JP2005154963A - Synthetic fiber cord fabric for rubber reinforcement and pneumatic tire produced by using the same - Google Patents
Synthetic fiber cord fabric for rubber reinforcement and pneumatic tire produced by using the same Download PDFInfo
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- JP2005154963A JP2005154963A JP2003397033A JP2003397033A JP2005154963A JP 2005154963 A JP2005154963 A JP 2005154963A JP 2003397033 A JP2003397033 A JP 2003397033A JP 2003397033 A JP2003397033 A JP 2003397033A JP 2005154963 A JP2005154963 A JP 2005154963A
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- synthetic fiber
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- weft
- rubber reinforcement
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- 239000004744 fabric Substances 0.000 title claims abstract description 36
- 229920002994 synthetic fiber Polymers 0.000 title claims abstract description 30
- 239000012209 synthetic fiber Substances 0.000 title claims abstract description 30
- 229920001971 elastomer Polymers 0.000 title claims abstract description 18
- 239000005060 rubber Substances 0.000 title claims abstract description 18
- 230000002787 reinforcement Effects 0.000 title claims abstract description 11
- 238000002844 melting Methods 0.000 claims abstract description 21
- 230000008018 melting Effects 0.000 claims abstract description 21
- 229920000642 polymer Polymers 0.000 claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 239000012779 reinforcing material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 11
- 238000000465 moulding Methods 0.000 abstract description 5
- 238000007493 shaping process Methods 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 9
- -1 polyethylene terephthalate Polymers 0.000 description 8
- 230000003014 reinforcing effect Effects 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229920000126 latex Polymers 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 239000002759 woven fabric Substances 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 239000012948 isocyanate Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 3
- 229960001755 resorcinol Drugs 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 229920002292 Nylon 6 Polymers 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000012783 reinforcing fiber Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Tires In General (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Woven Fabrics (AREA)
Abstract
Description
本発明は、ゴム補強用合成繊維すだれ織物及びそれを用いた空気入りタイヤに関するものであり、さらに詳しくは、空気入りタイヤのユニフォミティーの向上に優れた効果を奏するゴム補強用合成繊維すだれ織物及びそれを用いた空気入りタイヤに関する。 TECHNICAL FIELD The present invention relates to a rubber reinforcing synthetic fiber interwoven fabric and a pneumatic tire using the same, and more specifically, a rubber reinforcing synthetic fiber interwoven fabric exhibiting an effect of improving the uniformity of the pneumatic tire and The present invention relates to a pneumatic tire using the same.
ポリアミド繊維、ポリエステル繊維、ポリビニールアルコール繊維或いは全芳香族ポリアミド繊維は、高強度、高弾性の特性を有しており、寸法安定性にも優れていることから、種々の産業用補強材、とくにタイヤ、ベルトおよびホースなどのゴム補強用繊維として広く使用されている。 Polyamide fibers, polyester fibers, polyvinyl alcohol fibers or wholly aromatic polyamide fibers have high strength and high elasticity and are excellent in dimensional stability. It is widely used as a rubber reinforcing fiber for tires, belts and hoses.
この際、上記の補強用繊維は、例えばポリエステル繊維を例にとると、特開２０００−３２８３８７号公報、或いは特開２０００−１０３２０４号公報に開示される如く、１６７０ｄｔｅｘ或いは１１００ｄｔｅｘの繊度を有するマルチフィラメント糸に下撚及び上撚を施して撚糸コードとし、この撚糸コードを経糸として１０００〜１５００本整経して並べ、これら経糸がばらけないように、綿やレーヨン等の紡績糸或いは合成繊維糸などからなる緯糸を打ち込んで緯糸密度が３〜５本／５ｃｍとなるように製織して得られる、いわゆるすだれ織物の形で、タイヤ、ベルト及びホースなどのゴム補強用途に使用されている。 In this case, the reinforcing fiber is a multifilament having a fineness of 1670 dtex or 1100 dtex as disclosed in, for example, Japanese Unexamined Patent Application Publication No. 2000-328387 or Japanese Unexamined Patent Application Publication No. 2000-103204, taking polyester fiber as an example. Spun yarn or synthetic fiber yarn such as cotton and rayon so that the yarn is twisted and top-twisted to form a twisted yarn cord, and this twisted yarn cord is warped and arranged at 1000 to 1500 warps. It is used for rubber reinforcement applications such as tires, belts, hoses, etc. in the form of so-called interwoven fabrics obtained by weaving the wefts made of and the like and weaving so that the weft density is 3-5 yarns / 5 cm.
