EP2398657A1 - Pneumatique pour véhicule - Google Patents

Pneumatique pour véhicule

Info

Publication number
EP2398657A1
EP2398657A1 EP09748112A EP09748112A EP2398657A1 EP 2398657 A1 EP2398657 A1 EP 2398657A1 EP 09748112 A EP09748112 A EP 09748112A EP 09748112 A EP09748112 A EP 09748112A EP 2398657 A1 EP2398657 A1 EP 2398657A1
Authority
EP
European Patent Office
Prior art keywords
vehicle tire
pneumatic vehicle
tire according
polyester
cord
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
EP09748112A
Other languages
German (de)
English (en)
Inventor
Wolfgang Reese
Kay Bernkurth
Martin Francke
Reinhard Ludwig
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 EP2398657A1 publication Critical patent/EP2398657A1/fr
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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T152/00—Resilient tires and wheels
    • Y10T152/10—Tires, resilient
    • Y10T152/10495—Pneumatic tire or inner tube
    • Y10T152/10765—Characterized by belt or breaker structure
    • Y10T152/1081—Breaker or belt characterized by the chemical composition or physical properties of elastomer or the like

Definitions

  • the invention relates to a pneumatic vehicle tire having a belt and a reinforcement layer embedded in at least one rubber compound.
  • Strength supports for reinforcing various elastomeric products are well known.
  • a belt bandage which is formed in one or more layers, covering the belt edges and contains parallel and substantially circumferentially extending reinforcements in the form of rubber embedded in the cords.
  • This belt bandage serves, in particular in high-speed deployment, to prevent an elevation of the tire by the centrifugal forces occurring during driving.
  • the bandage is applied in the manufacture of tires in the form of layers, strips or single cords with embedded in an unvulcanized rubber compound reinforcements, which are wound or wound on the belt.
  • the strength members are embedded in rubber by a calender or a calender in the longitudinal direction by a set of substantially parallel filiform reinforcing agents, which are usually pretreated with an impregnation thermally and / or for better adhesion to the embedding rubber in the manner known to those skilled in the art go through an extruder to coat with the rubber compound.
  • the cords of the bandage are to allow a sufficient elevation in the camber and in the vulcanization mold in the tire manufacture, so that the tire can be formed precisely, and they should have a good high-speed capability after completion of the tire while driving, i. ensure a good dimensional stability.
  • the cords should be stretched to an elongation of about ⁇ -4% with moderate effort and from a higher elongation only with very high force.
  • Conveyor belts are belts made endless, which as an essential feature usually contain a reinforcement made of fabric inserts constructed of identical and / or different cord materials.
  • the cord fabric is subject here already in the production of conveyor belts strong mechanical stress. It is fritationiert or paved to make it easy to attach to the slip layer and then occupied in the calender on both sides, several times doubled and finally aufkalandriert the ceiling pad.
  • Conveyor belts usually have to withstand considerable loads due to high transport rates, which is why usually a high strength carrier use is necessary.
  • a tension member is formed from a reinforcement layer consisting of cable cords.
  • the cords embedded in a rubber matrix are protected by one or two rubberized transfer fabrics.
  • the Cord should allow the flat belt transmission of high forces at low strains.
  • fabric hoses that are exposed to high internal and external pressures and therefore be reinforced by a suitable reinforcement layer of a cord fabric or individual cords.
  • reinforcement by a reinforcing layer constructed of cords is also important for partially absorbing the stresses of compression, tension or thrust.
  • the requirement for the strengthened support layer composed of cords in turn lies in the high power transmission with the lowest possible strains.
  • Hybrid cord ensures a lower separation of the individual threads of the
  • D2 describes a dip-coated hybrid cord comprising a rayon and a lyocell
  • vehicle tires having a low-spin strength strength cord of 40 to 100 t / m is known from D3_. This is intended to improve the rolling resistance of high-speed tires.
  • D4 is known a vehicle tire having a strength carrier cord consisting of monofilament yarn, the monofilament having a fineness of at least 250 dtex and wherein the monofilament is not twisted.
  • D5_ and D6 respectively describe lightweight tires with optimized rolling resistance behavior with an "overlay" of cords selected from the group consisting of aramid, rayon, PEN, PET and PVA, the belts of which are made of fiberglass (D5) or rayon (D6).
  • D7 discloses a pneumatic vehicle tire having a so-called 0 ° belt ply consisting of polyethylene terephthalate or nylon fibers.
