumferential direction and a method for manufacturing the same.

〔従来の技術〕[Conventional technology]

一般に、空気入りタイヤがチューブレスタイヤの場合に
は非通気性のインナーライナー層が内貼りされており、
チューブ付きタイヤの場合にもチューブ保護用のインナ
ーライナー層が内貼りされている。このインナーライナ
ー層は、未加硫のインナーライナーゴムシートをタイヤ
内面に円筒状に内貼りし、そのタイヤ周方向両端部を重
ね合わせ接合するようにしている。このようなインナー
ライナーゴムシートを他の未加硫のタイヤ構成材料と組
み合わせて成形されたグリーンタイヤは、その内側から
ブラダ−の膨張圧により金型内面に押し付けられながら
加硫成形される。この場合、加硫成形後の前記ブラダ−
とインナーライナー層との離型性をよ(するため、加硫
前のインナーライナーゴムシートの内面には全面に亘っ
て離型剤を塗布している。ところが前記ブラダ−の膨張
圧によりインナーライナー層はタイヤ周方向に伸びるた
め、インナーライナー層の接合部に前記離型剤が侵入す
ることがある。この侵入した離型剤は、インナーライナ
ー層の接合部の接着を妨げて加硫成形後にクランクを発
生させ、タイヤ使用中に成長してタイヤを破壊させる危
険がある。また、チューブレスタイヤの場合は、このク
ランクが充填空気をリークさせる原因となる恐れがあっ
た。
Generally, when a pneumatic tire is a tubeless tire, a non-breathable inner liner layer is attached inside.
Even in the case of tires with tubes, an inner liner layer is applied to protect the tube. In this inner liner layer, an unvulcanized inner liner rubber sheet is pasted on the inner surface of the tire in a cylindrical shape, and both ends in the circumferential direction of the tire are overlapped and bonded. A green tire formed by combining such an inner liner rubber sheet with other unvulcanized tire constituent materials is vulcanized and molded while being pressed from the inside against the inner surface of a mold by the inflation pressure of a bladder. In this case, the bladder after vulcanization molding
In order to improve mold releasability between the inner liner layer and the inner liner layer, a release agent is applied to the entire inner surface of the inner liner rubber sheet before vulcanization.However, due to the expansion pressure of the bladder, the inner liner Since the layer extends in the circumferential direction of the tire, the above-mentioned mold release agent may invade the joints of the inner liner layer.This mold release agent may prevent adhesion of the joints of the inner liner layer and cause damage after vulcanization. There is a risk that the cracks will grow during use and destroy the tire.Furthermore, in the case of tubeless tires, there is a risk that the cranks may cause air leakage.

従来、上述したインナーライナー層の接合部への離型剤
の侵入を防止するため、離型剤を塗布する前に予め接合
部の表面に、未加硫ゴムテープを貼り合わせ、次いで前
記離型剤を塗布し、そのままの状態で加硫する方法が知
られている。
Conventionally, in order to prevent the mold release agent from entering the joint of the inner liner layer described above, an unvulcanized rubber tape is pasted on the surface of the joint before applying the mold release agent, and then the mold release agent is applied to the surface of the joint. A known method is to apply and vulcanize in that state.

しかしながら、未加硫ゴムテープを貼り付けると、加硫
成形した後のインナーライナー層の接合部の重量を局部
的に増し、タイヤ周方向における重さの均一性を低下さ
せるため、ユニフォーミティ−を低下させるという問題
があった。
However, when unvulcanized rubber tape is applied, the weight of the joint of the inner liner layer after vulcanization and molding is locally increased, reducing the uniformity of the weight in the circumferential direction of the tire, resulting in a decrease in uniformity. There was a problem with letting it happen.