上記のすだれ織物は、接着剤を付与され、乾燥、熱処理工程を経た後に、各種ゴム中に埋め込まれるが、その際、特に空気入りタイヤの補強に使用する場合は、成型されたタイヤの形状を安定させる、即ち、ユニフォミティーを向上させるため、経糸であるコードが一定の間隔になるように配列する必要がある。 The above weave fabric is given an adhesive, dried and heat-treated and then embedded in various rubbers. At that time, especially when used for reinforcing a pneumatic tire, the shape of the molded tire is used. In order to stabilize, that is, to improve uniformity, it is necessary to arrange the warp cords so that they are at a constant interval.
しかしながら、従来のようなすだれ織物を用いた場合には、タイヤ成型工程において円環状に成型する際、すだれ織物の経糸は、緯糸の初期引張抵抗力によって、密度が不均一になり易く、タイヤのユニフォミティーが低下するという問題があった。 However, when a conventional weave fabric is used, the warp yarn of the weave fabric is likely to have a non-uniform density due to the initial tensile resistance of the weft when the tire is formed into an annular shape in the tire molding process. There was a problem that uniformity deteriorated.
本発明の目的は、上記従来技術の有する問題点を解決し、すだれ織物に接着剤を付与する際、経糸に容易に融着することが可能な低融点の緯糸を使用することにより、タイヤ成型工程において円環状に成型する際、経糸間の空間の増加とともに緯糸が均一に伸張することが可能で、空気入りタイヤのユニフォミティーの向上に優れた効果を奏するゴム補強用合成繊維すだれ織物及びそれを用いた空気入りタイヤを提供することにある。 The object of the present invention is to solve the above-mentioned problems of the prior art and to use a low-melting-point weft that can be easily fused to a warp when applying an adhesive to a braided fabric. When forming into an annular shape in the process, the weft yarn can be stretched uniformly with the increase in the space between the warp yarns, and the synthetic fiber weave fabric for rubber reinforcement which has the effect of improving the uniformity of the pneumatic tire and the same It is to provide a pneumatic tire using the tire.
本発明者らは上記目的を達成するために鋭意検討した結果、すだれ織物の緯糸が、経糸よりも低い融点を有するポリマー成分を含み、溶融及び／又は軟化により経糸と接着されているとき、所望のすだれ織物が得られることを究明し、本発明に到達した。 As a result of intensive investigations to achieve the above object, the present inventors have found that when the weft of the weave fabric includes a polymer component having a melting point lower than that of the warp and is bonded to the warp by melting and / or softening, The present inventors have found that a bamboo woven fabric can be obtained and have reached the present invention.
かくして本発明によれば、下撚及び上撚を施された合成繊維からなる経糸と、５０％以上の伸度を有する緯糸とがすだれ織りされてなるすだれ織物であって、該緯糸が、経糸を構成する合成繊維のポリマー成分よりも低い融点を有するポリマー成分を含んでおり、溶融及び／又は軟化により経糸と接着されていることを特徴とするゴム補強用合成繊維すだれ織物が提供される。 Thus, according to the present invention, a warp woven fabric in which a warp made of synthetic fibers subjected to a lower twist and an upper twist and a weft having an elongation of 50% or more is interwoven, and the weft is a warp. A synthetic fiber weave fabric for reinforcing rubber is provided, which contains a polymer component having a melting point lower than that of the synthetic fiber constituting the fiber and is bonded to the warp by melting and / or softening.
また、本発明によれば、上記の合成繊維すだれ織物を補強材として用いてなることを特徴とする空気入りタイヤが提供される。 Moreover, according to the present invention, there is provided a pneumatic tire characterized by using the above-mentioned synthetic fiber blind fabric as a reinforcing material.
