JPS63159543A - Tire fabric for tire - Google Patents
Tire fabric for tireInfo
- Publication number
- JPS63159543A JPS63159543A JP61298870A JP29887086A JPS63159543A JP S63159543 A JPS63159543 A JP S63159543A JP 61298870 A JP61298870 A JP 61298870A JP 29887086 A JP29887086 A JP 29887086A JP S63159543 A JPS63159543 A JP S63159543A
- Authority
- JP
- Japan
- Prior art keywords
- tire
- cord
- elongation
- blind
- cords
- 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
- 239000004744 fabric Substances 0.000 title claims description 21
- 229920006231 aramid fiber Polymers 0.000 claims description 18
- 239000000835 fiber Substances 0.000 claims description 14
- 229920000728 polyester Polymers 0.000 claims description 11
- 229920001778 nylon Polymers 0.000 claims description 7
- 210000005069 ears Anatomy 0.000 claims description 3
- 239000004760 aramid Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 4
- 229920002302 Nylon 6,6 Polymers 0.000 description 4
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 4
- 229920000271 Kevlar® Polymers 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 239000004761 kevlar Substances 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IVIDDMGBRCPGLJ-UHFFFAOYSA-N 2,3-bis(oxiran-2-ylmethoxy)propan-1-ol Chemical compound C1OC1COC(CO)COCC1CO1 IVIDDMGBRCPGLJ-UHFFFAOYSA-N 0.000 description 1
- 229920001494 Technora Polymers 0.000 description 1
- 229920000561 Twaron Polymers 0.000 description 1
- 229920003235 aromatic polyamide Chemical group 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 229940074404 sodium succinate Drugs 0.000 description 1
- ZDQYSKICYIVCPN-UHFFFAOYSA-L sodium succinate (anhydrous) Chemical compound [Na+].[Na+].[O-]C(=O)CCC([O-])=O ZDQYSKICYIVCPN-UHFFFAOYSA-L 0.000 description 1
- 239000004950 technora Substances 0.000 description 1
- 239000004762 twaron Substances 0.000 description 1
- KAKZBPTYRLMSJV-UHFFFAOYSA-N vinyl-ethylene Natural products C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Landscapes
- Tires In General (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Woven Fabrics (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、タイヤのカーカス層に用いた場合にタイヤサ
イドウオール部の不均一性を解消し得るタイヤ用すだれ
織物に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a blind fabric for a tire that can eliminate non-uniformity in the tire sidewall portion when used in the carcass layer of a tire.
自動車の普及、高速道路の充実とともに空気式タイヤの
ラジアル化は急速に伸展し、現在、乗用車タイヤのうち
約８０％が、また、トランク、バス用タイヤのうち約５
０％がラジアル化されている。この理由は、タイヤ周方
向に対し１０′〜３０°に配列された二層以上のコード
層からなるベルト補強層とタイヤ周方向に対しほぼ９０
°に配列された一層以上のカーカス層からなる補強層を
有するラジアルタイヤが、従来のバイアスタイヤに比較
し優れた性能、即ち耐摩耗性、耐高速性、操縦安定性を
有するからである。この近年のラジアル化の伸展に伴い
ラジアルタイヤに対する性能要求も高度化し、特に上記
運動性能のさらなる向上の他、振動、乗り心地といった
居住性の向上、また、タイヤ外観の均一性の向上も大き
な要求となっている。このような要求に対し、アラミド
繊維をカーカス層に用いることで運動性能の向上を試み
る考案がなされている。アラミド繊維は、そのほとんど
が芳香族環とアラミド結合からなり、軽量でかつ高強度
、高モジェラス故に、従来よりカーカスに用いられてい
るナイロン繊維、ポリエステル繊維等の有機繊維に比較
し、タイヤの操縦安定性や高速性の向上が得られる。し
かしながら、本発明者の検討によるとアラミド繊維をラ
ジアルタイヤのカーカス層として用いた場合、アラミド
繊維の高モジェラス性に起因するタイヤ製造上の不都合
が生じ、その結果、タイヤ外観、特にタイヤサイドウオ
ール部の凹凸現象として不均一性の問題が発生する。即
ち、ラジアルタイヤにおいて、カーカス層はタイヤコー
ドすだれ織物をゴムでトッピングした後、コード方向に
対しほぼ直角に裁断された後、裁断されたすだれ織物の
両端部（以下、両耳部という）を数Ｎ〜１ａｙ＋程度重
ね貼り合わせ、その後にタイヤ成型ドラム上にてドラム
に巻きつけ、カーカス層となる。With the spread of automobiles and the expansion of highways, the use of radial pneumatic tires has rapidly expanded, and currently accounts for approximately 80% of all passenger car tires, and approximately 50% of trunk and bus tires.
