WO2019245337A1

WO2019245337A1 - Rubber-reinforced material, method of producing same, and tire comprising same

Info

Publication number: WO2019245337A1
Application number: PCT/KR2019/007540
Authority: WO
Inventors: 전옥화; 김다애; 이민호; 최송연; 임종하
Original assignee: 코오롱인더스트리 주식회사
Priority date: 2018-06-21
Filing date: 2019-06-21
Publication date: 2019-12-26

Abstract

One embodiment of the present invention provides a rubber-reinforced material which comprises a fibrous substrate, an adhesive layer disposed on the fibrous substrate, and a rubber compound layer disposed on the adhesive layer, and contains resorcinol-formaldehyde-latex (RFL), wherein the rubber compound layer is formed of a rubber compound liquid, wherein the rubber compound liquid comprises 10 to 40 wt% of an elastic polymer composition and 60-90 wt% of a solvent with respect to the total weight of the rubber compound liquid, and the rubber compound layer has a thickness of 5 μm to 200 μm. Another embodiment of the present invention provides a rubber-reinforced material comprising a fibrous substrate and a rubber coating layer on the fibrous substrate, wherein the rubber coating layer is formed of a rubber coating liquid, wherein the rubber coating liquid comprises 5-30 wt% of rubber compound solids and 70-95 wt% of a solvent with respect to the total weight of the rubber coating liquid.

Description

2019/245337 1 »（： 1 ^ 1 {2019/007540

[Explanation of invention]

[Name of invention] Rubber reinforcement, a manufacturing method and a tire comprising the same

Technical Field

Cross Citation with Related Application (s)

This application claims the benefit of priority based on Korean Patent Application No. 10-2018-0071516 dated June 21, 2018 and Korean Patent Application No. 10-2018-0115877 dated September 28, 2018. All content disclosed in the literature is included as part of this specification.

The present invention relates to a lightweight rubber reinforcement that can reduce the weight of a tire, a method of manufacturing the same, and a tire including such a rubber reinforcement.

[Technique to become background of invention]

Recently, as the performance of the vehicle is improved and the road conditions are improved, the driving speed of the vehicle is gradually increasing, so that it is necessary to maintain the stability and durability of the tire even at high speeds. To this end, research on tire cords used as rubber reinforcements for tires has been actively conducted. In addition, in recent years, in consideration of energy problems, fuel efficiency and environmental problems, there is a demand for a tire that is light and excellent in durability.

Tire cords are classified according to the parts and roles used, and can be broadly classified into a carcass that supports the tire as a whole, a belt that prevents load support and deformation due to high speed driving, and a cap fly that prevents deformation of the belt (FIG. 1). In particular, as the running speed of automobiles has recently increased, problems such as deterioration of riding comfort due to deformation of the belt portion of the tire have occurred, and the importance of the cap fly for preventing the deformation of the belt has increased.

Materials for belts, carcasses, and cap plies include, for example, nylon, rayon, aramid, and polyesters including. 2019/245337 1 »（： 1 ^ 1 {2019/007540

Among these, nylon is used in tires of various sizes because of its low price, excellent adhesive performance, and excellent post-fatigue adhesion performance. One of the main functions of the cap fly is to support the belt at high speed. Nylon has a high shrinkage stress, and it is excellent in supporting the belt at high speed. However, nylon has a low modulus value and at the same time has a weak point as a cap fly, such as causing a flat spot, which is a phenomenon in which the tire is deformed because the change is large at room temperature and high temperature.

Aramid has lower shrinkage stress, excellent creep properties and very high modulus properties compared to nylon. In addition, the change amount of modulus of aramid at room temperature and high temperature is small, and when aramid is used, the flat spot phenomenon hardly arises even after a long time parking. Such aramid is mainly used in high-grade tires, where the quality of the tire is very important, but it is difficult to be applied to general-purpose tires due to the high price. In addition, aramid has a high modulus, it is difficult to be applied to a general tire because it is very difficult to expand during tire molding and vulcanization, it is difficult to ensure long-term durability due to low elongation.

To compensate for this, a hybrid structure of a hybrid structure using nylon and aramid has been developed. In case of using such a twisted yarn, expansion problems and fatigue durability problems during tire manufacturing can be solved.

Nylon, rayon, aramid,

Tire cords made of fibers such as polyester or hybrid twisted yarn are generally rolled together with the rubber component for adhesion with rubber. That is, the rolling process is involved in the tire manufacturing process. By the way, when the rolling process for the adhesion of the tire cord and the rubber is applied in the manufacturing process of the tire, the process cost is increased, the density of the tire is increased more than necessary due to the rolling, the weight of the tire may be unnecessarily increased.

In the process of rolling rubber on tire cords, solid rubber is generally used. The product formed by the rolling of such rubber is 200_ or less, especially 5 쌘! It is difficult to make a thin film form of about 30_, and when the product is used as a reinforcement, the thickness and weight of the tire increases. 2019/245337 1 »（： 1 ^ 1 {2019/007540

On the other hand, in recent years, tire manufacturers are trying to reduce the thickness of the rubber jeungje for ultra-lightening the tire and lightening the reinforcement. Rolling resistance (R / R) is related to the weight of the tire and has a major impact on the car's fuel consumption and carbon dioxide emissions. For example, the higher rolling resistance (R / R) increases the energy required to drive a car. Also, the resistance to rotation, tilt and acceleration of the car is closely related to the car weight. Therefore, studies have been made to reduce the weight of the automobile by reducing the tire weight, and consequently reduce the energy consumption.

Therefore, it is necessary to develop a tire cord having a thin thickness and excellent adhesion to rubber.

[Content of invention]

【Problem to solve】

The present invention is to solve the above limitations and problems of the related art.

One embodiment of the present invention, to provide a rubber reinforcement having excellent adhesion to the rubber.

Another embodiment of the present invention, even with a thin thickness to provide a rubber reinforcement that can express the low performance of the tire reinforcement. Another embodiment of the present invention, to provide a rubber reinforcement that can contribute to the thickness of the rubber layer and the weight reduction of the tire.

Another embodiment of the present invention, to provide a rubber reinforcement that can be maintained to the durability of the tire.

Another embodiment of the present invention is to provide a rubber reinforcement having a thin rubber compound layer, which is difficult to achieve through a rolling process using a rubber in a solid state.

Another embodiment of the present invention is to provide a rubber reinforcing material that has excellent adhesion to rubber without undergoing a rolling process during a tire manufacturing process, and may have the same level of durability as a tire manufactured by rolling. 2019/245337 1 »（： 1 ^ 1 {2019/007540

Another embodiment of the present invention, to provide a method for producing such a rubber reinforcement and a tire comprising such a rubber reinforcement.

Another embodiment of the present invention, to provide a lightweight tire. In addition to the above aspects of the present invention, other features and advantages of the present invention will be described below, or from such description will be clearly understood by those skilled in the art.

[Measures of problem]

In order to solve this problem, an embodiment of the present invention includes a fiber substrate, an adhesive layer disposed on the fiber substrate and a rubber compound layer disposed on the adhesive layer, the adhesive layer is resorcinol-formaldehyde- Latex 0¾ 凡), wherein the rubber compound layer is formed by a rubber compound liquid, wherein the rubber compound liquid is 10 to 40% by weight of the elastomeric composition and 60 to 90% by weight based on the total weight of the rubber compound liquid. Provided is a rubber reinforcement comprising a solvent.

