JP2008213414A - Pneumatic tire, rim, and method for producing them - Google Patents
Pneumatic tire, rim, and method for producing them Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 47
- 239000000463 material Substances 0.000 claims abstract description 71
- 239000007788 liquid Substances 0.000 claims abstract description 68
- 229920001971 elastomer Polymers 0.000 claims abstract description 64
- 239000005060 rubber Substances 0.000 claims abstract description 64
- 150000001875 compounds Chemical class 0.000 claims abstract description 52
- 238000000034 method Methods 0.000 claims abstract description 46
- 150000001451 organic peroxides Chemical class 0.000 claims abstract description 22
- 230000002093 peripheral effect Effects 0.000 claims abstract description 18
- 238000005187 foaming Methods 0.000 claims description 11
- 238000007664 blowing Methods 0.000 claims description 10
- 241000628997 Flos Species 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 7
- 238000007607 die coating method Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 description 11
- 239000003795 chemical substances by application Substances 0.000 description 10
- 239000004088 foaming agent Substances 0.000 description 10
- 239000011324 bead Substances 0.000 description 7
- 238000013329 compounding Methods 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 229920001195 polyisoprene Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- WFUGQJXVXHBTEM-UHFFFAOYSA-N 2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane Chemical compound CCC(C)(OO)OOC(C)(CC)OO WFUGQJXVXHBTEM-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- GEMHFKXPOCTAIP-UHFFFAOYSA-N n,n-dimethyl-n'-phenylcarbamimidoyl chloride Chemical compound CN(C)C(Cl)=NC1=CC=CC=C1 GEMHFKXPOCTAIP-UHFFFAOYSA-N 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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Abstract
Description
本発明は、空気入りタイヤ及びリム、並びにそれらの製造方法に関し、特にロードノイズを低減することが可能なタイヤとリムとの組立体に用いられる空気入りタイヤ及び／又はリムを低コストで製造するための方法に関するものである。 The present invention relates to a pneumatic tire and a rim, and a manufacturing method thereof, and more particularly, to manufacture a pneumatic tire and / or a rim used for an assembly of a tire and a rim capable of reducing road noise at low cost. For the method.
一般に、リム組みされた空気入りタイヤは、自動車の走行中にタイヤの内部形状に起因する空洞共鳴現象を起こすため、走行中の自動車の車室内には、所謂ロードノイズという不快音が発生する。上記空洞共鳴の周波数は、180〜300Hzの範囲にあり、車軸に伝達される際は、それ以外の帯域と異なり、鋭いピークとなって、不快な車室内騒音の一因となっている。 In general, a rim-assembled pneumatic tire causes a cavity resonance phenomenon due to the internal shape of the tire during traveling of the automobile, so that an unpleasant noise called road noise is generated in the interior of the traveling automobile. The frequency of the cavity resonance is in the range of 180 to 300 Hz, and when transmitted to the axle, unlike other bands, it has a sharp peak and contributes to unpleasant vehicle interior noise.
この問題に対して、特開平１−１１５７０１号公報（特許文献１）には、特殊な構造のリムホイールを使用することで、空洞共鳴現象を抑制する技術が開示されている。しかしながら、特開平１−１１５７０１号公報に開示のリムホイールは、タイヤ内腔に連通する空洞部を有する複雑な構造であり、製造が難しく、タイヤとリムとの組立体としては、コスト高とならざるを得ない。 To solve this problem, Japanese Patent Application Laid-Open No. 1-115701 (Patent Document 1) discloses a technique for suppressing the cavity resonance phenomenon by using a rim wheel having a special structure. However, the rim wheel disclosed in Japanese Patent Application Laid-Open No. 1-115701 has a complicated structure having a hollow portion that communicates with the tire lumen, is difficult to manufacture, and the tire and rim assembly is expensive. I must.
一方、特許第３６２２９５７号公報（特許文献２）には、リム組み性を損ねることなく、走行中のロードノイズを低減できるタイヤとリムとの組立体として、タイヤとリムとがなすタイヤ内腔に非リング状の帯状シートが固定されているタイヤとリムとの組立体が開示されている。 On the other hand, in Japanese Patent No. 3622957 (Patent Document 2), a tire and rim assembly that can reduce road noise during traveling without impairing rim assembly performance is provided in the tire lumen formed by the tire and the rim. An assembly of a tire and a rim to which a non-ring belt-like sheet is fixed is disclosed.
しかしながら、本発明者が検討したところ、特許第３６２２９５７号公報に開示のタイヤとリムとの組立体を製造するには、予め帯状シートを作製し、該帯状シートをタイヤ内腔に固定する必要があり、具体的には、帯状シート用原料の調製工程、帯状シートの成形工程、成形体の才断及びトリミング工程、帯状シートの貼付工程等、多数の工程を経るため、製造工程が複雑で、工程の連続化及び自動化が困難となり、製造コストが高くならざるを得ないことが分かった。また、人手による貼付では、帯状シートの貼付位置の精度が低いという問題もあった。 However, as a result of studies by the present inventors, in order to manufacture the tire and rim assembly disclosed in Japanese Patent No. 3622957, it is necessary to prepare a belt-like sheet in advance and fix the belt-like sheet to the tire lumen. Yes, specifically, the manufacturing process is complicated because it goes through a number of processes such as the preparation process of the raw material for the belt-like sheet, the molding process of the belt-like sheet, the wiping and trimming process of the molded body, the sticking process of the belt-like sheet, It turned out that the continuation and automation of the process became difficult, and the production cost was inevitably high. In addition, there has been a problem that the accuracy of the position of the belt-like sheet is low in manual application.
そこで、本発明の目的は、上記従来技術の問題を解決し、ロードノイズを低減することが可能なタイヤとリムとの組立体に用いられる空気入りタイヤ及び／又はリムを低コストで製造することが可能な方法を提供することにある。 Accordingly, an object of the present invention is to solve the above-described problems of the prior art and to manufacture a pneumatic tire and / or rim used for a tire and rim assembly capable of reducing road noise at a low cost. Is to provide a possible way.