0% is radialized. The reason for this is that the belt reinforcing layer consists of two or more cord layers arranged at an angle of 10' to 30 degrees to the tire circumferential direction and
This is because a radial tire having a reinforcing layer consisting of one or more carcass layers arranged in a radial direction has superior performance compared to conventional bias tires, that is, wear resistance, high speed resistance, and handling stability. With the recent expansion of radial tires, the performance requirements for radial tires have become more sophisticated.In addition to further improving the above-mentioned driving performance, there are also great demands for improvements in comfort such as vibration and ride comfort, as well as improvements in the uniformity of the tire appearance. It becomes. In response to these demands, attempts have been made to improve exercise performance by using aramid fibers in the carcass layer. Aramid fibers are mostly composed of aromatic rings and aramid bonds, and because they are lightweight, have high strength, and have high modulus, they are more effective in steering tires than organic fibers such as nylon fibers and polyester fibers, which are conventionally used in carcass. Improved stability and high speed can be obtained. However, according to studies conducted by the present inventors, when aramid fibers are used as the carcass layer of a radial tire, there are inconveniences in tire manufacturing due to the high modulus of aramid fibers, and as a result, the appearance of the tire, especially in the tire sidewall area, is affected. The problem of non-uniformity occurs as a result of the unevenness phenomenon. That is, in a radial tire, the carcass layer is made by topping a tire cord blind fabric with rubber, cutting it almost perpendicularly to the cord direction, and then cutting both ends of the cut fabric (hereinafter referred to as both ears) into several pieces. The layers are laminated together by about N to 1ay+ and then wound around a tire molding drum to form a carcass layer.
従って、タイヤ中のカーカス層には、すだれ織物の両耳
部が重ね貼り合わせられた部分が点在することになる。Therefore, the carcass layer in the tire is dotted with portions where both the edge portions of the blind fabric are laminated together.
この重ね貼り合わせ部（以下、スプライス部という）の
一定荷重時の伸びは、重ねられていない部分の同一荷重
の時の伸びに対し大きく低下するため、タイヤを加硫後
空気を充填した場合、特にタイヤサイドウオール部で伸
度の低いスプライスがへこみ、他の部分のサイドウオー
ル部がふくらむという凹凸現象を生じ、タイヤの均一性
が低下する。このような問題に対し、従来の繊維素材、
即ちポリエステル、ナイロン等をカーカスに用いる場合
、すだれ耳部のコードに熱弛緩処理した伸度の大きいコ
ードを挿入する方法や、すだれ本体部コードより撚り数
を多くし、同様伸度を大きくしたコードを挿入する方法
等が考案されている。しかしながら、アラミド繊維は前
記した如くそのほとんどが芳香族からなる分子構造故に
、熱収縮性はＯ（ゼロ）であり、上記のような熱弛緩処
理によって高伸度化をはかることが実質的に不可能であ
り、また、分子が剛直で極めて高いモジュラスを有する
ことから、使用可能な範囲で撚り数を上げても伸度の改
善はわずかであり、さらに、大幅に撚り数を上げた場合
、伸度は増大するもののモジュラスが著しく低下するだ
けでなく、すだれ織物にこのような高い撚りのコードを
耳部に挿入した場合、コードがキンクし、すだれ織物の
平坦性を著しく悪化し、作業性を著しく阻害するだけで
なく結果的に平坦性の悪化によりタイヤの均一性も悪化
するという問題がある。The elongation of this overlapped part (hereinafter referred to as the splice part) under a constant load is significantly lower than the elongation of the non-overlapped part under the same load, so when the tire is filled with air after vulcanization, In particular, splices with low elongation are depressed in the tire sidewall portion, and other portions of the sidewall portion are bulged, resulting in an unevenness phenomenon, reducing the uniformity of the tire. To solve these problems, conventional textile materials,
In other words, when polyester, nylon, etc. are used for the carcass, there are methods of inserting heat-relaxed cords with high elongation into the cords of the blind selvedges, or cords with a greater number of twists than the cords of the blind body, and similarly high elongation. A method of inserting the . However, as mentioned above, aramid fibers have a molecular structure that is mostly aromatic, so their heat shrinkability is O (zero), and it is virtually impossible to increase their elongation through the heat relaxation treatment described above. Furthermore, since the molecules are rigid and have an extremely high modulus, increasing the number of twists within the usable range will only slightly improve elongation, and furthermore, if the number of twists is significantly increased, elongation will increase. Although the strength increases, the modulus not only decreases markedly, but if such a highly twisted cord is inserted into the selvedge of a blind fabric, the cord will kink, significantly worsening the flatness of the blind fabric and reducing workability. There is a problem that not only does this significantly hinder the tire uniformity but also the flatness deteriorates as a result.