本発明によれば、タイヤ成型工程において円環状に成型する際、経糸間の空間の増加とともに緯糸が均一に伸張することが可能なゴム補強用合成繊維すだれ織物が得られ、空気入りタイヤのユニフォミティーの向上に優れた効果を奏する。 According to the present invention, when forming into an annular shape in the tire molding process, a rubber reinforcing synthetic fiber weave fabric is obtained in which the wefts can be uniformly stretched with an increase in the space between the warp yarns. It has an excellent effect on improving Mitty.
本発明で使用する合成繊維は、ナイロン６、ナイロン６６に代表されるポリアミド、ポリエチレンテレフタレート、ポリブチレンテレフタレートに代表されるポリエステル、及びポリビニルアルコールからなるポリマーを常法により紡糸、延伸することにより得られる繊維である。 The synthetic fiber used in the present invention is obtained by spinning and stretching a polymer composed of polyamide represented by nylon 6, nylon 66, polyethylene terephthalate, polyester represented by polybutylene terephthalate, and polyvinyl alcohol by a conventional method. Fiber.
上記の合成繊維は、高強力化を図るために、高粘度のポリマーを用い、高延伸倍率で延伸されたものであることが望ましい。 The synthetic fiber is desirably a high-viscosity polymer that has been drawn at a high draw ratio in order to increase the strength.
そして、本発明のすだれ織物を得るには、先ず上記の合成繊維に、下撚および上撚を施し、これを経糸として、この経糸を１０００本〜１５００本並べ、これらの経糸がばらけないように緯糸で製織することにより得ることができる。また、該すだれ織物の幅は１４０〜１６０ｃｍで、長さは８００〜２５００ｍであり、緯糸は２．０〜５．０本／５ｃｍ間隔で打ち込まれていることが好ましい。 And in order to obtain the textile fabric of the present invention, first, the above-mentioned synthetic fiber is subjected to a lower twist and an upper twist, and this is used as a warp to arrange 1000 to 1500 warps so that these warps are not scattered. It can be obtained by weaving with weft. The width of the weave fabric is 140 to 160 cm, the length is 800 to 2500 m, and the wefts are preferably driven at intervals of 2.0 to 5.0 / 5 cm.
本発明においては、上記のすだれ織物の緯糸が、５０％以上の伸度を有し、経糸を構成する合成繊維のポリマー成分よりも低い融点を有するポリマー成分を含んでいることが肝要である。このように、すだれ織物を構成する緯糸が低い融点を有していると、後述の、すだれ織物に接着剤を付与する際の熱処理工程において、緯糸が経糸に容易に融着することが可能となり、タイヤ成型工程において円環状に成型する際、たとえ経糸に不均一な力が加わったとしても織物が均一に伸長することができるので、タイヤのユニフォミティーを向上させることができる。 In the present invention, it is important that the weft of the above weave fabric includes a polymer component having an elongation of 50% or more and a melting point lower than that of the synthetic fiber constituting the warp. In this way, when the wefts constituting the weave fabric have a low melting point, it becomes possible for the wefts to be easily fused to the warp in the heat treatment step when the adhesive is applied to the weave fabric described later. When the tire is formed into an annular shape in the tire molding process, even if a non-uniform force is applied to the warp, the woven fabric can be stretched uniformly, so that the tire uniformity can be improved.
上記緯糸の伸度が５０％未満の場合は、織物が十分に拡張することができなくなるので、タイヤのユニフォミティーを向上させることができない。 If the weft elongation is less than 50%, the woven fabric cannot be sufficiently expanded, so that the tire uniformity cannot be improved.