The rubber compound layer has a thickness of 5,200.

The elastomeric composition includes at least one elastomer selected from natural rubber, styrene butadiene rubber, butadiene rubber, chloroprene rubber, isobutylene rubber, isotrene rubber, nitrile rubber, butyl rubber and neoprene rubber.

The solvent includes at least one selected from toluene, naphtha, methanol, xylene and tetrahydrofuran.

The fiber substrate is

And textile substrates. Another embodiment of the present invention, preparing a fiber substrate, forming an adhesive layer on the fiber substrate, and applying a rubber compound liquid on the adhesive layer and heat treatment to form a rubber compound layer on the adhesive layer Comprising the step, wherein the rubber compound liquid provides a method for producing a rubber reinforcement, including 10 to 40% by weight of the elastomeric composition and 60 to 90% by weight of the solvent relative to the total weight of the rubber compound liquid.

The rubber compound layer has a thickness of 5 / pad 200.

The elastomeric composition is natural rubber, styrene butadiene rubber, butadiene 2019/245337 1 »（： 1 ^ 1 {2019/007540

At least one elastomer selected from rubber, chlorostyrene rubber, isobutylene rubber, isotrene rubber, nitrile rubber, butyl rubber and neoprene rubber.

The solvent includes at least one selected from toluene, naphtha, methanol, xylene and tetrahydrofuran. Another embodiment of the present invention includes a fiber base material and a rubber coating layer on the fiber base material, the rubber coating layer is formed by a rubber coating liquid, the rubber coating liquid, based on the total weight of the rubber coating liquid, 5 to 30 weight A rubber reinforcement is provided, comprising% rubber compound solids and 70 to 95 weight percent solvent.

The rubber coating layer has a thickness of 10 to 100 _.

The rubber compound solids include at least one rubber component selected from natural rubber, styrene butadiene rubber, butadiene rubber, chloroprene rubber, isobutylene rubber, isoprene rubber, nitrile rubber, butyl rubber and neoprene rubber and carbon black.

The rubber compound solids includes 50 to 78 parts by weight of the rubber component and 22 to 50 parts by weight of carbon black, based on 100 parts by weight of the total. The solvent includes at least one selected from toluene, naphtha, methanol, xylene and tetrahydrofuran.

The rubber coating liquid has a viscosity of 200 to 90, 000 acid ⁵ .

The fiber substrate is any one of a fiber yarn (31 · !!), a textile substrate and a cord.

The rubber reinforcement further includes an adhesive layer on the fiber substrate, and the rubber coating layer is disposed on the adhesive layer.

The adhesive layer includes resorcinol-formaldehyde-latex (¾ 凡). Another embodiment of the present invention provides a tire including the rubber reinforcement.

The general description of the invention as above illustrates the invention or 2019/245337 1 »（： 1 ^ 1 {2019/007540

It is for illustrative purposes only and does not limit the scope of the present invention.

【Effects of the Invention】

Since the rubber reinforcing material according to an embodiment of the present invention has excellent adhesion to rubber, it may be strongly adhered to rubber without undergoing a rolling process in a tire manufacturing process. According to the present invention, since the rubber reinforcement is adhered to the rubber without going through the rolling process, the tire manufacturing cost is reduced, the rolling density is increased more than necessary, and the tire weight is unnecessarily increased. Is prevented.

When the rubber reinforcing material according to an embodiment of the present invention is used as a cap ply, belt or carcass of a tire, the rolling process may be omitted, and thus the tire manufacturing process may be simplified, and the thickness and total weight of the tire may be reduced. This can be reduced. In addition, the adhesion of the rubber reinforcement material is greatly increased, and the air pocket (show ^

This decrease reduces the tire failure rate. In addition, the tire according to the present invention may have the same level of durability as that of the tire manufactured through the rolling process, even if the tire is manufactured without the rolling process.

In addition, according to an embodiment of the present invention, it is possible to meet the needs of tire manufacturers to reduce the thickness of the rubber layer in order to reduce the weight of the tire and the weight of the reinforcement. According to the present invention, the tire weight is reduced by the rubber reinforcing material having a thin thickness and excellent rubber reinforcement performance, thereby reducing rolling resistance / 幻, improving fuel economy of the vehicle, and also lowering carbon dioxide emissions.

In particular, in the case of an electric vehicle using a battery, it is necessary to reduce the weight of the body to improve the mileage and fuel economy. When the lightweight tire reinforcing material according to an embodiment of the present invention is applied, the tire is made lightweight, and the fuel efficiency and economical efficiency of the electric vehicle can be improved.

【Brief Description of Drawings】

The accompanying drawings are included to assist in understanding the present invention and to form a part of the specification, to illustrate embodiments of the present invention, and to explain the principles of the present invention together with the detailed description of the invention.

1 is a partial cutaway view of a tire according to an embodiment of the present invention. 2019/245337 1 »（： 1 ^ 1 {2019/007540

2 is a schematic cross-sectional view of a rubber reinforcement according to an embodiment of the present invention.

3 is a schematic view of a twisted yarn.

4 is a schematic cross-sectional view of a rubber reinforcement according to another embodiment of the present invention.

5 is a schematic cross-sectional view of a rubber reinforcement according to another embodiment of the present invention.

6 is a schematic cross-sectional view of a rubber reinforcement according to another embodiment of the present invention.

7 is a schematic cross-sectional view of a rubber reinforcement according to another embodiment of the present invention.

8 is a schematic cross-sectional view of a rubber reinforcement according to another embodiment of the present invention.

[Specific contents to carry out invention]

Hereinafter, with reference to the accompanying drawings will be described embodiments of the present invention;

It will be apparent to those skilled in the art that various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention. Accordingly, the invention includes all modifications and variations that fall within the scope of the invention as set forth in the claims and their equivalents.

Shapes, sizes, ratios, angles, numbers, and the like disclosed in the drawings to describe embodiments of the present invention are exemplary, and thus the present invention is not limited by the matters shown in the drawings. Like elements may be referred to by like reference numerals throughout the specification.

When the term 'comprises ¹ , ¹ has', and 'includes', as used herein, other parts may be added unless the expression “only” is used. When a component is expressed in the singular, the plural is included unless specifically stated otherwise. In addition, in interpreting a component, even if there is no separate description, it is interpreted as including an error range.

In the case of the description of the positional relationship, for example, 'on', 'on', 2019/245337 1 »（： 1 ^ 1 {2019/007540

When the positional relationship between two parts is described as 'below', 'beside', etc., one or more other parts may be located between the two parts unless the expression 'immediately' or 'direct' is used. .

In the case of a description of a temporal relationship, for example, when the temporal after-term relationship is described as 'after ¹ ', 'after', 'after', 'before', etc., the expression 'immediately' or 'direct' is not used. It may also include cases that are not continuous unless otherwise noted.

The term "at least one" should be understood to include all possible combinations from one or more related items.

Each of the features of the various embodiments of the invention may be combined or combined with one another in whole or in part, and various interlocking and driving technically may be possible, and each of the embodiments may be independently implemented with respect to each other or may be implemented in association with each other. It may be. One embodiment of the present invention provides a tire 101 comprising rubber reinforcements 201 and 301 (see FIGS. 1 and 2).