本発明は、アラミド繊維をラジアルタイヤのカーカス層
に用いた場合の前記不具合を解決し、タイヤのカーカス
層に用いた場合に特にタイヤサイドウオール部の均一性
に優れたラジアルタイヤとなり得るタイヤ用すだれ織物
を提供することを目的とする。The present invention solves the above-mentioned problems when aramid fibers are used in the carcass layer of a radial tire. The purpose is to provide textiles.
このため、本発明は、アラミド繊維タイヤコードすだれ
織物の両耳部に、アラミド繊維と６６ナイロン繊維又は
ポリエステル繊維とを撚り合わせたコードを挿入してな
り、前記撚り合わせたコードが前記すだれ織物のコード
のｌ ｋｇ時の伸びに対し１．２〜２．０倍の伸度を有
することを特徴とするタイヤ用すだれ織物を要旨とする
ものである。Therefore, in the present invention, cords made by twisting aramid fibers and 66 nylon fibers or polyester fibers are inserted into both ends of the aramid fiber tire cord blind fabric, and the twisted cords are connected to the blind fabric. The object of the present invention is to provide a tire blind fabric characterized by having an elongation that is 1.2 to 2.0 times the elongation of the cord per kg.
以下、本発明の構成につき詳しく説明する。Hereinafter, the configuration of the present invention will be explained in detail.
本発明で用いるアラミド繊維タイヤコードすだれ織物と
は、分子構造のほとんどが芳香族環とそれを結合するア
ミド結合からなる引張強度１５ｇ／ｄ以上、引張弾性率
３００ｇ／ｄ以上のアラミド繊維（例えば、デュポン社
製ケプラー、奇人社製テクノーラ、エンカ社製トワロン
）に２０〜５０回／１０ｃｍの撚りを加えてコードとな
し、タテ糸打ち込み本数２０〜７０本／ ５ ａｍの密
度ですだれ状に織った織物である。The aramid fiber tire cord blind fabric used in the present invention is an aramid fiber whose molecular structure is mostly composed of aromatic rings and amide bonds connecting them, and has a tensile strength of 15 g/d or more and a tensile modulus of 300 g/d or more (for example, DuPont's Kepler, Kijinsha's Technora, Enca's Twaron) were twisted 20 to 50 times/10cm to form a cord, and woven into a webbing shape with a density of 20 to 70 warp threads/5 am. It is a textile.
アラミド繊維とナイロン６６繊維またはポリエステル繊
維とを撚り合わせたコードとは、すだれ本体のアラミド
繊維コードの％以下のデニールの少なくとも１本のアラ
ミド繊維束と同様のナイロン６６繊維束またはポリエス
テル繊維束にそれぞれ下撚りを加えた後、さらにアラミ
ド繊維下撚りコードとナイロン６６繊維下撚りコードま
たはポリエステル繊維下撚りコードを合わせて上撚りコ
ードとしたものである。ここで撚り数は、上記伸度範囲
となるよう適宜設定される。A cord made by twisting aramid fibers and nylon 66 fibers or polyester fibers means at least one aramid fiber bundle with a denier of % or less of the aramid fiber cord of the blind body, and a similar nylon 66 fiber bundle or polyester fiber bundle, respectively. After adding the first twist, the aramid fiber first twist cord and the nylon 66 fiber first twist cord or the polyester fiber first twist cord are combined to form a second twist cord. Here, the number of twists is appropriately set so as to fall within the above elongation range.
ここで、ナイロン６６繊維またはポリエステル繊維を用
いる理由は、その融点が高いこと、また、通常用いられ
るアラミド繊維の接着処理方法で充分な接着が得られる
ことによる。本発明では、すだれ織物の両耳部にこのコ
ードを２〜１０本挿入する。The reason why nylon 66 fiber or polyester fiber is used here is that it has a high melting point and that sufficient adhesion can be obtained by a commonly used adhesion treatment method for aramid fiber. In the present invention, 2 to 10 of these cords are inserted into both ears of the blind fabric.