上記緯糸には、融点の異なる２種類以上のポリマー成分が含まれていても良い。具体的には、２種類以上の異なるポリマーから別々に製造された糸を、合糸、エアー交絡、合撚およびカバーリングなどのように後加工によって組み合わせたり、紡糸時に２種類以上のポリマーを同一口金で紡糸するコスパンヤーンおよび同一ノズルから２種類以上のポリマーを吐出するコンジュゲートヤーンなどが挙げられる。その際の構成比は特に限定されないが、好ましくは融点の低いポリマーが２０％から８０％重量％となる範囲である。 The weft may contain two or more polymer components having different melting points. Specifically, yarns manufactured separately from two or more different types of polymers are combined by post-processing such as combined yarn, air entanglement, twisting and covering, or two or more types of polymers are the same during spinning Examples thereof include a cospun yarn that is spun by a die and a conjugate yarn that discharges two or more types of polymers from the same nozzle. The constitutional ratio at that time is not particularly limited, but is preferably in the range of 20% to 80% by weight of the polymer having a low melting point.
但し、この場合、経糸を構成する合成繊維のポリマー成分よりも低い融点を有するポリマー成分は緯糸の表面近傍に顕在している必要がある。 However, in this case, the polymer component having a lower melting point than the polymer component of the synthetic fiber constituting the warp needs to appear in the vicinity of the surface of the weft.
次いで、上記のすだれ織物には、接着剤が付与されることが好ましい。付与される接着剤としては、エポキシ化合物、イソシアネート化合物、ハロゲン化フェノール化合物及びレゾシンポリサルファイド化合物などを含む接着剤が挙げられ、具体的には、第１処理液としてエポキシ化合物、ブロックイソシアネ−ト、ラテックスの混合液を付与し、熱処理後に第２処理液としてレゾルシンとホルムアルデヒドとの初期縮合物およびゴムラテックスからなる液（ＲＦＬ液）を付与し、さらに熱処理する方法が好ましく例示される。 Next, it is preferable that an adhesive is applied to the interwoven fabric. Examples of the adhesive to be applied include an adhesive including an epoxy compound, an isocyanate compound, a halogenated phenol compound, and a resorcin polysulfide compound. Specifically, as the first treatment liquid, an epoxy compound and a block isocyanate are used. A method of applying a latex mixed solution, applying a liquid (RFL liquid) composed of an initial condensate of resorcin and formaldehyde and a rubber latex as the second processing liquid after the heat treatment, and further heat-treating is preferably exemplified.
接着剤が付与された織物の乾燥加熱条件は、例えばナイロン６繊維の場合は１７０〜２１５℃で３０〜９０秒、好ましくは１９０〜２１０℃で５０〜７０秒、ナイロン６６繊維の場合は２００〜２４０℃、３０〜９０秒、好ましくは２１０〜２３０℃で５０〜７０秒がよい。また、ポリエテルの場合は２００〜２５０℃で３０〜１５０秒、好ましくは２１０〜２３０℃で処理される。いずれの場合にも約３％延伸が施される。 For example, in the case of nylon 6 fiber, the drying and heating conditions of the fabric provided with the adhesive are 170 to 215 ° C. for 30 to 90 seconds, preferably 190 to 210 ° C. for 50 to 70 seconds, and in the case of nylon 66 fiber, 200 to 200 ° C. 240 degreeC, 30 to 90 second, Preferably it is 210 to 230 degreeC and 50 to 70 second is good. In the case of polyether, it is treated at 200 to 250 ° C. for 30 to 150 seconds, preferably 210 to 230 ° C. In either case, about 3% stretching is applied.
以下、実施例を挙げて本発明の構成および効果をさらに詳細に説明する。尚、実施例における各物性は下記方法により求めたものである。 Hereinafter, an example is given and the composition and effect of the present invention are explained in detail. In addition, each physical property in an Example is calculated | required by the following method.
（１）緯糸の切断伸度
ＪＩＳ Ｌ １０１３ ７．１０に準じ、緯糸の伸度を測定した。
(1) Weft cut elongation The weft elongation was measured according to JIS L 1013 7.10.
