JP2002192912A - Precure tread and regenerated tire with precure tread - Google Patents
Precure tread and regenerated tire with precure treadInfo
- Publication number
- JP2002192912A JP2002192912A JP2000394257A JP2000394257A JP2002192912A JP 2002192912 A JP2002192912 A JP 2002192912A JP 2000394257 A JP2000394257 A JP 2000394257A JP 2000394257 A JP2000394257 A JP 2000394257A JP 2002192912 A JP2002192912 A JP 2002192912A
- Authority
- JP
- Japan
- Prior art keywords
- tread
- tire
- width direction
- radius
- curvature
- 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
Links
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- Tires In General (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、プレキュアトレ
ッドおよび該プレキュアトレッドが貼付けられた更生タ
イヤに関する。[0001] The present invention relates to a precured tread and a retreaded tire to which the precured tread is attached.
【０００２】[0002]
【従来の技術】従来のプレキュアトレッドとしては、例
えば特開平９ー７０９０３号公報に記載されているよう
な、幅方向位置に拘らず肉厚が一定であるものが知られ
ている。そして、このようなプレキュアトレッドは、台
タイヤの貼付け面（半径方向外側面）に接着用クッショ
ンゴム（未加硫ゴム）を介装した状態で貼付けられた
後、加硫されて更生タイヤの一部となる。2. Description of the Related Art As a conventional precured tread, there is known a pretread having a constant thickness regardless of a position in the width direction as described in, for example, Japanese Patent Application Laid-Open No. 9-70903. Then, such a precured tread is applied with an adhesive cushion rubber (unvulcanized rubber) interposed on an application surface (radially outer surface) of the base tire, and then vulcanized to obtain a retreaded tire. Become a part.
【０００３】[0003]
【発明が解決しようとする課題】ここで、前述した台タ
イヤの基礎となる使用済みタイヤのベルト層は、該使用
済みタイヤからトレッドを幅方向全域に亘って単一の曲
率半径で取り除こうとすると、その曲率半径（台タイヤ
の貼付け面の曲率半径）が新品タイヤのベルト層の曲率
半径より小となってしまうことがある。Here, the belt layer of a used tire, which is the basis of the above-mentioned base tire, is intended to remove the tread from the used tire with a single radius of curvature over the entire width direction. In some cases, the radius of curvature (the radius of curvature of the attachment surface of the base tire) is smaller than the radius of curvature of the belt layer of a new tire.
【０００４】そして、このような台タイヤに従来の一定
肉厚であるプレキュアトレッドを貼付けると、更生タイ
ヤのクラウンアール（子午線断面におけるトレッド外輪
郭の曲率半径）が新品タイヤのクラウンアールより小と
なり、この結果、走行時における接地形状の矩形率が小
さく、即ち、接地形状が周方向（走行方向）に細長くな
ってトレッド端部に偏摩耗が発生し易くなるという問題
点がある。When such a pre-cure tread having a constant thickness is pasted on such a base tire, the crown radius of the retreaded tire (the radius of curvature of the outer contour of the tread in the meridian section) is smaller than that of the new tire. As a result, there is a problem that the rectangular ratio of the ground contact shape during running is small, that is, the ground contact shape is elongated in the circumferential direction (running direction), and uneven wear tends to occur at the tread end.
【０００５】この発明は、偏摩耗を効果的に抑制するこ
とができるプレキュアトレッドおよび該プレキュアトレ
ッドが貼付けられた更生タイヤを提供することを目的と
する。An object of the present invention is to provide a precured tread which can effectively suppress uneven wear and a retreaded tire to which the precured tread is attached.
【０００６】[0006]
【課題を解決するための手段】このような目的は、第１
に、台タイヤに貼付けられる以前に加硫された断面略台
形状を呈するプレキュアトレッドにおいて、その肉厚ｔ
を幅方向中央から幅方向両側に向かって厚肉としたプレ
キュアトレッドにより、SUMMARY OF THE INVENTION The purpose of the invention is as follows.
In a precured tread that has a substantially trapezoidal cross-section and is vulcanized before being attached to a base tire, its thickness t
The pre-cure tread is made thicker from the center in the width direction to both sides in the width direction,
【０００７】第２に、台タイヤと、加硫後に該台タイヤ
の半径方向外側に貼付けられた断面略台形状のプレキュ
アトレッドとを備え、該プレキュアトレッドの肉厚ｔを
幅方向中央から幅方向両側に向かって厚肉とした更生タ
イヤにより達成することができる。Secondly, the vehicle has a base tire, and a precured tread having a substantially trapezoidal cross section attached to a radially outer side of the base tire after vulcanization, and having a thickness t of the precured tread from the center in the width direction. This can be achieved by a retreaded tire that is thicker toward both sides in the width direction.
