Hybrid reinforcing material and non-pneumatic tire including same

Abstract

The present invention relates to a hybrid reinforcing material and, more specifically, to a non-pneumatic tire reinforcing material including: a circular wire-shaped core disposed at the center part thereof; a resin layer surrounding the outside of the core with a predetermined thickness; and a plurality of reinforcing fibers arranged inside the resin layer along the longitudinal direction of the core. Therefore, the reinforcing material is inserted into a shear band part of a tread band of a non-pneumatic tire to distribute the stress concentrated in a spoke part and to support the overall load of the tire.

Description

Hybrid reinforcement and non-pneumatic tire containing the same

[0001] The present invention relates to a hybrid reinforcing material and a non-pneumatic tire including the same, and more particularly, to a reinforcing material inserted into a shear band portion of a tire tread band to disperse stress concentrated on a spoke portion and support the load of the entire tire, and to a non-pneumatic tire using the same, which improves effective load support, durability, and weight reduction.

[0002]

[0003] As the automotive industry evolves, tires are also continuously being developed with improved safety and environmental friendliness. A prime example is the non-pneumatic tire. Unlike conventional tires, which rely on air pressure to support the vehicle's weight, non-pneumatic tires support the vehicle's weight solely through the shape of the tire itself.

[0004] Because airless tires do not use compressed air at all, they are safe from accidents caused by pressure loss or flat tires. Furthermore, their unified materials facilitate recycling, making them environmentally friendly. Furthermore, the manufacturing process for airless tires is simpler than for pneumatic tires, and they offer the advantage of preventing the standing wave phenomenon that can occur in pneumatic tires and improving rolling resistance.

[0005] However, in the case of non-pneumatic tires, the spokes play a significant role in tire support and absorb most of the tire stress generated during vehicle operation, placing a significant burden on the spokes. This can reduce spoke durability and negatively impact vehicle safety.

[0006] Therefore, it is necessary to disperse the stress concentrated on the spokes of a non-pneumatic tire while the vehicle is being driven, and it is also necessary to disperse the supporting force of the non-pneumatic tire through other means.

[0007] Research is being conducted on reinforcing materials for non-pneumatic tires to improve durability. A technology for this is US Patent No. 11491820 B2, IMPROVED GRC (GLASS-RESIN COMPOSITE) MONOFILAMENT (Michelin), which is a glass-resin composite with improved compressibility at high temperatures in the manufacture of reinforcing materials for non-pneumatic tires. This invention is a glass-resin composite in which the resin has a glass transition temperature (Tg) of 190 degrees or higher, a monofilament breakage of 4.0% or higher, a tensile modulus (E23°C) of 35 GPa or higher, and a complex modulus (E190°C) of 35 GPa or higher.

[0008] Another technology is Korean Patent No. 10-2360510, Improved Glass-Resin Multicomposite Reinforcement (Michelin). The invention relates to a multicomposite reinforcement (R1, R2) comprising one or more monofilament(s) (10) made of a glass-resin composite comprising glass filaments (101) embedded in a thermosetting resin (102) having a glass transition temperature Tg1, characterized in that a layer of thermoplastic material (12) covers the monofilaments, or, in the case of multiple monofilaments, covers each monofilament individually, or covers all or at least a portion of the monofilaments collectively. According to the present invention, a monofilament or, in the case of a plurality of monofilaments, all of the monofilaments or at least a portion of the monofilaments have the following properties: a temperature Tg1 of 190°C or higher, an elongation at break A(M) of 4.0% or higher, and an initial tensile modulus E(M) of more than 35 GPa. The invention also relates to a multilayer laminate comprising such a multicomposite reinforcement and to a pneumatic or non-pneumatic tire reinforced with the multilayer laminate or the multicomposite reinforcement.

