EP2188137A1 - Belt bandage for a pneumatic vehicle tire and pneumatic vehicle tire, comprising said belt bandage - Google Patents

Belt bandage for a pneumatic vehicle tire and pneumatic vehicle tire, comprising said belt bandage

Info

Publication number
EP2188137A1
EP2188137A1 EP08775065A EP08775065A EP2188137A1 EP 2188137 A1 EP2188137 A1 EP 2188137A1 EP 08775065 A EP08775065 A EP 08775065A EP 08775065 A EP08775065 A EP 08775065A EP 2188137 A1 EP2188137 A1 EP 2188137A1
Authority
EP
European Patent Office
Prior art keywords
belt
belt bandage
bandage
cord
tire
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.)
Withdrawn
Application number
EP08775065A
Other languages
German (de)
French (fr)
Inventor
Claus Van Barneveld
Günter Wahl
Carole Justine
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Reifen Deutschland GmbH
Original Assignee
Continental Reifen Deutschland GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Continental Reifen Deutschland GmbH filed Critical Continental Reifen Deutschland GmbH
Publication of EP2188137A1 publication Critical patent/EP2188137A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/22—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/0042—Reinforcements made of synthetic materials

Definitions

  • the invention relates to a belt bandage for a pneumatic vehicle tire, wherein the strength members of the belt bandage are nylon cords which are arranged substantially parallel to each other within the ply. Furthermore, the invention relates to a pneumatic vehicle tire containing such a belt bandage.
  • a radial type pneumatic vehicle tire generally has an air-impermeable inner layer, a radial carcass containing strength carriers, which extends from the zenith region of the tire over the sidewalls into the bead region and is usually anchored there by wrapping tensile bead cores, a profiled tread radially outwardly, and between the tread and the carcass arranged on belt, which is covered radially on the outside with a belt bandage.
  • the belt bandage can be formed in one or more layers and covers at least the belt edges.
  • the belt bandage usually includes parallel and substantially circumferentially extending reinforcing members in the form of cords embedded in rubber.
  • the bandage is applied in the manufacture of tires in the form of layers with embedded in an unvulcanized rubber compound reinforcing agents, which are wound on the belt or spooled as a strip.
  • the strength members are embedded in rubber by forming a family of substantially parallel filiform Reinforcements, which are usually pretreated thermally and / or for better adhesion to the embedding rubber in a conventional manner with an impregnation, in the longitudinal direction through a calender or an extruder for sheathing with the rubber mixture.
  • the tire In the case of bombing with previously used devices and in the vulcanization of the tire, the tire usually extends in the shoulder area by the survey by up to 2% and in the center region by up to 5% compared to the unvulcanized blank when the blank on a flat drum is wound.
  • the cords of the bandage are to allow a sufficient elevation in the production of the tire during the cambering and the vulcanization, so that the tire can be precisely formed. In addition, they should ensure a good high speed capability after the completion of the tire while driving.
  • nylon cords with titres greater than or equal to 940 dtex (940 ⁇ n, 1400 ⁇ n, with n greater than or equal to 1) have been known as reinforcements for the bandage.
  • a disadvantage is the tendency of the tire to the Fiatspot (booth training), a flattening of the tire contact patch, whereby the concentricity of the tire is impaired. It is also anxious to reduce the weight of a tire and thus its rolling resistance and save on the cost.
  • the present invention is based on the object to provide a belt bandage for pneumatic vehicle tires, which is inexpensive to manufacture, which nevertheless meets the requirements of a belt bandage.
  • the belt bandage is intended to give the pneumatic vehicle tire high speed capability and reduce its rolling resistance.
  • the problem is solved by the nylon cord has the construction 470 x 2 and consists of two twisted yarns of about 470 dtex.
  • a very fine 470 ⁇ 2 nylon cord is used as the strength support for a belt bandage and nevertheless the desired ones Properties of the belt bandage are obtainable in a pneumatic vehicle tire.
  • a belt bandage with 470 x 2 nylon cords can adequately absorb the forces encountered during high-speed operation.
  • the rolling resistance of the tire is improved by a reduced use of material by the fine cord, in particular by the resulting reduced compound use and the tendency to Fiatspot is reduced by the reduced nylon content.
  • the tire also has high circumferential rigidity with the fine cord of the belt bandage, which provides good high speed properties. It also allows precise shaping during tire manufacture, giving the tire good uniformity.
