EP1773606A1 - Cable de renfort destine a des produits elastomeres - Google Patents

Cable de renfort destine a des produits elastomeres

Info

Publication number
EP1773606A1
EP1773606A1 EP05752748A EP05752748A EP1773606A1 EP 1773606 A1 EP1773606 A1 EP 1773606A1 EP 05752748 A EP05752748 A EP 05752748A EP 05752748 A EP05752748 A EP 05752748A EP 1773606 A1 EP1773606 A1 EP 1773606A1
Authority
EP
European Patent Office
Prior art keywords
cord
metallic
elongation
reinforcing
reinforcing 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.)
Withdrawn
Application number
EP05752748A
Other languages
German (de)
English (en)
Inventor
Wolfgang Reese
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 EP1773606A1 publication Critical patent/EP1773606A1/fr
Withdrawn legal-status Critical Current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
    • B60C9/0042—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
    • 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
    • B60C9/0057—Reinforcements comprising preshaped elements, e.g. undulated or zig-zag filaments
    • 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
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0606—Reinforcing cords for rubber or plastic articles
    • D07B1/062—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2023—Strands with core
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2024—Strands twisted
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2015—Strands
    • D07B2201/2024—Strands twisted
    • D07B2201/2029—Open winding
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2055—Cores characterised by their structure comprising filaments or fibers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/2039—Polyesters
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/2046—Polyamides, e.g. nylons
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/2067—Viscose or regenerated cellulose, e.g. Rayon
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2401/00—Aspects related to the problem to be solved or advantage
    • D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
    • D07B2401/2005—Elongation or elasticity
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2046—Tire 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
    • 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 cord for elastomeric products, in particular for the belt bandage of vehicle pneumatic tires, made of a non-metallic cord core, which is helically wound with at least one metallic filament. Further, the invention relates to a pneumatic vehicle tire comprising a belt bandage containing the reinforcing cords.
  • a pneumatic vehicle tire which generally has an air-impermeable inner layer, a radial carcass containing strength carriers, which extends from the zenith region of the tire through the sidewalls extends into the bead area and is anchored there by wrapping tensile bead cores, a radially outer, Prof ⁇ lrillen having rubber tread strip and a belt between the rubber tread and the carcass has to provide a belt bandage.
  • the belt bandage may be formed in one or more layers, covers at least the belt edges and includes parallel and substantially circumferentially extending reinforcements in the form of cords, which are 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 strength members are embedded in rubber for such layers by a set of substantially parallel filiform reinforcing members, which are usually thermally and / or for better adhesion to the embedding rubber in the known manner with a
  • Impregnation are pretreated, in the longitudinal direction passes through a calender or an extruder for coating with a rubber mixture.
  • a calender or an extruder for coating with a rubber mixture.
  • the Bombage and Vulcanization of the tire usually raises / expands the tire in the shoulder region by about 1 to 2% and in the middle region by about 3 to 4% compared to the unvulcanized blank when the blank is wound on a flat drum.
  • 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.
  • the cords should stretch to an elongation of about 4% with relatively little effort and from an elongation of about 6% only with very high force.
  • non-metallic hybrid cords made of yarns of high modulus of elasticity (eg of aromatic polyamide) and of yarns of lower modulus of elasticity (e.g. B. nylon) are twisted together.
  • the cords point in one
  • EP-A-325475 discloses reinforcing cords for elastomeric products comprising a non-metallic cord core and at least two brass-coated steel filaments, the steel filaments being wound in opposite directions helically around the cord core.
  • the cords can z. B. are used for tires and should combine high cut resistance with high rigidity.
  • the cords known from EP-A-325475 have only a low force value of maximum 80 N in the force-elongation diagram at 6% elongation and are therefore not suitable for use as belt bandage material of high-speed tires. Furthermore, it has been found that the crossing points of the steel filaments formed by the opposite wrapping affect the durability of the cords and thus also the durability of the elastomeric product.
  • a reinforcing cord of a non-metallic cord core which is wound helically with at least one metallic filament, wherein the reinforcing cord has the following force-elongation properties: a maximum of 25 N at 1% elongation, a maximum of 40 N at 2% elongation, maximum 60 N at 3% elongation, maximum 95 N at 4% elongation and 'at least 200 N at 6% elongation.
