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WO2008145421A1 - Câble hybride, en particulier pour une nappe de ceinture d'un pneu de véhicule - Google Patents

Câble hybride, en particulier pour une nappe de ceinture d'un pneu de véhicule Download PDF

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Publication number
WO2008145421A1
WO2008145421A1 PCT/EP2008/052705 EP2008052705W WO2008145421A1 WO 2008145421 A1 WO2008145421 A1 WO 2008145421A1 EP 2008052705 W EP2008052705 W EP 2008052705W WO 2008145421 A1 WO2008145421 A1 WO 2008145421A1
Authority
WO
WIPO (PCT)
Prior art keywords
yarn
twisted
pneumatic vehicle
aramid
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.)
Ceased
Application number
PCT/EP2008/052705
Other languages
German (de)
English (en)
Inventor
Claus Von Barneveld
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 AG
Original Assignee
Continental AG
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 AG filed Critical Continental AG
Publication of WO2008145421A1 publication Critical patent/WO2008145421A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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
    • B60C9/005—Reinforcements made of different materials, e.g. hybrid or composite cords
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/48—Tyre cords
    • 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
    • B60C2009/2214—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 characterised by the materials of the zero degree ply cords
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
    • D10B2331/021—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides aromatic polyamides, e.g. aramides
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]