[0009] Another technology is US patent US 2023-0065909 A1, NON-PNEUMATIC TIRE WITH IMPROVED SHEAR BAND (Goodyear). A non-pneumatic tire of the present invention comprises a shear band having a first membrane layer positioned radially inwardly of said outer annular tread, a second membrane layer positioned radially outwardly of said first membrane layer, wherein said first and second membrane layers are formed of a plurality of parallel reinforcing cores arranged at an angle of 10 degrees or less with respect to said tire equatorial plane, said outer annular tread further comprising a first angled belt positioned radially outwardly of said second membrane layer, and a second angled belt positioned radially outwardly of said first angled belt, wherein said first and second angled belts have parallel reinforcing cores having a belt angle of 15-30 degrees with respect to said tire equatorial plane, wherein the angle of the second angled belt is in the same opposite direction to the belt angle of the first angled belt.

[0010] In the construction of the above-mentioned non-pneumatic tire, high-strength materials must be applied to the outer shear band of the tire to ensure effective load support. The textile cord used in pneumatic tires lacks bending stiffness. While steel cord or bead wire possesses high bending stiffness, their high specific gravity increases the tire's weight.

[0011] <Prior patent literature>

[0012] US registered patent US 11491820 B2

[0013] Republic of Korea Patent No. KR 10-2360510 B1

[0014] U.S. Patent Publication No. US 2023-0065909 A1

[0015]

[0016] The purpose of the present invention to solve the above problems is to enable a tire to be lighter than when steel cords or bead wires are applied, and to obtain improved durability when non-pneumatic tires are applied.

[0017] In addition, an object of the present invention is to provide a hybrid reinforcing material for a non-pneumatic tire that improves the effective load support and durability of the tire and reduces weight by dispersing stress concentrated in the spoke portion.

[0018] In addition, a non-pneumatic tire is provided that includes a reinforcing material that disperses the tire's supporting force concentrated in the spoke portion.

[0019] The technical problems to be solved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0020]

[0021] The composition of the hybrid reinforcing material of the present invention for achieving the above purpose is characterized by including a core in the shape of a circular wire placed in the center; a resin layer wrapping the outer side of the core to a predetermined thickness; and a plurality of reinforcing fibers placed inside the resin layer along the longitudinal direction of the core.

[0022] In one embodiment of the present invention, the core is formed of at least one core and may have a diameter of 0.05 mm to 0.3 mm.

[0023] In one embodiment of the present invention, the core may be made of steel or stainless steel.

[0024] In one embodiment of the present invention, at least two cores can be arranged in a balanced manner around the axis.

[0025] In one embodiment of the present invention, the resin layer may be comprised of 15 wt% to 35 wt% of the total weight of the hybrid reinforcing material.

[0026] In one embodiment of the present invention, the resin layer may include at least one of an epoxy-based resin, a polyester-based resin, a vinyl ester-based resin, and an epoxy-vinyl ester-based resin.

[0027] In one embodiment of the present invention, each of the plurality of reinforcing fibers may be formed of E-glass filaments.

[0028] In one embodiment of the present invention, the E-glass may contain 1% or less of alkali.

[0029] In one embodiment of the present invention, the hybrid reinforcement may have a diameter of 0.8 to 1.3 mm.

[0030] In one embodiment of the present invention, the hybrid reinforcing material can be manufactured by a pultrusion manufacturing method.

[0031] In one embodiment of the present invention, the hybrid reinforcing material may have a bending degree of 400 to 700 N / m, a strength of 900 MPa or more, and a breaking elongation of 2.5% or more.

[0032] An airless tire according to one embodiment of the present invention may include a spoke portion formed in a mesh structure and arranged on a side surface of the tire; an adhesive layer positioned on an outer surface of the spoke portion; and a tread band including a shear band portion and a tread portion including a hybrid reinforcing material.

[0033] In one embodiment of the present invention, the hybrid reinforcing material may be arranged in a matrix form at regular intervals in the vertical and horizontal directions inside the reinforcing rubber of the non-pneumatic tire shear band portion.

[0034]

[0035] The effect of the present invention according to the above configuration is that the resin layer is arranged to surround the core and a plurality of reinforcing fibers are uniformly distributed in the resin layer, so that the tire can be made lighter compared to the application of steel cord or bead wire, and when a non-pneumatic tire is applied, improved durability can be obtained, and the effective load support and durability of the tire can be improved and the weight can be reduced.