  • each of the two yarns of the cord with 300 to 500 t / m, preferably with 340t / m is twisted. With this number of turns, a spring-like effect of the cord is achieved, by which a sufficient elevation of the green tire is made possible in the manufacturing process.
  • the material usage of nylon is comparatively low.
  • the cord is twisted symmetrically with the same twist number but opposite direction of rotation as the yarn forming it, the cord is easy to process and has a good residual fatigue strength.
  • a radial type vehicle pneumatic tire comprising a carcass of at least one ply running around the bead cores from radially inward to radially outward, side walls, a tread and an at least single ply belt radially outwardly covered by a belt bandage, the side walls being axially adjacent or radially above of the belt ends and the belt bandage is arranged to cover at least the belt edges between the side wall and belt edge in the direction of the carcass, characterized in that the belt bandage cords as strength members made of nylon construction 470 x 2 has.
  • the cord can be advantageously developed according to the disclosure of this application.
  • the above-described reinforcement layer can also be used as a bead reinforcement in a pneumatic vehicle tire.
  • the advantage over known constructions is that it saves on material costs and on the weight of the tire.
  • the belt bandage is constructed of 470 x 2 nylon cord. Each of the two nylon yarns is S first twisted at 340 T / m and S twisted together at 340 T / m together.
  • the cord is treated rubber-friendly.
  • the strength structure described above can be used instead of the nylon cord construction 940 x 1. Especially with SOT and STB constructions no sawing effects occur on the carcass.
  • the cords of the belt bandage according to the invention have the following properties:
  • the above-described 470 ⁇ 2 nylon cord according to the invention has comparable properties to the 940 ⁇ 1 nylon cord.
  • the cord according to the invention is advantageously higher fatigue resistant.
  • the cord according to the invention can be used as a belt bandage as an alternative to the 940 x 1 cord.
  • no sawing effects occur on the carcass with the cord of the present invention, while these sawing effects were observed in a 940 x 1 belt belt bandage.
  • the inventive cord has a lower shrinkage compared to the 940 ⁇ 2 cord, which reduces flat spotting when used as a belt bandage strength member in the tire.
  • Fig.l a cross-sectional half of a passenger car tire with belt bandage
  • FIG. 2 shows a cross-sectional half of another car tire with belt bandage.
  • Fig. 1 shows a cross-sectional half of a passenger car radial tire 1 with a belt bandage 2.
  • the belt bandage 2 is arranged radially above the belt 3 as a belt cover and prevents in particular in high-speed deployment a survey of the tire 1 by the centrifugal forces occurring during driving.
  • the tire 1 further comprises a profiled tread 4, sidewalls 5, bead areas with bead cores (not shown), at least one carcass ply 6, an air-tight inner layer 7, and a belt 2 consisting of two plies, which is provided with a belt over its entire cross-section covered with its edges by the belt bandage 2.
  • the various components of a tire 1 are adapted in their design to the requirements in the operating condition. For example, different components consist of different rubber compounds.
  • the tire 1 has the construction "Sidewall to BeIt" (STB) Side wall rubber strip 5 axially adjacent to the belt 3 at about the same radial height as the belt 3. Radially above the side wall rubber strip 5 is another component, the skirt 8 is arranged, which establishes the connection between the tread 4 and side wall 5.
  • the belt bandage 2 is arranged radially above the belt 3 and extends to the belt edge cover between the side wall 5 and belt edge 9 in
  • the edges 9 of the belt are hammered with a rubber layer, a so-called wrap 10.
  • the reinforcements of the belt bandage 2 are nylon cords of construction 470 x 2.
  • the nylon cords run approximately in the circumferential direction, ie in the plane of the figure.
  • Each of the two nylon yarns S is first twisted at 340 T / M and S twisted together at 340 T / M together.
  • the cord is treated rubber-friendly for good rubber adhesion.
  • FIG. 2 shows a cross-sectional half of another car tire 1 is shown.
  • the tire 1 differs from the tire of Fig. 1 in that the tire 1 has the construction "sidewall over tread” (SOT).
  • SOT sidewall over tread
  • the side wall 5 is flush with and aligned with the radial height of the tread 4. pulled up, so that is dispensed with a skirt 10.
  • the belt bandage 2 has the same, described in Fig. 1 course and structure.

Abstract

The invention relates to a belt bandage (2) for a pneumatic vehicle tire (1), wherein the reinforcements of the belt bandage (2) are nylon cords arranged within the layer substantially parallel to each other. The nylon cord of the belt bandage (2) has the design of 470 x 2 and is made of two twisted threads with approximately 470 dtex each.