【０００８】前述のように台タイヤの貼付け面の曲率半
径が新品タイヤのベルト層の曲率半径より小さい場合で
も、この発明のような肉厚ｔが幅方向中央から幅方向両
側に向かって厚肉となったプレキュアトレッドを台タイ
ヤに貼付けるようにすれば、更生タイヤのクラウンアー
ルは、台タイヤの貼付け面の曲率半径より大きくなり、
新品タイヤのクラウンアールに容易に近付けることがで
きる。これにより、走行時における接地形状の矩形率が
新品タイヤとほぼ同等となり、トレッド端部における偏
摩耗が効果的に抑制される。As described above, even when the radius of curvature of the attaching surface of the base tire is smaller than the radius of curvature of the belt layer of the new tire, the thickness t as in the present invention increases from the center in the width direction to both sides in the width direction. If the pre-cured tread is attached to the base tire, the crown radius of the retreaded tire will be larger than the radius of curvature of the mounting surface of the base tire,
It is easy to approach the crown radius of a new tire. As a result, the rectangular ratio of the ground contact shape during traveling becomes substantially equal to that of a new tire, and uneven wear at the tread edge is effectively suppressed.
【０００９】また、請求項２に記載のように構成すれ
ば、プレキュアトレッドの製造が容易となる。さらに、
請求項３に記載のように構成すれば、更生タイヤのトレ
ッドセンターにおける表面形状を円滑なものとすること
ができる。また、請求項４に記載のように構成すれば、
プレキュアトレッドの製造が容易となる。According to the second aspect of the present invention, the production of the precured tread becomes easy. further,
According to the third aspect, the surface shape of the retreaded tire at the tread center can be made smooth. Further, if configured as described in claim 4,
Precured tread is easily manufactured.
【００１０】[0010]
【発明の実施の形態】以下、この発明の第１実施形態を
図面に基づいて説明する。図１において、11は更生タイ
ヤに用いられる帯状のプレキュアトレッドであり、この
プレキュアトレッド11は加硫済みゴムから構成され、そ
の長さは台タイヤ12の貼付け面13（半径方向外側面）の
外周長にほぼ等しい。また、このプレキュアトレッド11
は幅方向断面（子午線断面）がトレッドとほぼ同形の略
台形状を呈しており、台タイヤ12の貼付け面13に接着さ
れる幅広の裏面14と、更生タイヤとなったとき踏面とな
る幅狭の表面15と、これら裏面14と表面15とを接続し、
裏面14から表面15に向かって幅方向内側に傾斜している
一対の傾斜面16とを有する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 11 denotes a belt-shaped pre-cured tread used for a retreaded tire. The pre-cured tread 11 is made of vulcanized rubber, and has a length of a sticking surface 13 (radial outer surface) of a base tire 12. Is approximately equal to the outer peripheral length of Also, this Precure Tread 11
Has a substantially trapezoidal cross-section (meridian cross-section) having substantially the same shape as the tread, and has a wide back surface 14 adhered to the attaching surface 13 of the base tire 12 and a narrow tread surface which becomes a retreaded tire. Surface 15, and these back surface 14 and surface 15 are connected,
It has a pair of inclined surfaces 16 that are inclined inward in the width direction from the back surface 14 to the front surface 15.
【００１１】ここで、前記裏面14は少なくとも幅方向中
央部が、この実施形態では裏面14の全域が平坦面から構
成されている。この結果、押出機の口金の開口形状、特
に裏面14を規定する部位の形状が簡単となり、プレキュ
アトレッド11の製造が容易となる。Here, the rear surface 14 has at least a central portion in the width direction, and in this embodiment, the entire surface of the rear surface 14 is formed of a flat surface. As a result, the opening shape of the mouthpiece of the extruder, particularly the shape of the portion that defines the back surface 14, is simplified, and the manufacture of the precured tread 11 is facilitated.
