WO2015016791A1 - Cap ply reinforcement strip in pneumatic tire - Google Patents

Cap ply reinforcement strip in pneumatic tire Download PDF

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Publication number
WO2015016791A1
WO2015016791A1 PCT/TR2014/000193 TR2014000193W WO2015016791A1 WO 2015016791 A1 WO2015016791 A1 WO 2015016791A1 TR 2014000193 W TR2014000193 W TR 2014000193W WO 2015016791 A1 WO2015016791 A1 WO 2015016791A1
Authority
WO
WIPO (PCT)
Prior art keywords
cap ply
reinforcement strip
ply reinforcement
pneumatic tires
nylon
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/TR2014/000193
Other languages
French (fr)
Inventor
Sadettin Fidan
Kürşat AKSOY
Bekir Anıl MERTOL
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.)
Kordsa Teknik Tekstil AS
Original Assignee
Kordsa Global Endustriyel Iplik ve Kord Bezi Sanayi ve Ticaret AS
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 Kordsa Global Endustriyel Iplik ve Kord Bezi Sanayi ve Ticaret AS filed Critical Kordsa Global Endustriyel Iplik ve Kord Bezi Sanayi ve Ticaret AS
Priority to KR1020167002355A priority Critical patent/KR101862255B1/en
Priority to RU2016106327A priority patent/RU2633147C2/en
Priority to SI201430362T priority patent/SI3027425T1/en
Priority to EP14741435.3A priority patent/EP3027425B1/en
Priority to RS20171100A priority patent/RS56557B1/en
Priority to US14/909,140 priority patent/US10315464B2/en
Priority to ES14741435.3T priority patent/ES2642127T3/en
Priority to CN201480043147.7A priority patent/CN105579249B/en
Publication of WO2015016791A1 publication Critical patent/WO2015016791A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B60C9/1807—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers comprising fabric reinforcements
    • 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/08—Building 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
    • B60C9/005—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
    • B60C9/02—Carcasses
    • B60C9/10—Carcasses the reinforcing cords within each carcass ply arranged in a crossing relationship
    • B60C9/11—Woven, braided, or knitted plies
    • 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
    • B60C9/2204—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 obtained by circumferentially narrow strip winding
    • 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
    • B60C2009/0035—Reinforcements made of organic materials, e.g. rayon, cotton or silk
    • 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
    • B60C2009/0071—Reinforcements or ply arrangement of pneumatic tyres characterised by special physical properties of the reinforcements
    • 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
    • B60C2009/0071—Reinforcements or ply arrangement of pneumatic tyres characterised by special physical properties of the reinforcements
    • B60C2009/0078—Modulus
    • 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
    • B60C2009/0071—Reinforcements or ply arrangement of pneumatic tyres characterised by special physical properties of the reinforcements
    • B60C2009/0092—Twist structure
    • 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
    • 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
    • B60C2009/2252—Physical properties or dimension of the zero degree ply cords
    • B60C2009/2261—Modulus of the 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
    • B60C2009/2252—Physical properties or dimension of the zero degree ply cords
    • B60C2009/2266—Density of the cords in width direction
    • 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
    • B60C2009/2252—Physical properties or dimension of the zero degree ply cords
    • B60C2009/2285—Twist structures
    • 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
    • B60C9/0064—Reinforcements comprising monofilaments