Description

Beschreibung description
Gürtelbandage für einen Fahrzeugluftreifen und Fahrzeugluftreifen, enthaltend diese GürtelbandageBelt bandage for a pneumatic vehicle tire and pneumatic vehicle tire containing this belt bandage
Die Erfindung betrifft eine Gürtelbandage für einen Fahrzeugluftreifen, wobei die Festigkeitsträger der Gürtelbandage Nylonkorde sind, welche innerhalb der Lage im Wesentlichen parallel zueinander angeordnet sind. Ferner betrifft die Erfindung einen Fahrzeugluftreifen, enthaltend eine derartige Gürtelbandage.The invention relates to a belt bandage for a pneumatic vehicle tire, wherein the strength members of the belt bandage are nylon cords which are arranged substantially parallel to each other within the ply. Furthermore, the invention relates to a pneumatic vehicle tire containing such a belt bandage.
Um bei Fahrzeugluftreifen, insbesondere im Hochgeschwindigkeitseinsatz, eine Erhebung des Reifens durch die im Fahrbetrieb auftretenden Fliehkräfte zu verhindern, ist es bekannt, bei einem Fahrzeugluftreifen eine Gürtelbandage vorzusehen. Ein Fahrzeugluftreifen radialer Bauart weist im Allgemeinen eine luftundurchlässige Innenschicht, eine Festigkeitsträger enthaltende Radialkarkasse, die vom Zenitbereich des Reifens über die Seitenwände bis in den Wulstbereich reicht und dort meist durch Umschlingen zugfester Wulstkerne verankert ist, einen radial außen befindlichen profilierten Laufstreifen und einen zwischen dem Laufstreifen und der Karkasse angeordneten Gürtel auf, welcher radial außen mit einer Gürtelbandage abgedeckt ist. Die Gürtelbandage kann ein- oder mehrlagig ausgebildet sein und deckt zumindest die Gürtelränder ab. Die Gürtelbandage enthält üblicherweise parallele und im Wesentlichen in Umfangsrichtung verlaufende Festigkeitsträger in Form von Korden, die in Gummi eingebettet sind.In order to prevent an elevation of the tire in the case of pneumatic vehicle tires, in particular in high-speed deployment, by the centrifugal forces occurring during driving, it is known to provide a belt bandage in a pneumatic vehicle tire. A radial type pneumatic vehicle tire generally has an air-impermeable inner layer, a radial carcass containing strength carriers, which extends from the zenith region of the tire over the sidewalls into the bead region and is usually anchored there by wrapping tensile bead cores, a profiled tread radially outwardly, and between the tread and the carcass arranged on belt, which is covered radially on the outside with a belt bandage. The belt bandage can be formed in one or more layers and covers at least the belt edges. The belt bandage usually includes parallel and substantially circumferentially extending reinforcing members in the form of cords embedded in rubber.
Die Bandage wird bei der Reifenherstellung in Form von Lagen mit in eine unvulkanisierte Kautschukmischung eingebetteten Festigkeitsträgern aufgebracht, die auf den Gürtel gewickelt oder als Streifen gespult werden. Die Festigkeitsträger werden in Kautschuk eingebettet, indem eine Schar von im Wesentlichen parallel liegenden fadenförmigen Festigkeitsträgern, die in der Regel thermisch und/oder zur besseren Haftung am einbettenden Gummi in dem Fachmann bekannter Art mit einer Imprägnierung vorbehandelt sind, in Längsrichtung einen Kalander oder einen Extruder zur Ummantelung mit der Kautschukmischung durchlaufen. Bei der Bombage mit bisher im Einsatz befindlichen Vorrichtungen und bei der Vulkanisation des Reifens dehnt sich der Reifen in der Regel im Schulterbereich durch die Erhebung um bis zu 2 % und im Mittenbereich um bis zu 5 % im Vergleich zum unvulkanisierten Rohling, wenn der Rohling auf einer flachen Trommel gewickelt wird.The bandage is applied in the manufacture of tires in the form of layers with embedded in an unvulcanized rubber compound reinforcing agents, which are wound on the belt or spooled as a strip. The strength members are embedded in rubber by forming a family of substantially parallel filiform Reinforcements, which are usually pretreated thermally and / or for better adhesion to the embedding rubber in a conventional manner with an impregnation, in the longitudinal direction through a calender or an extruder for sheathing with the rubber mixture. In the case of bombing with previously used devices and in the vulcanization of the tire, the tire usually extends in the shoulder area by the survey by up to 2% and in the center region by up to 5% compared to the unvulcanized blank when the blank on a flat drum is wound.
