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WO2020080440A1 - Corps composite câblé métallique/élastomère et pneu utilisant ce dernier - Google Patents

Corps composite câblé métallique/élastomère et pneu utilisant ce dernier Download PDF

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Publication number
WO2020080440A1
WO2020080440A1 PCT/JP2019/040761 JP2019040761W WO2020080440A1 WO 2020080440 A1 WO2020080440 A1 WO 2020080440A1 JP 2019040761 W JP2019040761 W JP 2019040761W WO 2020080440 A1 WO2020080440 A1 WO 2020080440A1
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WO
WIPO (PCT)
Prior art keywords
metal
elastomer
cord
metal cord
filaments
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/JP2019/040761
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English (en)
Japanese (ja)
Inventor
一樹 上村
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.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
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 Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP2020553262A priority Critical patent/JPWO2020080440A1/ja
Publication of WO2020080440A1 publication Critical patent/WO2020080440A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • D07B1/0646—Reinforcing cords for rubber or plastic articles comprising longitudinally preformed wires
    • 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
    • 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
    • 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
    • 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
    • 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
    • D07B2201/2033—Parallel wires

Definitions

  • the present invention relates to an elastomer-metal cord composite and a tire using the same, and more specifically, an elastomer-metal cord composite obtained by coating a metal cord composed of a bundle of metal filaments aligned without twisting with an elastomer, And a tire using the same.
  • a carcass including reinforcing cords embedded along the meridian direction of the ring-shaped tire body is arranged, and a belt layer is arranged on the tire radial outside of the carcass.
  • This belt layer is usually formed by using an elastomer-metal cord composite obtained by coating a metal cord such as steel with an elastomer, and imparts load resistance, traction resistance and the like to the tire.
  • the metal filaments are displaced from each other during rolling of the tire, and the in-plane rigidity (rigidity in the tire ground contact surface) is reduced, resulting in improved steering stability. I can't. Further, as the belt treat becomes thinner, the separation resistance of the belt layer deteriorates.
  • Patent Document 1 Although the BES resistance is examined, the steering stability and the separation resistance of the belt layer are not examined. Therefore, it has been required to realize a reinforcing material that can satisfy these required performances.
  • the object of the present invention is to provide a metal cord comprising a bundle of a plurality of metal filaments that are aligned without being twisted, is covered with an elastomer, and various tire performances such as steering stability and separation resistance of a belt layer.
  • An object of the present invention is to provide an elastomer-metal cord composite capable of improving the above-mentioned properties, and a tire using the same.
  • the above problem was solved by setting the bundle structure of the metal filaments as follows and by prescribing the ratio of the cross-sectional area of the metal filaments included in the cross section of the metal cord to a predetermined value.
  • the inventors have found that it is possible to complete the present invention.
  • the elastomer-metal cord composite of the present invention is an elastomer-metal cord composite in which a metal cord composed of a bundle in which a plurality of metal filaments are not twisted and aligned in a row is coated with an elastomer.
  • a metal cord composed of a bundle in which a plurality of metal filaments are not twisted and aligned in a row is coated with an elastomer.
  • the wire diameter of the metal filament is D (mm), the distance from the surface of the metal filament constituting one end of the metal cord to the surface of the other metal filament measured in a direction orthogonal to the extending direction of the metal cord.
  • FIG. 1 is an explanatory diagram of the metal filament showing the definition of the metal filament forming amount h and the forming pitch p, and the forming amount h refers to the width of fluctuation that does not include the wire diameter of the metal filament 1.
  • the amount h of the metal filament 1 to be imprinted is measured by projecting the metal filament 1 after imprinting with a projector and projecting a projected image of the metal filament on a screen or the like.