本発明者は、上記目的を達成するために鋭意検討した結果、内面の少なくとも一部にスポンジ材が配置された空気入りタイヤ及び／又はタイヤ内腔側面の少なくとも一部にスポンジ材が配置されたリムの製造において、空気入りタイヤの内面の少なくとも一部及び／又はリムの外周面の少なくとも一部に、有機過酸化物を含有する液状ゴム配合物を塗布及び硬化させて、スポンジ材を形成することで、ロードノイズを低減することが可能なタイヤとリムとの組立体に用いられる空気入りタイヤ及び／又はリムを低コストで製造できることを見出し、本発明を完成させるに至った。 As a result of intensive studies to achieve the above-mentioned object, the present inventor has found that a sponge material is disposed on at least a part of a pneumatic tire in which a sponge material is disposed on at least a part of the inner surface and / or a side surface of the tire lumen. In manufacturing a rim, a sponge material is formed by applying and curing a liquid rubber compound containing an organic peroxide on at least a part of the inner surface of the pneumatic tire and / or at least a part of the outer peripheral surface of the rim. Thus, it has been found that a pneumatic tire and / or a rim used in an assembly of a tire and a rim capable of reducing road noise can be manufactured at a low cost, and the present invention has been completed.
即ち、本発明の空気入りタイヤの製造方法は、内面の少なくとも一部にスポンジ材が配置された空気入りタイヤの製造方法であって、
空気入りタイヤを準備する工程と、
（１）前記空気入りタイヤの内面の少なくとも一部に、有機過酸化物を含有する液状ゴム配合物を塗布する工程、及び、室温で又は温風を吹き付けて、前記液状ゴム配合物を発泡及び硬化させてスポンジ材を形成する工程、或いは、
（２）前記空気入りタイヤの内面の少なくとも一部に、有機過酸化物を含有する液状ゴム配合物をメカニカルフロス法により気泡を巻き込んだ状態で塗布する工程、及び、室温で又は温風を吹き付けて、前記液状ゴム配合物を硬化させてスポンジ材を形成する工程
を含むことを特徴とし、本発明の空気入りタイヤは、かかる方法で製造されたことを特徴とする。
That is, the method for producing a pneumatic tire of the present invention is a method for producing a pneumatic tire in which a sponge material is disposed on at least a part of an inner surface,
Preparing a pneumatic tire;
(1) A step of applying a liquid rubber composition containing an organic peroxide to at least a part of the inner surface of the pneumatic tire, and blowing the liquid rubber composition at room temperature or by blowing warm air; A step of forming a sponge material by curing, or
(2) A step of applying a liquid rubber compound containing an organic peroxide to at least a part of the inner surface of the pneumatic tire in a state in which bubbles are involved by a mechanical floss method, and spraying hot air at room temperature or The method further comprises the step of curing the liquid rubber compound to form a sponge material, and the pneumatic tire of the present invention is manufactured by such a method.
また、本発明のリムの製造方法は、タイヤ内腔側面の少なくとも一部にスポンジ材が配置されたリムの製造方法であって、
リムを準備する工程と、
（１）前記リムの外周面の少なくとも一部に、有機過酸化物を含有する液状ゴム配合物を塗布する工程、及び、室温で又は温風を吹き付けて、前記液状ゴム配合物を発泡及び硬化させてスポンジ材を形成する工程、或いは、
（２）前記リムの外周面の少なくとも一部に、有機過酸化物を含有する液状ゴム配合物をメカニカルフロス法により気泡を巻き込んだ状態で塗布する工程、及び、室温で又は温風を吹き付けて、前記液状ゴム配合物を硬化させてスポンジ材を形成する工程
を含むことを特徴とし、本発明のリムは、かかる方法で製造されたことを特徴とする。
The rim manufacturing method of the present invention is a rim manufacturing method in which a sponge material is disposed on at least a part of a side surface of a tire lumen,
Preparing the rim; and
(1) A step of applying a liquid rubber compound containing an organic peroxide to at least a part of the outer peripheral surface of the rim, and blowing and curing the liquid rubber compound at room temperature or by blowing warm air Process to form a sponge material, or
(2) Applying a liquid rubber compound containing an organic peroxide to at least a part of the outer peripheral surface of the rim in a state in which bubbles are involved by a mechanical floss method, and spraying hot air at room temperature or The liquid rubber compound is cured to form a sponge material, and the rim of the present invention is manufactured by such a method.
本発明の空気入りタイヤ及び／又はリムの製造方法の好適例においては、スプレー法、ダイコート法又は刷毛塗り法により、前記液状ゴム配合物を塗布する。 In a preferred example of the method for producing a pneumatic tire and / or rim of the present invention, the liquid rubber compound is applied by a spray method, a die coating method or a brush coating method.
本発明によれば、内面の少なくとも一部にスポンジ材が配置された空気入りタイヤ及び／又はタイヤ内腔側面の少なくとも一部にスポンジ材が配置されたリムを製造するにあたって、空気入りタイヤの内面の少なくとも一部及び／又はリムの外周面の少なくとも一部に、（１）有機過酸化物を含有する液状ゴム配合物を塗布及び発泡、硬化させて、或いは、（２）有機過酸化物を含有する液状ゴム配合物をメカニカルフロス法により気泡を巻き込んだ状態で塗布及び硬化させて、スポンジ材を形成することで、成形工程、才断工程、貼付工程を一工程に集約して、ロードノイズを低減することが可能なタイヤとリムとの組立体に用いられる空気入りタイヤ及び／又はリムを低コストで製造することができる。 According to the present invention, when manufacturing a pneumatic tire in which a sponge material is disposed on at least a part of the inner surface and / or a rim in which the sponge material is disposed on at least a part of a side surface of the tire lumen, the inner surface of the pneumatic tire is produced. (1) A liquid rubber compound containing an organic peroxide is applied and foamed and cured on at least a part of the outer peripheral surface of the rim and / or the rim. By applying and curing the contained liquid rubber compound with bubbles in the mechanical floss method to form a sponge material, the molding process, defeating process, and pasting process are consolidated into a single process, resulting in road noise. The pneumatic tire and / or rim used in the tire and rim assembly capable of reducing the above can be manufactured at low cost.