Die Korde der Bandage sollen bei der Reifenherstellung eine ausreichende Erhebung bei der Bombage und der Vulkanisation zulassen, damit der Reifen präzise ausgeformt werden kann. Zudem sollen sie nach der Fertigstellung des Reifens im Fahrbetrieb eine gute Hochgeschwindigkeitstauglichkeit gewährleisten.The cords of the bandage are to allow a sufficient elevation in the production of the tire during the cambering and the vulcanization, so that the tire can be precisely formed. In addition, they should ensure a good high speed capability after the completion of the tire while driving.
Als Festigkeitsträger für die Bandage sind bisher Korde aus Nylon mit Titern größer gleich 940 dtex (940 x n, 1400 x n, mit n größer gleich 1) bekannt. Nachteilig ist jedoch die Neigung des Reifens zum Fiatspot (Standstellenausbildung), einer Abplattung der Reifenaufstandsfläche, wodurch der Rundlauf des Reifens beeinträchtigt ist. Man ist zudem bestrebt, das Gewicht eines Reifens und somit seinen Rollwiderstand zu reduzieren und an den Entstehungskosten einzusparen.To date, nylon cords with titres greater than or equal to 940 dtex (940 × n, 1400 × n, with n greater than or equal to 1) have been known as reinforcements for the bandage. A disadvantage, however, is the tendency of the tire to the Fiatspot (booth training), a flattening of the tire contact patch, whereby the concentricity of the tire is impaired. It is also anxious to reduce the weight of a tire and thus its rolling resistance and save on the cost.
Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, eine Gürtelbandage für Fahrzeugluftreifen bereitzustellen, welche kostengünstig in der Herstellung ist, die dennoch den Anforderungen an eine Gürtelbandage gerecht wird. Die Gürtelbandage soll dem Fahrzeugluftreifen eine große Hochgeschwindigkeitstauglichkeit verleihen und seinen Rollwiderstand verringern.The present invention is based on the object to provide a belt bandage for pneumatic vehicle tires, which is inexpensive to manufacture, which nevertheless meets the requirements of a belt bandage. The belt bandage is intended to give the pneumatic vehicle tire high speed capability and reduce its rolling resistance.
Die Aufgabe wird gelöst, indem der Nylonkord die Konstruktion 470 x 2 aufweist und aus zwei zusammengedrehten Garnen von je etwa 470 dtex besteht.The problem is solved by the nylon cord has the construction 470 x 2 and consists of two twisted yarns of about 470 dtex.
Erfindungswesentlich ist, dass ein sehr feiner Nylon- Kord der Konstruktion 470 x 2 als Festigkeitsträger für eine Gürtelbandage verwendet wird und dennoch die erwünschten Eigenschaften der Gürtelbandage in einem Fahrzeugluftreifen erhaltbar sind. Eine Gürtelbandage mit Nylonkorden der Konstruktion 470 x 2 kann die im Hochgeschwindigkeitsbetrieb auftretenden Kräfte hinreichend aufnehmen. Zudem ist der Rollwiderstand des Reifens durch einen verminderten Materialeinsatz durch den feinen Kord, insbesondere durch den hierdurch verminderten Compoundeinsatz verbessert und die Neigung zum Fiatspot ist durch den verminderten Nylongehalt reduziert. Der Reifen weist auch mit dem feinen Kord der Gürtelbandage eine hohe Umfangssteifigkeit auf, welche die guten Hochgeschwindigkeitseigenschaften bewirken. Es ist zudem eine präzise Ausformung während der Reifenherstellung ermöglicht, wodurch der Reifen eine gute Uniformity aufweist.It is essential to the invention that a very fine 470 × 2 nylon cord is used as the strength support for a belt bandage and nevertheless the desired ones Properties of the belt bandage are obtainable in a pneumatic vehicle tire. A belt bandage with 470 x 2 nylon cords can adequately absorb the forces encountered during high-speed operation. In addition, the rolling resistance of the tire is improved by a reduced use of material by the fine cord, in particular by the resulting reduced compound use and the tendency to Fiatspot is reduced by the reduced nylon content. The tire also has high circumferential rigidity with the fine cord of the belt bandage, which provides good high speed properties. It also allows precise shaping during tire manufacture, giving the tire good uniformity.