1 is a partial cutaway view of a tire 101 in accordance with one embodiment of the present invention. 1, the tire 101 is a tread (63 ₍ 5) (10), shoulder (3110111 (1) (20), sidewall (¥ 311) (30), bead 0368 (1) (40) , Belt 03610 (50), inner liner (111 1 61 ·) 60, carcass (030833) 70, and cap plies 17) 90.

The tread 10 is the part that directly contacts the road surface. The tread 10 is a strong rubber layer attached to the outside of the cap ply 90 and is made of rubber having excellent abrasion resistance. The tread 10 plays a direct role in transmitting the driving and braking force of the vehicle to the ground. Grooves (recesses) are formed in the tread 10 region.

The shoulder 20 is a corner portion of the tread 10 that is connected to the side wall 30. Shoulder 20, along with sidewall 30, is one of the weakest parts of a tire.

Sidewall 30 is a tire 101 that connects the tread 10 and the bead 40. 2019/245337 1 »（： 1 ^ 1 {2019/007540

Laterally, it protects the carcass 70 and provides lateral stability to the tire.

The bead 40 is a region containing an iron wire wound around the end of the carcass 70, and has a structure that coats the cord with a rubber film. The bead 40 serves to mount and secure the tire 101 to the turbulence (\ vheel tail). The belt 50 is a coat layer located midway between the tread 10 and the carcass 70. The belt 50 serves to prevent damage to internal components such as the carcass 70 due to an impact from the outside or external conditions, and keeps the shape of the tread 10 flat so that the tire 101 and the road surface Ensure that the contact is best maintained. The belt 50 may include rubber reinforcements 201 and 301 according to another embodiment of the present invention (see FIGS. 2 and 4).

The inner liner 60 is a tubeless (used instead of a tube in a retirement tire, and is made of special rubber that is not air permeable or very little. The inner liner 60 prevents air filled in the tire 101 from leaking.

The carcass 70 is made by stacking several sheets of cord paper made of strong synthetic fibers, and is an important part for forming the skeleton of the tire 101. Carcass 70 serves to withstand the load, the septum received by the tire 101 and to maintain the air pressure. Carcass 70 may include a rubber reinforcement (201, 301) according to another embodiment of the present invention,

Groove 80 refers to coarse groove 0 in the tread region. The groove 80 functions to increase the drainage of the tire when driving on wet roads.

The cap fly 90 is a protective layer under the tread 10 to protect other components therein. The cap fly 90 is essential for high speed traveling vehicles. In particular, as the running speed of an automobile increases, problems such as deterioration of ride comfort due to deformation of the belt portion of the tire have occurred, and the importance of the cap fly 90 for preventing deformation of the belt portion is increasing. Cap fly 90 may be made of a rubber reinforcement (201, 301) according to another embodiment of the present invention. The tire 101 according to an embodiment of the present invention includes rubber reinforcements 201 and 301. The rubber reinforcements 201 and 301 may be applied to the cap ply 90 and may be applied to at least one of the belt 50 and the carcass 70.

Other embodiments of the present invention provide rubber reinforcements 201 and 301. example 2019/245337 1 »（： 1 ^ 1 {2019/007540

The rubber reinforcement 201, 301 according to other embodiments of the invention is a fibrous substrate 210, 110, an adhesive layer 220 disposed on the fiber substrate 210, 110 and a rubber compound disposed on the adhesive layer 220. Layer 230.

The fibrous substrate may be any of fiber yarns 731... And textile substrate 210. Fiber yarns include plywood (110).

2 is a schematic cross-sectional view of a rubber reinforcement 201 according to another embodiment of the present invention.

The rubber reinforcement 201 of FIG. 2 illustrates the use of a textile substrate 210 as the fiber substrate. However, one embodiment of the present invention is not limited thereto, and fiber yarns 731 · !! may be used as the fiber substrate.

As the textile substrate 210, a fabric composed of woven fiber yarns !! can be used. As the fiber yarn, for example, a conjugate twisted yarn 110 composed of two or more lower twisted yarns 111 and 112 can be used (see FIG. 3). Fiber yarns are made of nylon, rayon, aramid and

It may include at least one of the polyesters included.

According to one embodiment of the invention, a fabric made using polyester, including nylon, rayon, aramid and can be used as the textile substrate 210. For example, the textile substrate 210 may be made by the weaving of the twisted yarn 110 made of lower twist yarns 111 and 112 selected from nylon, rayon, aramid and polyester.

According to an embodiment of the present invention, the twisted yarn 110 includes hybrid twisted yarns in which two or more lower twisted yarns that are not identical to each other are staging. Such hybrid twisted yarn may include, for example, nylon low twisted yarn and aramid low twisted yarn.

3 is a schematic diagram of the twisted yarn 110.

Referring to FIG. 3, the twisted yarn 110 includes a first lower twisted yarn 111 and a second lower twisted yarn 112, and the first lower twisted yarn 111 and the second lower twisted yarn 112 are staged together. have. The first lower twisted yarn 111 has a first twisting direction, the second lower twisted yarn 112 has a second twisted direction, and the first lower twisted yarn 111 and the second lower twisted yarn 112 together have a third twisted twist. It is staged in the direction. Where the second kink 2019/245337 1 »（： 1 ^ 1 {2019/007540

The direction may be the same direction as the first twisting direction, and the third twisting direction may be opposite to the first twisting direction. However, the twist direction is not limited thereto.

The first twist and the second twist may be the same or different. The 11 lower twisted yarns 111 and the second lower twisted yarns 112 may have a twist number of, for example, 150 to 50 ¾ ¾.

The 11 lower twist yarns 111 and the second lower twist yarns 112 may be the same as or different from each other. For example, the first lower twisted yarns 111 and the second lower twisted yarns 112 may each be selected from polyesters including nylon, rayon, aramid and. As the twisted yarn 110, for example, there is a hybrid twisted yarn in which the first lower twisted yarn 111 is nylon and the second lower twisted yarn 112 is aramid.

The adhesive layer 220 includes resorcinol-formaldehyde-latex. For example, the adhesive layer 220 may be formed by an adhesive coating liquid containing a resorcinol-formaldehyde-latex needle and a solvent. According to another embodiment of the present invention, the adhesive layer 220 may include an epoxy compound layer and a resorcinol-formaldehyde-latex layer disposed on the epoxy compound layer.

Resorcinol-formaldehyde-latex, also referred to as “1¾”, serves as an adhesive component. Resorcinol-formaldehyde-latex, in particular, has the affinity and adhesion between the textile substrate 210, which is a fibrous substrate, and the rubber component. To improve the adhesion between the textile substrate 210 and the rubber compound layer 230 and to improve the adhesion between the rubber reinforcement 201 and the rubber, thus the textile substrate 210 and the rubber compound layer 230. They are attached to each other stably without being separated from each other, and defects are prevented from occurring during the manufacturing process of the tire 101. Also, the rubber reinforcing material 201 and the rubber (for example, tread, etc.) are one in the finished tire after vulcanization. It can be bonded to maintain excellent adhesion.

