JPH04119830A - Manufacture of pneumatic tire - Google Patents
Manufacture of pneumatic tireInfo
- Publication number
- JPH04119830A JPH04119830A JP2239985A JP23998590A JPH04119830A JP H04119830 A JPH04119830 A JP H04119830A JP 2239985 A JP2239985 A JP 2239985A JP 23998590 A JP23998590 A JP 23998590A JP H04119830 A JPH04119830 A JP H04119830A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- tire
- splice
- cut
- constituent material
- 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 description 5
- 229920001971 elastomer Polymers 0.000 claims abstract description 49
- 239000005060 rubber Substances 0.000 claims abstract description 49
- 239000000463 material Substances 0.000 claims abstract description 41
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000004568 cement Substances 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 11
- 239000002904 solvent Substances 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 3
- 239000000470 constituent Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 14
- 238000000465 moulding Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 abstract description 13
- 238000001125 extrusion Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 8
- 239000002174 Styrene-butadiene Substances 0.000 description 5
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000000341 volatile oil Substances 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- DEQZTKGFXNUBJL-UHFFFAOYSA-N n-(1,3-benzothiazol-2-ylsulfanyl)cyclohexanamine Chemical compound C1CCCCC1NSC1=NC2=CC=CC=C2S1 DEQZTKGFXNUBJL-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010058 rubber compounding Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Tyre Moulding (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、スチレン含有量の多いスチレンブタジェン共
重合体ゴムを含有するゴム組成物からなるタイヤトレッ
ド構成材料のスプライス部の接合強力を向上した空気入
りタイヤの製造方法に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention improves the bonding strength of the splice portion of a tire tread constituent material made of a rubber composition containing styrene-butadiene copolymer rubber with a high styrene content. The present invention relates to a method of manufacturing a pneumatic tire.
従来、空気入りタイヤの製造方法において、トレッド部
の成形は未加硫のゴム組成物を押出成型機から帯状に押
出してタイヤトレッド構成材料（以下、トレッド構成材
料と略す）を成形し、このトレンド構成材料を一定の長
さに切断した後成形ドラム上に環状に巻回して両端部を
相互に接合するようにしている。この接合方法としては
、トレッド構成材料の両端部のスプライス面にタック性
に優れたゴムセメントを塗布して行っていた。しかしな
がら、トレッドゴムとして、スチレン含有量が３０重量
％以上のスチレン−ブタジエン共重合体ゴム（以下、Ｈ
３−５ＢＲという）を含有するゴム組成物を使用する場
合は、スプライス部の接合強力が低下し、走行中にスプ
ライス部の剥離が発生するという問題があった。Conventionally, in the manufacturing method of pneumatic tires, the tread part is formed by extruding an unvulcanized rubber composition into a belt shape from an extrusion molding machine to form the tire tread constituent material (hereinafter abbreviated as tread constituent material). After cutting the component material to a certain length, it is wound in an annular shape on a forming drum, and both ends are joined together. This joining method has been carried out by applying rubber cement with excellent tackiness to the splice surfaces at both ends of the tread constituent material. However, as tread rubber, styrene-butadiene copolymer rubber (hereinafter referred to as H
When using a rubber composition containing 3-5BR), there was a problem in that the bonding strength of the splice portion decreased and the splice portion peeled off during running.
このような欠点を解消するため、本発明者は、Ｈ５−Ｓ
ＢＲを含有するゴム組成物からなるトレッド構成材料を
加熱された刃物（以下、ホットメスという）を用いて一
定の角度で切断してスプライス面を形成し、このスプラ
イス面を一定時間内に貼り合わせる方法を提案した（特
開昭６２−１８９１４９号公報）。しかしながら、この
方法は、切断後一定時間内にできるだけ速やかに貼り合
わせを完了しないと、時間が経過するにつれてスプライ
ス面にブルーム物が析出してタックを低下させ、スプラ
イス部の接合強力を低下させるため、作業性に著しい制
約を受ける欠点があった。In order to eliminate such drawbacks, the present inventor has developed H5-S
A method in which a tread constituent material made of a rubber composition containing BR is cut at a certain angle using a heated knife (hereinafter referred to as a hot scalpel) to form a splice surface, and the splice surfaces are bonded together within a certain period of time. (Japanese Unexamined Patent Publication No. 189149/1983). However, with this method, if the bonding is not completed as quickly as possible within a certain period of time after cutting, blooms will precipitate on the splice surface as time passes, reducing the tack and reducing the joint strength of the splice. However, it had the disadvantage of severely restricting workability.