このコードは、すだれ織物のコードの１ ｋｇ時の伸び
に対し１．２〜２．０倍の伸度を有する。１．２倍未満
の場合、スプライス部での凹現象は解消されず、一方、
２．０倍超では伸度が大きすぎるため逆にスプライス部
で凸現象が発生する。従って、１．２〜２．０倍の範囲
の伸びに抑えることが必要である。This cord has an elongation that is 1.2 to 2.0 times the elongation at 1 kg of the cord of blind fabric. If it is less than 1.2 times, the concavity phenomenon at the splice part will not be eliminated;
If it exceeds 2.0 times, the elongation is too large, and conversely, a convex phenomenon occurs at the splice portion. Therefore, it is necessary to suppress the elongation to a range of 1.2 to 2.0 times.
以下、実施例を示す。Examples are shown below.
〈実施例１〉
アラミド繊維としてデュポン社ケブラー１０００ｄを用
い、６６ナイロン繊維として８４０ｄを、ポリエステル
繊維として１０００ｄを用いた。ケブラー１０００ｄに
所定の下撚りを加えたものを２本準備し、さらに６６ナ
イロン繊維８４０ｄに所定の下撚りを加えたもの、１０
００ｄポリエステル繊維に所定の下撚りを加えたものを
各々１本準備し、ケブラー１０００ｄ下撚りコード２本
と６６ナイロン８４０ｄ下撚りコードを合わせ上撚りを
加え、１本のコードを得た。また、同様にポリエステル
１０００ｄ下撚りコード１本とケプラー１０００ｄ下撚
りコード２本を合わせ上撚りを加えコード１本を得た。<Example 1> DuPont Kevlar 1000d was used as the aramid fiber, 840d was used as the 66 nylon fiber, and 1000d was used as the polyester fiber. Two pieces of Kevlar 1000d with a pre-twisted pre-twist were prepared, and 10 pieces were prepared with a pre-twisted 66 nylon fiber 840d.
One 00d polyester fiber with a predetermined pre-twist was prepared, two Kevlar 1000d pre-twisted cords and 66 nylon 840d pre-twisted cord were combined and final twisted to obtain one cord. Similarly, one polyester 1000d pre-twisted cord and two Kepler 1000d pre-twisted cords were combined and final twisted to obtain one cord.
同様にして撚り数を変えて、種々の伸度を有するコード
を作成した。対比としてケプラー１５００ｄを用い下撚
り数、上撚り数が各々６０ Ｘ ６０．３５×３５のコ
ードを作成した。これらコードに下記表１に示すエポキ
シ樹脂液を１重量％付着させ、熱処理を施した後、さら
に下記表２に示すレゾルシン・ホルマリンゴムラテック
ス混合液を６重量％付着させ、熱処理を施した。熱処理
時の温度とコードに加えたテンションはいずれも同じで
、下記表３に示す通りである。このようにして得られた
コードａＭ−ｇの物性を表３に示す。Cords having various elongations were created by changing the number of twists in the same manner. As a comparison, a cord with the number of first twists and the number of final twists of 60 x 60.35 x 35 was created using Kepler 1500d. After 1% by weight of the epoxy resin liquid shown in Table 1 below was applied to these cords and heat treated, 6% by weight of the resorcinol/formalin rubber latex mixture shown in Table 2 below was further applied and heat treated. The temperature during heat treatment and the tension applied to the cord were all the same and are as shown in Table 3 below. Table 3 shows the physical properties of the code aM-g thus obtained.
表 １
水 ８５．０ ｌｉ量部１０χＮａＯ
Ｈ水溶液 １．０重量部２−ピロリドン
１０．０重量部５χジオクチルスルホ
２．０重量部コハク酸ソーダ水溶液
計 １００．０重量部（注）シェル社
製、エポキシ樹脂。Table 1 Water 85.0 li parts 10χNaO
H aqueous solution 1.0 parts by weight 2-pyrrolidone
10.0 parts by weight 5χ dioctyl sulfo
2.0 parts by weight Sodium succinate aqueous solution 100.0 parts by weight (Note) Epoxy resin manufactured by Shell.
グリセロールジグリシジルエーテル。Glycerol diglycidyl ether.