以下に、図を参照しながら、本発明の空気入りタイヤの製造方法及びリムの製造方法を詳細に説明する。図１は、本発明の方法に従って製造される空気入りタイヤ及びリムを用いたタイヤとリムとの組立体の一例の断面図である。図１に示す組立体は、空気入りタイヤ１と、該空気入りタイヤ１に組み付けられたリム２と、空気入りタイヤ１の内面の少なくとも一部に配置されたスポンジ材４とを具える。なお、図１に示す組立体は、空気入りタイヤ１の内面の少なくとも一部にスポンジ材４を具えるが、本発明のリムの製造方法に従って製造したリム２を用いた組立体は、リム２のタイヤ内腔３側の面の少なくとも一部にスポンジ材４を具え、空気入りタイヤ１の内面にスポンジ材４を具えなくてもよい。 Hereinafter, a method for manufacturing a pneumatic tire and a method for manufacturing a rim according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view of an example of a tire and rim assembly using a pneumatic tire and a rim manufactured according to the method of the present invention. The assembly shown in FIG. 1 includes a pneumatic tire 1, a rim 2 assembled to the pneumatic tire 1, and a sponge material 4 disposed on at least a part of the inner surface of the pneumatic tire 1. The assembly shown in FIG. 1 includes the sponge material 4 on at least a part of the inner surface of the pneumatic tire 1. However, the assembly using the rim 2 manufactured according to the rim manufacturing method of the present invention includes the rim 2. The sponge material 4 may be provided on at least a part of the surface on the tire lumen 3 side, and the sponge material 4 may not be provided on the inner surface of the pneumatic tire 1.
本発明の空気入りタイヤ又はリムの製造方法では、まず、空気入りタイヤ１又はリム２を準備する。ここで、本発明の空気入りタイヤの製造方法において準備する空気入りタイヤ１は特に限定されず、例えば、図１に示す構造の空気入りタイヤ１を使用することができる。図１に示す空気入りタイヤ１は、一対のビード部５及び一対のサイドウォール部６と、両サイドウォール部６に連なるトレッド部７とを有し、前記一対のビード部５間にトロイド状に延在してこれら各部５，６，７を補強するカーカス８と、該カーカス８のクラウン部のタイヤ半径方向外側に位置するベルト９とを具える。なお、図示例のカーカス８は、一層のカーカスプライからなり、また、上記ビード部５内に夫々埋設した一対のビードコア１０間にトロイド状に延在する本体部と、各ビードコア１０の周りでタイヤ幅方向の内側から外側に向けて半径方向外方に巻上げた折り返し部とからなるが、本発明に従って製造される空気入りタイヤのカーカスのプライ数及び構造は、特に限定されない。また、図示例のベルト９は、二枚のベルト層からなるが、本発明に従って製造される空気入りタイヤのベルトを構成するベルト層の枚数は、特に限定されない。更に、本発明に従って製造される空気入りタイヤは、ベルト補強層や、リムガード等の公知のタイヤ部材を必要に応じて更に具えることができる。
In the method for manufacturing a pneumatic tire or rim of the present invention, first, a pneumatic tire 1 or rim 2 is prepared. Here, the pneumatic tire 1 prepared in the manufacturing method of the pneumatic tire of this invention is not specifically limited, For example, the pneumatic tire 1 of the structure shown in FIG. 1 can be used. A pneumatic tire 1 shown in FIG. 1 has a pair of bead portions 5 and a pair of sidewall portions 6, and a tread portion 7 connected to both sidewall portions 6, and has a toroidal shape between the pair of bead portions 5. A carcass 8 that extends to reinforce each of these parts 5, 6, and 7, and a
一方、本発明のリムの製造方法において準備するリム２は、空気入りタイヤ１に応じて規格により定められ、該規格としては、JATMA YEAR BOOK (2000)、ETRTO STANDARD MANUAL 2000、TRA (THE TIRE and RIM ASSOCIATION INC.) 2000 YEAR BOOK等が挙げられ、JATMA YEAR BOOKで代表すれば、一般情報に記載された適用リムである。 On the other hand, the rim 2 prepared in the manufacturing method of the rim of the present invention is determined by a standard according to the pneumatic tire 1, and includes the JATMA YEAR BOOK (2000), ETRTO STANDARD MANUAL 2000, TRA (THE TIRE and RIM ASSOCIATION INC.) 2000 YEAR BOOK etc. are listed, and if it is represented by JATMA YEAR BOOK, it is an applicable rim described in general information.
次に、本発明の空気入りタイヤ又はリムの製造方法では、空気入りタイヤ１の内面の少なくとも一部又はリム２の外周面の少なくとも一部に、（１）有機過酸化物を含有する液状ゴム配合物を塗布及び発泡、硬化させて、或いは、（２）有機過酸化物を含有する液状ゴム配合物をメカニカルフロス法により気泡を巻き込んだ状態で塗布及び硬化させて、スポンジ材４を形成する。スポンジ材４を空気入りタイヤ１の内面に形成することで、組立体の遮音性及び吸音性を向上させることができ、スポンジ材４をリム２の外周面（タイヤ内腔３側の面）に形成することで、組立体の吸音性を向上させることができる。 Next, in the method for producing a pneumatic tire or rim of the present invention, (1) a liquid rubber containing an organic peroxide on at least a part of the inner surface of the pneumatic tire 1 or at least a part of the outer peripheral surface of the rim 2. Sponge material 4 is formed by applying, foaming, and curing the compound, or (2) applying and curing a liquid rubber compound containing an organic peroxide in a state in which bubbles are involved by mechanical flossing. . By forming the sponge material 4 on the inner surface of the pneumatic tire 1, the sound insulation and sound absorption of the assembly can be improved, and the sponge material 4 is applied to the outer peripheral surface of the rim 2 (the surface on the tire lumen 3 side). By forming, the sound absorption of the assembly can be improved.