本発明は、スチレン含有量の多いｌ５−５ＢＲを含有す
るゴム組成物からなるトレッド構成材料を接合する場合
、良好な接合強度を得ることができ、しかも時間的制約
を受けることなく作業性の自由度を向上する空気入りタ
イヤの製造方法を提供することを目的とする。The present invention makes it possible to obtain good bonding strength when bonding tread constituent materials made of rubber compositions containing l5-5BR with a high styrene content, and to provide freedom in workability without being subject to time constraints. The purpose of the present invention is to provide a method for manufacturing a pneumatic tire that improves performance.
このため、本発明方法は、スチレン含有量が３０重量％
以上のスチレン−ブタジエン共重合体ゴムを含有するゴ
ム組成物をトレッド構成材料に押出成形し、このトレッ
ド構成材料を一定の長さに切断し、その両端部をスプラ
イスして環状に成形する方法において、前記トレンド構
成材料を１００℃〜３００℃の温度に加熱した刃物で切
断してスプライス面を形成し、そのスプライス面に少な
くとも４００ ｇ ／ｃｍのタック値を有するゴムセメ
ントを塗布し、このゴムセメント中の溶剤等を乾燥除去
した後両端のスプライス面を貼り合わせてグリーンタイ
ヤを成形し、しかる後該グリーンタイヤをモールドで加
硫成形することを要旨とするものである。Therefore, in the method of the present invention, the styrene content is 30% by weight.
A method in which a rubber composition containing the above styrene-butadiene copolymer rubber is extruded into a tread constituent material, the tread constituent material is cut into a certain length, and both ends are spliced to form an annular shape. , the trend component material is cut with a knife heated to a temperature of 100 ° C to 300 ° C to form a splice surface, and a rubber cement having a tack value of at least 400 g / cm is applied to the splice surface, and the rubber cement The gist of this method is to dry and remove the solvent, etc., bond the splice surfaces at both ends together to form a green tire, and then vulcanize the green tire in a mold.
本発明方法によれば、スチレン含有量の多いＨ５−３Ｂ
Ｒを含有するゴム組成物からなるトレッド構成材料の両
端部をホットメスで切断してスプライス面を形成し、こ
のスプライス面に４００Ｋｇ／ｃｒｒ１以上のタック値
を有するゴムセメントを塗布することにより、スプライ
ス面に経時的に安定したタック性を付与し、作業性の自
由度を向上し、しかもスプライス部の接合強力を向上す
ることができる。According to the method of the present invention, H5-3B with a high styrene content
A splice surface is formed by cutting both ends of a tread constituent material made of a rubber composition containing R with a hot scalpel, and applying rubber cement having a tack value of 400 kg/crr1 or more to this splice surface. It is possible to impart stable tackiness over time, improve the degree of freedom in workability, and improve the joint strength of splice parts.
本発明において、タック値とはピクマタソクメーター■
型（東洋精機■製）を用い、２０℃、荷重５００ｇ、サ
ンプル幅１ｃｍ、圧着時間０秒、下降速度５０ｃｍ／分
、上昇速度１２５ｃｍ／分の条件下に測定した値をいう
。In the present invention, the tack value is the Pikmatasokumeter■
This refers to the value measured using a mold (manufactured by Toyo Seiki ■) at 20° C., a load of 500 g, a sample width of 1 cm, a crimping time of 0 seconds, a descending speed of 50 cm/min, and a rising speed of 125 cm/min.
以下、本発明の構成について詳しく説明する。Hereinafter, the configuration of the present invention will be explained in detail.
本発明のトレンド構成材料は、スチレン含有量が３０重
量％以上のＨ３−５ＢＲを含有するゴム組成物から構成
される。このゴム組成物にはＨ５−５ＢＲとスチレン含
有量が３０重量部未満のスチレン−ブタジエン共重合体
ゴム（以下、車にＳＢＲと記載する）とを併用すること
ができる。この場合は、タイヤトレッドとしての良好な
耐摩耗性や耐カット性を付与するため、Ｈ５−５ＢＩ？
とＳＢＲとの合計量に対するスチレン含有量が３０重量
％以上になるように混合割合を調節する。また、このゴ
ム組成物には、カーボンブラック、オイル、その他の配
合薬品を適宜配合することができる。The trend constituent material of the present invention is composed of a rubber composition containing H3-5BR with a styrene content of 30% by weight or more. In this rubber composition, H5-5BR and a styrene-butadiene copolymer rubber having a styrene content of less than 30 parts by weight (hereinafter referred to as SBR for cars) can be used in combination. In this case, in order to provide good wear resistance and cut resistance as a tire tread, H5-5BI?