  • the reinforcing cords according to the invention combine the properties of non-metallic yarns or cords forming the cord core in a small expansion range up to about 4% elongation with the high modulus of elasticity of metal filaments in the range from 4% elongation.
  • stretching the reinforcing cords at first only the stretching behavior of the non-metallic cord core comes into play, since the metallic filaments are wound helically and are not present in stretched form. At first, the metallic filaments only change their shape from the helix to a stretched state. Only when the filaments are in stretched form, the metallic filaments contribute significantly to the force-strain behavior.
  • the reinforcing cords of the invention are compared with non-metallic hybrid cords with z. B. aromatic polyamide as yarn with high modulus of elasticity cost.
  • the mechanical properties of the reinforcing cord according to the invention advantageously remain essentially unchanged during long-term use.
  • the reinforcing cord has the following force-elongation properties: a maximum of 25 N at 1% elongation, a maximum of 40 N at 2% elongation, a maximum of 60 N at 3% elongation, a maximum of 95 N at 4% elongation and at least 200 N at 6 % Strain.
  • Cord core at least two metallic filaments helical, wound in parallel in the same direction.
  • the metallic filaments are not twisted together. It has been found that cross-shaped overlays of metallic filaments can lead to durability problems when using the cord by friction. Due to the parallel wrapping such crossing points are excluded.
  • At least two metallic filaments are twisted together (twisted, stranded) and this thread is wound helically around the cord core.
  • this configuration the extensibility of the reinforcing cord can be further increased.
  • non-metallic cord core various textile yarns or cords having sufficient elongation properties in the lower force range can be used.
  • yarns or cords made of polyamide for example nylon 6.6 or nylon 6
  • polyester for example nylon 6.6 or nylon 6
  • non-metallic cord core has a diameter of 0.3 to 0.8 mm, preferably 0.3 to 0.65 mm (tested according to DIN 53855).
  • the metallic filaments wrapped around the cord core are preferably brassed brass filaments.
  • Steel has a particularly high modulus of elasticity and the brass layer contributes to better bonding of the cord to the surrounding elastomer matrix.
  • the steel of the steel filaments has a carbon content of 0.6 to 0.9% in order to ensure sufficient strength of the cords.
  • the metallic filaments preferably have a diameter of 0.15 to 0.25 mm in order to ensure a sufficient force-elongation behavior with the smallest possible diameter of the reinforcing cord.
  • the lay length of the winding of the metallic filaments around the cord core is preferably 5 to 14 mm, more preferably 8 to 13 mm.
  • the filaments can be arranged parallel according to the embodiment according to claim 2, the direction of impact is insignificant, it is only important that when using more than one filament, the direction of impact does not change, d. that is, the filaments do not intersect.
  • the direction of impact is insignificant.
  • the metallic filaments are preformed in the manner and wound around the cord core, that from a 4% elongation of Reinforcement cord the metallic filaments are aligned substantially parallel to the cord axis. From an elongation of the cord of 4% then the transition takes place in such a way that then determine the stretched metallic filaments with their modulus of elasticity substantially the force-strain behavior of the entire reinforcing cord. If such cords are used as belt bandage material for pneumatic vehicle tires, the tires have a particularly good high-speed capability. An elevation of the tire at high speeds is counteracted.
  • the reinforcing cords according to the invention are preferably used as belt bandage material in pneumatic vehicle tires. However, it is also possible to use the reinforcing cords for the carcass, the belt and / or the bead reinforcement of pneumatic vehicle tires.
  • Fig. 1 shows schematically the reinforcing cord according to the invention
  • Fig. 2 shows the force-strain diagram of a reinforcing cord according to the invention
  • the cord core 1 is wound with two steel filaments 2, 2 ', which lie next to each other and touch each other, helically.
  • Fig. 2 the force-elongation diagram of a reinforcing cord determined in accordance with ASTM D 885 is shown, wherein the reinforcing cord had a cord core 1 made of a polyester yarn with a diameter of 0.65 mm, which helically with two steel filaments 2, 2 ' , as shown in Fig. 1, was wrapped.
  • the steel filaments had a diameter of 0.25 mm and were wrapped around the cord core 1 with a lay length of 12 mm.
  • the cord has a moderate force increase in the range between 0 and 4% elongation up to a maximum of 95 N having. This allows when using the cord as Gürtalbandage the required slight elongation in the camber and vulcanization. From an elongation of 4% to the elongation at maximum tensile force then takes a very steep increase in the force-strain curve. Thus, after the production of the tire another survey at high speed counteracted.