[0036] In addition, it is placed in the central area of ​​the cross-sectional area and has the advantage of increasing strength in the form of a stainless steel wire, dispersing stress, and supporting the load of the entire tire.

[0037] In addition, there are advantages in that strength and elongation can be improved, manufacturing efficiency can be improved, strength and load-bearing capacity can be improved, and the effective load-bearing capacity and durability of the tire can be improved.

[0038] Additionally, it is possible to disperse the tire's support force, which is concentrated in the non-pneumatic tire spoke section.

[0039] In addition, it is possible to disperse stress concentrated in the spoke portion of a non-pneumatic tire and improve the durability of the non-pneumatic tire.

[0040] The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims.

[0041]

[0042] Figure 1 is a structural diagram of a non-pneumatic tire according to one embodiment of the present invention.

[0043] Figure 2 is a partially enlarged view of a shear band portion of a non-pneumatic tire according to one embodiment of the present invention.

[0044] Figure 3 is a cross-sectional view illustrating a hybrid reinforcement material according to an embodiment of the present invention.

[0045] Figure 4 is a cross-sectional view illustrating a hybrid reinforcement according to another embodiment of the present invention.

[0046] Figure 5 is a table showing the results of performance tests according to the constituent materials of the reinforcement of a non-pneumatic tire.

[0047] Figure 6 is a table showing the mechanical properties of materials being considered as hybrid reinforcements for non-pneumatic tires.

[0048] Figure 7 is a graph showing the strength according to the diameter of the same material.

[0049] FIG. 8 is a table showing the results of a performance test of a tire in which a hybrid reinforcement material is placed according to an embodiment of the present invention.

[0050]

[0051] The present invention relates to a hybrid reinforcing material, and more particularly, to a non-pneumatic tire reinforcing material comprising: a core in the form of a circular wire arranged at the center; a resin layer wrapping the outer side of the core to a predetermined thickness; and a plurality of reinforcing fibers arranged inside the resin layer along the longitudinal direction of the core, wherein the non-pneumatic tire reinforcing material is inserted into a shear band portion of a non-pneumatic tire tread band to disperse stress concentrated on a spoke portion and support the load of the entire tire.

[0052]

[0053] Hereinafter, the present invention will be described with reference to the attached drawings. However, the present invention may be implemented in various different forms and is therefore not limited to the embodiments described herein. In the drawings, irrelevant parts have been omitted for clarity of description, and similar parts have been designated with similar reference numerals throughout the specification.

[0054] Throughout the specification, when a part is said to be "connected (connected, contacted, or coupled)" to another part, this includes not only cases where it is "directly connected," but also cases where it is "indirectly connected" with another part in between. Furthermore, when a part is said to "include" a component, this does not exclude other components, but rather implies that it may include other components, unless otherwise specifically stated.

[0055] The terminology used herein is merely used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this specification, it should be understood that the terms "comprises" or "has" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0056] Additionally, terms such as “... part,” “... unit,” and “... module” described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware, software, or a combination of hardware and software.

[0057] Additionally, when a step is said to be located "before" or "after" another step in this specification, this includes not only cases where the step is in a direct time-series relationship with the other step, but also cases where the two steps are in an indirect time-series relationship where the time-series order may be changed, such as a mixing step after each step.

[0058]

[0059] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0060] Figure 1 is a structural diagram of a non-pneumatic tire according to one embodiment of the present invention.

[0061] Referring to Fig. 1, a non-pneumatic tire (1) is composed of a spoke portion (2), an adhesive layer (6), and a tread band (5) including a shear band portion (4) and a tread portion (3).