また、別の方法として、インナーライナー層の接合部の
表面に低分子量のポリエチレンフィルム又は粘着テープ
(以下、低分子ポリエチレンフィルム等という)を貼り
合わせ、次いで前記離型剤を塗布し、しかる後この低分
子ポリエチレンフィルム等を剥離して加硫する方法があ
るが、この方法では、インナーライナー層の接合部にお
けるブラダ−との剥離性が阻害されるため、低分子ポリ
エチレンフィルム等を幅狭とする必要があり、この幅次
第では、剥離時または剥離した後加硫成形するまでの間
に、インナーライナー層に塗布した離型剤が接合部に侵
入することがあるためクラックの発生防止の上からは有
効な手段とはいえなかった。
In addition, as another method, a low molecular weight polyethylene film or adhesive tape (hereinafter referred to as low molecular weight polyethylene film, etc.) is bonded to the surface of the joint part of the inner liner layer, and then the release agent is applied, and then the release agent is applied. There is a method of peeling and vulcanizing a low-molecular-weight polyethylene film, etc., but with this method, the peelability with the bladder at the joint of the inner liner layer is inhibited, so the low-molecular-weight polyethylene film, etc. is made narrow. Depending on the width, the release agent applied to the inner liner layer may enter the joint during peeling or after peeling and before vulcanization molding, so it is necessary to prevent cracks from occurring. was not an effective method.

ここで、低分子ポリエチレンフィルム等を剥離する理由
は、この低分子ポリエチレンフィルム等が加硫成形時に
溶融してインナーライナー層の接合部に侵入し、剥離を
誘発する恐れがあるためである。
The reason why the low-molecular-weight polyethylene film or the like is peeled off here is that there is a risk that the low-molecular-weight polyethylene film or the like will melt during vulcanization molding and invade the joint portion of the inner liner layer, thereby inducing peeling.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

本発明は、インナーライナー層の接合部に離型剤の浸透
によるクラックの発生がなく、しかもタイヤ周方向の重
さを不均一にすることがなく、ユニフォーミティ−を向
上する空気入りタイヤ及びこのような空気入りタイヤの
製造方法を提供することを目的とする。
The present invention provides a pneumatic tire that does not cause cracks due to penetration of a mold release agent at the joints of inner liner layers, and that improves uniformity without making the weight uneven in the circumferential direction of the tire. The purpose of the present invention is to provide a method for manufacturing such a pneumatic tire.

〔課題を解決するための手段〕[Means to solve the problem]

このような本発明の目的は、タイヤ内面の未加硫のイン
ナーライナー層のタイヤ周方向の両端部を接合し、この
接合部のタイヤ内側面に超高分子量ポリエチレンからな
るフィルムを貼り合わせたグリーンタイヤを成形し、次
いで該グリーンタイヤを前記フィルムを貼り付けた状態
で加硫成形することによって達成することができる。ま
た、この製造方法により得られた空気入りタイヤは、前
記インナーライナー層の接合部ツタイヤ内側面に超高分
子量ポリエチレンフィルムを貼り合せた構成からなり、
同様に前記目的を達成することができる。
The purpose of the present invention is to create a green material by joining both circumferential ends of an unvulcanized inner liner layer on the inner surface of a tire, and pasting a film made of ultra-high molecular weight polyethylene on the inner surface of the tire at this joint. This can be achieved by molding a tire and then vulcanizing the green tire with the film attached thereto. Further, the pneumatic tire obtained by this manufacturing method has a structure in which an ultra-high molecular weight polyethylene film is bonded to the inner surface of the tire at the joint of the inner liner layer,
Similarly, the above objectives can be achieved.

超高分子量ポリエチレンからなるフィルムは、加硫温度
によって溶融することがなく、がフ加硫温度によってイ
ンナーライナー層に接着し、一体化されるため、接合部
への離型剤の侵入を防止することができる。また、ポリ
エチレン自体は非常に比重が小さいものであるから、接
合部に接着しても重量を増加させることがなく、タイヤ
のユニフォーミティ−を低下させることはない。
The film made of ultra-high molecular weight polyethylene does not melt at vulcanization temperatures, but adheres to and integrates with the inner liner layer at vulcanization temperatures, preventing mold release agents from entering the joints. be able to. Furthermore, since polyethylene itself has a very low specific gravity, even if it is adhered to the joint, the weight will not increase and the uniformity of the tire will not be reduced.