The mixing ratio is adjusted so that the styrene content is 30% by weight or more based on the total amount of SBR and SBR. Further, carbon black, oil, and other compounded chemicals may be appropriately blended into this rubber composition.
このようなゴム組成物からなるトレッド構成材料は、ス
チレン含有量が大きいために、硬くてタック性に欠ける
傾向がある。本発明方法は、このようなトレッド構成材
料の両端部を表面温度１００℃〜３００℃のホットメス
で切断することによりブルーム物が存在せず、良好なタ
ック性を有する新鮮なスプライス面を形成する。この切
断時のホットメスの温度が１００℃未満では未加硫のト
レッド構成材料を変形させずに切断することが難しくな
る。また、３００℃を越えるとホットメスに接触したゴ
ムが分解または炭化して逆に接着力とタック性を低下さ
せてしまう。Tread constituent materials made of such rubber compositions tend to be hard and lack tackiness because of their high styrene content. The method of the present invention forms a fresh splice surface free from blooms and having good tackiness by cutting both ends of such tread constituent material with a hot scalpel at a surface temperature of 100° C. to 300° C. If the temperature of the hot scalpel during this cutting is less than 100° C., it will be difficult to cut the unvulcanized tread constituent material without deforming it. Furthermore, if the temperature exceeds 300°C, the rubber that comes into contact with the hot scalpel will decompose or carbonize, conversely reducing adhesive strength and tackiness.
このホ・ットメスの温度は、望ましくは２００℃〜２５
０℃にするのがよい。また、ホットメスによる切断は、
予め長く巻き取られた帯状のトレッド構成材料をホット
メスで順次切断してスブライス面を形成することができ
る。又は予めトレッド構成材料を若干長めに切断してお
き、その両端末をタイヤトレッド構成材料の上下面に対
して縦、横のいずれかの方向からホットメスで切断して
スプライス面を形成することができる。The temperature of this hot scalpel is preferably 200°C to 25°C.
It is best to keep it at 0°C. In addition, cutting with a hot scalpel
A splice surface can be formed by sequentially cutting a long strip of tread constituent material with a hot scalpel. Alternatively, the splice surface can be formed by cutting the tread component material into a slightly longer length in advance, and cutting both ends of the material with a hot knife either vertically or horizontally with respect to the top and bottom surfaces of the tire tread component material. .
この切断面とトレッド構成材料表面とのなす角度及び切
断面とトレッド構成材料底面とのなす角度は、それぞれ
５０度以下にすることが好ましい。５０度以下の角度で
切断してスプライス面を形成し、貼り合わせることによ
り、加硫中の貼り合わせ面に垂直なプレス圧力、すなわ
ち接着圧力を高くして、スプライス部の接合強力を十分
に高くすることができる。The angle between the cut surface and the surface of the tread material and the angle between the cut surface and the bottom surface of the tread material are each preferably 50 degrees or less. By cutting at an angle of 50 degrees or less to form a splice surface and bonding it together, the press pressure perpendicular to the bonding surface during vulcanization, that is, the adhesive pressure, can be increased to sufficiently increase the bonding strength of the splice part. can do.
次いで、トレッド構成材料のスプライス面には、少なく
とも４００ ｇ ７ｃｍのタック値を有するゴムセメン
トが塗布される。このゴムセメントを塗布することによ
り、スプライス面に時間の経過には左右されない安定な
タック性が付与され、貼り合わせの作業性を向上するこ
とができる。しかもスプライス面の接合強力を向上する
ことができる。しかし、ゴムセメントとして、タック値
が４００ ｇ ／ｃｍ未満のものを使用すると、スプラ
イス面のタック性を向上し、接合強力を十分に良好なも
のにすることが困難になる。The splice surfaces of the tread construction material are then applied with rubber cement having a tack value of at least 400 g 7 cm. By applying this rubber cement, stable tackiness that is unaffected by the passage of time is imparted to the splice surface, and the workability of bonding can be improved. Moreover, the bonding strength of the splice surfaces can be improved. However, if a rubber cement with a tack value of less than 400 g/cm is used, it becomes difficult to improve the tackiness of the splice surface and to make the bonding strength sufficiently good.