[0062] The spoke portion (2) is formed with a mesh structure and is placed on the side of the tire to support the load of the tire. In addition, the spoke portion (2) accommodates the tire stress that occurs during vehicle operation. The tread portion (3) is a thick rubber layer that directly contacts the road surface and moves the vehicle with the frictional force that occurs between the tread portion (3) and the road surface. The shear band portion (4) distributes and performs the role of the spoke portion (2) that supports the load of the tire and accommodates the tire stress that occurs during vehicle operation. The adhesive layer (6) is composed of a plurality of adhesives (a first adhesive and a second adhesive) and joins the spoke portion (2) and the shear band portion (4).

[0063]

[0064] Figure 2 is a partially enlarged view of a shear band portion of a non-pneumatic tire according to one embodiment of the present invention.

[0065] Referring to Fig. 2, the shear band portion (4) is composed of a hybrid reinforcing material (7) and reinforcing rubber (8). The shear band portion (4) includes reinforcing rubber (8), and inside the reinforcing rubber (8), a plurality of hybrid reinforcing materials (7) are arranged in a matrix form at regular intervals in the vertical and horizontal directions.

[0066]

[0067] Figure 3 is a cross-sectional view illustrating a hybrid reinforcement material according to an embodiment of the present invention.

[0068] The hybrid reinforcement (7) is composed of a composite of a core (40), a resin layer (30), and reinforcing fibers (20). The resin layer (30) surrounds the core (40), and an inner boundary surface (50) is formed between the resin layer (30) and the core (40).

[0069] The metal wire, which is the core (40), is a steel mono wire with a circular cross-section and a diameter of 0.095 mm and is located at the center of the cross-section of the reinforcing member, and the outside is composed of a composite of a polymer resin, which is a resin layer (30), and reinforcing fibers (20).

[0070] Additionally, the resin layer (30) includes a number of reinforcing fibers (20) and forms an outer boundary surface (10) with the reinforcing rubber (8).

[0071] The core (40) may be a circular metal wire (e.g., stainless wire), and the diameter of the core (40) may be 0.05 mm to 0.3 mm, and may be 0.065 mm.

[0072] Additionally, the core (40) may be made of steel material, and more preferably, it is made of steel material having a carbon content of 0.5 to 1.0 wt%.

[0073] The resin layer (30) surrounds the outer side of the core (40) and is adhesively bonded to a predetermined thickness. The resin layer (30) may be composed of one or more of polyester-based, epoxy-based, epoxy-vinyl ester-based, and vinyl ester-based materials, and may be included in an amount of 15 wt% to 35 wt% of the total weight of the hybrid reinforcing material (7).

[0074] The reinforcing fiber (20) includes a plurality of glass fibers arranged in the longitudinal direction of the core (40) and uniformly distributed within the cross-section of the resin layer (30), and each of the plurality of glass fibers of the hybrid reinforcing material may be composed of this glass filament (E-glass Filament). To achieve integration between the metal wire and the glass fiber resin, an adhesive treatment may be applied to the surface of the metal wire.

[0075] In particular, the above glass (E-glass) may contain less than 1% of alkali.

[0076] The hybrid reinforcement (7) may be circular in shape and have a diameter of 1.0 mm to 1.3 mm, or may be 0.8 mm to 1.2 mm, and may be manufactured by a pulltrusion method.

[0077] The hybrid reinforcing material (7) of the present invention may have a bending degree of 400 to 700 N / m, a strength of 900 Mpa or more, and a breaking elongation of 2.5% or more.

[0078]

[0079] Meanwhile, Fig. 4 is a cross-sectional example of a hybrid reinforcement according to another embodiment of the present invention, in which at least two cores (40) can be arranged in a balanced manner around the axis center.

[0080] That is, a 1X2 (0.095 mm) steel cord is positioned at the center of the reinforcing material cross-section, and the exterior is composed of a composite of polymer resin and reinforcing fiber.

[0081] The core (40) includes a first core (41) and a second core (42).

[0082] The first core (41) is one reinforcing core that is evenly arranged around the center of the shaft, and the second core (42) is another reinforcing core that is evenly arranged around the center of the shaft.