以下、図面を参照して本発明を説明する。The present invention will be described below with reference to the drawings.

第1図に示す空気入りタイヤにおいて、トレッド4には
カーカス層2の上面に2層のヘルド層5が設けられてい
る。カーカス層2は、その両端部をビードコア1の周り
に折り返されて装架され、このカーカス層2の内側にイ
ンナーライナー層3が内貼りされている。第2図に示す
ように、このインナーライナー層3は、そのタイヤ周方
向の両端部を互いに重ね合わせて接合され、この接合部
のタイヤ内側面に超高分子量ポリエチレンフィルムFを
貼り合わせている。
In the pneumatic tire shown in FIG. 1, a tread 4 is provided with two heald layers 5 on the upper surface of a carcass layer 2. The carcass layer 2 is mounted with its both ends folded back around the bead core 1, and an inner liner layer 3 is pasted inside the carcass layer 2. As shown in FIG. 2, the inner liner layer 3 is bonded by overlapping both ends thereof in the tire circumferential direction, and an ultra-high molecular weight polyethylene film F is bonded to the inner surface of the tire at this bonded portion.

本発明において、上記のような空気入りタイヤは、次の
ように力′リーンタイヤを用意することにより製造する
ことができる。すなわぢ、まず、夕・fヤ内側面に未加
硫のインナーライナー層がタイヤ周方向6.二内貼りさ
れ、そのタイヤ周方向両端部が重ね合わされて接合され
た構造のグリーンタイヤを成形する。このグリーンタイ
ヤにおけるインナーライナー層の接合部のタイヤ内側面
に超高分子量ポリエチレンからなるフィルムを貼り合わ
せ、次いでこのグリーンタイヤのインナーライナー層の
内側には全面に亘、って離型剤を塗布した後、金型を用
いて加硫成形するのである。
In the present invention, the above pneumatic tire can be manufactured by preparing a lean tire as follows. In other words, first, an unvulcanized inner liner layer is formed on the inside surface of the tire in the circumferential direction of the tire. A green tire having a structure in which two tires are bonded together, and both ends in the circumferential direction of the tire are overlapped and joined is formed. A film made of ultra-high molecular weight polyethylene was attached to the inner surface of the tire at the joint of the inner liner layer of this green tire, and then a release agent was applied to the entire inner surface of the inner liner layer of this green tire. After that, it is vulcanized and molded using a mold.

本発明で使用するポリエチレンフィルムFは超高分子蓋
であることが重要である。その分子量としては平均分子
鼠で100万以上を有することが望ましい。その上限は
、特に限定されるものではないが、合成可能な範囲で大
きければ大きいほど好ましい。このような超高分子量の
ポリエチレンフィルムでインナーライナー層の接合部を
被覆することによって、離型剤塗布時のインナーライナ
ー層の接合部への離型剤の侵入を防止することができ、
かつグリーンタイヤの加硫成形時に溶融することなくフ
ィルム状のまま接着一体化されるから、離型剤の侵入を
防止し、クラックや剥離の誘因となることを防止するこ
とができる。また、比重が低いためインナーライナー層
の接合部の重量を増加させることがないので、タイヤの
ユニフォーミティ−を向上することができる。
It is important that the polyethylene film F used in the present invention is an ultra-high polymer lid. As for its molecular weight, it is desirable to have an average molecular weight of 1,000,000 or more. The upper limit is not particularly limited, but it is preferably as large as possible within the synthesizable range. By covering the joints of the inner liner layers with such an ultra-high molecular weight polyethylene film, it is possible to prevent the release agent from entering the joints of the inner liner layers when applying the mold release agent.
In addition, since the green tire is bonded and integrated in a film form without being melted during vulcanization molding of a green tire, it is possible to prevent the release agent from entering and causing cracks and peeling. Further, since the specific gravity is low, the weight of the joint portion of the inner liner layer is not increased, so the uniformity of the tire can be improved.