【００１２】一方、前記プレキュアトレッド11の表面15
のうち、少なくとも幅方向中央部、この実施形態では表
面15と傾斜面16とが交差するトレッド端17間の全域が、
該表面15より半径方向外側に曲率中心が位置する単一曲
率半径Ｒの、例えば 800〜2000mm程度の円弧面から構成
されている。この結果、プレキュアトレッド11の肉厚ｔ
はその幅方向中央から幅方向両側に向かってトレッド端
17に至るまで徐々に厚肉となる。On the other hand, the surface 15 of the precured tread 11
Among them, at least the widthwise central portion, in this embodiment, the entire area between the tread ends 17 where the surface 15 and the inclined surface 16 intersect,
It has a single radius of curvature R having a center of curvature located radially outward from the surface 15 and has an arc surface of, for example, about 800 to 2000 mm. As a result, the thickness t of the precured tread 11
Is the tread edge from the center in the width direction to both sides in the width direction
It gradually becomes thicker up to 17.
【００１３】これにより、前述のように台タイヤ12の貼
付け面13の曲率半径が新品タイヤのベルト層21の曲率半
径より小さい場合でも、この実施形態のプレキュアトレ
ッド11を台タイヤ12に貼付けるようにすれば、更生タイ
ヤのクラウンアール（子午線断面におけるトレッド外輪
郭の曲率半径）は、台タイヤ12の貼付け面13の曲率半径
より大きくなり、新品タイヤのクラウンアールに容易に
近付けることができる。これにより、走行時における接
地形状の矩形率が新品タイヤとほぼ同等となり、トレッ
ド端部における偏摩耗が効果的に抑制される。Thus, even when the radius of curvature of the attaching surface 13 of the base tire 12 is smaller than the radius of curvature of the belt layer 21 of a new tire as described above, the precured tread 11 of this embodiment is attached to the base tire 12. By doing so, the crown radius of the retreaded tire (the radius of curvature of the outer contour of the tread in the meridian section) becomes larger than the radius of curvature of the attaching surface 13 of the base tire 12, and can easily approach the crown radius of the new tire. As a result, the rectangular ratio of the ground contact shape during traveling becomes substantially equal to that of a new tire, and uneven wear at the tread edge is effectively suppressed.
【００１４】ここで、前述した表面15の幅方向中央部を
傾斜方向の異なる２つの平坦面から構成することも考え
られるが、このようにすると、前記表面15の幅方向中央
に鈍角の角（谷）が形成される。これに対し、前述のよ
うに表面15の少なくとも幅方向中央部を単一曲率半径Ｒ
の円弧面から構成すれば、更生タイヤのトレッドセンタ
ーにおける表面形状が円滑となる。Here, it is conceivable that the center of the surface 15 in the width direction is formed of two flat surfaces having different inclination directions. In this case, an obtuse angle ( A valley is formed. On the other hand, as described above, at least the central portion in the width direction of the surface 15 has a single radius of curvature R.
If it is comprised from the circular-arc surface of this, the surface shape in the tread center of a retreaded tire will become smooth.
【００１５】また、前述のように表面15の全域を単一曲
率半径Ｒの円弧面から構成すれば、押出機の口金の開口
形状、特に表面15を規定する部位の形状が簡単となり、
プレキュアトレッド11の製造が容易となる。If the entire area of the surface 15 is constituted by an arc surface having a single radius of curvature R as described above, the shape of the opening of the mouthpiece of the extruder, particularly the shape of the portion that defines the surface 15, can be simplified.
The production of the precured tread 11 becomes easy.
【００１６】次に、前述のようなプレキュアトレッド11
を製造する場合には、断面略台形状をした未加硫ゴムか
らなるトレッド素材26を押出し機（図示せず）から押し
出した後、所定長に切断し、その後、切断された帯状の
トレッド素材26を、図２に示すような底面に型付け面28
を有する下金型27の成型凹み29内に、表面15が型付け面
28に接触するようにしてセットする。Next, the pre-cured tread 11 as described above is used.
In the case of manufacturing a tread material 26 made of an unvulcanized rubber having a substantially trapezoidal cross section, it is extruded from an extruder (not shown), cut into a predetermined length, and then cut into a strip-shaped tread material. 26 to the bottom surface as shown in FIG.
In the molding recess 29 of the lower mold 27 having the
Set so that it touches 28.