[0083] The hybrid reinforcement (7) is composed of a sheet-shaped matrix arranged at regular intervals through rubber topping, and is wound circumferentially around the shear band portion of the non-pneumatic tire. By applying the hybrid reinforcement (7), the stress concentrated in the spoke portion is dispersed, and the load of the entire tire is supported.

[0084] The present invention relates to the application of a reinforcing material to airless tires. By applying a reinforcing material comprising a core of metal wire surrounded by a glass fiber-resin composite, the tire can be made lighter than when using steel cord or bead wire. Furthermore, compared to airless tires using a single glass fiber-resin composite, the reinforcing material of the present invention provides improved durability when applied to airless tires.

[0085] In addition, by applying a hybrid type of glass-fiber reinforced plastic (GFS) by pulltrusion process, which includes steel wire or steel cord in the core, to a non-pneumatic tire, the effective load support and durability of the tire are improved and the weight is reduced.

[0086]

[0087] Fig. 5 is a table showing the performance test results according to the constituent materials of the hybrid reinforcement for non-pneumatic tires, and Fig. 6 is a table showing the mechanical properties of materials being considered as hybrid reinforcement for non-pneumatic tires.

[0088] Referring to Fig. 5, T-1 has a 2 (0.25 mm) / 5 (0.35 mm) Steel Cord with a size of ф1.13 mm applied as a core (40), and no resin layer (30) is applied.

[0089] T-2 has a bead wire of size ф0.95mm applied as a core (40), and no resin layer (30) is applied.

[0090] T-4 has a GFRP (Glass Fiber Reinforced Polymer, hereinafter referred to as GFRP) with a size of ф1.00 mm as the core, and polyester included at 20 wt% of the total weight is applied as the resin layer (30).

[0091] T-5 is applied with GFRP of ф1.00mm size as the core (40), and polyester included at 20wt% of the total weight is applied as the resin layer (30).

[0092] T-6 uses a hybrid GFRP (with Stainless Wire) with a size of ф1.02 mm as the core (40) and uses Polyester included at 20 wt% of the total weight as the resin layer (30).

[0093] T-7 was applied with GFRP of ф1.00 mm size as the core (40), and vinylester included at 20 wt% of the total weight was applied as the resin layer (30).

[0094] T-8 is applied with hybrid GFRP (with Stainless Wire) of ф1.02mm size as core (40), and vinylester included at 20wt% of total weight is applied as resin layer (30).

[0095] For various materials of similar size to T-1, T-2 has a very high Taber Stiffness (Note that the Taber Stiffness value is a relative comparison value of the bending stiffness obtained using the Taber Stiffness Tester 150-D model, and is a value obtained by evaluating under the conditions of Range unit: 2,000 Unit, Angle Range: 15°, and Sample size: 5 cm. In addition, the Taber Stiffness value shows a relatively high tendency in the size of the specimen thickness within 1.2 mm, and can be conveniently used as a comparison value of the bending stiffness). It was shown that when placed on the shear band part (4) of the non-pneumatic tire (1), it can support a high load, but if the Taber Stiffness value is too high, the bottom surface of the end of the hybrid reinforcement (7) may be separated due to tip rising during the molding process of the non-pneumatic tire (1), which may cause air trap defects after curing.

[0096] In comparison, T-4, 5, and 7 manufactured by the pultrusion molding method showed a higher Taber Stiffness value than T-1 and a lower Taber Stiffness value than T-2, demonstrating that appropriate molding workability can be secured.

[0097] T-6, 8 (a hybrid type of GFRP manufactured by placing a stainless wire of ф0.065 mm size in the core (40) of GFRP) showed that the tensile strength and elongation at break could be slightly improved compared to single-composition GFRP (T-5, 7).

[0098] In addition, it was found that T-6 and 8 showed lower linear density values ​​compared to T-1 or T-2, and thus, when applied to the shear band section (4) of a non-pneumatic tire (1), the weight of the tire could be reduced.