上記スポンジ材４の厚さは、優れた吸音効果を発揮させつつ、スポンジ材４の割れ、ちぎれ、剥離等を未然に防止する観点から、0.5〜50mmの範囲が好ましい。スポンジ材４の厚さが0.5mm未満では、吸音効果が不足ぎみとなり、一方、50mmを超えると、質量の増加に起因して、高速回転時の遠心力による変形が大きくなって、剥離等の発生のおそれが高くなる。また、タイヤとリムとの組み立て性の観点から、上記スポンジ材４の厚さは、1〜45mmの範囲が更に好ましい。 The thickness of the sponge material 4 is preferably in the range of 0.5 to 50 mm from the viewpoint of preventing cracking, tearing, peeling, etc. of the sponge material 4 while exhibiting an excellent sound absorbing effect. If the thickness of the sponge material 4 is less than 0.5 mm, the sound absorption effect is insufficient. On the other hand, if the thickness exceeds 50 mm, deformation due to centrifugal force during high-speed rotation increases due to an increase in mass, and peeling The risk of occurrence increases. Further, from the viewpoint of assembling property between the tire and the rim, the thickness of the sponge material 4 is more preferably in the range of 1 to 45 mm.
また、タイヤの耐久性を損なうことなく、優れた吸音効果を発揮させる観点から、タイヤ赤道面を中心としてトレッド接地幅の30〜100％に相当する幅で、上記スポンジ材４を配設することが好ましい。スポンジ材４の配設幅がトレッド接地幅の30％未満では、十分な吸音効果を発揮させることが難しく、一方、100％を超えると、ベルト端部分の歪の発生に起因して発生した熱の放熱が妨げられ、タイヤの耐久性が低下するおそれがある。 Further, from the viewpoint of exerting an excellent sound absorbing effect without impairing the durability of the tire, the sponge material 4 is disposed with a width corresponding to 30 to 100% of the tread contact width centering on the tire equator plane. Is preferred. If the width of the sponge material 4 is less than 30% of the tread ground contact width, it is difficult to achieve a sufficient sound absorption effect. On the other hand, if it exceeds 100%, the heat generated due to the distortion of the belt end portion. There is a risk that the heat dissipation of the tire will be hindered and the durability of the tire will be reduced.
ここで、上記液状ゴム配合物をタイヤの内腔面に塗布する方法としては、スプレー法、ダイコート法、刷毛塗り法等が挙げられ、また、液状ゴム配合物をリムの内腔側面に塗布する方法としては、スプレー法、ダイコート法、刷毛塗り法、ロールコーター法等が挙げられる。なお、リムの外周面に液状ゴム配合物を塗布する場合は、リム２の空気入りタイヤ１と接触する部分には、液状ゴム配合物を塗布しない。リム２の空気入りタイヤ１と接触する部分に液状ゴム配合物を塗布した場合、組立体の内圧保持性が低下してしまう。 Here, examples of the method for applying the liquid rubber compound to the luminal surface of the tire include a spray method, a die coating method, a brush coating method, and the like, and the liquid rubber compound is applied to the luminal side surface of the rim. Examples of the method include a spray method, a die coating method, a brush coating method, and a roll coater method. In addition, when apply | coating a liquid rubber compound to the outer peripheral surface of a rim | limb, a liquid rubber compound is not apply | coated to the part which contacts the pneumatic tire 1 of the rim | limb 2. FIG. When the liquid rubber compound is applied to the portion of the rim 2 that contacts the pneumatic tire 1, the internal pressure retention of the assembly is degraded.
また、上記液状ゴム配合物は、スプレー法で塗布する場合は、粘度が10〜1000mPa・sの範囲にあることが好ましい。該粘度が10mPa・s未満では、塗布した液状ゴム配合物が硬化前に流れ、所望の箇所にスポンジ材を形成することが難しくなり、一方、1000mPa・sを超えると、スプレー作業性が悪化する。また、ダイコート法、刷毛塗り法等のその他の方法で塗布する場合は、液状ゴム配合物は、粘度が10〜50000mPa・sの範囲にあることが好ましい。該粘度が10mPa・s未満では、塗布した液状ゴム配合物が硬化前に流れ、所望の箇所にスポンジ材を形成することが難しくなり、一方、50000mPa・sを超えると、塗布作業性が悪化する。 Moreover, when the said liquid rubber compound is apply | coated by the spray method, it is preferable that a viscosity exists in the range of 10-1000 mPa * s. If the viscosity is less than 10 mPa · s, the applied liquid rubber compound flows before curing, and it becomes difficult to form a sponge material at a desired location. On the other hand, if it exceeds 1000 mPa · s, the spray workability deteriorates. . Moreover, when apply | coating by other methods, such as a die-coating method and a brush coating method, it is preferable that a liquid rubber compound has a viscosity in the range of 10-50000 mPa * s. When the viscosity is less than 10 mPa · s, the applied liquid rubber compound flows before curing, and it becomes difficult to form a sponge material at a desired location. On the other hand, when the viscosity exceeds 50000 mPa · s, the coating workability deteriorates. .
上記スポンジ材４は、遮音性の観点から、図１のように、空気入りタイヤ１のトレッド部７の内面の少なくとも一部に形成されることが好ましい。空気入りタイヤ１のトレッド部７の内面の少なくとも一部にスポンジ材４が形成されている場合、路面から伝わるロードノイズを遮音して、組立体の空洞共鳴を効果的に抑制し、ロードノイズを大幅に低減することができる。 From the viewpoint of sound insulation, the sponge material 4 is preferably formed on at least a part of the inner surface of the tread portion 7 of the pneumatic tire 1 as shown in FIG. When the sponge material 4 is formed on at least a part of the inner surface of the tread portion 7 of the pneumatic tire 1, the road noise transmitted from the road surface is sound-insulated to effectively suppress the cavity resonance of the assembly and reduce the road noise. It can be greatly reduced.