これに対し、従来の低分子量のポリエチレンからなるフ
ィルムは融点が低く、グリーンタイヤの加硫成形時に溶
融し、接合部の隙間等に侵入するが、インナーライナー
ゴムに対して本質的に接着性を有していないため、クラ
ックの発生を防止できるものではない。すなわち、低分
子量のポリエチレンは、超高分子量ポリエチレンのよう
な接着性を持っておらず、どのような接着剤を使用(7
ても接着できないか或いは接着できても接着強度が極め
て低いものにしかならない。
In contrast, conventional films made of low-molecular-weight polyethylene have a low melting point, so they melt during vulcanization molding of green tires and penetrate into gaps between joints, but they essentially have no adhesive properties to the inner liner rubber. Therefore, it is not possible to prevent the occurrence of cracks. In other words, low molecular weight polyethylene does not have the same adhesive properties as ultra high molecular weight polyethylene, and what kind of adhesive is used (7
Even if it does, it will not be possible to bond, or even if it can be bonded, the bond strength will be extremely low.

また、超高分子量ポリ〕ニヂレンフィルJ、の厚さは1
μm〜11001Jであることが望ま1〜い。
In addition, the thickness of ultra-high molecular weight polynidylene film J is 1
It is desirable that it is 1 to 11001 J.

この厚さを1μm以上とするこたによりインノー−ライ
ナー層の接合部への離型剤の侵入を有効に防止すること
ができる。また、11001J以下とすることにより、
インナーライナー層の接合部の剛性を小ざくし、フ1/
キシビリティ−を確保することができる。
By setting the thickness to 1 .mu.m or more, it is possible to effectively prevent the release agent from entering the joint between the inner and liner layers. In addition, by setting it to 11001J or less,
By reducing the rigidity of the joints of the inner liner layer,
flexibility can be ensured.

また、超高分子量ポリエチレンフィルムの中ばインナー
ライナー層の接合部への離型剤の侵入防止効果を考慮(
−2、通常、10〜2511II11の巾にするのがよ
い。
In addition, we considered the effect of preventing the release agent from entering the joint of the middle inner liner layer of the ultra-high molecular weight polyethylene film (
-2, usually a width of 10 to 2511II11.

このようにインナーライナー層の接合部を完全に覆うよ
うに、そのタイヤ内側面に超高分子量ポリエチレンフィ
ルムを貼り合わせ、さらに離型剤をインナーライナー層
の全面に塗布したグリーンタイヤは、常法に従って金型
を用いて加硫成形される。
In this way, a green tire is produced by pasting an ultra-high molecular weight polyethylene film on the inner surface of the tire so as to completely cover the joint of the inner liner layer, and then applying a mold release agent to the entire surface of the inner liner layer using a conventional method. It is vulcanized and molded using a mold.

〔実施例〕〔Example〕

次の本発明方法と従来の方法に従って、次の3種類の空
気入りタイヤを製作した。
The following three types of pneumatic tires were manufactured according to the following method of the present invention and a conventional method.

本発明方法: 未加硫のインナーライナー層のタイヤ周方向両端部を重
ね合わせ接合し、この接合部のタイヤ内側面に、幅20
mm 、厚さ50μmの平均分子量300万の超高分子
量ポリエチレンフィルムを貼り伺け、このインナーライ
ナー層の全面に離型剤を塗布したグリーンタイヤを成形
し、次いで常法に従い金型を用いて前記フィルムを貼り
付けたままグリーンタイヤを加硫成形した。
Method of the present invention: Both ends of the unvulcanized inner liner layer in the tire circumferential direction are overlapped and joined, and a width of 20
An ultra-high molecular weight polyethylene film with an average molecular weight of 3,000,000 mm and a thickness of 50 μm was applied, and a green tire was molded by coating the entire surface of this inner liner layer with a mold release agent. A green tire was vulcanized and molded with the film attached.