Definitions

  • the present invention relates to cap ply reinforcement strip in pneumatic tire which is ready-to-use plain woven fabric and composed of the hybrid cords as warp and the texturized yarns as weft
  • hybrid cords as cap ply reinforcement by being wound on the belt package spirally as strips has been used for many years by several companies in order to improve high speed durability and handling performance in pneumatic radial tires.
  • the said hybrid cord strips are obtained by cutting calendered (rubberized) cord fabric in strips or rubberizing parallel single cords in a certain width during extrusion process.
  • Hybrid cords are composed of at least two yarns (plies) having different properties (such as elastic modulus).
  • aramide-nylon hybrid cords are commonly used as cap ply reinforcement strip in pneumatic tires.
  • the hybrid cords composed of two different yarns generally have two different tangent modulus zones.
  • the initial low modulus zone is required for avoiding tight cord formations in geometric expansions during preparation and vulcanization of green tire and preventing the tight cord formations which could have cutting effect in the rubber.
  • the high modulus zone is needed to prevent tire growth generated by the steel belt package due to centrifugal force at high speeds. The tire growth causes the belt edge separation and cracks formed at the bottom of the tread grooves.
  • the objective of the present invention is to provide cap ply reinforcement strip in pneumatic tires wherein the parallel hybrid cord warps are plain woven with texturized weft yarns.
  • Another objective of the present invention is to provide a cap ply reinforcement strip in pneumatic tires wherein the tire production process is simplified by eliminating calendering and strip preparation stages by means of its dense (rubber- free)structure and/or the existing adhesive filling between the warps.
  • a further objective of the present invention is to provide cap ply reinforcement strip in pneumatic tires which enables to improve rolling resistance of the tire and decrease fuel consumption by elimination the need for rubber coating on the reinforcement strip by means of its dense structure(rubber-free) and/or the existing adhesive filling between the warps.
  • Yet another objective of the present invention is to provide a cap ply reinforcement strip in pneumatic tires wherein rubber transfer from the bottom side of the tread and upper side of the belt to the spacings between the parallel hybrid cords during vulcanization process is prevented by means of the adhesive RFL filling the spacing between parallel hybrid cords used as warp.
  • Figure 1 is the view of the inventive hybrid cord cap ply reinforcement strip having spacing between the warp cords (Version-1 , A ⁇ 1.5mm).
  • Figure 2 is the view of the inventive hybrid cord cap ply reinforcement strip having zero or minimum spacing between the warp cords (Version-2,
  • the inventive cap ply reinforcement strip in pneumatic tires (1) which eliminates calendering and strip preparation steps and enables to decrease the rolling resistance of the tire by eliminating the need for rubber coating and decrease the fuel consumption; comprises
  • Hybrid cord warps (3) which are composed of at least one yarn with high modulus (4) and one yarn with low modulus (5), form plain woven structure by being passed vertically through the texturized weft yarns (2) parallel to each other, the spacings (A) between which are minimized and which are completely or partially filled with a tacky material (tacky RFL).
  • the width of the inventive cap ply reinforcement strip (1) varies between 5 to 30mm, preferably 8 to 15mm.
  • the number of hybrid cord warps (3) within the width of 10mm strip can vary between 5 to 20, or 50 to 200 within the width of 1 decimeter.
  • the spacing between the hybrid cord warps (3) in the cap ply reinforcement strip (1) can vary between 0 to 1.5mm, preferably 0.1 to 0.5mm.
  • the cord twists of the hybrid cords (3) can vary between 100 to 800tpm (twist per meter), preferably 250 to 350tpm.
  • the linear densities of the ply yarns with low and high modulus in the hybrid cord warps (3) can vary between 200 to 3000 dtex, preferably 800 to 2000 dtex (the linear density in the yarns is expressed with dtex unit). Dtex is the expression of a 10.000 meter long yarn weight as gram. For example, 1400 dtex yarn means that the weight of the said 10.000 meter yarn is 1400 gram.
  • the yarns with high modulus (4) of the hybrid cords (3) used in the inventive cap ply reinforcement strip (1) can be aramide, carbon fiber, aromatic polyester such as vectran, rayon or PEN (polyethylene naphthalate), but it is preferably aramide.
  • the yarns with low modulus (5) in the hybrid cords can be nylon 6.6, nylon 6 or PET (polyethylene terephthalate), but it is preferably nylon 6.6.
  • the hybrid cords (3) are composed of yarns (4, 5) with different elastic modulus.
  • the texturized weft yarns (2) involving high amounts of RFL form strong bonds at the contact points with the warps (3). Therefore, separation of the hybrid cords (3) is eliminated.
  • the linear densities of the texturized weft yarns (2) can vary between 200 to 2000 dtex, preferably 500 to 1500 dtex.
  • the texturized yarns (2) used as weft can be twisted or non-twisted.
  • the number of wefts in a 10cm long strip can be 5 to 30, preferably 10 to 20.
  • the spacing (A) between the hybrid cords (3) can be empty or partially or totally filled with RFL adhesive.
  • the amount of RFL dip (Dip Pick Up, DPU%) in the cap ply reinforcement strip (1) can be 5% to 50% (by weight), preferably 5% to 25%, or more preferably 10% to 15%.
  • the reinforcement strip (1) comprises tacky adhesive on its outer surface which is needed for the tire production process. Texturized weft yarns (2) comprising high amounts of adhesive RFL make the parallel hybrid cords (3) stable by forming strong bonds at warp/weft contact points and fixing their positions. Therefore, the fraying and separation of the warps (3) in the strip (1) is prevented.
  • the adhesive RFL filling the spacing between the parallel hybrid cords (3) used as warp, rubber transfer to the said spacings from the upper belt and the lower parts of the tread is eliminated during vulcanization process.
  • the cap ply strip (1) can be spirally wound on the belt package in the tire with 0 to 5 degrees angle with the equatorial plane.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Tires In General (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Woven Fabrics (AREA)