Definitions

  • the invention relates to a reinforcing layer for elastomeric products, in particular for the belt bandage of pneumatic vehicle tires, wherein the reinforcements are hybrid cords, which are arranged substantially parallel to each other within the layer and from a first twisted yarn of a first material and a second twisted yarn of a second material, which are end twisted together, are constructed, wherein the first twisted yarn is an aramid yarn. Furthermore, the invention relates to a pneumatic vehicle tire, comprising a belt bandage and / or a bead reinforcement would be made of such a strength carrier.
  • 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 side walls to 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 radially outwardly covered with the 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 strength 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 that are wound or wound on the belt.
  • the reinforcing elements are embedded in rubber by a calender or an extruder in the longitudinal direction by a group of essentially parallel thread-like reinforcing elements, which are usually pretreated with an impregnation thermally and / or for better adhesion to the embedding rubber in a manner known to the person skilled in the art go through to the jacket with the rubber compound.
  • the tire In the bombing with previously used devices and 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 4% 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 camber and in the vulcanization mold in the tire production, so that the tire can be formed precisely, and they should ensure a good high speed capability after the completion of the tire while driving. To meet these requirements, the cords should be stretched with an effort of about 4% with moderate effort and from a higher elongation only with very high force.
  • a reinforcing material layer having a hybrid cord in particular as a belt bandage for vehicle tires, has become known from EP 1 475 248 A1.
  • the hybrid cords consist of two twisted yarns, one yarn of the cord being an aramid yarn and the second yarn being a nylon yarn.
  • the aforementioned reinforcement layer gives the tire good high speed capability.
  • the tire may tend to flat-spit due to increased shrinkage.
  • the present invention is based on the object to provide a reinforcing layer of rubberized hybrid cords for elastomeric products, in particular for the belt bandage of pneumatic vehicle tires, which is subject to only a slight shrinkage, thereby reducing the flat spotting.
  • the reinforcement layer should be characterized by a force-strain behavior, which in Use of the reinforcement layer, in particular as a belt bandage in pneumatic vehicle tires, allows trouble-free tire construction including vulcanization and gives the tire a high-speed capability.
  • the second twisted yarn is a polyester yarn (PES yarn).
  • PES yarn polyester yarn
  • an alternative reinforcing layer is provided whose reinforcements are hybrid cords consisting of two twisted yarns, one yarn being a PES yarn while the other yarn is an aramid yarn.
  • PET or PEN yarns are suitable as PES yarn.
  • Essential to the invention is that, surprisingly, despite the use of aramid as one of the two yarn materials of the hybrid cord sufficient stretching during the tire manufacturing step of the camber and the vulcanization is obtainable, so that the green tire is precisely formed.
  • the tire is well suited for high speed.
  • aramid yarns and cords have a particularly high elastic modulus.
  • a layer of aramid strength supports shows advantageous properties of non-shrinkage and low plastic deformation in the finished tire.
  • pure aramid support sheets prove disadvantageous because they allow too little elongation, so that the green tire is insufficiently formable and thus only poor tire uniformity can be obtained.
  • the aramid material is expensive.
  • aramid cords used as a strength carrier especially in tire applications as a belt bandage, so far not advantageous as a strength carrier used.
  • the hybrid cord according to the invention has a better elongation than a pure aramid cord. He has a lower compared to an aramid / nylon cord
  • a pneumatic vehicle tire with a belt bandage according to the invention only slightly tends to flat-spotting.
  • the hybrid cord is relatively inexpensive to purchase, because PES is inexpensive to obtain in the purchase. Only the aramid yarn of the hybrid cord has load-bearing properties, while the PES yarn serves as a filler and allows sufficient elevation during the cambering and vulcanization. Because the aramid yarn and the PES yarn are vertwistet so that the aramid yarn is arranged helically in the cord and reaches a spring-like effect, which allows the survey of the corduroy according to the invention.
  • the tire has a high circumferential rigidity, which causes the good high-speed properties. It also allows precise shaping during tire manufacture, giving the tire good uniformity.
  • the elongation of the cord may be controlled by suitable dipping techniques known to those skilled in the art.
  • the aramid yarn has a fineness ⁇ 1680 dtex and the PES yarn has a fineness ⁇ 1670 dtex.
  • a comparatively fine hybrid cord is created, due to its low weight, but also due to its above-described advantageous properties such as the sustainability of the hybrid cord, the low tendency to flat spotting by only low shrinkage properties of the cord and the good connectability of the cord to rubber, the performance of Tire, in particular a UHP (Ultra High Performace) tire, increased.
  • the difference in the fineness between the two yarns should be chosen as small as possible in order to obtain the most uniform / symmetrical cord, which can be processed well and has a good residual strength after fatigue. It is advantageous if both yarns forming the cord have a very similar fineness.
  • the hybrid cord forming yarns are twisted end with a rotation of 300-480 t / m. Too high a rotation speed prolongs the manufacturing process, requires more material and increases costs. If the rotation speed is too low, the cord loses its spring-like effect and a sufficient elevation of the green tire would not be guaranteed.
  • PES yarns are PET yarns or PEN yarns. Both yarns behave approximately the same, but the PET yarn is cheaper and is therefore preferred.
  • the tire has a particularly good high-speed capability and flattening under load (flat-spotting) are greatly reduced.
  • the advantage lies in the fact that the hybrid-strength support has only a small shrinkage compared with nylon strength supports commonly used and thus the tendency for flat spotting is reduced.
  • advantages are achieved in particular with regard to the material costs, but sufficient strength is obtained.
  • Another exemplary hybrid cord which can be used in the reinforcing layer according to the invention is a PET yarn with a fineness of 1100 dtex, Z-twisted with 420 T / m first twist and an aramid yarn with a fineness of 1100 dtex, Z-twisted with 420 T / m initial twist were twisted with a final twist of 420 T / m to a hybrid cord (PET 1110x1 + aramid 1100x1) S-.
  • the yarns S and the cord Z can be turned.
  • a hybrid cord of aramid and nylon of the construction aramid 1680x1 + PA66 1400x1 is listed.
  • the aramid / PET hybrid cords according to the invention have a much lower shrinkage of about 1.5% to 2.5% than a nylon / aramid hybrid cord with a shrinkage of up to max. 4% (according to ASTM D 855 at 180 ° C.).
  • the hybrid cords according to the invention are less expensive than the comparison cords. The others

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

Abstract

La présente invention concerne une couche de supports de résistance, en particulier pour la nappe de ceinture de pneus d'un véhicule, les supports de résistance étant des câbles hybrides qui sont disposés parallèlement les uns aux autres et sont constitués d'un premier fil torsadé composé d'un premier matériau et d'un second fil torsadé composé d'un second matériau, qui sont torsadés par leurs extrémités l'un avec l'autre. Le premier fil torsadé est un fil d'aramide et le second fil torsadé est un fil PES sous forme d'un fil PET ou PEN. En outre, l'invention concerne un pneu de véhicule contenant une nappe de ceinture et/ou un renfort de talon constitué d'une telle couche de supports de résistance.
PCT/EP2008/052705 2007-05-31 2008-03-06 Câble hybride, en particulier pour une nappe de ceinture d'un pneu de véhicule Ceased WO2008145421A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710025490 DE102007025490A1 (de) 2007-05-31 2007-05-31 Festigkeitsträgerlage aus Hybridcorden für elastomere Erzeugnisse, insbesondere für die Gürtelbandage von Fahrzeugluftreifen
DE102007025490.5 2007-05-31

Publications (1)