従来方法I: 本発明方法において、超高分子量ポリエチレンフィルム
の代わりに、幅20mm 、厚さ5Q/jmの平均分子
量5万の低分子量ポリエチレンフィルムを、インナーラ
イナー層の接合部のタイヤ内側面に貼り付け、前記離型
剤を塗4jしまた後、前記フィルムを剥離したグリーン
タイヤを成形12、次いで同様に常法に従い、前記グリ
ーンタイヤを加硫成形した。
Conventional method I: In the method of the present invention, instead of the ultra-high molecular weight polyethylene film, a low molecular weight polyethylene film having a width of 20 mm, a thickness of 5 Q/jm, and an average molecular weight of 50,000 is attached to the inner surface of the tire at the joint of the inner liner layer. After applying the mold release agent 4j, the green tire from which the film was peeled off was molded (12), and then the green tire was vulcanized and molded in the same manner as usual.

従来方法■: 本発明方法において、超高分子量ポリエチレンフィルム
の代わりに、幅20mm、厚さ0 、7mmのゴムテー
プを、インナーライナー層の接合部のタイヤ内側面に貼
り付けた後離型剤を塗布したグリーンタイヤを成形し、
次いで同様に常法に従い前記ゴムテープを貼り付けたま
まグリーンタイヤを加硫成形した。
Conventional method ■: In the method of the present invention, instead of the ultra-high molecular weight polyethylene film, a rubber tape with a width of 20 mm and a thickness of 0.7 mm is attached to the inner surface of the tire at the joint of the inner liner layer, and then a release agent is applied. molded green tires,
Next, a green tire was vulcanized and molded using the same conventional method with the rubber tape still attached.

これらのタイヤのサイズは、いずれも同一のP145/
80R12とした。
The size of these tires is the same P145/
It was set to 80R12.

これらのタイヤについて、下記のユニフォーミティ−評
価及び耐クランク性評価を行った。
These tires were subjected to the following uniformity evaluation and crank resistance evaluation.

ユニフォーミーイー″ 2 自動車規格JASOC607に準拠してし、F、V、を
測定し、評価した。
UNIFORM E''2 F and V were measured and evaluated in accordance with the automobile standard JASOC607.

12旦1L−二 室内ドラム試験により、空気圧1.2Kg/cm”、荷
重440Kgの下で、時速81に+mにて100時間走
行させ、走行後のタイヤのインナーライナー層の接合部
におけるクランクの発生を調べた。
In a 1L-2 room drum test, the tire was run for 100 hours at a speed of 81 + m under an air pressure of 1.2Kg/cm'' and a load of 440Kg, and the occurrence of a crank at the joint of the inner liner layer of the tire after running. I looked into it.

その結果、ユニフォーミティ−については、本発明のタ
イヤと従来方法工のタイヤは、実質的に差異のない良好
な水準であるのに対し、従来方法■のタイヤは著しく劣
っていた。他方、耐クラツク性については、本発明のタ
イヤと従来方法■のタイヤはいずれもクランクの発生が
全く認められなかったのに対し、従来方法■のタイヤに
は多数のクラックが発生していた。
As a result, in terms of uniformity, the tire of the present invention and the tire manufactured using the conventional method were at a good level with virtually no difference, whereas the tire manufactured using the conventional method (2) was significantly inferior. On the other hand, with regard to crack resistance, no cracks were observed in both the tires of the present invention and the tires produced using conventional method (2), whereas the tires produced using conventional method (2) had numerous cracks.