Abstract

The cap ply reinforcement strip is a ready-to-use plain woven fabric and is composed of hybrid cord warps (3) and texturized weft yarns (2). The cap ply reinforcement strip for pneumatic tires (1) eliminates calendering and strip preparation steps by eliminating the need for rubber coating and decreases the rolling resistance of the tire and the fuel consumption.

Description

DESCRIPTION
CAP PLY REINFORCEMENT STRIP IN PNEUMATIC TIRE
Field of the Invention
The present invention relates to cap ply reinforcement strip in pneumatic tire which is ready-to-use plain woven fabric and composed of the hybrid cords as warp and the texturized yarns as weft
Background of the Invention
It is known that in radial tires the reinforcing material placed at small angles with the equatorial plane on belt package enhances the performance of the radial tire especially at high speeds.
Using hybrid cords as cap ply reinforcement by being wound on the belt package spirally as strips has been used for many years by several companies in order to improve high speed durability and handling performance in pneumatic radial tires. The said hybrid cord strips are obtained by cutting calendered (rubberized) cord fabric in strips or rubberizing parallel single cords in a certain width during extrusion process.
Hybrid cords are composed of at least two yarns (plies) having different properties (such as elastic modulus). For example, aramide-nylon hybrid cords are commonly used as cap ply reinforcement strip in pneumatic tires. The hybrid cords composed of two different yarns generally have two different tangent modulus zones. The initial low modulus zone is required for avoiding tight cord formations in geometric expansions during preparation and vulcanization of green tire and preventing the tight cord formations which could have cutting effect in the rubber. The high modulus zone is needed to prevent tire growth generated by the steel belt package due to centrifugal force at high speeds. The tire growth causes the belt edge separation and cracks formed at the bottom of the tread grooves. Summary of the Invention
The objective of the present invention is to provide cap ply reinforcement strip in pneumatic tires wherein the parallel hybrid cord warps are plain woven with texturized weft yarns.
Another objective of the present invention is to provide a cap ply reinforcement strip in pneumatic tires wherein the tire production process is simplified by eliminating calendering and strip preparation stages by means of its dense (rubber- free)structure and/or the existing adhesive filling between the warps.
A further objective of the present invention is to provide cap ply reinforcement strip in pneumatic tires which enables to improve rolling resistance of the tire and decrease fuel consumption by elimination the need for rubber coating on the reinforcement strip by means of its dense structure(rubber-free) and/or the existing adhesive filling between the warps.
Yet another objective of the present invention is to provide a cap ply reinforcement strip in pneumatic tires wherein rubber transfer from the bottom side of the tread and upper side of the belt to the spacings between the parallel hybrid cords during vulcanization process is prevented by means of the adhesive RFL filling the spacing between parallel hybrid cords used as warp.
Detailed Description of the Invention
"Cap ply reinforcement strip in pneumatic tires" developed to fulfill the objective of the present invention is illustrated in the accompanying figures wherein,
Figure 1 is the view of the inventive hybrid cord cap ply reinforcement strip having spacing between the warp cords (Version-1 , A<1.5mm).
Figure 2 is the view of the inventive hybrid cord cap ply reinforcement strip having zero or minimum spacing between the warp cords (Version-2,
