Textile-Based Reinforcement Materials for Tire Manufacturing

Bonded reinforcing textile filamentary element for tire cords that balances deformability and modulus. The element is manufactured by coating the natural textile filamentary element with an external layer and thermally treating it. The treatment increases the modulus at small elongations without excessively increasing it at large elongations. This allows optimizing the modulus-deformability compromise compared to the uncoated filamentary element. The coating process involves selectively increasing the modulus of the coated element for small elongations while preserving deformability at larger elongations. This is achieved by using a core insertion structure where the filaments are wound around the core instead of around each other.

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Reinforced outer ring for non-pneumatic tires that prevents delamination and improves durability. The outer ring has a thermoplastic hoop with embedded reinforcement cords. An elastomeric layer, a reinforcement layer, and another elastomeric layer are stacked around the hoop. This sandwich construction provides a reinforced shear structure that prevents delamination and improves durability compared to a single layer tread on the outer ring. The thermoplastic hoop prevents deformation of the outer ring when the tire is deflated. The sandwich layers allow shear deformation during cornering.

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Three-dimensional knitted fabric shear bands for tires that provide shear deformation when the tire contacts the ground. The shear bands are made from helically wound strips that are stitch-knitted together to form annular rings. This allows the shear bands to be easily cut into the required shape without seams. The knitted construction provides a spacer layer between two skins that maintain their length during shear deformation. This allows the outer skin to deform while the inner skin stays fixed, providing shear resistance and tire contact without stretching the shear band. The knitted fabric also allows customization of the material properties for different tire applications.

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Non-pneumatic tire design with load bearing ring that allows the tire to carry a load without internal air pressure. The tire has an outer annular portion, inner annular portion, and a load bearing ring between them. The load bearing ring has reinforcing layers made of woven material with warp and weft wires. The weft wire deforms the warp wire radially, providing tension support and shear modulus in both radial and lateral directions. This allows the tire to support loads without air pressure while maintaining stability and traction. The woven reinforcing layers can be tuned to create a flat contact patch for improved performance.

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Tire for vehicle wheels with enhanced environmental sustainability. The tire uses textile reinforcing cords containing filaments made of recycled plastic material mixed with filaments made of non-recycled plastic material. The recycled plastic filaments are twisted with non-recycled plastic filaments from different yarns. This allows balancing environmental sustainability and mechanical properties compared to cords with all non-recycled filaments. The recycled content and density of recycled vs non-recycled filaments can be adjusted.

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Composite wire for tire reinforcement that reduces weight compared to steel cords while maintaining required stiffness. The composite wire has a thermoplastic monofilament core surrounded by two or more groups of reinforcement threads wound or braided with angles that add up to zero. The core can contain reinforcement fibers. This configuration provides compression resistance and flexural stiffness similar to steel cords for tire reinforcement applications. The composite wire can be used in tire components like belts, carcasses, and beads instead of steel cords to lower weight.

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A fabric for tire reinforcement that reduces corrosion and extends tire life. The fabric has warp and weft reinforcing elements. The weft reinforcing elements have low moisture regain (<=2.0%) to prevent water spread and corrosion. They are also hairy to allow weaving. The low moisture weft elements reduce water retention in the fabric and prevent corrosion of the metal tire reinforcements.

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Reinforced fabric for pneumatic tire belts that balances hooping and stiffening functions of the tire belts to improve performance and durability. The fabric has parallel metal reinforcing elements embedded in an elastomer matrix. The elements are arranged at a pitch p that meets a specific condition related to the element dimensions and breaking force. This condition prevents interference between adjacent elements and maintains collaboration when used as a working ply in tires. The fabric thickness is also controlled to balance force take-up and avoid imperfect rubber bridges. The pitch condition is p >= 0.8 * RF / Rn * (a + pi/4) * T^2, where RF is the element breaking force, Rn is the fabric breaking force, a is width/height, and T is element height.

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Rubberized strength members for elastomeric products like tires that have high strength and extensibility while conserving resources and reducing environmental impact. The strength member uses a yarn made from recycled PET with specific properties to achieve these goals. The recycled PET yarn is produced through a process that involves pre-crystallization, solid-state polymerization, drying, spinning, oiling, drawing, and heat-setting. This process allows producing recycled PET yarns with desired properties for tire reinforcement. The rubberized strength member can be used in vehicle tires, where it has improved physical properties compared to virgin PET yarns.