上記スポンジ材４は、多孔性の構造体であり、そのセル（孔）は、連通孔であっても、独立気泡であってもよいが、連通孔であることが好ましい。スポンジ材のセルが連通孔である場合、吸音性と遮音性が向上し、一方、スポンジ材のセルが独立気泡である場合、遮音性が向上する。なお、スポンジ材のセルを形成するメンブレンが振動することで、音（ロードノイズ）のエネルギーが熱に変換され、ロードノイズが小さくなる。 The sponge material 4 is a porous structure, and the cell (hole) may be a communication hole or a closed cell, but is preferably a communication hole. When the sponge material cell is a communicating hole, the sound absorption and sound insulation properties are improved. On the other hand, when the sponge material cell is a closed cell, the sound insulation property is improved. In addition, when the membrane forming the sponge material cell vibrates, the energy of sound (road noise) is converted into heat, and the road noise is reduced.
本発明の空気入りタイヤ又はリムの製造方法では、（１）スポンジ材の原料組成物として、有機過酸化物を含有する液状ゴム配合物を、空気入りタイヤ１の内面の少なくとも一部又はリム２の外周面の少なくとも一部に塗布した後、室温で又は温風を吹き付けて、該液状ゴム配合物を発泡及び硬化させて、或いは、（２）スポンジ材の原料組成物として、有機過酸化物を含有する液状ゴム配合物を、メカニカルフロス法により気泡を巻き込んだ状態で、空気入りタイヤ１の内面の少なくとも一部又はリム２の外周面の少なくとも一部に塗布した後、室温で又は温風を吹き付けて、該液状ゴム配合物を硬化させて、スポンジ材４を形成する。 In the method for producing a pneumatic tire or rim of the present invention, (1) a liquid rubber compound containing an organic peroxide is used as the raw material composition of the sponge material, at least a part of the inner surface of the pneumatic tire 1 or the rim 2. After applying to at least a part of the outer peripheral surface of the liquid, the liquid rubber compound is foamed and cured at room temperature or by blowing warm air, or (2) an organic peroxide as a raw material composition of a sponge material Is applied to at least a part of the inner surface of the pneumatic tire 1 or at least a part of the outer peripheral surface of the rim 2 in a state in which bubbles are entrained by a mechanical floss method, and then at room temperature or warm air To form a sponge material 4 by curing the liquid rubber compound.
上記（１）の場合は、予め液状ゴム配合物に添加しておいた発泡剤が分解して、気泡が形成され、該気泡が、硬化後のスポンジ材４のセル（孔）となる。また、上記（２）の場合は、上記液状ゴム配合物がメカニカルフロス法により気泡を巻き込んでおり、該気泡が、硬化後のスポンジ材４のセル（孔）となるため、液状ゴム配合物への発泡剤の配合を要しない。 In the case of (1) above, the foaming agent previously added to the liquid rubber compound is decomposed to form bubbles, which become cells (pores) of the sponge material 4 after curing. In the case of the above (2), the liquid rubber compound entrains bubbles by the mechanical floss method, and the bubbles become cells (pores) of the sponge material 4 after curing. No blending of foaming agent is required.
上記液状ゴム配合物は、液状ゴムと各種配合剤を含み、液状ゴムとしては、液状ポリブタジエンゴム、液状ポリイソプレンゴム、液状水添ポリブタジエンゴム、液状水添ポリイソプレンゴム等が挙げられる。なお、上記液状ゴムは、室温（25℃）において液状である。また、上記（１）の場合、配合剤としては、公知の硬化剤、該硬化剤の分解促進剤、発泡剤及び発泡助剤等が挙げられ、上記（２）の場合は、発泡剤の配合を要しないため、配合剤としては、公知の硬化剤及びその分解促進剤等が挙げられ、これら配合剤としては、市販品を使用することができる。 The liquid rubber compound includes a liquid rubber and various compounding agents, and examples of the liquid rubber include liquid polybutadiene rubber, liquid polyisoprene rubber, liquid hydrogenated polybutadiene rubber, and liquid hydrogenated polyisoprene rubber. The liquid rubber is liquid at room temperature (25 ° C.). In the case of (1), examples of the compounding agent include a known curing agent, a decomposition accelerator for the curing agent, a foaming agent, and a foaming aid. In the case of (2), the compounding of the foaming agent is included. Therefore, as a compounding agent, a well-known hardening | curing agent, its decomposition accelerator, etc. are mentioned, A commercial item can be used as these compounding agents.
なお、上記（１）の場合において、発泡剤としては、炭酸水素ナトリウム等が挙げられ、また、該発泡剤の配合量は、特に限定されるものではないが、上記液状ゴム100質量部に対して0.1〜5質量部の範囲が好ましい。発泡剤の配合量が上記液状ゴム100質量部に対して0.1質量部未満では、充分な発泡が得られず、一方、5質量部を超えると、発泡の均一性が低下してしまう。 In the case of (1) above, examples of the foaming agent include sodium hydrogen carbonate, and the amount of the foaming agent is not particularly limited, but is 100 parts by weight of the liquid rubber. The range of 0.1 to 5 parts by mass is preferable. When the blending amount of the foaming agent is less than 0.1 parts by mass with respect to 100 parts by mass of the liquid rubber, sufficient foaming cannot be obtained. On the other hand, when the amount exceeds 5 parts by mass, the foaming uniformity decreases.