【００１７】次に、下面に型付け面30を有する上金型31
を下金型27に当接するまで下降させる。これにより、加
硫金型32、即ち下、上金型27、31は閉止して内部に形成
されたキャビティ34にトレッド素材26が収納されるが、
このとき、下金型27の型付け面28は曲率半径Ｒの蒲鉾状
凸面であり、一方、上金型31の型付け面30は平坦面であ
るため、前述のキャビティ34は高さが幅方向中央から幅
方向外側に向かうに従い徐々に高くなる。Next, an upper mold 31 having a molding surface 30 on the lower surface.
Is lowered until it comes into contact with the lower mold 27. As a result, the vulcanizing mold 32, that is, the lower, upper molds 27, 31 are closed and the tread material 26 is stored in the cavity 34 formed therein,
At this time, the molding surface 28 of the lower mold 27 is a semi-cylindrical convex surface having a radius of curvature R, while the molding surface 30 of the upper mold 31 is a flat surface. And gradually increases toward the outside in the width direction.
【００１８】その後、これらを図示していない加硫装置
に搬入して加硫を行い、トレッド素材26をプレキュアト
レッド11とするが、このようにして成形されたプレキュ
アトレッド11は、裏面14が平坦面と、一方、表面15が単
一曲率半径Ｒの円弧面となるため、その肉厚ｔは幅方向
中央から幅方向両側に向かって徐々に厚肉となる。Thereafter, these are carried into a vulcanizing device (not shown) and vulcanized, and the tread material 26 is made into a pre-cured tread 11. The pre-cured tread 11 thus formed is Is a flat surface, and on the other hand, the surface 15 is an arc surface having a single radius of curvature R, so that the thickness t gradually increases from the center in the width direction to both sides in the width direction.
【００１９】次に、このようにして製造されたプレキュ
アトレッド11を用いて使用済みタイヤを更生する場合に
は、まず、該使用済みタイヤから残存トレッドをバフ掛
けにより取り除いて台タイヤ12とした後、図３に示すよ
うに台タイヤ12のクラウン部に未加硫ゴムからなる接着
用クッションゴム35を配置する。Next, when a used tire is rehabilitated using the pre-cured tread 11 manufactured as described above, first, a residual tread is removed from the used tire by buffing to obtain a base tire 12. Thereafter, as shown in FIG. 3, an adhesive cushion rubber 35 made of unvulcanized rubber is arranged on the crown portion of the base tire 12.
【００２０】その後、前記プレキュアトレッド11を台タ
イヤ12のクラウン部に貼付け、裏面14を台タイヤ12の貼
付け面13にクッションゴム35を介して密着させる。次
に、プレキュアトレッド11が接着された台タイヤ12を図
示していない加硫装置に搬入して加硫し更生タイヤとす
る。Thereafter, the precured tread 11 is attached to the crown of the base tire 12, and the back surface 14 is brought into close contact with the attachment surface 13 of the base tire 12 via the cushion rubber 35. Next, the base tire 12 to which the precured tread 11 is adhered is carried into a vulcanizing device (not shown) and vulcanized to obtain a retreaded tire.
【００２１】ここで、前述のように台タイヤ12の貼付け
面13の曲率半径が新品タイヤのベルト層の曲率半径より
小さくなる場合もあるが、このような場合には前述した
肉厚ｔが幅方向中央から幅方向両側に向かって徐々に厚
肉となったプレキュアトレッド11を台タイヤ12に貼付け
るようにすればよい。このようにすれば、更生タイヤの
クラウンアールは、台タイヤ12の貼付け面13の曲率半径
より大きくなり、新品タイヤのクラウンアールに容易に
近付けることができる。Here, as described above, the radius of curvature of the attaching surface 13 of the base tire 12 may be smaller than the radius of curvature of the belt layer of the new tire. Precured tread 11, which gradually becomes thicker from the center in the direction toward both sides in the width direction, may be attached to the base tire 12. In this way, the crown radius of the retreaded tire becomes larger than the radius of curvature of the attaching surface 13 of the base tire 12, and the crown radius of the retreaded tire can be easily brought close to the crown radius of the new tire.
【００２２】図４は、この発明の第２実施形態を示す図
である。この実施形態においては、プレキュアトレッド
41の裏面42の幅方向両端部に、台タイヤ12との貼付けを
強固にするため、ひれ部43を形成している。ここで、各
ひれ部43は裏面42から傾斜面44にほぼ沿って斜め外側に
延びるとともに、先端側に接近するほど薄肉となってい
る。そして、これらひれ部43の内側面は比較的小径、例
えば30mm程度の円弧面43ａから構成されている。FIG. 4 is a diagram showing a second embodiment of the present invention. In this embodiment, the precured tread
Fin portions 43 are formed at both ends in the width direction of the back surface 42 of the base 41 in order to firmly attach the base tire 12 to the base tire 12. Here, each of the fins 43 extends obliquely outward from the rear surface 42 substantially along the inclined surface 44, and becomes thinner toward the distal end side. The inner surfaces of the fins 43 are formed of a relatively small diameter, for example, an arc surface 43a of about 30 mm.