  • the metal filament in the metal cord is imprinted in the width direction of the metal cord. Further, in the elastomer-metal cord composite of the present invention, it is preferable that the elastomer coverage of the adjacent metal filaments on the side surface in the width direction of the metal cord is 10% or more per unit length.
  • At least one of the metal filaments in the metal cord is preferably a substantially straight metal filament. Furthermore, in the elastomer-metal cord composite of the present invention, it is preferable that the straight metal filaments and the patterned metal filaments are alternately arranged. Furthermore, in the elastomer-metal cord composite of the present invention, the metal filaments arranged at both ends of the metal cord are preferably the straight metal filaments.
  • the metal filament has a mold amount of 0.03 mm or more and 0.30 mm or less and the metal filament has a mold pitch of 2 mm or more and 30 mm or less. .
  • the elastomer coverage means, for example, when rubber is used as the elastomer and steel cord is used as the metal cord, the rubber cord obtained by coating the steel cord with rubber and vulcanizing is obtained.
  • the steel cord is pulled out from the composite, and the length of the side surface of the steel filament in the width direction of the metal cord, which is covered with the rubber that has penetrated into the gap between the steel filaments that make up the steel cord, is measured and calculated based on the following formula It means the average of the values.
  • Elastomer coverage (rubber coating length / sample length) x 100 (%) The same calculation can be performed when an elastomer other than rubber is used as the elastomer and when a metal cord other than the steel cord is used as the metal cord.
  • a straight metal filament refers to a metal filament that is not intentionally modeled and is substantially unmolded.
  • the tire of the present invention is characterized by using the elastomer-metal cord composite of the present invention.
  • a metal cord composed of a bundle of a plurality of metal filaments drawn without being twisted is covered with an elastomer, and various tire performances such as steering stability and belt layer separation resistance are improved. It was possible to provide a possible elastomer-metal cord composite and a tire using the same.
  • FIG. 3 is a partial cross-sectional view in the width direction of the elastomer-metal cord composite according to the preferred embodiment of the present invention.
  • FIG. 3 is a schematic plan view of a metal cord in an elastomer-metal cord composite according to a preferred embodiment of the present invention.
  • FIG. 3 is a schematic cross-sectional view in the width direction of a metal cord in an elastomer-metal cord composite according to a preferred embodiment of the present invention.
  • FIG. 4 is an explanatory diagram relating to the definition of the ratio of the cross-sectional area of the metal filament included in the cross section of the metal cord in the present invention.
  • 1 is a schematic one-sided cross-sectional view of a tire according to a preferred embodiment of the present invention.
  • FIG. 2 is a partial cross-sectional view in the width direction of the elastomer-metal cord composite according to a preferred embodiment of the present invention
  • FIG. 3 is an elastomer-metal cord according to a preferred embodiment of the present invention
  • FIG. 4 is a schematic plan view of the metal cord in the composite
  • FIG. 4 is a width-direction schematic cross-sectional view of the metal cord in the elastomer-metal cord composite according to a preferred embodiment of the present invention.
  • the elastomer-metal cord composite 10 of the present invention has a plurality of metal filaments 1 covered with an elastomer 3 on a metal cord 2 formed of a bundle in which the metal filaments 1 are not twisted and aligned in a line.
  • the number of the metal filaments 1 is preferably 2 or more, more preferably 5 or more, preferably 20 or less, more preferably 18 or less, further preferably 15 or less, particularly preferably
  • the metal cord 2 is composed of a bundle of 12 or less. In the illustrated example, five metal filaments 1 are aligned without being twisted to form a metal cord 2.
  • the metal cord 2 has at least one pair of adjacent metal filaments 1 having different at least one of the molding amount and the molding pitch.
  • the phases of the two do not match each other.
  • the elastomer coating region is eliminated, and the elastomer can be sufficiently permeated between the adjacent metal filaments 1.
  • the steel cord can be out-of-plane deformed at the time of compression input, and the steel cord can be prevented from being broken.