The rubber compound layer 230 may be formed by a rubber compound liquid including an elastomeric composition and a solvent. The rubber compound liquid may comprise 10 to 40 wt% of the elastomeric composition and 60 to 90 wt% of the solvent. The elastomeric composition contained in the rubber compound liquid constitutes the rubber compound layer 230. 2019/245337 1 »（： 1 ^ 1 {2019/007540

More specifically, in consideration of volatilization of the solvent contained in the rubber compound liquid, the rubber compound liquid may include 10 to 30% by weight of the elastomeric composition and 70 to 90% by weight of the solvent. In this case, when the solvent is volatilized after preparing the rubber compound liquid, the content of the elastomer contained in the rubber compound liquid may be 10 to 40% by weight.

The elastomeric composition may comprise 30 to 70 weight percent elastomer and 30 to 70 weight percent additive.

For example, the elastomeric composition is, for example, natural rubber 천연, styrene butadiene rubber (況幻, butadiene rubber 犯, chloroprene rubber (00 and isobutylene rubber (比 고무, isoprene rubber (1 則, nitrile rubber) I), at least one elastomer selected from butyl rubber and neoprene rubber. As additives, there are additives used to form rubber compounds, for example, carbon black, para oil, zinc oxide, stearic acid, antioxidants, sulfur, vulcanization accelerators, active agents, adhesives, adhesives and the like.

The solvent is not particularly limited as long as it is a substance capable of dissolving the elastomer. In particular, the material capable of dissolving the rubber component may be used as a solvent according to an embodiment of the present invention. For example, the solvent may include at least one selected from toluene, naphtha, methanol, xylene, and tetrahydrofuran. Toluene, naphtha, methanol, xylene and tetrahydrofuran may be used alone or in combination.

When the concentration of the elastomeric composition in the rubber compound solution is less than 10% by weight, the thickness of the rubber compound layer 230 becomes thin and adhesion and adhesion are not properly expressed. Accordingly, deterioration of manufacturing characteristics of the tire and a problem of tire failure during driving may occur.

On the other hand, when the concentration of the elastomeric composition in the rubber compound liquid exceeds 40% by weight, the stirring property is lowered due to the viscosity increase, so that the dispersibility of the rubber compound liquid is lowered, which causes problems such as poor coating property and uneven coating thickness. Is brought about.

This rubber compound layer (230) is made of natural rubber 렌, styrene butadiene rubber (부 10, butadiene rubber 幻, chloroprene rubber (00 and isobutylene). 2019/245337 1 »（： 1 ^ 1 {2019/007540

Rubber (¾), isoprene rubber (1, nitrile rubber (部幻, butyl rubber and neoprene rubber).

The rubber compound layer 230 has a thickness 1) of 5_ to 200_.

As shown in FIG. 2, the thickness 11 of the rubber compound layer 230 is located on the opposite side from the adhesive layer 220 from one side of the rubber compound layer 230 in contact with the adhesive layer 220. Measured by distance to the other side of.

When the thickness (1: 1) of the rubber compound layer 230 is less than ¾, the rubber compound layer 230 does not have sufficient adhesiveness and adhesion, thereby deteriorating tire manufacturing characteristics, making it difficult to develop tire durability, Defects may occur.

If the thickness 0: 1 of the rubber compound layer 230 exceeds 200, the thickness of the rubber reinforcement 201 may be increased to increase the thickness of the tire. In particular, when the thickness 1) of the rubber compound layer 230 exceeds 200_, bubbles are generated in the rubber compound layer 230 during the volatilization of the solvent, which makes it difficult for the rubber reinforcing material 201 to have a uniform thickness. Air in the tire when applied to the tire

To reduce tire quality and to increase the defective rate. In addition, there is a disadvantage in that the coating operation must be performed several times to form the thick rubber compound layer 230, which is inefficient in process and may result in deterioration of the tire quality and defective rate.

More specifically, the rubber compound layer 230 may have a thickness 1) of 5 ^ to 30 ·.

In a conventional rubber reinforcing material, a rubber substrate is rolled on the fiber substrates 210 and 110 to form a rubber layer corresponding to the rubber compound layer 230 of the present invention. Since the rubber substrate has a predetermined thickness, the rubber layer of the rubber reinforcement formed according to the conventional method generally has a thickness of 1000, or more, and at least 800_ or more.

On the other hand, the rubber compound layer 230 according to another embodiment of the present invention may have a thin thickness (1: 1) of 200 ^ or less because it is formed by dipping or coating a rubber compound liquid. According to one embodiment of the invention, rubber 2019/245337 1 »（： 1 ^ 1 {2019/007540

Since the compound layer 230 has a thin thickness (b) of 5 to 200, the overall thickness of the rubber reinforcement 201 becomes thin. Thus, the thickness of the tire using this rubber reinforcement 201 can be thinned.

The rubber reinforcement 201 according to another embodiment of the present invention may be applied to the cap ply 90, the belt 50, or the carcass 70 of the tire 101.

4 is a schematic cross-sectional view of a rubber reinforcement 301 according to another embodiment of the present invention.

The rubber reinforcement 301 of FIG. 4 illustrates the use of a twisted yarn 110 as a fiber substrate. The twisted yarn 110 may be formed by two or more lower twisted yarns 111 and 112 as described above. However, one embodiment of the present invention is not limited thereto, and other twisted yarns known in the art may be used to prepare the rubber reinforcement 301.

The rubber reinforcing material 301 according to another embodiment of the present invention is a fiber-based joint twisted yarn 110, an adhesive layer 220 disposed on the twisted yarn 110 and a rubber compound layer disposed on the adhesive layer 220. 230.

Since the twisted yarn 110, the adhesive layer 220 and the rubber compound layer 230 have already been described, a detailed description thereof is omitted to avoid redundancy.

Hereinafter, a method of manufacturing the rubber reinforcing materials 201 and 301 according to another embodiment of the present invention.

According to another embodiment of the present invention, a method of manufacturing the rubber reinforcing materials 201 and 301 may include preparing the fiber substrates 210 and 110 and forming the adhesive layer 220 on the fiber substrates 210 and 110. And applying a rubber compound liquid on the adhesive layer 220 and heat treatment to form the rubber compound layer 230 on the adhesive layer 220.

The fibrous substrates 210 and 110 may be any one of the fiber yarns 31... And the textile substrate 210. Plywood yarn 110 may be used as the fiber yarn. Textile substrate 210 is formed by weaving fiber yarns 11. As the twisted yarn 110, a hybrid twisted yarn composed of two or more lower twisted yarns that are not identical to each other may be used. 2019/245337 1 »（： 1 ^ 1 {2019/007540

According to another embodiment of the present invention, the hybrid twisted yarn may include nylon low twisted yarn and aramid low twisted yarn. Nylon low twist yarns may have a fineness of 300 to 2000 (and more specifically, may have a fineness of 1100 to 1400 (.) Aramid low twist yarns may have a fineness of 500 to 3000 (1 (3 fineness, more specifically 1300). It may have a fineness of from 1700 (for example, 300 to 2000 filament nylon filament as the first lower yarn (111), 500 to 3000 (aramid filament as the second secondary yarn 112), Cable coder 0: 16 sets) The twisted yarns 110 can be produced by simultaneously performing the lower and upper edges in the counterclockwise direction and the upper edge in the clockwise direction using a twisting machine, respectively. It can have a twist of 1 ¾1.

The adhesive layer 220 is formed on the fiber base 210, 110.