また、本発明では、上記硬化剤として有機過酸化物を用いる。該有機過酸化物の配合量は、特に限定されるものではないが、上記液状ゴム100質量部に対して0.1〜5質量部の範囲が好ましい。有機過酸化物の配合量が上記液状ゴム100質量部に対して0.1質量部未満では、充分に硬化反応が行われず、一方、5質量部を超えると、硬化反応が多過になり、硬くなりすぎて、ゴム的性質が失われる。なお、室温で液状ゴム配合物を硬化させる場合には、レドックス分解方式を利用することができる。例えば、有機過酸化物としてメチルエチルケトンパーオキサイドを、その分解促進剤としてナフテン酸コバルトを用いることができる。この場合、液状ゴム配合物の硬化反応は、発熱反応である。そのため、上記（１）の場合、タイヤ内腔面又はリム外周面の所望の位置に塗布された液状ゴム配合物は、硬化反応に伴う反応熱により予め液状ゴム配合物に添加しておいた発泡剤が分解して、硬化反応と発泡が同時に進行して、所望のスポンジ材４となる。一方、（２）の場合は、予めメカニカルフロス法により気泡を巻き込んだ液状ゴム配合物を塗布しているので、硬化反応が起こると、液状ゴム配合物が気泡を巻き込んだ状態を維持したまま硬化して、所望のスポンジ材４となる。 In the present invention, an organic peroxide is used as the curing agent. The compounding amount of the organic peroxide is not particularly limited, but is preferably in the range of 0.1 to 5 parts by mass with respect to 100 parts by mass of the liquid rubber. When the amount of the organic peroxide is less than 0.1 parts by mass with respect to 100 parts by mass of the liquid rubber, the curing reaction is not sufficiently performed. On the other hand, when it exceeds 5 parts by mass, the curing reaction becomes excessive and hard. Too much, rubbery properties are lost. In addition, when hardening a liquid rubber compound at room temperature, a redox decomposition | disassembly system can be utilized. For example, methyl ethyl ketone peroxide can be used as the organic peroxide, and cobalt naphthenate can be used as the decomposition accelerator. In this case, the curing reaction of the liquid rubber compound is an exothermic reaction. Therefore, in the case of the above (1), the liquid rubber compound applied to a desired position on the tire lumen surface or the rim outer peripheral surface is foamed previously added to the liquid rubber compound by reaction heat accompanying the curing reaction. The agent is decomposed, and the curing reaction and foaming proceed simultaneously to obtain the desired sponge material 4. On the other hand, in the case of (2), since the liquid rubber compound in which the bubbles are entrained by the mechanical floss method is applied in advance, when the curing reaction occurs, the liquid rubber compound is cured while maintaining the state in which the bubbles are entrained. Thus, the desired sponge material 4 is obtained.
また、タイヤ内腔面又はリム外周面の所望の位置に塗布した液状ゴム配合物に、温風（30〜100℃）を吹き付けて、硬化反応と発泡を同時に起こすこともできる。この場合、予め液状ゴム配合物に添加しておく有機過酸化物は、吹き付ける温風の温度に応じて、100℃以下の分解温度を有するものを選択する。なお、上記（１）の場合は、有機過酸化物の選択基準と同様に、吹き付ける温風の温度に応じて、100℃以下の分解温度を有する発泡剤を予め液状ゴム配合物に配合する。一方、上記（２）の場合は、上述の理由により、発泡剤を配合することを要しない。 In addition, it is possible to simultaneously cause a curing reaction and foaming by blowing warm air (30 to 100 ° C.) to the liquid rubber compound applied to a desired position on the tire lumen surface or the outer peripheral surface of the rim. In this case, as the organic peroxide added in advance to the liquid rubber compound, one having a decomposition temperature of 100 ° C. or less is selected according to the temperature of the hot air to be sprayed. In the case of (1) above, a foaming agent having a decomposition temperature of 100 ° C. or lower is blended in advance with the liquid rubber compound according to the temperature of the hot air to be blown, as in the selection criteria for the organic peroxide. On the other hand, in the case of the above (2), it is not necessary to add a foaming agent for the reason described above.
上述のようにしてスポンジ材４が配設された空気入りタイヤ１及び／又はリム２を用い、（ｉ）内面にスポンジ材４を具える空気入りタイヤ１と外周面にスポンジ材４を具えるリム２、（ｉｉ）内面にスポンジ材４を具える空気入りタイヤ１とリム２、又は（ｉｉｉ）空気入りタイヤ１と外周面にスポンジ材４を具えるリム２の組み合わせで、タイヤとリムとの組立体を組み立てることで、ロードノイズを低減することが可能なタイヤとリムとの組立体を作製することができる。なお、組立体のタイヤ内腔３内には、通常の空気の他、酸素分圧を変えた空気、又は窒素等の不活性ガスを充填することができる。 Using the pneumatic tire 1 and / or rim 2 in which the sponge material 4 is disposed as described above, (i) the pneumatic tire 1 having the sponge material 4 on the inner surface and the sponge material 4 on the outer peripheral surface. Rim 2, (ii) Pneumatic tire 1 and rim 2 having sponge material 4 on the inner surface, or (iii) Pneumatic tire 1 and rim 2 having sponge material 4 on the outer peripheral surface, By assembling this assembly, an assembly of a tire and a rim that can reduce road noise can be produced. It should be noted that the tire lumen 3 of the assembly can be filled with air having a changed oxygen partial pressure or inert gas such as nitrogen in addition to normal air.
上述のように、本発明の空気入りタイヤ又はリムの製造方法では、スポンジ材用原料を調製し、該スポンジ材用原料を空気入りタイヤ１及び／又はリム２に直接塗布し、硬化させて、空気入りタイヤ１及び／又はリム２にスポンジ材４を配設するため、従来の方法に比べて、工程数が少なく、ロードノイズを低減することが可能なタイヤとリムとの組立体に用いる空気入りタイヤ及び／又はリムを低コストで製造することができる。 As described above, in the pneumatic tire or rim manufacturing method of the present invention, a sponge material is prepared, and the sponge material is directly applied to the pneumatic tire 1 and / or rim 2 and cured. Since the sponge material 4 is disposed on the pneumatic tire 1 and / or the rim 2, the number of processes is less than that of the conventional method, and the air used for the tire / rim assembly that can reduce road noise. An inset tire and / or rim can be manufactured at low cost.
以下に、実施例を挙げて本発明を更に詳しく説明するが、本発明は下記の実施例に何ら限定されるものではない。 Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to the following examples.