  • the corrosion resistance is greatly improved.
  • the adjacent metal filaments 1 are constrained by the elastomer, by using the elastomer-metal cord composite 10 of the present invention as a cord for a belt of a tire, the adjacent metal filaments can be mutually protected even when the tire is rolling. As a result, the in-plane rigidity of the belt can be improved and steering stability can be improved.
  • FIG. 5 shows an explanatory diagram relating to the definition of the ratio of the cross-sectional area of the metal filament contained in the cross section of the metal cord in the present invention.
  • seven metal filaments 1 are not twisted but aligned to form a metal cord 2.
  • three metal filaments 1a and four metal filaments 1a are formed.
  • the non-molded straight metal filaments 1b are arranged alternately on both sides of the metal filaments 1b (molding amount 0 mm, mold pitch ⁇ mm).
  • the wire diameter of the metal filament 1 is D (mm)
  • the metal filament 1 at one end constituting the metal cord 2 is measured in a direction orthogonal to the extending direction of the metal cord 2.
  • the cord width which is the maximum value of the distance from the surface to the surface of the metal filament 1 at the other end
  • N the number
  • the following formula ( 1) 0.40 ⁇ [(D / 2) 2 ⁇ ⁇ ⁇ N] / (D ⁇ A) ⁇ 0.75 (1) (However, D, A> 0, and N is an integer).
  • the above formula (1) defines the ratio of the cross-sectional area of the metal filament 1 occupying one of the metal cords 2 with the cross-sectional area of the dotted line portion in the figure as the cross-sectional area of the metal cord 2. That is, the cross-sectional area (cross-sectional area of the metal filament 1 + cross-sectional area of the elastomer 3) of the dotted line portion in the drawing is represented by the denominator (D ⁇ A) in the above formula (1) and is included in the dotted line portion of the drawing.
  • the cross-sectional area of the metal filament 1 is represented by [(D / 2) 2 ⁇ ⁇ ⁇ N] of the molecule in the above formula (1).
  • the metal cord 2 including the predetermined pair of metal filaments 1 is used, and the cross-sectional area ratio of the metal filaments contained in the cross section of the metal cord is predetermined.
  • the metal cord 2 including the predetermined pair of metal filaments 1 is used, and the cross-sectional area ratio of the metal filaments contained in the cross section of the metal cord is predetermined.
  • adjacent metal filaments 1 are different from each other in at least one of the molding amount and the molding pitch, particularly the molding amount and the molding pitch in the direction perpendicular to the extending direction of the metal filament 1. At least one pair of each other is included. In particular, at least 50% or more of the pair of metal filaments 1 are different from each other in at least one of the amount and pitch of the metal filaments 1 adjacent to each other in the direction perpendicular to the extending direction of the metal filaments 1. Is preferred.
  • the typed metal filaments 1a and the non-typed metal filaments 1b are alternately arranged, but different typed metal filaments are alternately arranged.
  • metal filaments having different embossing pitches may be alternately arranged.
  • the arrangement of the metal filaments forming the bundle is preferably straight metal filaments whose both sides are unshaped.
  • the existence of continuous non-elastomeric coating regions between adjacent metal filaments is eliminated, corrosion resistance is ensured, and the in-plane rigidity of the belt is improved and the steering stability is improved.
  • the elastomer coverage on the side surface in the width direction of the metal cord 2 of the adjacent metal filaments 1 is preferably 10% or more per unit length, more preferably 20% or more.
  • the coating is more preferably 50% or more, and particularly preferably 80% or more. Most preferably, it is in a state of being covered by 90% or more.
  • the metal filament 1 can be shaped in a two-dimensional shape in a zigzag shape or a wavy shape as illustrated. However, from the viewpoint of weight reduction, it is preferable that the metal filaments 1 do not overlap each other in the thickness direction of the metal cord 2.
  • the amount of the metal filament 1 imprinted is preferably 0.03 mm or more and 0.30 mm or less.
  • the imprinting amount is 0.30 mm or less, the strength of the elastomer-metal cord composite can be secured, and the effects of the present invention can be sufficiently obtained.
  • the mold amount is preferably 0.03 mm or more and 0.30 mm or less, and more preferably 0.03 mm. Or more and 0.25 mm or less, and most preferably 0.03 mm or more and 0.20 mm or less.
  • the mold pitch of the metal filament 1 is preferably 2 mm or more and 30 mm or less, more preferably 2 mm or more and 20 mm or less, and most preferably 3 mm or more and 15 mm or less.