ｌ−−１
水 ５０．９重量部
レゾルシン ２．２重量部３７χホルマ
リン ３．２重量部ｌＯχＮａＯＨ水溶液
０．６重量部４０χ ビニピリジン・スチレ
ン・ ４１．７ ｆｆ１１部ブタジ
ェン共重合ゴムラテックス
計 １００．０重量部〈実施例２〉
すだれ本体コードとして、表３のｇの未処理コードを用
い、また、すだれ両耳部に表３の３〜ｇの未処理コード
を各々４本ずつ挿入したすだれ織物Ａ−Ｇを作成した。l--1 Water 50.9 parts by weight Resorcinol 2.2 parts by weight 37x Formalin 3.2 parts by weight lOx NaOH aqueous solution
0.6 parts by weight 40χ Vinypyridine styrene 41.7 ff 11 parts Butadiene copolymer rubber latex Total 100.0 parts by weight <Example 2> The untreated cord of g in Table 3 was used as the blind body cord, and the blind Blind fabrics A to G were prepared in which four untreated cords of 3 to g in Table 3 were inserted in each of the selvedges.
尚、すだれ織物のタテ糸打ち込み本数は、５０本／ ５
ｃｔａである。すだれ織物のヨコ糸は伸度の大きいオ
ルボブラスト社製のオルボブラスト糸を用い、４．０本
１５１の打ち込みとした。このすだれを実施例１と同様
の熱処理を施した後、ラジアルタイヤのカーカス材とし
て用いた。タイヤサイズは、１９５／７０１１Ｒ１４で
あり、カーカス層は１層とした。得られたタイヤを５Ｖ
２ＪＪｘ１４、空気圧１．９ ｋｇ／ ｍにてセットし
、タイヤサイドウオール部の凹凸現象について評価した
。結果を下記表４に示す。In addition, the number of warp threads for blind fabric is 50/5.
It is cta. The weft yarn of the blind fabric was Orbo Blast yarn manufactured by Orbo Blast Co., Ltd., which has high elongation, and was set at 4.0 yarns and 151 yarns. After this blind was subjected to the same heat treatment as in Example 1, it was used as a carcass material for a radial tire. The tire size was 195/7011R14, and the carcass layer was one layer. The obtained tire is 5V
The tire was set at 2JJx14 and an air pressure of 1.9 kg/m, and the unevenness of the tire sidewall was evaluated. The results are shown in Table 4 below.
但し、凹凸の評価は次の方法に従った。タイヤサイドウ
オール部に１０鳳−φの金属製ローラーを回転させて、
タイヤを１周し、フレ方式で差動トランスを使用して凹
凸度合を評価する。サイドウオール部２５ｍ間隔毎に凹
凸差を検出し、タイヤ全周で最も凹凸差が大きい値をそ
のサイドウオール部凹凸値とする。尚、表４の値は１０
０本のタイヤの平均値を基準タイヤを１００として指数
化したもので、数値の小さい方が、均一性に優れている
ことを示す。以上、表４に示すように、本体コードに対
し１ ｋｇ時の伸度が１．２〜２．０倍の範囲にあるコ
ードｂ、ｃ、ｅをすだれ耳部に用いたすだれ織物Ｂ、Ｃ
，Ｅを用いたタイヤのサイドウオール部の凹凸が他に比
較し、明らかに優れていることがわかる。尚、表４に示
すＦのコードは、表３に示す通り、所望の伸度にあるに
もかかわらずタイヤのサイド凹凸現象が低減されてない
。Ｆすだれを用いたタイヤのスプライス部を解体した結
果、耳部のコード密度が他の部分より密になっており、
それが改善されていない原因である。これは、すだれ織
物を熱処理したときに、耳部コードが本体コードより大
幅に高い撚りのため、耳部コードが前記したようにキン
クを起こし、すだれの平坦性を悪化させたためである。However, the unevenness was evaluated according to the following method. Rotate a 10-φ metal roller on the tire sidewall,
The tire is rotated once and the degree of unevenness is evaluated using a differential transformer using the run-out method. The difference in unevenness of the sidewall portion is detected every 25 m interval, and the value with the largest difference in unevenness over the entire circumference of the tire is taken as the unevenness value of the sidewall portion. In addition, the value in Table 4 is 10
The average value of 0 tires is expressed as an index with the reference tire as 100, and the smaller the value, the better the uniformity is. As shown in Table 4, the blind fabrics B and C are made using cords b, c, and e, which have elongation at 1 kg that is 1.2 to 2.0 times that of the main body cord, for the blind selvedges.