〔発明の効果〕〔Effect of the invention〕

上述したように、本発明の空気入りタイヤは、加硫前の
インナーライナー層のタイヤ周方向両端部を接合し、こ
の接合部のタイヤ内側面に超高分子量ポリエチレンフィ
ルムを貼り付けて加硫成形したから、グリーンタイヤの
加硫成形時にインナーライナー層の接合部に離型剤が侵
入するのを防止し、クランクが発生するのを防止するこ
とができる。また、前記加硫成形により超高分子量ポリ
エチレンフィルムは接合部に接着一体化するが、その比
重が小さいので接合部の重量を重くすることがないため
、タイヤ周方向のユニフォーミティ−が低下することが
ない。
As described above, in the pneumatic tire of the present invention, both ends of the inner liner layer before vulcanization in the tire circumferential direction are joined together, and an ultra-high molecular weight polyethylene film is attached to the inner surface of the tire at this joined part, and vulcanization molding is performed. Therefore, it is possible to prevent the release agent from entering the joint portion of the inner liner layer during vulcanization molding of a green tire, thereby preventing the occurrence of cranking. In addition, the ultra-high molecular weight polyethylene film is adhesively integrated into the joint by the vulcanization process, but its specific gravity is small, so it does not increase the weight of the joint, which reduces uniformity in the tire circumferential direction. There is no.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明タイヤの1例を示す半断面図、第2図は
インナーライナー層の接合部を示す説明図である。 2・・・カーカス層、3・・・インナーライナー層、F
・・・超高分子量ポリエチレンフィルム。 第1図
FIG. 1 is a half-sectional view showing an example of the tire of the present invention, and FIG. 2 is an explanatory view showing a joint between inner liner layers. 2... Carcass layer, 3... Inner liner layer, F
...Ultra high molecular weight polyethylene film. Figure 1

Claims (2)

【特許請求の範囲】[Claims] (1)インナーライナー層のタイヤ周方向両端部の接合
部のタイヤ内側面に超高分子量ポリエチレンからなるフ
ィルムを貼り合わせた空気入りタイヤ。
(1) A pneumatic tire in which a film made of ultra-high molecular weight polyethylene is bonded to the inner surface of the tire at the joints of both ends of the inner liner layer in the circumferential direction of the tire.
(2)タイヤ内面において、未加硫のインナーライナー
層のタイヤ周方向の両端部を接合し、この接合部のタイ
ヤ内に面に、超高分子量ポリエチレンからなるフィルム
を貼り合わせたグリーンタイヤを成形し、次いで該グリ
ーンタイヤを前記フィルムを貼り付けた状態で加硫成形
する空気入りタイヤの製造方法。
(2) On the inner surface of the tire, both ends of the unvulcanized inner liner layer in the tire circumferential direction are joined, and a film made of ultra-high molecular weight polyethylene is bonded to the inside of the tire at this joint to form a green tire. and then vulcanization molding the green tire with the film attached thereto.
JP2170118A 1990-06-29 1990-06-29 Pneumatic tire and manufacture thereof Pending JPH0459346A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2170118A JPH0459346A (en) 1990-06-29 1990-06-29 Pneumatic tire and manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2170118A JPH0459346A (en) 1990-06-29 1990-06-29 Pneumatic tire and manufacture thereof

Publications (1)

Publication Number Publication Date
JPH0459346A true JPH0459346A (en) 1992-02-26

Family

ID=15898976

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2170118A Pending JPH0459346A (en) 1990-06-29 1990-06-29 Pneumatic tire and manufacture thereof

Country Status (1)

Country Link
JP (1) JPH0459346A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009241855A (en) * 2008-03-31 2009-10-22 Yokohama Rubber Co Ltd:The Pneumatic tire
JP2016101753A (en) * 2015-11-02 2016-06-02 横浜ゴム株式会社 Manufacturing method of pneumatic tire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009241855A (en) * 2008-03-31 2009-10-22 Yokohama Rubber Co Ltd:The Pneumatic tire
JP2016101753A (en) * 2015-11-02 2016-06-02 横浜ゴム株式会社 Manufacturing method of pneumatic tire

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