[0099]

[0100] Meanwhile, referring to FIG. 6, for various materials of similar size (diameter) to 2(0.35) / 5(0.25) steel cord, a bead wire of ф 0.95 mm has a very high Taber Stiffness value (ST), which is a strength value, and can show high load support when positioned on an airless tire shear band. However, if the Taber Stiffness value is very high, the lower surface of the end of the reinforcement may be separated due to tip rising during the forming process of the airless tire shear band, which may cause a defect in the air trap after curing.

[0101] In this regard, ф 1.0mm GFRP (Glass Fiber Reinforced Polymer) manufactured by the pultrusion molding method provides a Taber Stiffness value that is higher than that of 2(0.35) / 5(0.25) steel cord, and a Taber Stiffness value that is lower than that of ф 0.95mm bead wire, ensuring appropriate molding workability (T-3,4).

[0102] At this time, a hybrid type GFRP manufactured by placing a steel wire or steel cord of ф 0.095 mm in the center (Core) of GFRP can slightly improve strength and elongation compared to GFRP applied with the same resin (T-5,6,7,8).

[0103] Additionally, hybrid GFRP can reduce tire weight when applied to airless tire shear bands due to its lower linear density compared to steel cord or bead wire.

[0104]

[0105] Figure 7 is a graph showing the strength according to the diameter of the same material.

[0106] This value was obtained by evaluating under the conditions of Range unit: 2,000 Unit, Angle Range: 15°, and Sample size: 5 cm. It shows a relatively high tendency in sizes within 1.2 mm of specimen thickness, and can be easily used as a comparative value for bending stiffness.

[0107]

[0108] FIG. 8 is a table showing the results of a performance test of a tire in which a hybrid reinforcement material is placed according to an embodiment of the present invention.

[0109] Referring to Fig. 8, in Control Group 1, 2 (0.25 mm) / 5 (0.35 mm) Steel Cord with a size of ф1.13 mm was applied as the core (40) of the hybrid reinforcement (7), in Example 1, Bead Wire with a size of ф0.95 mm was applied as the core (40) of the hybrid reinforcement (7), in Example 2, GFRP with a size of ф1.0 mm was applied as the core (40) of the hybrid reinforcement (7), in Example 3, GFRP with a size of ф1.0 mm was applied as the core (40) of the hybrid reinforcement (7), and in Example 4, hybrid GFRP with a size of ф1.02 mm (including Stainless Wire with a size of ф0.065 mm) was applied as the core (40) of the hybrid reinforcement (7).

[0110] Compared to Control Group 1, Example 1 showed better results in terms of durability such as strength and elongation, but showed worse results in terms of weight.

[0111] In addition, Example 1 failed in the durability test due to deformation of the shear band section (4) of the cleat test. This indicates that although the elongation at break of Example 1 is 8.1%, the yield section (yield point) where the physical properties change is very short at 1.2%, and thus, strong deformation in a local section causes plastic deformation of Example 1, which reduces the durability of the non-pneumatic tire (1).

[0112] In addition, Examples 2 and 3 (single GFRP application) showed that although the weight could be reduced compared to Control Example 1 and Example 1, the tensile strength and elongation at break were low, which was disadvantageous in terms of durability in harsh environments.

[0113] However, Example 4 (application of hybrid GFRP) showed that the weight of the non-pneumatic tire (1) can be reduced, and durability can also be improved by increasing tensile strength and elongation at break.

[0114] That is, compared to 2(0.35) / 5(0.25) Steel Cord, ф 0.95mm Mono Wire is advantageous in durability but very disadvantageous in weight. In addition, it failed in durability due to deformation of the shear band during the cleat test. This is because although the breaking elongation of the mono wire is 8%, the yield point section where the physical properties change is very short at 1.2%, so strong deformation in the local section causes plastic deformation of the mono wire, which reduces the durability of the airless tire.

[0115] While single GFRP materials can reduce the weight of airless tires compared to steel cord or wire, their low strength and elongation make them disadvantageous for durability in harsh environments. Applying hybrid GFRP materials, however, can reduce the weight of airless tires and improve durability.