It can be seen that the unevenness of the sidewall portion of the tire using tires made with . As shown in Table 3, code F shown in Table 4 does not reduce the tire side unevenness phenomenon even though it has the desired elongation. As a result of disassembling the splice part of a tire using F blinds, the cord density at the ear part was denser than in other parts.
This is the reason why it has not been improved. This is because when the blind fabric was heat-treated, the selvedge cords were twisted much higher than the main body cords, causing the selvage cords to kink as described above, which deteriorated the flatness of the blind.
また、伸度が大きすぎるａコードを用いた場合、スプラ
イス部が凸現象となり、基準に対しむしろ悪化している
。伸度が低いｄコードを用いた場合は、はとんど改良さ
れていない。Furthermore, when an A-cord with too high elongation is used, the splice portion becomes convex, which is actually worse than the standard. When using a d-cord with low elongation, there is little improvement.
人−↓ タイヤ評価結果
〔発明の効果〕
以上説明したように本発明によれば、タイヤサイドウオ
ール部の不均一性を十分に解消することが可能となる。Human-↓ Tire Evaluation Results [Effects of the Invention] As explained above, according to the present invention, it is possible to sufficiently eliminate the non-uniformity of the tire sidewall portion.
Claims (1)
ミド繊維と６６ナイロン繊維又はポリエステル繊維とを
撚り合わせたコードを挿入してなり、前記撚り合わせた
コードが前記すだれ織物のコードの１ｋｇ時の伸びに対
し１．２〜２．０倍の伸度を有することを特徴とするタ
イヤ用すだれ織物。A cord made by twisting aramid fiber and 66 nylon fiber or polyester fiber is inserted into both ears of the aramid fiber tire cord blind fabric, and the twisted cord has an elongation of the cord of the blind fabric at 1 kg. 1. A blind fabric for tires characterized by having an elongation of 1.2 to 2.0 times the elongation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61298870A JPS63159543A (en) | 1986-12-17 | 1986-12-17 | Tire fabric for tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61298870A JPS63159543A (en) | 1986-12-17 | 1986-12-17 | Tire fabric for tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63159543A true JPS63159543A (en) | 1988-07-02 |
Family
ID=17865252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61298870A Pending JPS63159543A (en) | 1986-12-17 | 1986-12-17 | Tire fabric for tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63159543A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008184216A (en) * | 2007-01-31 | 2008-08-14 | Teijin Fibers Ltd | Flexible container sheet, and flexible container |
| CN103498231A (en) * | 2013-09-29 | 2014-01-08 | 亚东工业（苏州）有限公司 | Manufacturing method for aramid fiber/chinlon composite cord for aircraft tires |
| US8794283B2 (en) | 2009-10-05 | 2014-08-05 | Bridgestone Corporation | Run-flat tire |
| WO2018105717A1 (en) * | 2016-12-09 | 2018-06-14 | 横浜ゴム株式会社 | Pneumatic tire |
| RU2749204C1 (en) * | 2019-12-12 | 2021-06-07 | Дзе Гудйеар Тайр Энд Раббер Компани | Breaker construction for tire |
-
1986
- 1986-12-17 JP JP61298870A patent/JPS63159543A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008184216A (en) * | 2007-01-31 | 2008-08-14 | Teijin Fibers Ltd | Flexible container sheet, and flexible container |
| US8794283B2 (en) | 2009-10-05 | 2014-08-05 | Bridgestone Corporation | Run-flat tire |
| JP5602750B2 (en) * | 2009-10-05 | 2014-10-08 | 株式会社ブリヂストン | Run flat tire |
| CN103498231A (en) * | 2013-09-29 | 2014-01-08 | 亚东工业（苏州）有限公司 | Manufacturing method for aramid fiber/chinlon composite cord for aircraft tires |
| WO2018105717A1 (en) * | 2016-12-09 | 2018-06-14 | 横浜ゴム株式会社 | Pneumatic tire |
| JP2018094979A (en) * | 2016-12-09 | 2018-06-21 | 横浜ゴム株式会社 | Pneumatic tire |
| RU2708139C1 (en) * | 2016-12-09 | 2019-12-04 | Дзе Йокогама Раббер Ко., Лтд. | Pneumatic tire |
| RU2749204C1 (en) * | 2019-12-12 | 2021-06-07 | Дзе Гудйеар Тайр Энд Раббер Компани | Breaker construction for tire |
| US11167594B2 (en) | 2019-12-12 | 2021-11-09 | The Goodyear Tire & Rubber Company | Belt structure for a tire |
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