このタック値が４００ ｇ ７ｃｍ以上のゴムセメント
の例としては、たとえばＳＢＲを主成分とするポリマー
からなり、カーボンブラ・ツク、オイル、加硫剤、加硫
促進剤等の通常のゴム配合剤に加えて、アルキルフェノ
ール樹脂、ロジン、アルキルアセチレン樹脂等のタッキ
ファイヤ−を配合したゴム組成物を、トルエン、キシレ
ン、ゴム揮発油等の溶剤で溶解したもの等を例示するこ
とができる。An example of a rubber cement with a tack value of 400 g 7 cm or more is, for example, made of a polymer whose main component is SBR, and which is compatible with ordinary rubber compounding agents such as carbon black, oil, vulcanizing agent, and vulcanization accelerator. In addition, rubber compositions containing a tackifier such as alkylphenol resin, rosin, and alkyl acetylene resin may be dissolved in a solvent such as toluene, xylene, or rubber volatile oil.
また、このゴムセメントのスプライス面への塗布は、ホ
ットメスで切断した後できるだけ速やかに塗布すること
が望ましい。Further, it is desirable to apply this rubber cement to the splice surface as soon as possible after cutting with a hot scalpel.
実施例、比較例１〜４ 次の５種類のレーシング用スリックタイヤを製作した。 Examples, comparative examples 1 to 4 We manufactured the following five types of racing slick tires.
これらのタイヤのサイズは、いずれも同一の２２５１５
１５−１３ とした。All of these tires have the same size, 22515.
The score was 15-13.
本発明タイヤ：
第１表に示した配合組成を有するトレッドゴムＡを、通
常のロール、チューバーを使用して帯状に押出成形して
トレッド構成材料を作製した。このトレンド構成材料を
２１０℃のホットメスで所定の長さに切断してスプライ
ス面を形成し、このスプライス面に第２表に示したゴム
セメント（ａｌを塗布した。次いで環状に成形ドラム上
に巻回してグリーンタイヤを成形し、このグリーンタイ
ヤをモールドで加硫成形してタイヤを製作した。Tire of the Invention: Tread rubber A having the compounding composition shown in Table 1 was extruded into a strip using an ordinary roll and tuber to produce tread constituent materials. This trend component material was cut into a predetermined length using a hot scalpel at 210°C to form a splice surface, and rubber cement (Al) shown in Table 2 was applied to this splice surface. A green tire was formed by turning the tire, and this green tire was vulcanized and formed in a mold to produce a tire.
比較タイヤＩ：
ホットメスの温度を９０℃とした以外は、本発明タイヤ
と同じ方法によりタイヤを製作した。Comparative Tire I: A tire was manufactured using the same method as the tire of the present invention, except that the temperature of the hot scalpel was 90°C.
比較タイヤ■：
ホットメスの温度を３１０℃とした以外は、本発明タイ
ヤと同じ方法によりタイヤを製作した。Comparative Tire ■: A tire was manufactured in the same manner as the tire of the present invention, except that the temperature of the hot scalpel was 310°C.
比較タイヤ■ニ
ドレッド構成材料のスプライス面にゴムセメントを塗布
しなかった以外は、本発明タイヤと同じ方法によりタイ
ヤを製作した。Comparative Tire A tire was manufactured in the same manner as the tire of the present invention, except that rubber cement was not applied to the splice surface of the Nidred constituent material.
比較タイヤ■：
トレンド構成材料のスプライス面に、第２表に示すゴム
セメント（ｂ）を塗布した以外は、本発明タイヤと同じ
方法によりタイヤを製作した。Comparative Tire ■: A tire was manufactured by the same method as the tire of the present invention, except that the rubber cement (b) shown in Table 2 was applied to the splice surface of the Trend constituent material.
これらのタイヤについて、下記のサーキット走行後のス
プライス状態を評価した。また、下記の方法によりタイ
ヤ成形時のトレンド構成材料のスプライス面のタック性
についても評価した。これらの結果を第３表に示した。These tires were evaluated for splice condition after running on the circuit as described below. Furthermore, the tackiness of the splice surface of the trend constituent materials during tire molding was also evaluated using the following method. These results are shown in Table 3.