AO. lmm). The components shown in the figures are each given reference numbers as follows:
1. Cap ply reinforcement strip
2. Texturized weft yarn
3. Hybrid cord warp
4. Yarn with high modulus
5. Yarn with low modulus
A. Spacing
The inventive cap ply reinforcement strip in pneumatic tires (1) which eliminates calendering and strip preparation steps and enables to decrease the rolling resistance of the tire by eliminating the need for rubber coating and decrease the fuel consumption; comprises
- Texturized weft yarns (2) which are used as support members enabling the base structure to be kept together and which are parallel to each other with intervals,
- Hybrid cord warps (3) which are composed of at least one yarn with high modulus (4) and one yarn with low modulus (5), form plain woven structure by being passed vertically through the texturized weft yarns (2) parallel to each other, the spacings (A) between which are minimized and which are completely or partially filled with a tacky material (tacky RFL).
The width of the inventive cap ply reinforcement strip (1) varies between 5 to 30mm, preferably 8 to 15mm. The number of hybrid cord warps (3) within the width of 10mm strip can vary between 5 to 20, or 50 to 200 within the width of 1 decimeter. The spacing between the hybrid cord warps (3) in the cap ply reinforcement strip (1) can vary between 0 to 1.5mm, preferably 0.1 to 0.5mm. The cord twists of the hybrid cords (3) can vary between 100 to 800tpm (twist per meter), preferably 250 to 350tpm.
The linear densities of the ply yarns with low and high modulus in the hybrid cord warps (3) can vary between 200 to 3000 dtex, preferably 800 to 2000 dtex (the linear density in the yarns is expressed with dtex unit). Dtex is the expression of a 10.000 meter long yarn weight as gram. For example, 1400 dtex yarn means that the weight of the said 10.000 meter yarn is 1400 gram. The yarns with high modulus (4) of the hybrid cords (3) used in the inventive cap ply reinforcement strip (1) can be aramide, carbon fiber, aromatic polyester such as vectran, rayon or PEN (polyethylene naphthalate), but it is preferably aramide. The yarns with low modulus (5) in the hybrid cords can be nylon 6.6, nylon 6 or PET (polyethylene terephthalate), but it is preferably nylon 6.6.
The hybrid cords (3) are composed of yarns (4, 5) with different elastic modulus. The texturized weft yarns (2) involving high amounts of RFL form strong bonds at the contact points with the warps (3). Therefore, separation of the hybrid cords (3) is eliminated.
The linear densities of the texturized weft yarns (2) can vary between 200 to 2000 dtex, preferably 500 to 1500 dtex. The texturized yarns (2) used as weft can be twisted or non-twisted. The number of wefts in a 10cm long strip can be 5 to 30, preferably 10 to 20.
The spacing (A) between the hybrid cords (3) can be empty or partially or totally filled with RFL adhesive.
The amount of RFL dip (Dip Pick Up, DPU%) in the cap ply reinforcement strip (1) can be 5% to 50% (by weight), preferably 5% to 25%, or more preferably 10% to 15%. The reinforcement strip (1) comprises tacky adhesive on its outer surface which is needed for the tire production process. Texturized weft yarns (2) comprising high amounts of adhesive RFL make the parallel hybrid cords (3) stable by forming strong bonds at warp/weft contact points and fixing their positions. Therefore, the fraying and separation of the warps (3) in the strip (1) is prevented. By means of the adhesive RFL filling the spacing between the parallel hybrid cords (3) used as warp, rubber transfer to the said spacings from the upper belt and the lower parts of the tread is eliminated during vulcanization process.
The cap ply strip (1) can be spirally wound on the belt package in the tire with 0 to 5 degrees angle with the equatorial plane.