（実施例１）
タイヤ（サイズ：１９５／６５ＳＲ１４）内腔面のトレッドセンターを中心線として線対称に、タイヤ内腔面のトレッド裏側に幅100mmに渡って、表１に示す配合の液状ゴム配合物をスプレーにて塗布した。該塗布物は、液状ゴム配合物の調製後、室温（25℃）にて放置すること15分後に硬化反応と共に発泡が起こり始め、25分後には硬化反応、発泡ともに終了し、幅100mm、高さ45mmのスポンジ材層がタイヤ内腔面に形成された。このタイヤをリム（サイズ：１４−６ＪＪ）に装着し、タイヤとリムとの組立体を作製した。得られた組立体の効果を確かめるために、2000ccクラスの乗用車に組立体を装着し、二名乗車相当で、速度50km/hで荒れたアスファルト路を走行させ、ドライバーの耳元にて騒音を測定し、スポンジ材が配設されていない一般タイヤ（比較例１）を用いた組立体を装着した場合の騒音と比較した。また、上記のように液状ゴム配合物を塗布、発泡及び硬化させてスポンジ材を配設したタイヤの製造工数を、同一サイズのエーテル系ポリウレタンフォームからなるスポンジ材をタイヤ内腔面のトレッド裏側に貼付して製造したタイヤ（比較例２）の製造工数と比較した。これらの結果を表１に示す。
(Example 1)
The tire (size: 195 / 65SR14) is sprayed with a liquid rubber compound having the composition shown in Table 1 over a width of 100 mm on the back side of the tread of the tire lumen surface in a line symmetry with the tread center on the inner surface of the tire as the center line. Applied. After the preparation of the liquid rubber compound, the coated material is allowed to stand at room temperature (25 ° C.). After 15 minutes, foaming begins to occur with the curing reaction, and after 25 minutes, both the curing reaction and foaming are completed. A 45 mm thick sponge material layer was formed on the inner surface of the tire. This tire was mounted on a rim (size: 14-6JJ) to produce an assembly of a tire and a rim. In order to confirm the effect of the obtained assembly, the assembly was mounted on a 2000cc class passenger car, traveling on a rough asphalt road at a speed of 50km / h, equivalent to two passengers, and measuring noise at the driver's ear The noise was compared with the case where an assembly using a general tire (Comparative Example 1) in which no sponge material was disposed was mounted. In addition, the manufacturing process of a tire in which a sponge material is disposed by applying, foaming, and curing a liquid rubber compound as described above, the sponge material made of the same size ether-based polyurethane foam on the tread back side of the tire lumen surface Comparison was made with the number of manufacturing steps of the tire manufactured by pasting (Comparative Example 2). These results are shown in Table 1.
（実施例２）
表１に示す配合の液状ゴム配合物をメカニカルフロス法により気泡を巻き込んだ状態でスプレーにて塗布する以外は、実施例１と同様にして、タイヤ内腔面にスポンジ材層を形成した。また、得られたタイヤの車内騒音低減度及び製造工数を実施例１と同様にして測定・評価し、表１に示す結果を得た。
(Example 2)
A sponge material layer was formed on the tire cavity surface in the same manner as in Example 1, except that the liquid rubber compound having the composition shown in Table 1 was applied by spraying with bubbles entrained by the mechanical floss method. Further, the in-vehicle noise reduction degree and manufacturing man-hour of the obtained tire were measured and evaluated in the same manner as in Example 1, and the results shown in Table 1 were obtained.
（実施例３）
実施例１と同様にして、リム外周面のタイヤと接触しない全域に渡って高さ45mmのスポンジ材層を形成した。また、得られたタイヤの車内騒音低減度及び製造工数を実施例１と同様にして測定・評価し、表１に示す結果を得た。
(Example 3)
In the same manner as in Example 1, a sponge material layer having a height of 45 mm was formed over the entire area of the rim outer peripheral surface not in contact with the tire. Further, the in-vehicle noise reduction degree and manufacturing man-hour of the obtained tire were measured and evaluated in the same manner as in Example 1, and the results shown in Table 1 were obtained.
（実施例４）
実施例２と同様にして、リム外周面のタイヤと接触しない全域に渡って高さ45mmのスポンジ材層を形成した。また、得られたタイヤの車内騒音低減度及び製造工数を実施例１と同様にして測定・評価し、表１に示す結果を得た。
Example 4
In the same manner as in Example 2, a sponge material layer having a height of 45 mm was formed over the entire area of the rim outer peripheral surface not in contact with the tire. Further, the in-vehicle noise reduction degree and manufacturing man-hour of the obtained tire were measured and evaluated in the same manner as in Example 1, and the results shown in Table 1 were obtained.
*1：株式会社クラレ製液状ポリイソプレンゴム
*2：日本油脂株式会社製メチルエチルケトンパーオキサイド
*3：6％ナフテン酸コバルト
*4：川口化学工業株式会社製老化防止剤
*5：大内新興化学工業株式会社製発泡剤
* 1: Liquid polyisoprene rubber manufactured by Kuraray Co., Ltd.
* 2: Methyl ethyl ketone peroxide manufactured by NOF Corporation
* 3: 6% cobalt naphthenate
* 4: Anti-aging agent manufactured by Kawaguchi Chemical Co., Ltd.
* 5: Ouchi Shinsei Chemical Co., Ltd. foaming agent
本発明による実施例は、タイヤのリム組み性を損なうことなく、4〜5dBもの車内騒音の低減をもたらし、タイヤとリムとの組立体として、空洞共鳴音が効果的に低減されていることが分かった。 The embodiment according to the present invention brings about 4 to 5 dB reduction in in-vehicle noise without impairing the rim assembly performance of the tire, and the cavity resonance noise is effectively reduced as an assembly of the tire and the rim. I understood.
なお、ポリウレタンフォーム等の吸音性スポンジ材を使用する場合には、スポンジ材の成形、才断、貼付工程が必要であるが、本発明によれば、これらの工程を一工程に集約でき、表１に示すように、製造工数（製造コスト）の大幅な低減が可能となる上、接着剤等で貼り付ける従来の製造方法に比べて、製造精度を向上させることもできる。 In addition, when using a sound-absorbing sponge material such as polyurethane foam, it is necessary to form, disqualify, and affix the sponge material, but according to the present invention, these steps can be integrated into one process. As shown in FIG. 1, the manufacturing man-hour (manufacturing cost) can be greatly reduced, and the manufacturing accuracy can be improved as compared with the conventional manufacturing method in which the manufacturing process is performed using an adhesive or the like.