（２）タイヤのユニフォミティー
ＪＡＳＯＣ６０７（自動車用タイヤのユニフォミティー試験方法）に準拠して、リム（１６×６．５ＪＪ）、内圧（２００ｋＰａ）、荷重（５．５０ｋＮ）の条件下における試供タイヤのＲＦＶ（ラテラルフォースバリエーション）を測定し、比較例１のタイヤを１００とした場合の指数で相対評価した。数値が小さいほどユニフォミティーに優れていると言える。
(2) Tire uniformity According to JASOC607 (method for testing the uniformity of automobile tires), a sample tire under conditions of rim (16 × 6.5JJ), internal pressure (200 kPa), and load (5.50 kN) RFV (Lateral Force Variation) was measured, and relative evaluation was performed using an index when the tire of Comparative Example 1 was set to 100. It can be said that the smaller the number, the better the uniformity.
［実施例１］
巻取速度４０００ｍ／分で溶融紡糸した破断伸度１２２％、破断強力３２５ｃＮ、繊度１８５デシテックス／２４フィラメントのポリエチレンテレフタレート未延伸糸を、長さ１ｍ、温度１７０℃のヒーター中を供給速度１４９ｍ／分、オーバーフィード率２０％で通過させて熱処理した。
[Example 1]
A polyethylene terephthalate unstretched yarn having a breaking elongation of 122%, a breaking strength of 325 cN, and a fineness of 185 dtex / 24 filaments melt melt-spun at a winding speed of 4000 m / min is fed into a heater with a length of 1 m and a temperature of 170 ° C. Then, it was heat treated by passing it at an overfeed rate of 20%.
該熱処理糸と、繊度１１０デシテックスの、ユニチカ（株）製の低融点ナイロン「フロールＭ」（融点１２５℃）、とをエアー交絡機によって合糸し、伸度が６２％の緯糸とした。 The heat treated yarn and a low melting point nylon “Flor M” (melting point: 125 ° C.) manufactured by Unitika Co., Ltd. having a fineness of 110 dtex were combined by an air entanglement machine to obtain a weft having an elongation of 62%.
次に、繊度１６７０デシテックスのポリエチレンテレフタレートマルチフィラメント２本（融点２５５℃）を下撚数４０回／１０ｃｍ、上撚数４０回／１０ｃｍの撚数で撚糸したコ−ドを、総本数１５００本引揃えて経糸とし、これに上記エアー交絡機によって得た緯糸を２０ｍｍ間隔でばらけないように打ち込んだ生すだれ反を得た。 Next, a total of 1500 cords are drawn, in which two polyethylene terephthalate multifilaments having a fineness of 1670 dtex (melting point: 255 ° C.) are twisted with a twist number of 40 turns / 10 cm and a twist number of 40 turns / 10 cm. A warp was obtained by placing the wefts obtained by the air entanglement machine so as not to be scattered at intervals of 20 mm.
上記の生すだれ反を、エポキシ化合物、ブロックイソシアネ−ト化合物およびゴムラテックスからなる混合液（第１浴処理液）に浸漬した後、１３０℃で１００秒間乾燥し、続いて２４０℃で４５秒間延伸熱処理した。 The raw weave is immersed in a mixed solution (first bath treatment solution) composed of an epoxy compound, a block isocyanate compound and a rubber latex, dried at 130 ° C. for 100 seconds, and subsequently at 240 ° C. for 45 seconds. Stretch heat treatment was performed.
さらに、上記第１処理浴で処理した生すだれ反を、レゾルシン・ホルマリン・ゴムラテックス（ＲＦＬ）からなる第２処理液に浸漬した後、１００℃で１００秒間乾燥し、続いて２４０℃で６０秒間延伸熱処理、リラックス熱処理を施した。 Further, the raw bamboo weave treated in the first treatment bath is immersed in a second treatment solution made of resorcin / formalin / rubber latex (RFL), dried at 100 ° C. for 100 seconds, and then at 240 ° C. for 60 seconds. Stretch heat treatment and relaxation heat treatment were performed.
処理反を顕微鏡観察したところ、経糸と緯糸のナイロン部分が溶融により接着されていた。また経糸および緯糸の密度には斑はなかった。 A microscopic observation of the treated fabric revealed that the nylon portion of the warp and the weft was bonded by melting. Moreover, there were no spots in the density of the warp and the weft.