Claims

A cap ply reinforcement strip in pneumatic tires (1) which eliminates calendering and strip preparation steps and enables to decrease the rolling resistance of the tire by eliminating the need for rubber coating and decrease the fuel consumption; comprising
- Texturized weft yarns (2) which are used as support members enabling the base structure to be kept together and which are parallel to each other with intervals, and characterized by
- Hybrid cord warps (3) which are composed of at least one yarn with high modulus (4) and one yarn with low modulus (5), form plain woven structure by being passed vertically through the texturized weft yarns (2) parallel to each other, the spacings (A) between which are minimized and which are completely or partially filled with a tacky material (tacky RFL).
2. A cap ply reinforcement strip in pneumatic tires (1) according to claim 1 , characterized by the number of hybrid cord warps (3) within the width of 10cm can vary between 50 to 200.
3. A cap ply reinforcement strip in pneumatic tires (1) according to any one of the preceding claims, characterized by hybrid cord warps (3) the spacing (A) between which is 0 to 1.5mm, preferably 0.1 to 0.5mm.
A cap ply reinforcement strip in pneumatic tires (1) according to any one of the preceding claims, characterized by hybrid cord warps (3) wherein the linear densities of the yarns with low and high modulus (4,
5) in its structure can vary between 200 to 3000 dtex, preferably 800 to 2000 dtex.
A cap ply reinforcement strip in pneumatic tires (1) according to any one of the preceding claims, characterized by hybrid cord warps (3) the cord twisting levels of which can vary between 100 to 800 tpm (turns per meter), preferably 250 to 350 tpm.
6. A cap ply reinforcement strip in pneumatic tires (1) according to any one of the preceding claims, characterized by hybrid cord warps (3) which have yarn with high modulus (4) prepared from at least one material selected from the group comprising aramide, carbon fiber, glass fiber, aromatic polyester (such as vectran), rayon or PEN (polyethylene naphthalate), but preferably aramide.
7. A cap ply reinforcement strip in pneumatic tires (1) according to any one of the preceding claims, characterized by hybrid cord warps (3) which have yarn with low modulus (5) prepared from at least one material selected from the group comprising nylon 6.6, nylon 6 or PET (polyethylene terephthalate), but preferably nylon 6.6.
A cap ply reinforcement strip in pneumatic tires (1) according to any one of the preceding claims, characterized by texturized weft yarn (2) the linear density of which is between 200 to 2000 dtex, preferably 500 to 1500 dtex.
A cap ply reinforcement strip in pneumatic tires (1) according to any one of the preceding claims, characterized by texturized weft yarn (2) which is prepared from at least one material selected from the group comprising nylon 6.6, nylon 6 or PET (polyethylene terephthalate).
10. A cap ply reinforcement strip in pneumatic tires (1) according to any one of the preceding claims, characterized by texturized weft yarn (2) the number of weft of which in 10 cm length is 5 to 30, preferably 10 to 20.
11. A cap ply reinforcement strip in pneumatic tires (1) according to any one of the preceding claims, characterized by RPL dip amount (Dip Pick Up, DPU %) of which is 5% to 50%, preferably 10% to 25%, or more preferably 10% to 15%, by weight.
12. A cap ply reinforcement strip in pneumatic tires (1) according to any one of the preceding claims, characterized in that its width is between 5 to 30mm.
13. A cap ply reinforcement strip in pneumatic tires (1) according to any one of the preceding claims, characterized in that it is wound on the belt package in the tire spirally with an angle of 0 to 5 degrees with the equatorial plane.
14. A cap ply reinforcement strip in pneumatic tires (1) according to any one of the preceding claims, characterized by warp cords (3) which are produced from at least one material selected from the group comprising nylon 6.6 and PET (polyethylene terephthalate).
15. A cap ply reinforcement strip in pneumatic tires (1) according to any one of the preceding claims, characterized by warp cords (3) which comprise 2 to 7 monofilaments of nylon 6.6, PET or both, the diameters of the monofilaments vary between 0.1 to 1.0mm.
PCT/TR2014/000193 2013-07-30 2014-05-27 Cap ply reinforcement strip in pneumatic tire Ceased WO2015016791A1 (en)