＋１） サーキット のスプライス の ：１
周４．４ Ｋｍのサーキットを１５周走行した後のスプ
ライス部の外観を観察し、次の基準により判定した。+1) Circuit splice :1
After driving 15 laps around a circuit with a circumference of 4.4 km, the appearance of the splice portion was observed and judged based on the following criteria.
良好（○）−スプライス部が全く見えないもの
やや良（△）＝スプライス部が１ｎ以内の深さで剥がれ
ているもの
不良（×）＝スプライス部がＩＮより深く剥がれている
もの
（２）底長臣叫久ヱＬ比：
各条件で切断した未加硫のトレッドを成形時貼り合わせ
る際のタックを下記基準により判定した。Good (○) - The splice part is not visible at all Fairly good (△) = The splice part has peeled off to a depth of 1n or less Poor (x) = The splice part has peeled off deeper than IN (2) Bottom Nagatomi ShokueL ratio: The tack when unvulcanized treads cut under each condition were bonded together during molding was judged according to the following criteria.
良好（○）＝軽く押付けるだけで再び剥がそうとしても
容易に剥がれないもの
やや良（△）＝軽く押付けるだけで容易に接合するが強
く引張れば剥がれるもの
不良（×）＝軽く押付けるだけでは接合せず簡単に剥が
れてしまうもの
〔本頁以下余白〕
第１表
第１表中、” ： ５ＢＲ−Ａはコールドタイプの乳
化重合ＳＢＲ、オイル配合量３７．５重量部の油展品
” ： Ｎ−１，３−ジメチルブチル−Ｎｏ−フェニル
−ｐフェニレンジアミン
＄３：Ｎ−シクロへキシル−２−ベンゾチアゾールスル
フェンアミド。Good (○) = It does not come off easily even if you try to peel it off again even if you press it lightly. Fairly Good (△) = It easily joins when you press it lightly, but it peels off if you pull it hard. Poor (x) = You press it lightly. Items that do not bond and easily peel off when used alone [Margins below this page] Table 1 In Table 1, "5BR-A is a cold type emulsion polymerized SBR, an oil-extended product with an oil content of 37.5 parts by weight." : N-1,3-dimethylbutyl-No-phenyl-p-phenylenediamine $3: N-cyclohexyl-2-benzothiazolesulfenamide.
第２表
第２表中の配合剤は、セメントのもととなるゴムの組成
で、各セメントは、これを１０重量％の濃度でゴム揮発
油に溶解して作成した。Table 2 The compounding agents in Table 2 are the compositions of the rubber that is the basis of the cement, and each cement was prepared by dissolving this in rubber volatile oil at a concentration of 10% by weight.
また、第２表中の各配合成分の数値は重量部である。Furthermore, the numerical values for each compounded component in Table 2 are parts by weight.
（本頁以下、余白）
第３表
第３表から、トレンド構成材料をスチレン含有量が３０
重量％以上のＨ３−５ＢＲを含有するゴム組成物から構
成したタイヤにおいては、トレッド構成材料を切断する
ホットメスの温度が１００℃未満又は３００℃を超えた
り（比較タイヤＩ及び■）、ゴムセメントを塗布しなか
ったり （比較タイヤＩＩ［）、ゴムセメントのタック
値が４００ｇ／ｃｍ未満であったり （比較タイヤ■）
すると、スプライス面のタック性が不十分となり作業性
が悪化したり、スプライス部の接合強力を十分に大きく
することができなかった。(Below this page, margins) Table 3 From Table 3, trend constituent materials with a styrene content of 30
In tires constructed from rubber compositions containing H3-5BR in an amount of % or more by weight, the temperature of the hot scalpel used to cut the tread constituent material is less than 100°C or more than 300°C (Comparative Tires I and ■), or rubber cement is No coating was applied (Comparative tire II [)], or the tack value of rubber cement was less than 400 g/cm (Comparative tire ■)
As a result, the tackiness of the splice surface was insufficient, resulting in poor workability and the joint strength of the splice portion could not be sufficiently increased.
これに対して、本発明タイヤは良好なタック性を有し、
しかもスプライス部の接合強力が向上していた。In contrast, the tire of the present invention has good tackiness,
Moreover, the joint strength of the splice portion was improved.