Vorteilhaft ist es, wenn jedes der beiden Garne des Kordes mit 300 bis 500 t/m, vorzugsweise mit 340t/m verdreht ist. Mit dieser Drehungszahl ist eine federähnliche Wirkung des Kordes erreicht, durch die eine ausreichende Erhebung des Reifenrohlings im Herstellungsprozess ermöglicht ist. Der Materialeinsatz an Nylon ist vergleichsweise gering.It is advantageous if each of the two yarns of the cord with 300 to 500 t / m, preferably with 340t / m is twisted. With this number of turns, a spring-like effect of the cord is achieved, by which a sufficient elevation of the green tire is made possible in the manufacturing process. The material usage of nylon is comparatively low.
Wenn der Kord symmetrisch mit der gleichen Verdrehungszahl aber entgegengesetzter Drehrichtung wie das ihn bildende Garn verdreht ist, ist der Kord gut verarbeitbar und weist eine gute Restfestigkeit nach Ermüdung auf.If the cord is twisted symmetrically with the same twist number but opposite direction of rotation as the yarn forming it, the cord is easy to process and has a good residual fatigue strength.
Ein Fahrzeugluftreifen in Radialbauart, umfassend eine zumindest einlagig ausgeführte Karkasse, welche die Wulstkerne von radial innen nach radial außen umläuft, Seitenwände, einen Laufstreifen und einen zumindest einlagigen Gürtel, welcher radial außen von einer Gürtelbandage abgedeckt ist, wobei die Seitenwände axial neben oder radial oberhalb des Gürtels enden und die Gürtelbandage zur Abdeckung zumindest der Gürtelkanten zwischen Seitenwand und Gürtelkante in Richtung Karkasse verlaufend angeordnet ist, zeichnet sich dadurch aus, dass die Gürtelbandage Korde als Festigkeitsträger aus Nylon der Konstruktion 470 x 2 aufweist. Der Kord kann entsprechend der Offenbarung dieser Anmeldung vorteilhaft weitergebildet sein. Insbesondere bei STB- (Sidewall to BeIt) und SOT- (Sidewall over Tread) Konstruktionen hat es sich gezeigt, dass durch die Festigkeitsträger eines 940 x 1 Nylon- Gürtelbandagengewebes ein Sägeeffekt an den Karkasskorden auftreten kann. Denn bei den STB- und SOT- Konstruktionen verläuft die Gürtelbandage -im Reifenquerschnitt betrachtet- von oberhalb des Gürtels zwischen den Gürtelkanten und dem Seitenwandstreifen in Richtung Karkasse und endet kurz oberhalb oder direkt an der Karkasslage. Zwischen Bandagenkanten und Karkasslage kann es zu nachteiligen Sägeeffekten kommen.A radial type vehicle pneumatic tire comprising a carcass of at least one ply running around the bead cores from radially inward to radially outward, side walls, a tread and an at least single ply belt radially outwardly covered by a belt bandage, the side walls being axially adjacent or radially above of the belt ends and the belt bandage is arranged to cover at least the belt edges between the side wall and belt edge in the direction of the carcass, characterized in that the belt bandage cords as strength members made of nylon construction 470 x 2 has. The cord can be advantageously developed according to the disclosure of this application. Especially with STB (Sidewall to Beit) and SOT (Sidewall over Tread) constructions, it has been found that a strength effect of a 940 x 1 nylon belted bandage fabric can cause a sawing effect on the carcass cords. For in the STB and SOT constructions, the belt bandage, viewed in the tire cross-section, runs from above the belt between the belt edges and the sidewall strip towards the carcass and ends just above or directly at the carcass ply. There may be adverse sawing effects between the bandage edges and carcass ply.
Überraschenderweise tritt dieser Sägeeffekte bei einem vorgenannten 470 x 2 Nylongewebe bei STB- oder SOT- Konstruktionen nicht auf.Surprisingly, this sawing effect does not occur with an aforementioned 470 x 2 nylon fabric in STB or SOT constructions.
Die vorbeschriebene Festigkeitsträgerlage kann ebenfalls als Wulstverstärker in einem Fahrzeugluftreifen eingesetzt werden. Der Vorteil liegt gegenüber bekannten Konstruktionen darin, dass an Materialkosten und am Gewicht des Reifens eingespart wird.The above-described reinforcement layer can also be used as a bead reinforcement in a pneumatic vehicle tire. The advantage over known constructions is that it saves on material costs and on the weight of the tire.
