WO2009027147A1 - Nappe de ceinture pour un pneu de véhicule et pneu de véhicule comprenant ladite nappe de ceinture - Google Patents

Nappe de ceinture pour un pneu de véhicule et pneu de véhicule comprenant ladite nappe de ceinture Download PDF

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Publication number
WO2009027147A1
WO2009027147A1 PCT/EP2008/059205 EP2008059205W WO2009027147A1 WO 2009027147 A1 WO2009027147 A1 WO 2009027147A1 EP 2008059205 W EP2008059205 W EP 2008059205W WO 2009027147 A1 WO2009027147 A1 WO 2009027147A1
Authority
WO
WIPO (PCT)
Prior art keywords
belt
belt bandage
bandage
cord
tire
Prior art date
Application number
PCT/EP2008/059205
Other languages
German (de)
English (en)
Inventor
Claus Van Barneveld
Günter Wahl
Carole Justine
Original Assignee
Continental Aktiengesellschaft
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 Aktiengesellschaft filed Critical Continental Aktiengesellschaft
Priority to EP08775065A priority Critical patent/EP2188137A1/fr
Publication of WO2009027147A1 publication Critical patent/WO2009027147A1/fr

Links

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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

L'invention concerne une nappe (2) de ceinture pour un pneu (1) de véhicule, les éléments de renforcement de la nappe (2) étant des câblés en nylon placés à l'intérieur de la nappe de manière sensiblement parallèle les uns aux autres. Les câblés en nylon de la nappe (2) de ceinture sont du type 470x2 et sont constitués de deux fils torsadés présentant chacun une masse linéique d'environ 470 dtex.
PCT/EP2008/059205 2007-08-29 2008-07-15 Nappe de ceinture pour un pneu de véhicule et pneu de véhicule comprenant ladite nappe de ceinture WO2009027147A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08775065A EP2188137A1 (fr) 2007-08-29 2008-07-15 Nappe de ceinture pour un pneu de véhicule et pneu de véhicule comprenant ladite nappe de ceinture

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007040674.8 2007-08-29
DE200710040674 DE102007040674A1 (de) 2007-08-29 2007-08-29 Gürtelbandage für einen Fahrzeugluftreifen und Fahrzeugluftreifen, enthaltend diese Gürtelbandage

Publications (1)

Publication Number Publication Date
WO2009027147A1 true WO2009027147A1 (fr) 2009-03-05

Family

ID=39764773

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/059205 WO2009027147A1 (fr) 2007-08-29 2008-07-15 Nappe de ceinture pour un pneu de véhicule et pneu de véhicule comprenant ladite nappe de ceinture

Country Status (3)

Country Link
EP (1) EP2188137A1 (fr)
DE (1) DE102007040674A1 (fr)
WO (1) WO2009027147A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012517934A (ja) * 2009-02-19 2012-08-09 コンティネンタル・ライフェン・ドイチュラント・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング 車両用の空気式タイヤ

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013105163A1 (de) * 2013-05-21 2014-11-27 Continental Reifen Deutschland Gmbh Fahrzeugluftreifen und Verwendung eines Garnes aus einem textilen Material
CN104249602A (zh) * 2013-06-26 2014-12-31 风神轮胎股份有限公司 一种全钢载重子午线低断面轮胎
EP3241689A1 (fr) 2016-05-03 2017-11-08 Continental Reifen Deutschland GmbH Pneumatiques de véhicule
DE102017211762A1 (de) * 2017-07-10 2019-01-10 Continental Reifen Deutschland Gmbh Fahrzeugluftreifen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3308966A1 (de) * 1983-03-14 1984-09-20 Uniroyal Englebert Reifen GmbH, 5100 Aachen Fahrzeugluftreifen
JP2005254856A (ja) * 2004-03-09 2005-09-22 Yokohama Rubber Co Ltd:The 空気入りラジアルタイヤ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3308966A1 (de) * 1983-03-14 1984-09-20 Uniroyal Englebert Reifen GmbH, 5100 Aachen Fahrzeugluftreifen
JP2005254856A (ja) * 2004-03-09 2005-09-22 Yokohama Rubber Co Ltd:The 空気入りラジアルタイヤ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012517934A (ja) * 2009-02-19 2012-08-09 コンティネンタル・ライフェン・ドイチュラント・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング 車両用の空気式タイヤ

Also Published As

Publication number Publication date
EP2188137A1 (fr) 2010-05-26
DE102007040674A1 (de) 2009-03-05

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