[0116]

[0117] Due to this hybrid reinforcement material (7), the resin layer (30) is arranged to surround the core (40) and a plurality of reinforcing fibers (20) are uniformly distributed in the resin layer (30), so that the tire can be made lighter compared to the application of steel cord or bead wire, and when a non-pneumatic tire is applied, improved durability can be obtained, and the effective load support and durability of the tire can be improved and the weight can be reduced.

[0118] In addition, according to the present invention, the strength can be increased, stress can be distributed, and the load of the entire tire can be supported according to the core (40) which is arranged in the central area of ​​the cross-sectional area and is made of a stainless steel wire shape.

[0119] In addition, according to the present invention, strength and elongation can be improved, manufacturing efficiency can be improved, strength and load-bearing capacity can be improved, and the effective load-bearing capacity and durability of the tire can be improved.

[0120]

[0121] Although the description of the present invention has been illustrated with limited drawings, it is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical spirit or essential characteristics of the present invention. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single component may be implemented in a distributed manner, and likewise, components described as distributed may be implemented in a combined form. Furthermore, the described techniques may be performed in a different order than the described method.

[0122] The embodiments described in this specification and the accompanying drawings merely illustrate some of the technical concepts encompassed by the present invention. Therefore, the scope of the present invention is defined by the claims below, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

[0123]

[0124] <Explanation of symbols>

[0125] 1: Non-pneumatic tires

[0126] 2: Spoke section

[0127] 3: Tread

[0128] 4: Shear band section

[0129] 5: Treadband

[0130] 6: Adhesive layer

[0131] 7: Hybrid reinforcement

[0132] 8: Reinforced rubber

[0133] 10: Outer boundary surface

[0134] 20: Reinforcing fiber

[0135] 30: Resin layer

[0136] 40: Core

[0137] 41: First core

[0138] 42: Second core

[0139] 50: Inner boundary surface

Claims

1. A core in the shape of a circular wire placed in the center; A resin layer that wraps the outer surface of the core to a predetermined thickness; and A hybrid reinforcing material characterized by comprising a plurality of reinforcing fibers arranged inside the resin layer along the longitudinal direction of the core.

2. In paragraph 1, A hybrid reinforcement material characterized in that the core is composed of at least one core and has a diameter of 0.05 mm to 0.3 mm.

3. In paragraph 1, A hybrid reinforcement material characterized in that the core is made of steel or stainless steel.

4. In paragraph 1, A hybrid reinforcement material characterized in that at least two cores are evenly arranged around the center of the shaft.

5. In paragraph 1, A hybrid reinforcing material, characterized in that the resin layer is composed of 15 wt% to 35 wt% of the total weight of the hybrid reinforcing material.

6. In paragraph 1, A hybrid reinforcing material characterized in that the resin layer comprises at least one of epoxy-based, polyester-based, vinyl ester-based, and epoxy-vinyl ester-based resins.

7. In paragraph 1, A hybrid reinforcing material characterized in that each of the above plurality of reinforcing fibers is made of glass filaments (E-glass Filaments).

8. In paragraph 7, A hybrid reinforcing material characterized in that the above glass contains less than 1% of alkali.

9. In paragraph 1, A hybrid reinforcement material characterized in that the above hybrid reinforcement material has a diameter of 0.8 to 1.3 mm.

10. In paragraph 1, A hybrid reinforcing material characterized in that the above hybrid reinforcing material is manufactured by a pultrusion manufacturing method.

11. In paragraph 1, The hybrid reinforcement is characterized in that the above hybrid reinforcement has a bending degree of 400 to 700 N / m, a strength of 900 Mpa or more, and a breaking elongation of 2.5% or more.

12. Spoke portion formed in a mesh structure and placed on the side of the tire; An adhesive layer located on the outer surface of the spoke portion; and A non-pneumatic tire comprising a tread band including a shear band portion and a tread portion including a hybrid reinforcement according to claim 1.

13. In paragraph 12, A non-pneumatic tire characterized in that the hybrid reinforcing material is arranged in a matrix form at regular intervals in the vertical and horizontal directions inside the reinforcing rubber of the shear band section.

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