  • the metal filament 1a that is shaped is shaped in the width direction of the metal cord 2. In this way, it is preferable to set the molding direction of the metal filaments 1 adjacent to each other to the width direction of the metal cord 2 because the weight is excellent.
  • the metal filaments 1 in the metal cord 2 is a substantially straight metal filament.
  • the phases of the two do not match, so that they are not in point contact with each other. Become. Therefore, since the amount of the elastomer penetrating between the metal filaments 1a and 1b is large, the elastomer coverage of the adjacent metal filaments 1a and 1b on the side surface in the width direction of the metal cord 2 is high, and the non-elastomer coating region varies. Can be suppressed to a minimum, and the effects of the present invention can be satisfactorily obtained.
  • the metal filaments 1 arranged at both ends of the metal cord 2 are straight metal filaments, whereby the distance w between the adjacent metal cords 2 in the elastomer is increased. Since it can be widened, the durability can be improved. More preferably, as shown in FIG. 2, straight metal filaments 1b that are not shaped and metal filaments 1a that are shaped are arranged alternately.
  • the metal filament 1 is generally a steel, that is, a linear wire containing iron as a main component (the mass of iron is more than 50 mass% based on the total mass of the metal filament). It means a metal, and may be composed only of iron, or may contain a metal other than iron, such as zinc, copper, aluminum or tin.
  • the surface state of the metal filament 1 is not particularly limited, but for example, the following forms can be adopted. That is, as the metal filament 1, the N atom on the surface is 2 atom% or more and 60 atom% or less, and the Cu / Zn ratio on the surface is 1 or more and 4 or less. In addition, as the metal filament 1, the amount of phosphorus contained as an oxide in the outermost layer of the filament up to 5 nm inward in the radial direction of the filament from the filament surface is 7.0 atom% in the ratio of the total amount excluding the amount of C. The following cases may be mentioned.
  • the surface of the metal filament 1 may be plated.
  • the type of plating is not particularly limited, and examples thereof include zinc (Zn) plating, copper (Cu) plating, tin (Sn) plating, brass (copper-zinc (Cu-Zn)) plating, and bronze (copper-tin ( In addition to Cu-Sn)) plating and the like, there are ternary plating such as copper-zinc-tin (Cu-Zn-Sn) plating and copper-zinc-cobalt (Cu-Zn-Co) plating. Among these, brass plating and copper-zinc-cobalt plating are preferable.
  • the brass-plated metal filament has excellent adhesion to rubber.
  • the ratio of copper and zinc (copper: zinc) is usually 60 to 70:30 to 40 on a mass basis, and in copper-zinc-cobalt plating, copper is usually 60 to 75 mass%, Cobalt is 0.5 to 10 mass%.
  • the thickness of the plating layer is generally 100 nm or more and 300 nm or less.
  • the wire diameter, tensile strength, and cross-sectional shape of the metal filament 1 are not particularly limited.
  • the wire diameter D of the metal filament 1 can be 0.15 mm or more and 0.40 mm or less.
  • the metal filament 1 one having a tensile strength of 2500 MPa (250 kg / mm 2 ) or more can be used.
  • the cross-sectional shape of the metal filament 1 in the width direction is not particularly limited, and may be an elliptical shape, a rectangular shape, a triangular shape, a polygonal shape, or the like, but a circular shape is preferable.
  • a wrapping filament spiral filament
  • the elastomer 3 for coating the metal cord 2 is not particularly limited, and rubber or the like conventionally used for coating the metal cord can be used. it can.
  • natural rubber NR
  • isoprene rubber IR
  • epoxidized natural rubber styrene butadiene rubber
  • SBR styrene butadiene rubber
  • BR butadiene rubber
  • NBR nitrile rubber
  • Hydrogenated NBR hydrogenated SBR and other diene rubbers and hydrogenated products thereof
  • elastomers may be used alone or in combination of two or more.
  • the elastomer may be appropriately blended with an antioxidant, zinc oxide, stearic acid and the like which are commonly used in rubber products such as tires and conveyor belts.
  • the elastomer-metal cord composite of the present invention can be manufactured by a known method.
  • a steel cord as a metal cord composed of a bundle of a plurality of metal filaments which are not twisted and twisted can be produced by coating in parallel with a rubber at a predetermined interval, and a sample for evaluation is then prepared. It can be produced by vulcanizing under general conditions.
  • the metal filament can be molded by a conventional molding machine according to a conventional method.