【００２３】図５は、この発明の第３実施形態を示す図
である。この実施形態においても、プレキュアトレッド
46の幅方向両端部に、台タイヤ12との貼付けを強固にす
るため、ひれ部47を形成しているが、この実施形態で
は、各ひれ部47は裏面48に沿って幅方向外側に延びると
ともに、先端側に接近するほど薄肉となっている。FIG. 5 is a diagram showing a third embodiment of the present invention. Also in this embodiment, the precured tread
Fins 47 are formed at both ends in the width direction of 46 in order to strengthen the attachment to the base tire 12, but in this embodiment, each fin 47 extends outward in the width direction along the back surface 48. At the same time, it becomes thinner as it approaches the tip side.
【００２４】図６は、この発明の第４実施形態を示す図
である。この実施形態においては、プレキュアトレッド
51の表面52の幅方向中央部を単一曲率半径Ｒの円弧面52
ａから構成するとともに、幅方向両端部を平坦面52ｂか
ら構成し、これら円弧面52ａと平坦面52ｂとを滑らかに
つないでいる。ここで、滑らかにつなぐとは、円弧面52
ａと平坦面52ｂとの接続位置において円弧面52ａに対す
る接線を平坦面52ｂ上に位置させることをいう。FIG. 6 is a diagram showing a fourth embodiment of the present invention. In this embodiment, the precured tread
An arc surface 52 having a single radius of curvature R
a, and both ends in the width direction are formed of flat surfaces 52b, and these arc surfaces 52a and the flat surfaces 52b are smoothly connected. Here, the smooth connection refers to the arc surface 52
This means that a tangent to the arc surface 52a is positioned on the flat surface 52b at the connection position between the a and the flat surface 52b.
【００２５】図７は、この発明の第５実施形態を示す図
である。この実施形態においては、プレキュアトレッド
55のトレッド端に比較的小さな曲率半径、例えば20mm程
度の円弧面56で面取りを施している。FIG. 7 is a diagram showing a fifth embodiment of the present invention. In this embodiment, the precured tread
The tread edge of the 55 is chamfered with a relatively small radius of curvature, for example, an arc surface 56 of about 20 mm.
【００２６】なお、前述の実施形態においては、プレキ
ュアトレッド11の裏面14を平坦面から構成したが、この
発明においては、前記裏面を台タイヤの貼付け面の曲率
半径とほぼ同一値である単一曲率半径の円弧面から構成
するようにしてもよい。この場合にはプレキュアトレッ
ドの表面を、該表面より半径方向内側に曲率中心が位置
し、裏面の曲率半径より大径である円弧面から構成すれ
ばよい。In the above-described embodiment, the back surface 14 of the precured tread 11 is formed of a flat surface. In the present invention, however, the back surface has a single radius that is substantially the same as the radius of curvature of the base tire attachment surface. You may make it comprise from the circular-arc surface of one curvature radius. In this case, the surface of the precured tread may be constituted by an arc surface whose center of curvature is located radially inward of the surface and whose diameter is larger than the radius of curvature of the back surface.
【００２７】また、前述の実施形態においてはプレキュ
アトレッド11の表面15を単一曲率半径Ｒの円弧面から構
成したが、この発明においては、曲率半径の異なる複数
の円弧面から構成するようにしてもよい。In the above embodiment, the surface 15 of the precured tread 11 is constituted by an arc surface having a single radius of curvature R. However, in the present invention, the surface 15 is constituted by a plurality of arc surfaces having different radii of curvature. You may.