Publication Number Publication Date
WO2008145421A1 true WO2008145421A1 (fr) 2008-12-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/052705 Ceased WO2008145421A1 (fr) 2007-05-31 2008-03-06 Câble hybride, en particulier pour une nappe de ceinture d'un pneu de véhicule

Country Status (2)

Country Link
DE (1) DE102007025490A1 (fr)
WO (1) WO2008145421A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2113397A1 (fr) * 2008-04-30 2009-11-04 Continental Aktiengesellschaft Couche de renfort en corde hybride pour produits élastomères, en particulier pour le bandage de ceintures de pneus de véhicule
CN114025970A (zh) * 2019-06-19 2022-02-08 大陆轮胎德国有限公司 具有带束箍带的车辆轮胎

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112012015450B1 (pt) * 2009-12-23 2022-04-26 Pirelli Tyre S.P.A Método para fabricar uma estrutura de carcaça de um pneu para rodas de veículo, e, pneu para rodas de veículo
DE102010017107A1 (de) * 2010-05-27 2011-12-01 Continental Reifen Deutschland Gmbh Verstärkungskord für elastomere Erzeugnisse, insbesondere für eine Karkasslage oder eine Gürtelbandage von Fahrzeugluftreifen
DE102012108519A1 (de) 2012-09-12 2014-03-13 Continental Reifen Deutschland Gmbh Verstärkungscord für elastomere Erzeugnisse, insbesondere für einen Fahrzeugluftreifen, und Fahrzeugluftreifen
EP2781633A1 (fr) * 2013-03-18 2014-09-24 Continental Reifen Deutschland GmbH Corde hybride constituée d'au moins deux fils multifilaments entortillés l'un avec l'autre
DE102013108390A1 (de) 2013-08-05 2015-02-05 Continental Reifen Deutschland Gmbh Festigkeitsträgerlage aus Hybridkorden für elastomere Erzeugnisse, insbesondere für die Gürtelbandage von Fahrzeugluftreifen
DE102013223573A1 (de) 2013-11-19 2015-05-21 Continental Reifen Deutschland Gmbh Dünner Hybridfestigkeitsträger für elastomere Erzeugnisse, insbesondere für die Gürtelbandage eines Fahrzeugluftreifens, sowie Verfahren zur Herstellung
WO2015137901A1 (fr) * 2014-03-12 2015-09-17 Kordsa Global Endustriyel Iplik Ve Kord Bezi Sanayi Ve Ticaret Anonim Sirketi Pneu radial a bandage pneumatique a renfort de câbles hybrides
DE102015201738A1 (de) * 2015-02-02 2016-08-18 Continental Reifen Deutschland Gmbh Fahrzeugluftreifen
US11639565B2 (en) 2016-09-29 2023-05-02 Kolon Industries, Inc. Hybrid tire cord and method for manufacturing the same
EP3848191A1 (fr) 2020-01-07 2021-07-14 Glanzstoff Industries A.G. Matériau de renfort et produit élastomère renforcé avec celui-ci

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4155394A (en) * 1977-08-29 1979-05-22 The Goodyear Tire & Rubber Company Tire cord composite and pneumatic tire
EP0335588A2 (fr) * 1988-03-28 1989-10-04 Sumitomo Rubber Industries Limited Pneumatique radial
DE4135599A1 (de) * 1991-10-29 1993-05-06 Continental Aktiengesellschaft, 3000 Hannover, De Fahrzeugluftreifen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50302702D1 (de) 2003-05-09 2006-05-11 Continental Ag Gürtelbandage mit Hybridkord und Reifen damit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4155394A (en) * 1977-08-29 1979-05-22 The Goodyear Tire & Rubber Company Tire cord composite and pneumatic tire
EP0335588A2 (fr) * 1988-03-28 1989-10-04 Sumitomo Rubber Industries Limited Pneumatique radial
DE4135599A1 (de) * 1991-10-29 1993-05-06 Continental Aktiengesellschaft, 3000 Hannover, De Fahrzeugluftreifen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2113397A1 (fr) * 2008-04-30 2009-11-04 Continental Aktiengesellschaft Couche de renfort en corde hybride pour produits élastomères, en particulier pour le bandage de ceintures de pneus de véhicule
CN114025970A (zh) * 2019-06-19 2022-02-08 大陆轮胎德国有限公司 具有带束箍带的车辆轮胎

Also Published As

Publication number Publication date
DE102007025490A1 (de) 2008-12-04

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