Die bevorzugte Ausführungsform der in der Gürtelbandage angeordneten Festigkeitsträger wird nachfolgend beschrieben: Die Gürtelbandage besteht aus Nylonkord der Konstruktion 470 x 2. Jedes der zwei Nylon- Garne ist S mit 340 T/m erstverdreht und S mit 340 T/m gemeinsam miteinander endverdreht. Der Kord ist gummifreundlich behandelt. Die vorbeschriebene Festigkeitsträgerkonstruktion ist anstelle der Nylon- Kordkonstruktion 940 x 1 einsetzbar. Insbesondere bei SOT- und STB-Konstruktionen treten keine Sägeeffekte an der Karkasse auf. Die erfindungsgemäßen Korde der Gürtelbandage weisen folgende Eigenschaften auf:The belt bandage is constructed of 470 x 2 nylon cord. Each of the two nylon yarns is S first twisted at 340 T / m and S twisted together at 340 T / m together. The cord is treated rubber-friendly. The strength structure described above can be used instead of the nylon cord construction 940 x 1. Especially with SOT and STB constructions no sawing effects occur on the carcass. The cords of the belt bandage according to the invention have the following properties:
Nylonkord 470 x 2 Nylonkord 940 x 1 Nylonkord 940 x 2Nylon Cord 470 x 2 Nylon Cord 940 x 1 Nylon Cord 940 x 2
Schrumpf (%)Shrinkage (%)
5,0 +/- 0,5 5,0 +/- 0,5 5,0 +/- 0,5 bei 1800C - ASTM D 8555.0 +/- 0.5 5.0 +/- 0.5 5.0 +/- 0.5 at 180 ° C - ASTM D 855
Bruchdehnung (%)Elongation at break (%)
22 20 2022 20 20
ASTM D 855ASTM D 855
Bruchkraft (N)Breaking force (N)
75 80 15075 80 150
ASTM D 855 Der vorbeschriebene erfϊndungsgemäße 470 x 2 Nylonkord weist vergleichbare Eigenschaften zum 940 x 1 Nylonkord auf. Jedoch ist der erfindungsgemäße Kord vorteilhafterweise höherer ermüdungsbeständig. Somit ist der erfϊndungsgemäße Kord alternativ zum 940 x 1-Kord als Gürtelbandage einsetzbar. Bei einer SOT- oder STB- Konstruktion treten keine Sägeeffekte an der Karkasse mit dem erfindungsgemäßen Kord auf, während diese Sägeeffekte bei einer Gürtelbandage mit 940 x 1 -Korden beobachtet wurde.ASTM D 855 The above-described 470 × 2 nylon cord according to the invention has comparable properties to the 940 × 1 nylon cord. However, the cord according to the invention is advantageously higher fatigue resistant. Thus, the cord according to the invention can be used as a belt bandage as an alternative to the 940 x 1 cord. In a SOT or STB design, no sawing effects occur on the carcass with the cord of the present invention, while these sawing effects were observed in a 940 x 1 belt belt bandage.
Der erfϊndungsgemäße Kord weist im Vergleich zum 940 x 2 - Kord einen geringeren Schrumpf auf, wodurch im Einsatz als Gürtelbandagenfestigkeitsträger im Reifen das Flatspotting reduziert ist.The inventive cord has a lower shrinkage compared to the 940 × 2 cord, which reduces flat spotting when used as a belt bandage strength member in the tire.
Weitere Merkmale, Vorteile und Einzelheiten der Erfindung werden nun anhand derFurther features, advantages and details of the invention will now be described with reference to FIG
Zeichnungen, die schematische Ausführungsbeispiele darstellen, näher beschrieben. Dabei zeigt dieDrawings illustrating schematic embodiments, described in more detail. It shows the
Fig.l eine Querschnittshälfte eines PKW-Reifens mit Gürtelbandage;Fig.l a cross-sectional half of a passenger car tire with belt bandage;
Fig.2 eine Querschnittshälfte eines weiteren PKW-Reifens mit Gürtelbandage.2 shows a cross-sectional half of another car tire with belt bandage.