The adhesive layer 220 may be formed by an adhesive coating liquid comprising resorcinol-formaldehyde-latex (needle and a solvent. The step of forming the adhesive layer 220 may include an adhesive coating liquid on the fiber bases 210 and 110. It may include the step of applying and heat treatment.

There is no particular limitation on the method of applying the adhesive coating liquid on the fiber bases 210 and 110. For example, the fiber base (210, 110), by dipping ₍₍₁ 1¾) in the adhesive coating may be such that the adhesive coating applied onto the fiber base (210, 110). For example, a fiber base (210, 110 The dipping process can be accomplished by passing through the adhesive coating liquid, which can be done in 1¾ (± 16) for the dipping apparatus ([ ⁾ 1 ^ 11 where tension, dipping time and temperature can be controlled.

In addition to the immersion process, the adhesive coating liquid may be applied onto the fiber substrates 210 and 110 by coating using a blade or coater or spraying using an injector.

The forming of the adhesive layer 220 may further include applying an adhesive coating solution on the fiber substrates 210 and 110 and heat-treating for 130 to 170 ° (: 80 to 120 seconds). The resorcinol-formaldehyde-latex (coarse layer 222 is cured and 2019/245337 1 »（： 1 ^ 1 {2019/007540

It is fixed and the adhesive layer 220 is completed. By this heat treatment, the adhesive layer 220 may be more stably formed.

After the adhesive layer 220 is formed, a rubber compound solution is applied on the adhesive layer 220 and heat treated to form a rubber compound layer 230 on the adhesive layer 220. The rubber compound liquid includes the elastomeric composition and the solvent. Specifically, the rubber compound liquid includes 10 to 40 wt% of the elastomeric composition and 60 to 90 wt% of the solvent. Considering the volatilization of the solvent contained in the rubber compound liquid, on the basis of the preparation, the rubber compound liquid may include 10 to 30% by weight of the elastomeric composition and 70 to 90% by weight of the solvent. In this case, when the solvent is volatilized after preparing the rubber compound liquid, the content of the elastomer contained in the rubber compound liquid may be 10 to 40% by weight.

When the concentration of the elastomeric composition in the rubber compound solution is less than 10% by weight, the thickness () of the rubber compound layer 230 becomes thin and adhesion and adhesion may not be properly expressed. Accordingly, a problem of deterioration of manufacturing characteristics of the tire and tire failure during driving may occur. On the other hand, when the concentration of the elastomeric composition in the rubber compound liquid exceeds 40% by weight, the viscosity of the rubber compound liquid due to the agitation of the adhesive liquid is lowered, the dispersibility of the rubber compound liquid is lowered, resulting in a decrease in coating properties, coating thickness nonuniformity And so on.

Therefore, in the rubber compound liquid, the concentration of the elastomeric composition is adjusted in the range of 10 to 40% by weight.

The elastomeric composition may comprise 30 to 70 wt% of the elastomer and 30 to 70 wt% of the additive.

For example, the elastomeric composition may be, for example, natural rubber (■), styrene butadiene rubber (butadiene rubber seedling), chloroprene rubber (00 and isobutylene rubber (myo), isoprene rubber (110, nitrile) It may include at least one elastomer selected from rubber (parent), butyl rubber and neoprene rubber as additives such as carbon black, para oil, zinc oxide, stearic acid, antioxidant, sulfur, vulcanization accelerator, activator, adhesive, adhesive, etc. There is this.

The solvent may comprise at least one selected from toluene, naphtha, methanol, xylene and tetrahydrofuran, which may be alone or 2019/245337 1 »（： 1 ^ 1 {2019/007540

Can be used in combination.

There is no particular limitation on the method of applying the rubber compound liquid on the adhesive layer 220, and a known coating method may be applied.

For example, to form the rubber compound layer 230, the fibrous substrates 210, 110 coated with the adhesive layer 220 may be immersed in the rubber compound liquid. By this immersion, a rubber compound liquid is applied onto the adhesive layer 220.

In addition, the rubber compound liquid may be applied on the adhesive layer 220 by a coma coating using a comma coater. At this time, the coating may be made at a temperature condition of 80 to 100 ° C. This temperature corresponds to the lowest temperature at which the solvent can be volatilized.

However, another embodiment of the present invention is not limited thereto, and the coating of the rubber compound liquid may be performed by a gravure coating method, a micro gravure coating method, or the like.

After coating the rubber compound liquid, the coated rubber compound liquid may be heat treated. That is, forming the rubber compound layer 230 may include applying a rubber compound liquid on the adhesive layer 220 and then heat treating the rubber compound liquid. The heat treatment may be in a heat treatment apparatus. For heat treatment, heat may be applied for 30 to 150 seconds at a temperature of 80 to 160 ° C. As a result, the rubber compound layer 230 is formed on the adhesive layer 220.

Through this process, the rubber reinforcing materials 201 and 301 are manufactured, and the manufactured rubber reinforcing materials 201 and 301 are wound on a winder.

In this case, the rubber compound layer 230 may have a thickness t 1 of 5 // m to 200_. The thickness U of the rubber compound layer 230 is less than 5 m, and the rubber compound layer 230 does not have sufficient adhesiveness and adhesive force, thereby deteriorating tire manufacturing characteristics and causing a defect in the tire. When the thickness t 1 of the rubber compound layer 230 exceeds 200_, the thickness of the rubber reinforcement 201 may be increased to increase the thickness of the tire.

More specifically, the rubber compound layer 230 may have a thickness t 1 of 5 m to 30.

Next, a slitting step may optionally be performed. 2019/245337 1 »（： 1 ^ 1 {2019/007540

According to necessity, or to suit the purpose of use, it may further comprise the step of cutting the rubber reinforcing material 201 made of a plate, this cutting is called slitting. The slitting step may be omitted. There is no particular limitation on the method of cutting or slitting.

At the request of the customer or customer, for example, the rubber reinforcement 201 may be cut using a conventional cutter knife or heating knife, in a width of 3 mm to 50 mm or by limiting the number of warp heads. Slitting can be achieved by this. According to another embodiment of the present invention, the cut rubber reinforcement 201 may have a width of 3mm to 50mm. Through this process, the rubber reinforcing material 201, according to the embodiments of the present invention

301 is completed.

The rubber reinforcements 201 and 301 thus produced can be used, for example, as the cap ply 90 of the tire 101.

Rubber reinforcement 201 according to an embodiment of the present invention has excellent adhesion to the rubber, it can be easily attached to the rubber without a conventional rolling process. When such a rubber reinforcement 201 is used as the cap ply 90, the manufacturing process of the tire can be simplified because the rolling process can be omitted. In addition, the adhesion of the cap ply 90 is greatly increased, thereby reducing the air pocket in manufacturing the green tires, thereby reducing the tire failure rate. In addition, a thin and light tire 101 can be made because it does not go through a rolling process. These rubber reinforcements 201, 301 may be applied to at least one of the belt and the carcass. Another embodiment of the present invention provides a tire 101 comprising rubber reinforcements 201 ', 301', 401 ', 501' (see FIGS. 1 and 5, 6, 7 8).

1 is a partial cutaway view of a tire 101 in accordance with one embodiment of the present invention. Referring to FIG. 1, the tire 101 includes a tread L0, a shoulder 20, a side wal 1 30, a bead 40, and a belt. 50, an inner liner 60, a cascass 70, and a capply 90. 2019/245337 1 »（： 1 ^ 1 {2019/007540

The tread 10 is the part that directly contacts the road surface. The tread 10 is a strong rubber layer attached to the outside of the cap ply 90 and is made of rubber having excellent abrasion resistance. The tread 10 plays a direct role in transmitting the driving and braking force of the vehicle to the ground. Grooves 006 and 80 are formed in the tread 10 region.