  • FIG. 6 shows a schematic one-side sectional view of a tire according to a preferred embodiment of the present invention.
  • the tire 100 of the present invention is formed by using the elastomer-metal cord composite 10 of the present invention, which can improve steering stability, corrosion resistance, and belt layer separation resistance.
  • the illustrated tire 100 includes a tread portion 101 forming a ground contact portion, a pair of sidewall portions 102 continuously extending inward in the tire radial direction on both side portions of the tread portion 101, and an inner circumference of each sidewall portion 102.
  • the pneumatic tire is provided with a bead portion 103 that is continuous on the side. Examples of the tire 100 of the present invention include tires for passenger cars and tires for trucks and buses.
  • the tread portion 101, the sidewall portion 102, and the bead portion 103 are reinforced by a carcass 104 formed of one carcass layer extending in a toroidal shape from one bead portion 103 to the other bead portion 103.
  • the tread portion 101 is reinforced by a belt 105 including at least two layers, which are two layers in the illustrated example, a first belt layer 105a and a second belt layer 105b, which are arranged outside the crown region of the carcass 104 in the tire radial direction. Has been done.
  • the carcass 104 may have a plurality of carcass layers, and an organic fiber cord extending in a direction substantially orthogonal to the tire circumferential direction, for example, an angle of 70 ° or more and 90 ° or less can be preferably used.
  • the elastomer-metal cord composite 10 of the present invention can be used for the first belt layer 105a and the second belt layer 105b.
  • the thickness of the first belt layer 105a and the second belt layer 105b can be reduced, and the weight of the tire can be reduced.
  • the elastomer-metal cord composite 10 of the present invention for a belt cord it is possible to simultaneously improve steering stability, corrosion resistance, and belt layer separation resistance.
  • the cord angle of the belt 105 can be 30 ° or less with respect to the tire circumferential direction.
  • the tire 100 of the present invention may be any tire as long as it uses the elastomer-metal cord composite 10 of the present invention, and other specific tire structures are not particularly limited. Further, the application location of the elastomer-metal cord composite 10 of the present invention is not limited to the belt 105. For example, it may be used as a belt reinforcing layer arranged on the outer side in the tire radial direction of the belt 105, or as other reinforcing members. As the gas with which the tire 100 is filled, in addition to normal air or air whose oxygen partial pressure is adjusted, an inert gas such as nitrogen, argon, or helium can be used.
  • an inert gas such as nitrogen, argon, or helium
  • the elastomer coverage is the steel that constitutes the steel cord by coating the steel cord with rubber, vulcanizing it at 160 ° C. for 10 to 15 minutes, and then pulling out the steel cord from the obtained rubber-steel cord composite.
  • the formula for calculating the elastomer coverage is as follows.
  • Elastomer coverage (rubber coating length / sample length) x 100 (%)
  • the rubber coating length is the length of the region where the steel filament surface is completely covered with rubber when the pulled-out steel cord is observed from the direction orthogonal to the cord longitudinal direction. The higher the number, the higher the adhesive strength and the better the performance.
  • ⁇ Steering stability> The in-plane rigidity was evaluated using the crossed belt layer sample produced by using the obtained rubber-steel cord composite, and used as an index of steering stability. A jig was placed at the lower two points and the upper one point of the intersecting belt layer sample, and the load when the jig was pushed in from the upper one point was evaluated as the in-plane rigidity. The results were evaluated with Comparative Example 1 as the reference x, when they were equivalent, they were evaluated as x, when they were excellent, they were evaluated as ⁇ , and when they were very excellent, they were evaluated as ⁇ .
  • Example 1 was also excellent in separation resistance when the elastomer-metal cord composite of Comparative Example 1 was used as a reference.
  • the structure of the bundle of metal filaments, and the ratio of the cross-sectional area of the metal filaments contained in the cross section of the metal cord is defined as predetermined, so that the steering stability and the belt layer An elastomer-metal cord composite and a tire capable of improving various tire performances such as resistance to separation are obtained.