【００２８】[0028]
【実施例】次に、試験例を説明する。この試験に当たっ
ては、いずれの部位においても肉厚が一定である従来プ
レキュアトレッドと、裏面を平坦面から、表面を曲率半
径が 800mmである円弧面から構成することで、トレッド
端における肉厚を幅方向中央における肉厚より厚くした
供試プレキュアトレッドとを準備した。次に、これら各
プレキュアトレッドを、タイヤサイズが11Ｒ22.5で、貼
付け面の曲率半径が 400mmである台タイヤにそれぞれ接
着した後、加硫して従来更生タイヤおよび実施更生タイ
ヤとした。Next, test examples will be described. In this test, the thickness of the tread at the tread edge was reduced by using a conventional pre-cured tread with a constant thickness at any part, a flat surface on the back surface, and an arc surface with a radius of curvature of 800 mm on the front surface. A test precured tread having a thickness greater than the thickness at the center in the width direction was prepared. Next, each of these pre-cured treads was bonded to a base tire having a tire size of 11R22.5 and a radius of curvature of a bonding surface of 400 mm, and then vulcanized to obtain a conventional retread tire and a practical retread tire.
【００２９】次に、前記各タイヤに 686ｋPaの内圧を充
填した後、27.2ｋＮの荷重を負荷しながらドラム上を65
km/hで完摩するまで（主溝の残溝が少なくとも１ケ所に
おいて 1.0mm以下になるまで）走行させ、そのときの走
行距離を測定した。その結果を、従来更生タイヤを指数
100で表すと、実施更生タイヤでは 123となり、完摩寿
命が向上していた。Next, after filling each of the tires with an internal pressure of 686 kPa, a 65.
The vehicle was driven until it was completely rubbed at km / h (until the remaining groove of the main groove became 1.0 mm or less in at least one location), and the running distance at that time was measured. The result is indexed to the conventional retreaded tire
Expressed as 100, it was 123 in the actual retreaded tire, indicating that the complete life was improved.
【００３０】[0030]
【発明の効果】以上説明したように、この発明によれ
ば、偏摩耗を効果的に抑制することができる。As described above, according to the present invention, uneven wear can be effectively suppressed.
【図１】この発明の第１実施形態を示すプレキュアトレ
ッド、台タイヤの幅方向断面図である。FIG. 1 is a cross-sectional view in a width direction of a pre-cure tread and a base tire according to a first embodiment of the present invention.
【図２】製造工程を説明する正面断面図である。FIG. 2 is a front sectional view illustrating a manufacturing process.
【図３】更生タイヤの子午線断面図である。FIG. 3 is a meridian sectional view of a retreaded tire.
【図４】この発明の第２実施形態を示すプレキュアトレ
ッドの幅方向断面図である。FIG. 4 is a cross-sectional view in a width direction of a precured tread showing a second embodiment of the present invention.
【図５】この発明の第３実施形態を示すプレキュアトレ
ッドの幅方向断面図である。FIG. 5 is a cross-sectional view in the width direction of a precured tread showing a third embodiment of the present invention.
【図６】この発明の第４実施形態を示すプレキュアトレ
ッドの幅方向断面図である。FIG. 6 is a cross-sectional view in the width direction of a precured tread showing a fourth embodiment of the present invention.
【図７】この発明の第５実施形態を示すプレキュアトレ
ッドの幅方向断面図である。FIG. 7 is a cross-sectional view in the width direction of a precured tread showing a fifth embodiment of the present invention.
11…プレキュアトレッド 12…台タイヤ 14…裏面 15…表面 ｔ…肉厚 11 ... Pre-cure tread 12 ... Base tire 14 ... Back side 15 ... Surface t ... Thickness
Claims (5)
断面略台形状を呈するプレキュアトレッドにおいて、そ
の肉厚ｔを幅方向中央から幅方向両側に向かって厚肉と
したことを特徴とするプレキュアトレッド。1. A precured tread which has a substantially trapezoidal cross-section and is vulcanized before being attached to a base tire, the thickness t of which is increased from the center in the width direction to both sides in the width direction. Precure tread.
ら構成した請求項１記載のプレキュアトレッド。2. The pre-cured tread according to claim 1, wherein at least a central portion in the width direction of the back surface is formed of a flat surface.
半径の円弧面から構成した請求項２記載のプレキュアト
レッド。3. The pre-cured tread according to claim 2, wherein at least a central portion in the width direction of the surface is formed of an arc surface having a single radius of curvature.
成した請求項３記載のプレキュアトレッド。4. A pre-cured tread according to claim 3, wherein the entire surface is constituted by an arc surface having a single radius of curvature.