このゴム補強用合成繊維すだれ織物を補強材として用いて、常法により空気入りタイヤ（タイヤサイズ２２５／６０Ｒ１６）を製造した。この際、成型したカーカスを膨張させる工程で緯糸が経糸の間隔の拡がりに追従して拡がり、経糸は均一に配列していた。また、得られたタイヤのユニフォミティーは９５と良好であった。 A pneumatic tire (tire size 225 / 60R16) was produced by a conventional method using this rubber reinforcing synthetic fiber braid fabric as a reinforcing material. At this time, in the process of expanding the molded carcass, the wefts expanded following the expansion of the warp spacing, and the warps were arranged uniformly. Moreover, the uniformity of the obtained tire was as good as 95.
［比較例１］
実施例１において、緯糸として、実施例１の経糸に使用したポリエチレンテレフタレートと同じ融点を有する、繊度１８５デシテックス／２４フィラメントのポリエチレンテレフタレートマルチフィラメント２本を、実施例１と同条件で合糸して得た、伸度が５４％の糸を使用した以外は実施例１と同様に実施した。
[Comparative Example 1]
In Example 1, two weft yarns having the same melting point as the polyethylene terephthalate used in the warp yarn of Example 1 and having a fineness of 185 dtex / 24 filaments were combined under the same conditions as in Example 1. The same procedure as in Example 1 was performed except that the obtained yarn having an elongation of 54% was used.
処理反を顕微鏡観察したところ、緯糸と経糸は溶融により接着されておらず、その緯糸の伸度は５４％であった。また経糸および緯糸の密度に斑が観察された。 When the processing reaction was observed with a microscope, the weft and the warp were not bonded by melting, and the elongation of the weft was 54%. Spots were observed in the density of the warp and the weft.
このゴム補強用合成繊維すだれ織物を補強材として用いて、常法により空気入りタイヤ（タイヤサイズ２２５／６０Ｒ１６）を製造した。この際、成型したカーカスを膨張させる工程で、経糸は不均一に配列していた。また、得られたタイヤのユニフォミティーは１００であった。 A pneumatic tire (tire size 225 / 60R16) was produced by a conventional method using this rubber reinforcing synthetic fiber braid fabric as a reinforcing material. At this time, the warp yarns were non-uniformly arranged in the step of expanding the molded carcass. The uniformity of the obtained tire was 100.
本発明によれば、タイヤ成型工程において円環状に成型する際、経糸間の空間の増加とともに緯糸が均一に伸張することが可能なゴム補強用合成繊維すだれ織物が得られるので、該すだれ織物をタイヤの補強用に用いれば、ユニフォミティーの向上された空気入りタイヤが得られる。 According to the present invention, when forming into an annular shape in the tire molding process, a synthetic fiber weave fabric for rubber reinforcement capable of uniformly extending the weft with an increase in the space between the warps can be obtained. When used for tire reinforcement, a pneumatic tire with improved uniformity can be obtained.
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| JP2003397033A JP2005154963A (en) | 2003-11-27 | 2003-11-27 | Synthetic fiber cord fabric for rubber reinforcement and pneumatic tire produced by using the same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008031563A (en) * | 2006-07-26 | 2008-02-14 | Bridgestone Corp | Method and device for controlling water content of organic fiber cord, and method and apparatus for producing cord for reinforcing rubber |
| WO2012105276A1 (en) * | 2011-02-04 | 2012-08-09 | 横浜ゴム株式会社 | Tire cord fabric and pneumatic tire |
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2003
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008031563A (en) * | 2006-07-26 | 2008-02-14 | Bridgestone Corp | Method and device for controlling water content of organic fiber cord, and method and apparatus for producing cord for reinforcing rubber |
| WO2012105276A1 (en) * | 2011-02-04 | 2012-08-09 | 横浜ゴム株式会社 | Tire cord fabric and pneumatic tire |
| JP5029795B1 (en) * | 2011-02-04 | 2012-09-19 | 横浜ゴム株式会社 | Tire fabrics and pneumatic tires |
| US9050857B2 (en) | 2011-02-04 | 2015-06-09 | The Yokohama Rubber Co., Ltd. | Tire cord fabric and pneumatic tire |
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