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

Abstract

La présente invention concerne : un corps composite câblé métallique/élastomère qui est capable d'améliorer diverses propriétés d'un pneu telles que la stabilité de direction et la résistance à la séparation de couches de ceinture ; et un pneu qui utilise ce corps composite câblé métallique/élastomère. Un mode de réalisation de la présente invention concerne un corps composite câblé métallique/élastomère (10) qui est obtenu par le recouvrement, avec un élastomère (3), d'un câblé métallique (2) qui est composé d'un faisceau d'une pluralité de filaments métalliques qui sont agencés dans une rangée sans être torsadés. Au moins une paire de filaments métalliques adjacents qui sont différents les uns des autres en termes de quantité de formation de motifs et/ou de pas de formation de motifs est présente dans le câblé métallique ; et si D est le diamètre de fil des filaments métalliques, A est la largeur de câblé qui est la valeur maximale de la distance de la surface d'un filament métallique au niveau d'une extrémité du câblé métallique à la surface d'un filament métallique au niveau de l'autre extrémité du câblé métallique telle que mesurée dans une direction qui est perpendiculaire à la direction d'extension du câblé métallique, et N est le nombre de filaments métalliques qui constituent le câblé métallique, D, A et N satisfaisant l'expression relationnelle 0,40 ≤ ((D/2)2 × π × N)/(D × A) ≤ 0,75.
PCT/JP2019/040761 2018-10-17 2019-10-16 Corps composite câblé métallique/élastomère et pneu utilisant ce dernier Ceased WO2020080440A1 (fr)

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JP2020553262A JPWO2020080440A1 (ja) 2018-10-17 2019-10-16 エラストマー−金属コード複合体およびこれを用いたタイヤ

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JP2018-196206 2018-10-17

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Publication number Priority date Publication date Assignee Title
JPH06235179A (ja) * 1993-02-09 1994-08-23 Kokoku Kousensaku Kk スチールコード及びこのスチールコードを用いたゴム複合体
JPH07145578A (ja) * 1993-11-22 1995-06-06 Tokyo Seiko Co Ltd 形付け素線収束コード及び車両用タイヤ
JPH07157986A (ja) * 1993-12-02 1995-06-20 Tokyo Seiko Co Ltd 形付け素線収束コード及び車両用タイヤ
JPH08300905A (ja) * 1995-05-01 1996-11-19 Yokohama Rubber Co Ltd:The 空気入りラジアルタイヤ
JPH1121776A (ja) * 1997-07-04 1999-01-26 Tokyo Seiko Co Ltd ゴム補強用の収束スチールコード及び収束スチールコード・ゴム複合体
JP2002339276A (ja) * 2001-05-09 2002-11-27 Sumitomo Rubber Ind Ltd 金属コード及びそれを用いた空気入りタイヤ
EP1900549A1 (fr) * 2006-09-15 2008-03-19 NV Bekaert SA Filament en acier pour armature de sommet de pneumatiques
US20100154956A1 (en) * 2008-12-19 2010-06-24 Roland Willibrord Krier Alternating straight/wavy reinforcement structure for pneumatic tire
WO2018190308A1 (fr) * 2017-04-11 2018-10-18 株式会社ブリヂストン Composite élastomère-fil câblé métallique et pneu l'utilisant
JP2018176960A (ja) * 2017-04-11 2018-11-15 株式会社ブリヂストン エラストマー−金属コード複合体およびタイヤ

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06235179A (ja) * 1993-02-09 1994-08-23 Kokoku Kousensaku Kk スチールコード及びこのスチールコードを用いたゴム複合体
JPH07145578A (ja) * 1993-11-22 1995-06-06 Tokyo Seiko Co Ltd 形付け素線収束コード及び車両用タイヤ
JPH07157986A (ja) * 1993-12-02 1995-06-20 Tokyo Seiko Co Ltd 形付け素線収束コード及び車両用タイヤ
JPH08300905A (ja) * 1995-05-01 1996-11-19 Yokohama Rubber Co Ltd:The 空気入りラジアルタイヤ
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JP2018176960A (ja) * 2017-04-11 2018-11-15 株式会社ブリヂストン エラストマー−金属コード複合体およびタイヤ

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