１ 空気入りタイヤ
２ リム
３ タイヤ内腔
４ スポンジ材
５ ビード部
６ サイドウォール部
７ トレッド部
８ カーカス
９ ベルト
１０ ビードコア
DESCRIPTION OF SYMBOLS 1 Pneumatic tire 2 Rim 3 Tire lumen 4 Sponge material 5 Bead part 6 Side wall part 7 Tread part 8
Claims (8)
空気入りタイヤを準備する工程と、
前記空気入りタイヤの内面の少なくとも一部に、有機過酸化物を含有する液状ゴム配合物を塗布する工程と、
室温で又は温風を吹き付けて、前記液状ゴム配合物を発泡及び硬化させてスポンジ材を形成する工程と、
を含むことを特徴とする空気入りタイヤの製造方法。 A method of manufacturing a pneumatic tire in which a sponge material is disposed on at least a part of an inner surface,
Preparing a pneumatic tire;
Applying a liquid rubber compound containing an organic peroxide to at least a part of the inner surface of the pneumatic tire; and
A step of foaming and curing the liquid rubber compound to form a sponge material at room temperature or by blowing warm air; and
The manufacturing method of the pneumatic tire characterized by including.
空気入りタイヤを準備する工程と、
前記空気入りタイヤの内面の少なくとも一部に、有機過酸化物を含有する液状ゴム配合物をメカニカルフロス法により気泡を巻き込んだ状態で塗布する工程と、
室温で又は温風を吹き付けて、前記液状ゴム配合物を硬化させてスポンジ材を形成する工程と、
を含むことを特徴とする空気入りタイヤの製造方法。 A method of manufacturing a pneumatic tire in which a sponge material is disposed on at least a part of an inner surface,
Preparing a pneumatic tire;
Applying a liquid rubber compound containing an organic peroxide to at least a part of the inner surface of the pneumatic tire in a state in which bubbles are involved by a mechanical floss method,
Forming a sponge material by curing the liquid rubber compound at room temperature or by blowing warm air; and
The manufacturing method of the pneumatic tire characterized by including.
リムを準備する工程と、
前記リムの外周面の少なくとも一部に、有機過酸化物を含有する液状ゴム配合物を塗布する工程と、
室温で又は温風を吹き付けて、前記液状ゴム配合物を発泡及び硬化させてスポンジ材を形成する工程と、
を含むことを特徴とするリムの製造方法。 A method for producing a rim in which a sponge material is disposed on at least a part of a side surface of a tire lumen,
Preparing the rim; and
Applying a liquid rubber compound containing an organic peroxide to at least a part of the outer peripheral surface of the rim; and
A step of foaming and curing the liquid rubber compound to form a sponge material at room temperature or by blowing warm air; and
A rim manufacturing method comprising:
リムを準備する工程と、
前記リムの外周面の少なくとも一部に、有機過酸化物を含有する液状ゴム配合物をメカニカルフロス法により気泡を巻き込んだ状態で塗布する工程と、
室温で又は温風を吹き付けて、前記液状ゴム配合物を硬化させてスポンジ材を形成する工程と、
を含むことを特徴とするリムの製造方法。 A method for producing a rim in which a sponge material is disposed on at least a part of a side surface of a tire lumen,
Preparing the rim; and
Applying a liquid rubber compound containing an organic peroxide to at least a part of the outer peripheral surface of the rim in a state where bubbles are involved by a mechanical floss method,
Forming a sponge material by curing the liquid rubber compound at room temperature or by blowing warm air; and
A rim manufacturing method comprising:
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| Application Number | Priority Date | Filing Date | Title |
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| JP2007057538A JP2008213414A (en) | 2007-03-07 | 2007-03-07 | Pneumatic tire, rim, and method for producing them |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2007057538A JP2008213414A (en) | 2007-03-07 | 2007-03-07 | Pneumatic tire, rim, and method for producing them |
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| JP2008213414A true JP2008213414A (en) | 2008-09-18 |
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| JP2007057538A Withdrawn JP2008213414A (en) | 2007-03-07 | 2007-03-07 | Pneumatic tire, rim, and method for producing them |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898491A (en) * | 2009-05-25 | 2010-12-01 | 横滨橡胶株式会社 | Air-inflation tyre |
| JP2012116189A (en) * | 2010-11-24 | 2012-06-21 | Goodyear Tire & Rubber Co:The | Method for making pneumatic tire with foam noise damper |
| CN103282188A (en) * | 2010-12-28 | 2013-09-04 | 米其林企业总公司 | Pneumatic tire and method for producing same |
| JP2015136863A (en) * | 2014-01-22 | 2015-07-30 | 住友ゴム工業株式会社 | pneumatic tire |
| EP3199380B1 (en) * | 2014-10-17 | 2021-10-06 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire and method for producing pneumatic tire |
-
2007
- 2007-03-07 JP JP2007057538A patent/JP2008213414A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101898491A (en) * | 2009-05-25 | 2010-12-01 | 横滨橡胶株式会社 | Air-inflation tyre |
| JP2010269767A (en) * | 2009-05-25 | 2010-12-02 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
| JP2012116189A (en) * | 2010-11-24 | 2012-06-21 | Goodyear Tire & Rubber Co:The | Method for making pneumatic tire with foam noise damper |
| CN103282188A (en) * | 2010-12-28 | 2013-09-04 | 米其林企业总公司 | Pneumatic tire and method for producing same |
| EP2660037A1 (en) * | 2010-12-28 | 2013-11-06 | Compagnie Generale Des Etablissements Michelin | Pneumatic tire and method for producing same |
| EP2660037A4 (en) * | 2010-12-28 | 2014-06-18 | Michelin & Cie | Pneumatic tire and method for producing same |
| JP2015136863A (en) * | 2014-01-22 | 2015-07-30 | 住友ゴム工業株式会社 | pneumatic tire |
| EP3199380B1 (en) * | 2014-10-17 | 2021-10-06 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire and method for producing pneumatic tire |
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