The side wall 30 is the side of the tire 101 connecting the tread 10 and the bead 40 to protect the carcass 70 and provide lateral stability to the tire.

The bead 40 is a region containing an iron wire wound around the end of the carcass 70, and has a structure that coats the cord with a rubber film. The bead 40 serves to mount and secure the tire 101 to the turbulence (\ vheel 1 ^ 111). The belt 50 is a coat layer located midway between the tread 10 and the carcass 70. The belt 50 serves to prevent damage to internal components such as the carcass 70 due to an impact from the outside or external conditions, and keeps the shape of the tread 10 flat so that the tire 101 and the road surface Ensure that the contact is best maintained. The belt 50 may include rubber reinforcements 201 \ 301 ', 401', 5010 according to another embodiment of the present invention (see Figures 5, 6, 7, 8).

The inner liner 60 is a tubeless (used instead of a tube in the muscle tire and is made of special rubber that is not air permeable or very little. The inner liner 60 prevents air filled in the tire 101 from leaking.

The carcass 70 is made by stacking several sheets of cord paper made of strong synthetic fibers and is an important part for forming the skeleton of the tire 101. Carcass 70 serves to withstand the load, impact received by the tire 101 and to maintain the air pressure. Carcass 70 may include rubber reinforcement 201 ', 301', 401 ', 501' according to another embodiment of the present invention.

Groove 80 refers to coarse groove ₀ in the tread region. The groove 80 functions to increase the drainage of the tire when driving on wet roads.

The cap fly 90 is a protective layer under the tread 10, with other configurations inside 2019/245337 1 »（： 1 ^ 1 {2019/007540

Protect the elements. The cap fly 90 is essential for high speed traveling vehicles. In particular, as the running speed of an automobile increases, problems such as deterioration of ride comfort due to deformation of the belt portion of the tire have occurred, and the importance of the cap fly 90 for preventing deformation of the belt portion is increasing. The cap ply 90 may be made of rubber reinforcement 201 ', 301', 401 ', 501' according to another embodiment of the present invention.

The tire 101 according to an embodiment of the present invention includes rubber reinforcements 201 ', 301', 401 ', and 501'. The rubber reinforcement 201 ', 301', 401 ¹ , 501 'may be applied to the carcass 70 and may be applied to at least one of the belt 50 and the cap fly 90.

Other embodiments of the present invention provide rubber reinforcements 201 ', 301', 401 ', 501'.

5 is a schematic cross-sectional view of a rubber reinforcement 201 'according to another embodiment of the present invention.

The rubber reinforcement 201 'according to another embodiment of the present invention includes a fiber substrate 210' and a rubber coating layer 240 on the fiber substrate 210 '.

The fibrous substrate can be either textile substrate 210 'and fiber yarn (three). Fiber yarns include plywood (110). The rubber reinforcement 201 'of FIG. 5 illustrates the use of a textile substrate 210' as a fiber substrate. However, one embodiment of the present invention is not limited thereto, and fiber yarns 731 · !! may be used as the fiber substrate.

As the textile substrate 210 ', a woven fabric using fiber yarns may be used. The fiber yarns may comprise at least one of nylon, rayon, aramid and polyester, including. In addition, the textile substrate 210 'may be formed by weaving filaments, or may be formed by weaving using lower twist yarns formed by lower edges of the filaments. However, another embodiment of the present invention is not limited thereto, and textile substrates 210 'woven by various fibers known in the art may be used as the fiber substrate according to another embodiment of the present invention.

For example, according to another embodiment of the present invention, nylon, rayon, 2019/245337 1 »（： 1 ^ 1 {2019/007540

Fabrics made using polyesters including aramid and can be used as the textile substrate 210 '. The textile substrate 210 'may be made by weaving a twisted yarn 110 composed of nylon, rayon, aramid, and lower twist yarns 111 and 112 selected from polyesters including (see FIG. 3).

According to another embodiment of the present invention, the twisted yarn 110 includes hybrid twisted yarns composed of two or more lower twisted yarns that are not identical to each other. Such hybrid braided twisted yarn may include, for example, nylon low twisted yarn, aramid low twisted yarn, or Megyeon low twisted yarn.

The rubber coating layer 240 is disposed on the fibrous substrate. Referring to FIG. 5, the rubber coating layer 240 is disposed on a textile substrate 210 ′ that is a fiber substrate.

According to another embodiment of the present invention, the rubber coating layer 240 is formed by a rubber coating liquid. The rubber coating liquid may include a rubber compound solids and a solvent.

For example, the rubber coating liquid, based on the total weight of the rubber coating liquid, 5 to

30 weight percent rubber compound solids and 70 to 95 weight percent solvent. The rubber compound solids contained in the rubber coating liquid constitute the rubber coating layer 240.

When the concentration of rubber compound solids in the rubber coating liquid is less than 5% by weight, the viscosity of the rubber coating liquid is excessively low, and the thickness of the rubber coating layer 240 becomes thin so that adhesiveness and adhesion cannot be properly expressed. Accordingly, deterioration of manufacturing characteristics of the tire and a problem of tire failure during driving may occur.

On the other hand, when the concentration of the rubber compound solids in the rubber coating liquid exceeds 30% by weight, the agitation is lowered due to the viscosity increase, so that the dispersibility of the rubber compound solids is lowered, which causes problems such as poor coating properties and uneven coating thickness. Caused.

More specifically, in consideration of volatilization of the solvent included in the rubber coating liquid, the rubber coating liquid may include 3 to 25% by weight of rubber compound solids and 75 to 97% by weight of the solvent. In this case, when the solvent is volatilized after the rubber coating solution is prepared, the content of the rubber compound solids contained in the rubber coating solution \\) 2019/245337 1 »（： 1 ^ 1 {2019/007540

It may be 5 to 30% by weight.

In addition, the rubber coating liquid has a viscosity of 200 to 90,000. The viscosity of the rubber coating liquid is 200 0? If less than, due to the high flowability due to the low viscosity of the rubber coating liquid, it may be difficult to perform a coating operation for coating the rubber coating liquid on the fiber substrate, the thickness of the rubber coating layer 240 becomes thinner to express the performance as a tire reinforcement material Difficult to do

On the other hand, when the viscosity of the rubber coating liquid exceeds 90,000 0, it is difficult to stir the rubber coating liquid, it is difficult to prepare a uniform rubber coating liquid, and also due to the high viscosity, it is difficult to uniform coating, the variation in coating thickness occurs Can be. As a result, difficulties may occur in the production of the rubber reinforcement 201 'and the tire production, and it may be difficult for the rubber reinforcement 201' to express the tire reinforcement function.

Rubber compound solids may include rubber components and carbon black. The rubber compound solids are, for example, natural rubber seedlings, styrene butadiene rubber 810, butadiene rubber 犯幻, chloroprene rubber (00 and isobutylene rubber (犯幻, isoprene rubber (1 幻, nitrile rubber (!?),) Carbon black and at least one rubber component selected from butyl rubber and neoprene rubber.