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A pneumatic tire design to prevent failure near the bead area by reducing shear strain concentration in the tire sidewall. The tire has a reinforcement layer between the tire outer surface and the turn-up portion of the carcass ply near the bead cores. This layer, made of a non-woven fabric with metal fibers or a rubber sheet with embedded metal fibers, covers the outer side of at least a portion of the turn-up. This reinforcement layer prevents shear strain concentration in the sidewall rubber near the turn-up when the tire is compressed by the rim flange.

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Tyre for high performance (HP) and ultra-high performance (UHP) sports automobiles, electric and non-electric. The tyre comprises a core made of textile material and, around the core, a winding of one or more textile filaments made of a material different from that of the core.

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Tensile reinforcement (TRI) nylon 6.6 yarn for using as tire cord reinforcement in pneumatic tires. The TRI is low initial modulus and higher final modulus and is optimized and balanced for use as tire cord reinforcement in pneumatic tires.

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Tire capable of relieving stress concentration at the position of the end of the reinforcement layer, in addition to relieving stress concentration at the location of the cut edge of the ply. The tire includes a ply including a plurality of cords arranged in parallel to each other, a cover rubber covering the ply and configuring a tire outer surface, and a reinforcement layer that, at a position of a cut edge of the ply, covers the cut edge of the ply on one side or both sides in a ply thickness direction, wherein the reinforcement layer is configured by a non-woven fabric comprising metal fibers or a rubber sheet material having metal fibers embedded therein.

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Tire structure that improves cut and/or puncture resistance of the tire. The structure includes a tread, a crown reinforcement, a carcass reinforcement with at least one ply wound about a pair of bead cores and through two sidewalls of the tire, and a cut/puncture resistant sidewall layer disposed adjacent a part of the carcass reinforcement within one of the sidewalls, the cut/puncture sidewall layer being formed of a plurality of cords, each cord including one nylon cord having S 4-8 tpi (twists per inch), one aramid cord having Z 4-8 tpi, and the nylon cord and the aramid cord being twisted together with S 3-7 tpi.

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Vehicle tires and non-pneumatic tires that improves the load carrying efficiency of a tire. The tire includes a shear band with several layers of polyester or other synthetic material that extend in a first and second direction, wherein the first and second layers are connected together by reinforcement members (such as yarns, filaments or fibers) or other knitted layers that extend in a defined third direction.

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Vehicle tires that have an improved shear band for a non-pneumatic tire. The tire includes a three-dimensional spacer structure made from two outer layers of fabric, each outer layer having reinforcement members (such as yarns, filaments or fibers) which extend in a first and second direction, wherein the two outer layers are connected together by reinforcement members (yarns, filaments or fibers) or other knitted layers that extend in a defined third direction.

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Fiber-reinforced rubber layer that can be situated beneath the tread or base layer, if present, and can help prevent penetration of foreign objects from extending beyond the tread or base layer and further into an underlying layer(s), and preparation thereof. The layer is formed of a rubber compound that is reinforced with one or more types of fiber selected from nylon, aramid, carbon, cotton, and polyester, the aramid fiber including pulp and/or aramid fiber, a crosslinking agent and/or a vulcanizing agent, wherein the crosslinking agent is dithiodicarboxylic acid, the vulcanizing agent is N,N′-m-phenylene dimaleimide, and the accelerator is zinc dibenzyl dithiocarbamate.

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Composite comprising a reinforcing element and a rubber composition, finished or semi-finished articles and tires comprising these composites. The composite comprises a reinforcing element and a rubber composition, finished or semi-finished articles and tires comprising these composites.

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Multi-strand cord that can be used notably for reinforcing tyres, particularly tyres for heavy industrial vehicles, and to tyres using such cords. The cord has a structural elongation As (in which each internal strand in the internal layer within each internal strand and the helix angle of each external thread in the external layer within each internal strand), resulting from the plasticity (irreversible deformation beyond the elastic limit) of one or more threads of the cord.

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Multistrand cords that can be used notably for reinforcing tyres, particularly tyres for heavy industrial vehicles. The cord includes an internal layer of the cord made up of an internal strand and an external layer of the cord made up of six external strands wrapped in a helix around the internal layer of the cord.

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