  • the twist is not more than 300 t / m.
  • the object of the invention is therefore to provide a pneumatic vehicle tire having a built up of yarns and / or cords reinforcement layer, which have a lower shrinkage behavior and a higher dimensional stability.
  • the object of the invention is achieved in that the pneumatic vehicle tire with a belt and embedded in at least one rubber compound
  • Reinforcing layer is characterized in that the belt consists of a material which is selected from the group consisting of steel, aramid, carbon fibers, natural fibers, magnesium and magnesium compounds and that the reinforcement layer at an angle between 0 ° and 5 ° to the circumferential direction of single or multi-layered is and consists of at least one polyester yarn and / or polyester cord.
  • such a reinforcement layer in a pneumatic vehicle tire whose belt material is selected from the group consisting of steel, aramid, carbon fibers, natural fibers, magnesium and magnesium compounds, is characterized by a significantly improved shrinkage behavior and a significantly improved dimensional stability.
  • the skilled person known use of polyamide yarns and cords in a reinforcement layer has a low elastic modulus and shows in the finished tire the disadvantage of high heat shrinkage.
  • reinforcing layer layers thus constructed are disadvantageous because they have too little elongation, so that the green tire is insufficiently moldable and thus only poor uniformity of the tire can be obtained.
  • the pneumatic vehicle tire according to the invention with a reinforcement layer of polyester yarn and / or polyester cord does not exhibit these disadvantages mentioned above.
  • the use of a reinforcing layer polyester yarn and / or polyester cord is significantly less expensive than the use of the hitherto customary aramid yarns or cords and / or as the use of hybrid cords.
  • the reinforcement layer is formed at an angle between 0 ° and 5 ° to the circumferential direction single-layer or multi-layer, wherein single-layer is preferred. Trained in this context means that it is wound in the circumferential direction single-layered or multi-layered, preferably single-layered.
  • the belt of the vehicle pneumatic tire of the present invention is made of a material selected from the group consisting of steel, aramid, carbon fibers, natural fibers, magnesium and magnesium compounds, with steel being preferred.
  • the polyester yarn and / or the polyester cord are an HMLS polyester yarn and / or an HMLS polyester cord (High Modulus Low Shrinkage) or a HMHS polyester yarn and / or an HMHS polyester cord (High Modulus High Shrinkage).
  • an HMLS polyester yarn and / or an HMLS polyene cord is used, wherein the dipped polyester yarn and / or the dipped HMLS polyester cord for use in tires should have a shrinkage at 180 ° C. according to ASTM D 855 of 2% ⁇ 1.0%
  • a cord in contrast to a yarn, consists of at least two yarns twisted together.
  • the polyester of the polyester yarn and / or the polyester cord selected from the group consisting of polyethylene terephthalate (PET) and / or polyethylene naphthalate (PEN) and / or polybutylene terephthalate (PBT) and / or polycarbonate (PC).
  • PET polyethylene terephthalate
  • PEN polyethylene naphthalate
  • PBT polybutylene terephthalate
  • PC polycarbonate
  • the polyester cord has a fineness of 2000 to 5000 dtex, preferably of 3000 to 4000 dtex, and / or the polyester yarn has a fineness of 1000 to 1670 dtex, preferably 1100 to 1440 dtex.
  • the expert person is aware that the information for cords refers to the entire dtex.
  • the polyester yarn preferably present as dipped cords, i. already provided with an adhesive impregnation, with a twist number of 250 to 500 t / m, preferably with 370 to 430 t / m end twisted and a strain value at 45 N according to ASTM D 855 between 2.0 and 5.5%, preferably between 2 , 7 and 5.0%, more preferably between 3.2 and 4.5%.
  • the reinforcement layer embedded in at least one rubber mixture is used in a pneumatic vehicle tire, preferably as a belt bandage and / or or as a bead reinforcer, so the tire has a particularly good
  • the cord density in a particular embodiment is 80 to 125 epdm, preferably 90 to 110 epdm.
  • the specified forces are clearly defined by the dependence on the strain.
  • the shrinkage is defined by the dependence on the counterforce.
  • the values given are laboratory data with a preload of 0.5 cN / tex, ie 940x2 results in a preload of 94cN and in 1440x2 a preload of 144cN.
  • the higher modulus of the polyester cord requires that the number of layers of the
  • Strengthener can be reduced by about 50%, which also reduces the amount of the rubber mixture in which the reinforcement layer is embedded. This results in a better rolling resistance behavior of the pneumatic vehicle tire and consequently a lower fuel consumption. The significantly improved shrinkage results in the pneumatic vehicle tire increased dimensional stability.