Priority Applications (8)

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KR1020167002355A KR101862255B1 (en) 2013-07-30 2014-05-27 Cap ply reinforcement strip in pneumatic tire
RU2016106327A RU2633147C2 (en) 2013-07-30 2014-05-27 Reinforce strip of belt ply in pneumatic tire
SI201430362T SI3027425T1 (en) 2013-07-30 2014-05-27 Cap ply reinforcement strip in pneumatic tire
EP14741435.3A EP3027425B1 (en) 2013-07-30 2014-05-27 Cap ply reinforcement strip in pneumatic tire
RS20171100A RS56557B1 (en) 2013-07-30 2014-05-27 Cap ply reinforcement strip in pneumatic tire
US14/909,140 US10315464B2 (en) 2013-07-30 2014-05-27 Cap ply reinforcement strip in pneumatic tire
ES14741435.3T ES2642127T3 (en) 2013-07-30 2014-05-27 Tire reinforcement band
CN201480043147.7A CN105579249B (en) 2013-07-30 2014-05-27 Band strengthening strip in pneumatic tire

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TR201309219 2013-07-30

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EP (1) EP3027425B1 (en)
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FR3118605A1 (en) 2021-01-07 2022-07-08 Compagnie Generale Des Etablissements Michelin Tire comprising a hooping layer with a hydrophobic weft and a crown of reduced thickness
FR3118606A1 (en) 2021-01-07 2022-07-08 Compagnie Generale Des Etablissements Michelin Tire comprising a hooping layer with a hydrophobic weft and reduced decoupling thickness
FR3118603A1 (en) 2021-01-07 2022-07-08 Compagnie Generale Des Etablissements Michelin Tire fabric comprising ruffled weft reinforcing elements with low moisture pick-up rate

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KR102414686B1 (en) * 2018-06-27 2022-06-28 코오롱인더스트리 주식회사 Tire cord having high adhesion and method of preparing the same
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EP3828009A1 (en) * 2019-11-29 2021-06-02 Hankook Tire & Technology Co., Ltd Tire comprising fabric strips
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FR3118605A1 (en) 2021-01-07 2022-07-08 Compagnie Generale Des Etablissements Michelin Tire comprising a hooping layer with a hydrophobic weft and a crown of reduced thickness
FR3118606A1 (en) 2021-01-07 2022-07-08 Compagnie Generale Des Etablissements Michelin Tire comprising a hooping layer with a hydrophobic weft and reduced decoupling thickness
FR3118603A1 (en) 2021-01-07 2022-07-08 Compagnie Generale Des Etablissements Michelin Tire fabric comprising ruffled weft reinforcing elements with low moisture pick-up rate
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WO2022148921A1 (en) 2021-01-07 2022-07-14 Compagnie Generale Des Etablissements Michelin Tyre comprising a bracing ply having a hydrophobic weft and a reduced crown thickness
US12377685B2 (en) 2021-01-07 2025-08-05 Compagnie Generale Des Etablissements Michelin Tire fabric comprising tousled weft reinforcing elements with low moisture absorption content

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KR101862255B1 (en) 2018-05-29
EP3027425A1 (en) 2016-06-08
ES2642127T3 (en) 2017-11-15
US10315464B2 (en) 2019-06-11
CN105579249A (en) 2016-05-11
RU2633147C2 (en) 2017-10-11
KR20160023899A (en) 2016-03-03
EP3027425B1 (en) 2017-08-09
LU92685B1 (en) 2015-07-30
RS56557B1 (en) 2018-02-28
US20160297245A1 (en) 2016-10-13
SI3027425T1 (en) 2018-01-31
HUE033671T2 (en) 2017-12-28
RU2016106327A (en) 2017-09-04
CN105579249B (en) 2018-06-19

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