Die Fig. 1 zeigt eine Querschnittshälfte eines PKW-Radialreifens 1 mit einer Gürtelbandage 2. Die Gürtelbandage 2 ist radial oberhalb des Gürtels 3 als Gürtelabdeckung angeordnet und verhindert insbesondere im Hochgeschwindigkeitseinsatz eine Erhebung des Reifens 1 durch die im Fahrbetrieb auftretenden Fliehkräfte. Der Reifen 1 umfasst weiterhin einen profilierten Laufstreifen 4, Seitenwände 5, Wulstbereiche mit Wulstkernen (nicht dargestellt), zumindest eine Karkasslage 6, eine luftdicht ausgeführte Innenschicht 7, sowie einen hier aus zwei Lagen bestehenden Gürtel 3, welcher durch einen über seinen gesamten Querschnitt mit samt seiner Kanten von der Gürtelbandage 2 abgedeckt ist. Die verschiedenen Bauteile eines Reifens 1 sind in ihrer Ausführung den Anforderungen im Betriebszustand angepasst. So bestehen verschiedene Bauteile beispielsweise aus unterschiedlichen Gummimischungen. Der Reifen 1 weist die Konstruktion „Sidewall to BeIt" (STB) auf. Bei dieser Konstruktion endet der Seitenwandgummistreifen 5 axial zum Gürtel 3 benachbart auf etwa der gleichen radialen Höhe wie der Gürtel 3. Radial oberhalb des Seitenwandgummistreifens 5 ist ein weiteres Bauteil, das Skirt 8 angeordnet, welches die Verbindung zwischen Laufstreifen 4 und Seitenwand 5 herstellt. Die Gürtelbandage 2 ist radial oberhalb der Gürtels 3 angeordnet und verläuft zur Gürtelkantenabdeckung zwischen Seitenwand 5 und Gürtelkante 9 inFig. 1 shows a cross-sectional half of a passenger car radial tire 1 with a belt bandage 2. The belt bandage 2 is arranged radially above the belt 3 as a belt cover and prevents in particular in high-speed deployment a survey of the tire 1 by the centrifugal forces occurring during driving. The tire 1 further comprises a profiled tread 4, sidewalls 5, bead areas with bead cores (not shown), at least one carcass ply 6, an air-tight inner layer 7, and a belt 2 consisting of two plies, which is provided with a belt over its entire cross-section covered with its edges by the belt bandage 2. The various components of a tire 1 are adapted in their design to the requirements in the operating condition. For example, different components consist of different rubber compounds. The tire 1 has the construction "Sidewall to BeIt" (STB) Side wall rubber strip 5 axially adjacent to the belt 3 at about the same radial height as the belt 3. Radially above the side wall rubber strip 5 is another component, the skirt 8 is arranged, which establishes the connection between the tread 4 and side wall 5. The belt bandage 2 is arranged radially above the belt 3 and extends to the belt edge cover between the side wall 5 and belt edge 9 in
Richtung Karkasslage 5 und kann an der Karkasslage 5 oder kurz oberhalb der Karkasslage 6 enden. Die Kanten 9 des Gürtels sind mit einer Gummilage, einem sogenannten Wrap 10 eingeschlagen. Die Festigkeitsträger der Gürtelbandage 2 sind Nylonkorde der Konstruktion 470 x 2. Die Nylonkorde verlaufen in etwa in Umfangsrichtung, also in die Figurenebene hinein. Jedes der zwei Nylon-Garne ist S mit 340 T/m erstverdreht und S mit 340 T/m gemeinsam miteinander endverdreht. Der Kord ist zur guten Gummianhaftung gummifreundlich behandelt.In the direction of the carcass ply 5 and may terminate at the carcass ply 5 or just above the carcass ply 6. The edges 9 of the belt are hammered with a rubber layer, a so-called wrap 10. The reinforcements of the belt bandage 2 are nylon cords of construction 470 x 2. The nylon cords run approximately in the circumferential direction, ie in the plane of the figure. Each of the two nylon yarns S is first twisted at 340 T / M and S twisted together at 340 T / M together. The cord is treated rubber-friendly for good rubber adhesion.
In der Fig.2 ist eine Querschnittshälfte eines anderen PKW-Reifens 1 dargestellt. Der Reifen 1 unterscheidet sich von dem Reifen der Fig.l dadurch, dass der Reifen 1 die Konstruktion „Sidewall over Tread" (SOT) aufweist. Bei dieser Konstruktion ist die Seitenwand 5 bis auf die radiale Höhe des Laufstreifens 4 und mit diesem fluchtend, hochgezogen, so dass auf ein Skirt 10 verzichtet ist. Die Gürtelbandage 2 weist den gleichen, in Fig. 1 beschriebenen Verlauf und Aufbau auf. 2 shows a cross-sectional half of another car tire 1 is shown. The tire 1 differs from the tire of Fig. 1 in that the tire 1 has the construction "sidewall over tread" (SOT). In this construction, the side wall 5 is flush with and aligned with the radial height of the tread 4. pulled up, so that is dispensed with a skirt 10. The belt bandage 2 has the same, described in Fig. 1 course and structure.
Liste der BezugszeichenList of reference numbers
1 Fahrzeugluftreifen1 pneumatic vehicle tire
2 Gürtelbandage2 belt bandage
3 Gürtel3 belts
4 Laufstreifen4 treads
5 Seitenwand5 sidewall
6 Karkasslage6 carcass ply
7 Innenschicht7 inner layer
8 Skirt8 skirt
9 Gürtelkante9 belt edge
10 Wrap 10 wrap