Landscapes

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

Abstract

L'invention concerne un câblé de renfort destiné à des produits élastomères, notamment à la bande d'armature de pneus de véhicules, composé d'une âme de câblé non-métallique (1) entourée par un filament métallique (2, 2') en spirale. Ledit câblé de renfort présente les propriétés d'allongement dynamiques suivantes: 25 N maximum pour 1 % d'allongement; 40 N maximum pour 2 % d'allongement; 60 N maximum pour 3 % d'allongement; 95 N maximum pour 4 % d'allongement; et 200 N minimum pour 6 % d'allongement.
EP05752748A 2004-07-24 2005-05-30 Cable de renfort destine a des produits elastomeres Withdrawn EP1773606A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410036129 DE102004036129A1 (de) 2004-07-24 2004-07-24 Verstärkungscord für elastomere Erzeugnisse
PCT/EP2005/052443 WO2006010658A1 (fr) 2004-07-24 2005-05-30 Cable de renfort destine a des produits elastomeres

Publications (1)

Publication Number Publication Date
EP1773606A1 true EP1773606A1 (fr) 2007-04-18

Family

ID=34969899

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05752748A Withdrawn EP1773606A1 (fr) 2004-07-24 2005-05-30 Cable de renfort destine a des produits elastomeres

Country Status (3)

Country Link
EP (1) EP1773606A1 (fr)
DE (1) DE102004036129A1 (fr)
WO (1) WO2006010658A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112014014311B1 (pt) * 2011-12-27 2020-10-13 Pirelli Tyre S.P.A. pneu para motocicleta
US20160318343A1 (en) 2013-12-23 2016-11-03 Pirelli Tyre S.P.A. Tyre for heavy load vehicle wheels
KR101869147B1 (ko) * 2016-01-25 2018-06-19 한국타이어 주식회사 하이브리드 코드 및 이를 사용한 타이어
FR3092343A1 (fr) * 2019-02-05 2020-08-07 Compagnie Generale Des Etablissements Michelin Câble multitorons de structure 1xN à haute énergie à rupture
IT202000014521A1 (it) 2020-06-17 2021-12-17 Pirelli Pneumatico per ruote di veicoli

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0538075Y2 (fr) * 1988-01-20 1993-09-27
JP2757940B2 (ja) * 1988-03-28 1998-05-25 住友ゴム工業株式会社 空気入りタイヤ
JPH0641881A (ja) * 1992-05-20 1994-02-15 Bridgestone Corp エラストマー製品補強用複合コード
JP3118958B2 (ja) * 1992-06-04 2000-12-18 住友電気工業株式会社 ゴム物品補強用複合コード
DE10144833A1 (de) * 2001-09-12 2003-04-30 Continental Ag Verstärkungskord
FR2841573A1 (fr) * 2002-06-26 2004-01-02 Michelin Soc Tech Cables hybrides a couches utilisables pour renforcer des pneumatiques

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006010658A1 *

Also Published As

Publication number Publication date
DE102004036129A1 (de) 2006-02-16
WO2006010658A1 (fr) 2006-02-02

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