Landscapes

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

Abstract

L'invention concerne un pneumatique pour véhicule, comprenant une nappe et une couche de renforcement intégrée dans au moins un mélange de caoutchouc, la nappe étant constituée d'un matériau choisi dans le groupe constitué par l'acier, l'aramide, les fibres de carbone, les fibres naturelles, le magnésium et des composés de magnésium. La couche de renforcement présente une ou plusieurs couches orientées selon un angle compris entre 0° et 5° par rapport à la direction périphérique et étant constituée d'au moins un fil de polyester et/ou une corde de polyester.
EP09748112A 2009-02-19 2009-11-04 Pneumatique pour véhicule Ceased EP2398657A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102009003511 2009-02-19
DE102009025793A DE102009025793A1 (de) 2009-02-19 2009-05-13 Fahrzeugluftreifen
PCT/EP2009/064602 WO2010094357A1 (fr) 2009-02-19 2009-11-04 Pneumatique pour véhicule

Publications (1)

Publication Number Publication Date
EP2398657A1 true EP2398657A1 (fr) 2011-12-28

Family

ID=42356775

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09748112A Ceased EP2398657A1 (fr) 2009-02-19 2009-11-04 Pneumatique pour véhicule

Country Status (8)

Country Link
US (1) US20110240199A1 (fr)
EP (1) EP2398657A1 (fr)
JP (1) JP2012517934A (fr)
CN (1) CN102317090A (fr)
BR (1) BRPI0923746A2 (fr)
DE (1) DE102009025793A1 (fr)
RU (1) RU2521159C2 (fr)
WO (1) WO2010094357A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010036760A1 (de) * 2010-07-30 2012-02-02 Continental Reifen Deutschland Gmbh Fahrzeugluftreifen
FR2986739B1 (fr) * 2012-02-09 2014-03-21 Michelin & Cie Pneumatique a structure de ceinture allegee
FR2986740B1 (fr) * 2012-02-09 2014-03-21 Michelin & Cie Pneumatique a structure de ceinture allegee
DE102012105766A1 (de) * 2012-06-29 2014-02-20 Continental Reifen Deutschland Gmbh Festigkeitsträgerlage und Fahrzeugluftreifen
BR112016001726B1 (pt) 2013-07-30 2021-09-21 Compagnie Generale Des Etablissements Michelin Pneu radial com estrutura de cinta mais leve
FR3009238B1 (fr) 2013-07-30 2016-10-28 Michelin & Cie Pneu radial a structure de ceinture allegee
DE102016204423A1 (de) * 2016-03-17 2017-09-21 Continental Reifen Deutschland Gmbh Verstärkungslage für einen Fahrzeugluftreifen, vorzugweise für eine Gürtelbandagenlage eines Fahrzeugluftreifens
DE102016204925A1 (de) * 2016-03-24 2017-09-28 Continental Reifen Deutschland Gmbh Fahrzeugluftreifen
US20180290497A1 (en) * 2017-04-11 2018-10-11 Super ATV, LLC Vehicle tire
DE102017214595A1 (de) * 2017-08-22 2019-02-28 Continental Reifen Deutschland Gmbh Festigkeitsträgerlage der Karkasse sowie Fahrzeugluftreifen
DE102018206562A1 (de) * 2018-04-27 2019-10-31 Continental Reifen Deutschland Gmbh Fahrzeugluftreifen
DE102018209525A1 (de) * 2018-06-14 2019-12-19 Continental Reifen Deutschland Gmbh Verstärkungscord für elastomere Erzeugnisse, insbesondere für Fahrzeugluftreifen, und elastomeres Erzeugnis
DE102019208984A1 (de) * 2019-06-19 2020-12-24 Continental Reifen Deutschland Gmbh Fahrzeugreifen mit Gürtelbandage

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WO2008156333A1 (fr) * 2007-06-20 2008-12-24 Kolon Industries, Inc. Fibre de poly(téréphtalate d'éthylène) étirée, câble pour pneus en poly(téréphtalate d'éthylène, leur procédé de préparation et pneu les comprenant
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Also Published As

Publication number Publication date
BRPI0923746A2 (pt) 2020-08-11
RU2011128001A (ru) 2013-03-27
JP2012517934A (ja) 2012-08-09
CN102317090A (zh) 2012-01-11
WO2010094357A1 (fr) 2010-08-26
RU2521159C2 (ru) 2014-06-27
DE102009025793A1 (de) 2010-08-26
US20110240199A1 (en) 2011-10-06

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