In addition, the rubber compound solids may further include an additive. Participants include, for example, para-oil, zinc oxide, stearic acid, antioxidants, sulfur, vulcanization accelerators, activators, pressure-sensitive adhesives, and adhesives.

For example, the rubber compound solids may comprise 50 to 70 weight percent rubber component, 15 to 40 weight percent carbon black and 5 to 15 weight percent additives relative to the total weight of the rubber compound solids.

In the rubber compound solids, when the content of the rubber component is less than 50% by weight, the viscosity of the rubber coating liquid is 200 0? There exists a possibility that it may become less than and coating property may fall. On the other hand, in the rubber compound solids, when the content of the rubber component exceeds 70% by weight, the viscosity of the rubber coating liquid may exceed 90,000 0 ?.

Rubber component and carbon black are the main components of rubber compound solids. Thus, the mixture of rubber component and carbon black may be referred to simply as the “main ingredient”.

According to another embodiment of the present invention, the rubber component and carbon black 2019/245337 1 »（： 1 ^ 1 {2019/007540

The mixture (main ingredient) may comprise 50 to 78 parts by weight of the rubber component and 22 to 50 parts by weight of carbon black, based on 100 parts by weight of the total.

If the content of the rubber component is less than 50 parts by weight and the content of the carbon black is more than 50 parts by weight based on 100 parts by weight of the total weight of the mixture of the rubber component and the carbon black (main component), the viscosity of the rubber coating liquid is 200 0? It is lowered below, and the rubber coating liquid can flow down without being coated on the fiber base material.

On the other hand, when the content of the rubber component exceeds 78 parts by weight and the content of the carbon black is less than 22 parts by weight based on 100 parts by weight of the total weight of the mixture of the rubber component and the carbon black (main component), the rubber compound solids are smooth in the solvent. It does not dissolve and can form lumps. This is due to excessive crosslinking of the rubber, resulting in lumps that do not dissolve in the solvent even if the content (concentration) of the rubber compound solids in the rubber coating liquid is reduced. As a result, the viscosity of the rubber coating liquid is 90, 000 0? It may be excessively increased in excess of, and the rubber coating liquid may not be smoothly coated on the fiber base, and the thickness of the rubber coating layer 240 may be uneven.

More specifically, the mixture (main component) of the rubber component and the carbon black may include 60 to 78 parts by weight of the rubber component and 22 to 40 parts by weight of carbon black, based on 100 parts by weight of the total. In order to form a more uniform high-coating layer 240, the mixture (main component) of the rubber component and the carbon black may include 70 to 75 parts by weight of the rubber component and 25 to 30 parts by weight of carbon black, based on 100 parts by weight of the total weight. have.

The solvent contains a substance capable of dissolving the rubber component. According to another embodiment of the present invention, there is no particular limitation on the type of solvent. For example, the solvent may include at least one selected from toluene, naphtha, methanol, xylene, and tetrahydrofuran. Toluene, naphtha, methanol, xylene and tetrahydrofuran may be used alone or in combination. The rubber coating layer 240 formed by the rubber coating liquid is made of natural rubber 則, styrene butadiene rubber, 幻, butadiene rubber 犯則, chloroprene rubber (00 and isobutylene rubber (¾ 則, isoprene rubber (110, nitrile rubber （10 ， At least one selected from butyl rubber and neoprene rubber. Also, rubber 2019/245337 1 »（： 1 ^ 1 {2019/007540

Coating layer 240 includes carbon black.

The rubber coating layer 240 has a thickness t l 'of 10 to 100_.

As shown in FIG. 5, the thickness U ′ of the rubber coating layer 240 is a distance from one surface of the rubber coating layer 240 contacting the textile substrate 210 ′, which is a fiber substrate, to the other surface of the rubber coating layer 240. Is measured.

When the thickness t l ′ of the rubber coating layer 240 is less than 10 m, the rubber coating layer 240 does not have sufficient adhesiveness and adhesive force, thereby deteriorating tire manufacturing characteristics, making it difficult to express the durability of the tire, and inferior tires. May occur.

When the thickness t 1 ′ of the rubber coating layer 240 exceeds 100, the thickness of the rubber reinforcement 201 ′ may be increased to increase the thickness of the tire. In addition, when the thickness (tr) of the rubber coating layer 240 exceeds 100, bubbles may be generated in the rubber coating layer 240 during the volatilization of the solvent, which may make it difficult for the rubber reinforcing material 201 ′ to have a uniform thickness. When a rubber reinforcement 201 'is applied to a tire, an air pocket may occur in the tire. If an air pocket occurs, the tire quality deteriorates and the defective rate increases. In addition, since the coating operation has to be performed several times to form the thick rubber coating layer 240, the process is inefficient, and the quality of the tire and the defective rate may be caused.

In the rubber reinforcing material according to the related art, the rubber substrate is rolled on a fiber substrate, for example, the textile substrate 210 ', and a rubber layer is formed. Since the rubber substrate has a predetermined thickness, the rubber layer of the rubber reinforcement formed according to the method of the related art generally has a thickness of 1000 _{/ i} m or more, at least 800_ or more.

On the other hand, another rubber coating layer 240 of another embodiment of the present invention may have a thin thickness (tr) of 10/100 because it is formed by dipping or coating the rubber coating liquid. According to another embodiment of the present invention, since the rubber coating layer 240 has a thin thickness tr of 100 rn or less, the overall thickness of the rubber reinforcement 201 'is thinned. Accordingly, the thickness of the tire using this rubber reinforcement 201 'can be made thin. 2019/245337 1 »（： 1 ^ 1 {2019/007540

The rubber reinforcement 201 ′ according to another embodiment of the present invention may be applied to the carcass 70, the cap fly 90 or the belt 50 of the tire 101. 3 is a schematic view of a twisted yarn, and FIG. 6 is a schematic cross-sectional view of a rubber stiffener 301 'according to another embodiment of the present invention.

According to another embodiment of the present invention, fiber yarns may be used as the fiber substrate of the rubber reinforcement 301 '. As the fiber yarn, for example, untwisted yarn or one lower twist yarn 111 can be used. Alternatively, a combined twisted yarn 110 composed of two or more lower twisted yarns 111 and 112 can be used as the fiber yarn (see FIG. 3).

6 illustrates that the twisted yarn 110 is used as the fiber base material of the rubber reinforcement 3010. The twisted yarn 110 is formed by two or more lower twisted yarns 111 and 112 as described above. However, one embodiment of the present invention is not limited thereto, and other ply-twisted yarns known in the art may be used to prepare the rubber reinforcement 301 '. 112 may be the same as or different from each other, for example, the first lower twist yarn 111 and the second lower twist yarn 112 may be selected from polyesters including nylon, rayon, aramid and m, respectively. According to another embodiment of the present invention, the twisted yarn 110 may be referred to as a code.

The rubber reinforcing material 301 ′ according to another embodiment of the present invention includes a twisted yarn 110 that is a fiber base and a rubber coating layer 240 on the twisted yarn 110. Since the rubber coating layer 240 has already been described, a detailed description thereof will be omitted to avoid duplication.

7 is a schematic cross-sectional view of a rubber reinforcement 401 'in accordance with another embodiment of the present invention.