本発明の方法によれば、スチレン含有量が３０重量％以
上のＨ５−５ＢＲを含有するゴム組成物を帯状のタイヤ
トレッド構成材料に成形し、このトレッド構成材料の両
端部をそれぞれ１００℃〜３００℃に加熱した刃物で切
断してスプライス面を形成し、このスプライス面に少な
くとも４００ｇ／ｃｍのタック値を有するゴムセメント
を塗布し、乾燥により溶媒等を除去することにより、経
時的に安定したタック性を付与することができるためト
レッド構成材料の両端部の貼り合わせ作業性が容易にな
り、しかもスプライス部の接合強力を向上することがで
きる。According to the method of the present invention, a rubber composition containing H5-5BR with a styrene content of 30% by weight or more is molded into a band-shaped tire tread constituent material, and both ends of this tread constituent material are heated at 100°C to 300°C. A splice surface is formed by cutting with a knife heated to ℃, and a rubber cement with a tack value of at least 400 g/cm is applied to this splice surface, and the solvent etc. are removed by drying to create a tack that is stable over time. Since the tread material can be imparted with elasticity, the workability of bonding both ends of the tread constituent material is facilitated, and the bonding strength of the splice portion can be improved.
Claims (1)
ン共重合体ゴムを含有するゴム組成物をタイヤトレッド
構成材料に押出成形し、該タイヤトレッド構成材料を一
定の長さに切断し、その両端部をスプライスして環状に
成形する方法において、前記タイヤトレッド構成材料を
１００℃〜３００℃の温度に加熱した刃物で切断してス
プライス面を形成し、そのスプライス面に少なくとも４
００ｇ／ｃｍのタック値を有するゴムセメントを塗布し
、該ゴムセメント中の溶剤等を乾燥除去した後両端のス
プライス面を貼り合わせてグリーンタイヤを成形し、し
かる後該グリーンタイヤをモールドで加硫成形する空気
入りタイヤの製造方法。A rubber composition containing a styrene-butadiene copolymer rubber having a styrene content of 30% by weight or more is extruded into a tire tread constituent material, the tire tread constituent material is cut into a certain length, and both ends of the rubber composition are extruded into a tire tread constituent material. In the method of splicing and forming into an annular shape, the tire tread constituent material is cut with a knife heated to a temperature of 100°C to 300°C to form a splice surface, and the splice surface is
Rubber cement having a tack value of 00 g/cm is applied, and after drying and removing the solvent etc. in the rubber cement, the splice surfaces at both ends are bonded together to form a green tire, and then the green tire is vulcanized in a mold. A method of manufacturing a pneumatic tire by molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2239985A JP2939651B2 (en) | 1990-09-12 | 1990-09-12 | Manufacturing method for pneumatic tires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2239985A JP2939651B2 (en) | 1990-09-12 | 1990-09-12 | Manufacturing method for pneumatic tires |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04119830A true JPH04119830A (en) | 1992-04-21 |
| JP2939651B2 JP2939651B2 (en) | 1999-08-25 |
Family
ID=17052763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2239985A Expired - Fee Related JP2939651B2 (en) | 1990-09-12 | 1990-09-12 | Manufacturing method for pneumatic tires |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2939651B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002225154A (en) * | 2001-01-29 | 2002-08-14 | Sumitomo Rubber Ind Ltd | Method for manufacturing pneumatic tire and pneumatic tire manufactured thereby |
| US6827892B2 (en) * | 2001-11-09 | 2004-12-07 | Ford Global Technologies, Llc | Method of preparing thin-walled articles |
| JP2014087956A (en) * | 2012-10-30 | 2014-05-15 | Sumitomo Rubber Ind Ltd | Joining method of cord ply for tire |
-
1990
- 1990-09-12 JP JP2239985A patent/JP2939651B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002225154A (en) * | 2001-01-29 | 2002-08-14 | Sumitomo Rubber Ind Ltd | Method for manufacturing pneumatic tire and pneumatic tire manufactured thereby |
| JP4673486B2 (en) * | 2001-01-29 | 2011-04-20 | 住友ゴム工業株式会社 | Pneumatic tire manufacturing method and pneumatic tire manufactured thereby |
| US6827892B2 (en) * | 2001-11-09 | 2004-12-07 | Ford Global Technologies, Llc | Method of preparing thin-walled articles |
| JP2014087956A (en) * | 2012-10-30 | 2014-05-15 | Sumitomo Rubber Ind Ltd | Joining method of cord ply for tire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2939651B2 (en) | 1999-08-25 |
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