向外側に貼付けられた断面略台形状のプレキュアトレッ
ドとを備え、該プレキュアトレッドの肉厚ｔを幅方向中
央から幅方向両側に向かって厚肉としたことを特徴とす
るプレキュアトレッドが貼付けられた更生タイヤ。5. A base tire, and a pre-cure tread having a substantially trapezoidal cross section affixed to a radially outer side of the base tire after vulcanization, wherein a thickness t of the pre-cure tread is changed from a center in a width direction to a width direction. A retread tire with a pre-cured tread affixed to both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000394257A JP2002192912A (en) | 2000-12-26 | 2000-12-26 | Precure tread and regenerated tire with precure tread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000394257A JP2002192912A (en) | 2000-12-26 | 2000-12-26 | Precure tread and regenerated tire with precure tread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002192912A true JP2002192912A (en) | 2002-07-10 |
Family
ID=18859911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000394257A Pending JP2002192912A (en) | 2000-12-26 | 2000-12-26 | Precure tread and regenerated tire with precure tread |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002192912A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100418751C (en) * | 2005-08-08 | 2008-09-17 | 王彩霞 | Process of producing cold re-treading rubber |
| WO2009019942A1 (en) * | 2007-08-08 | 2009-02-12 | Bridgestone Corporation | Precured tread for retreaded tire and retreaded tire |
| JP2012091589A (en) * | 2010-10-25 | 2012-05-17 | Bridgestone Corp | Vulcanized tread |
| JPWO2011021526A1 (en) * | 2009-08-20 | 2013-01-24 | 株式会社ブリヂストン | Tire manufacturing method and tire |
| JP2013252806A (en) * | 2012-06-07 | 2013-12-19 | Yokohama Rubber Co Ltd:The | Precure retreaded tire |
| CN103502023A (en) * | 2011-07-15 | 2014-01-08 | 株式会社普利司通 | Vulcanized tread, and tire |
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| JPS61239938A (en) * | 1985-04-16 | 1986-10-25 | Bridgestone Corp | Preparation of retreaded tire |
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| JPH0970903A (en) * | 1995-06-26 | 1997-03-18 | Yokohama Rubber Co Ltd:The | Precure tread for regenerated tire and manufacture thereof |
| JP2000079641A (en) * | 1998-06-30 | 2000-03-21 | Bridgestone Corp | Precure tread for retread tire and its production |
| WO2001076893A1 (en) * | 2000-04-05 | 2001-10-18 | Drebor Indústria De Artefatos De Borracha Ltda. | A tread for retreading tires |
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| JPS5777555A (en) * | 1980-09-08 | 1982-05-14 | Goodyear Tire & Rubber | Method of regenerating radial tire and hardened tube used for said method |
| JPS61239938A (en) * | 1985-04-16 | 1986-10-25 | Bridgestone Corp | Preparation of retreaded tire |
| JPH0479632A (en) * | 1990-07-23 | 1992-03-13 | Nec Corp | Bit phase synchronizing circuit |
| JPH0970903A (en) * | 1995-06-26 | 1997-03-18 | Yokohama Rubber Co Ltd:The | Precure tread for regenerated tire and manufacture thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100418751C (en) * | 2005-08-08 | 2008-09-17 | 王彩霞 | Process of producing cold re-treading rubber |
| WO2009019942A1 (en) * | 2007-08-08 | 2009-02-12 | Bridgestone Corporation | Precured tread for retreaded tire and retreaded tire |
| JP2009040179A (en) * | 2007-08-08 | 2009-02-26 | Bridgestone Corp | Precured tread for retreaded tire and retreaded tire |
| US8662124B2 (en) | 2007-08-08 | 2014-03-04 | Bridgestone Corporation | Precured tread for retreaded tire and retreaded tire |
| JPWO2011021526A1 (en) * | 2009-08-20 | 2013-01-24 | 株式会社ブリヂストン | Tire manufacturing method and tire |
| JP5661631B2 (en) * | 2009-08-20 | 2015-01-28 | 株式会社ブリヂストン | Tire manufacturing method and tire |
| JP2012091589A (en) * | 2010-10-25 | 2012-05-17 | Bridgestone Corp | Vulcanized tread |
| CN103502023A (en) * | 2011-07-15 | 2014-01-08 | 株式会社普利司通 | Vulcanized tread, and tire |
| CN103502023B (en) * | 2011-07-15 | 2015-09-16 | 株式会社普利司通 | Sulfuration tyre surface and tire |
| JP2013252806A (en) * | 2012-06-07 | 2013-12-19 | Yokohama Rubber Co Ltd:The | Precure retreaded tire |
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