Claims

Patentansprüche claims
1. Gürtelbandage für einen Fahrzeugluftreifen (1), wobei die Festigkeitsträger der Gürtelbandage (2) Nylonkorde sind, welche innerhalb der Lage im Wesentlichen parallel zueinander angeordnet sind, d a d u r c h g e k e n n z e i c h n e t, d a s s ein Nylonkord die Konstruktion 470 x 2 aufweist und aus zwei zusammengedrehten Garnen von je etwa 470 dtex besteht.A belt bandage for a pneumatic vehicle tire (1), wherein the reinforcements of the belt bandage (2) are nylon cords arranged substantially parallel to each other within the ply, characterized in that a nylon cord has the construction 470 x 2 and consists of two twisted yarns each about 470 dtex exists.
2. Gürtelbandage nach Anspruch 1, dadurch gekennzeichnet, dass jedes der beiden Garne des Kordes einzeln mit 300 bis 500 t/m, vorzugsweise mit 340 t/m verdreht ist.2. belt bandage according to claim 1, characterized in that each of the two yarns of the cord individually with 300 to 500 t / m, preferably with 340 t / m is twisted.
3. Gürtelbandage (2) nach zumindest einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Kord mit der gleichen Verdrehungszahl wie das ihn bildende Garn verdreht ist. (symmetrisch)3. belt bandage (2) according to at least one of the preceding claims, characterized in that the cord is twisted with the same rotation number as the yarn forming it. (Balanced)
4. Gürtelbandage (2) nach zumindest einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass jedes Garn S-gedreht und der Kord Z-endverdreht ist.4. belt bandage (2) according to at least one of the preceding claims, characterized in that each yarn is S-twisted and the cord Z-end twisted.
5. Gürtelbandage (2) nach zumindest einem der vorangehenden Ansprüche 1-3, dadurch gekennzeichnet, dass jedes Garn Z-gedreht und der Kord S-endverdreht ist.5. belt bandage (2) according to at least one of the preceding claims 1-3, characterized in that each yarn is Z-rotated and the cord S-end twisted.
6. Fahrzeugluftreifen (1) in Radialbauart umfassend eine zumindest einlagig ausgeführte Karkasse (6), welche die Wulstkerne von radial innen nach radial außen umläuft, Seitenwände (5), einen Laufstreifen (4) und einen zumindest einlagigen Gürtel (3), dessen Gürtelkanten (9) zumindest radial außen von einer Gürtelbandage (2) abgedeckt sind, wobei die Seitenwände (5) axial neben oder radial oberhalb des Gürtels (3) enden und die Gürtelbandage (2) zur Abdeckung zumindest der Gürtelkanten (9) zwischen Seitenwand (4) und Gürtelkante (9) in Richtung Karkasse (6) verlaufend angeordnet ist, dadurch gekennzeichnet, dass die Gürtelbandage (2) nach zumindest einem der Ansprüche 1-5 ausgebildet ist. 6. Pneumatic vehicle tire (1) comprising a radial at least one carcass (6) which surrounds the bead cores from radially inward to radially outward, side walls (5), a tread (4) and an at least single-layer belt (3) whose belt edges (9) are covered at least radially on the outside by a belt bandage (2), the side walls (5) terminating axially adjacent or radially above the belt (3) and the belt bandage (2) covering at least the belt edges (9) between the side wall (4) ) and belt edge (9) in the direction of carcass (6) is arranged to extend, characterized in that the belt bandage (2) according to at least one of claims 1-5 is formed.
EP08775065A 2007-08-29 2008-07-15 Belt bandage for a pneumatic vehicle tire and pneumatic vehicle tire, comprising said belt bandage Withdrawn EP2188137A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710040674 DE102007040674A1 (en) 2007-08-29 2007-08-29 Belt bandage for a pneumatic vehicle tire and pneumatic vehicle tire containing this belt bandage
PCT/EP2008/059205 WO2009027147A1 (en) 2007-08-29 2008-07-15 Belt bandage for a pneumatic vehicle tire and pneumatic vehicle tire, comprising said belt bandage

Publications (1)

Publication Number Publication Date
EP2188137A1 true EP2188137A1 (en) 2010-05-26

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EP08775065A Withdrawn EP2188137A1 (en) 2007-08-29 2008-07-15 Belt bandage for a pneumatic vehicle tire and pneumatic vehicle tire, comprising said belt bandage

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EP (1) EP2188137A1 (en)
DE (1) DE102007040674A1 (en)
WO (1) WO2009027147A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102009025793A1 (en) * 2009-02-19 2010-08-26 Continental Reifen Deutschland Gmbh Vehicle tires
DE102013105163A1 (en) 2013-05-21 2014-11-27 Continental Reifen Deutschland Gmbh Pneumatic vehicle tires and use of a yarn of a textile material
CN104249602A (en) * 2013-06-26 2014-12-31 风神轮胎股份有限公司 All-steel load-carrying low profile radial tire
EP3241689A1 (en) 2016-05-03 2017-11-08 Continental Reifen Deutschland GmbH Pneumatic tyres for a vehicle
DE102017211762A1 (en) * 2017-07-10 2019-01-10 Continental Reifen Deutschland Gmbh Vehicle tires

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Publication number Priority date Publication date Assignee Title
DE3308966A1 (en) * 1983-03-14 1984-09-20 Uniroyal Englebert Reifen GmbH, 5100 Aachen VEHICLE TIRES
JP4432546B2 (en) * 2004-03-09 2010-03-17 横浜ゴム株式会社 Pneumatic radial tire

Non-Patent Citations (1)

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Title
See references of WO2009027147A1 *

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DE102007040674A1 (en) 2009-03-05

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