The rubber reinforcement 401 shown in FIG. 7 further includes an adhesive layer 250 on the fibrous substrate, compared to the rubber reinforcement 2010 shown in FIG. 5, wherein the rubber coating layer 240 is disposed on the adhesive layer 250. .

Specifically, the rubber reinforcement 4010 shown in FIG. 7 is a textile substrate 210 'which is a fiber substrate, an adhesive layer 250 disposed on the textile substrate 210' and a rubber coating layer 240 disposed on the adhesive layer 250. ). 2019/245337 1 »（： 1 ^ 1 {2019/007540

The adhesive layer 250 includes resorcinol-formaldehyde-latex. For example, the adhesive layer 250 may be formed by an adhesive coating liquid comprising resorcinol-formaldehyde-latex (coarser and solvent. According to another embodiment of the present invention, the adhesive layer 250 may be And a resorcinol-formaldehyde-latex disposed on the epoxy compound layer and the epoxy compound layer. Resorcinol-formaldehyde-latex, also referred to as "1¾", serves as an adhesive component. The synol-formaldehyde-latex improves the adhesion between the textile substrate 21 (7) and the rubber coating layer 240 by improving the affinity and adhesion between the textile substrate 2100 and the rubber component, in particular, The adhesion between the reinforcing material 201 'and the rubber is improved, so that the textile substrate 210' and the rubber coating layer 240 are stably attached to each other without being separated from each other, The occurrence of defects can be prevented.

The adhesive layer 250 may include an epoxy compound. The adhesive layer 250 may include, for example, an epoxy compound layer and a resorcinol-formaldehyde-latex (coarse layer) disposed on the epoxy compound layer.

The rubber reinforcement 501 ′ shown in FIG. 8 further includes an adhesive layer 250 on the fibrous substrate as compared to the rubber reinforcement 301 ′ shown in FIG. 6, and the rubber coating layer 240 is on the adhesive layer 250. Is placed on.

Specifically, the rubber reinforcing material 501 ′ shown in FIG. 8 is a bonded fiber yarn 110 that is a fibrous substrate, an adhesive layer 250 disposed on the twisted yarn 110, and a rubber coating layer 240 disposed on the adhesive layer 250. ).

Hereinafter, the manufacturing method of the rubber reinforcing materials 201 'and 3010 described above will be described. The manufacturing method of the rubber reinforcing materials 201' and 301 'according to another embodiment of the present invention is a fiber base material 210' and 110. Preparing a step, forming the adhesive layer 250 on the fiber substrate (210 ', 110) and applying a rubber coating liquid on the adhesive layer 250 and heat treatment to form a rubber coating layer 240 on the adhesive layer 250 It includes a step.

The fiber base (210 \ 110) is one of the fiber yarns (!) And the textile base (210 '). 2019/245337 1 »（： 1 ^ 1 {2019/007540

It can be either. The textile substrate 210 'is formed by weaving fiber yarns 31. As the fiber yarn, yarn, lower twisted yarn or twisted yarn 110 can be used. As the twisted yarn 110, a hybrid twisted yarn composed of two or more lower twisted yarns that are not identical to each other may be used. Ply-twisted yarn 110 may be used as a cord.

For example, the hybrid braided twisted yarn may include nylon low twisted yarn and aramid low twisted yarn. Nylon low twist yarns 300 to 2000

It may have a fineness, and the aramid lower yarn may have a fineness of 500 to 3000 ₍ no. Specifically, 300 to 2000 (nylon filament may be used as the first lower twist yarn 111) to remove 500 to 3000 aramid filaments. 2, the lower twist yarn (112), using a cable corder a twister can be produced by combining the lower twist and the upper edge in the counterclockwise direction, and the upper edge in the clockwise direction using a twisting machine at the same time. The twisted yarn 110 may have a twist number of 150 to 500 1 m 1 \ 1.

The rubber coating solution is coated on the fiber substrates 210 and 110 and dried to form the rubber coating layer 240.

The rubber coating liquid contains a rubber compound solids and a solvent. Specifically, the rubber coating liquid contains 5 to 30% by weight of rubber compound solids and 70 to 95% by weight of solvent.

When the concentration of the rubber compound solids in the rubber coating liquid is less than 5% by weight, the thickness (1: 1 ') of the rubber coating layer 240 becomes thin and adhesion and adhesion are not properly expressed. Accordingly, a problem of deterioration of manufacturing characteristics of the tire and tire failure during driving may occur. On the other hand, when the concentration of the rubber compound solid content in the rubber coating liquid exceeds 30% by weight, the viscosity of the adhesive liquid is lowered due to the increase in viscosity, the dispersibility of the rubber coating liquid is lowered, thereby reducing the coating property, coating thickness unevenness, etc. Problems arise.

Therefore, in the rubber coating liquid, the concentration of the rubber compound solids is adjusted in the range of 5 to 30% by weight.

Considering the volatilization of the solvent contained in the rubber coating liquid, the rubber coating liquid is 3 to 25% by weight of the rubber compound solids and 75 to 97 based on the gradation 2019/245337 1 »（： 1 ^ 1 {2019/007540

It may comprise weight percent solvent. In this case, when the solvent is volatilized after the rubber coating solution is prepared, the content of the rubber compound solids contained in the rubber coating solution may be 5 to 30% by weight.

In addition, the rubber coating liquid has a viscosity of 200 to 90, 000 acid ³ .

The viscosity of the rubber coating liquid is 200 0? If less than, due to the high flowability due to the low viscosity of the rubber coating liquid, it may be difficult to perform a coating operation for coating the rubber coating liquid on the fiber substrate, and the thickness of the rubber coating layer (240) becomes thin to express performance as a tire reinforcement material. Difficult to do

On the other hand, when the viscosity of the rubber coating liquid exceeds 90, 000 0 ?, it is difficult to stir the rubber coating liquid, it is difficult to prepare a uniform rubber coating liquid, and also because of the high viscosity, it is difficult to uniform coating, the coating thickness variation Can be generated. As a result, difficulties may occur in the production of rubber reinforcements (2010 production and tire production), and it may be difficult for the rubber reinforcement materials 201 'to express tire reinforcement functions.

Rubber compound solids include the rubber component and carbon black.

Rubber compound solids include, for example, natural rubber 0®), styrene butadiene rubber (FYYO), butadiene rubber 幻, chloroprene rubber (00 and isobutylene rubber (IN, isoprene rubber (), nitrile rubber seedlings), butyl Carbon black and at least one rubber component selected from rubber and neoprene rubber.

In addition, the rubber compound solids may further include an additive. Participants include, for example, para-oil, zinc oxide, stearic acid, antioxidants, sulfur, vulcanization accelerators, activators, pressure-sensitive adhesives, adhesives and the like.

For example, the rubber compound local component may include 50 to 70 wt% of the rubber component, 15 to 40 wt% of carbon black and 5 to 15 wt% of the additive, based on the total weight of the rubber compound solids.

In the rubber compound solids, when the content of the rubber component is less than 50% by weight, the viscosity of the rubber coating liquid is 200 0? There is a fear that the coating property is lowered and the coating property is lowered, and when the content of the rubber component exceeds 70% by weight, the viscosity of the rubber coating liquid may exceed 90, 000 0 ?.

Rubber component and carbon black are the main components of rubber compound solids. therefore, 2019/245337 1 »（： 1 ^ 1 {2019/007540

The mixture of the rubber component and the carbon black may simply be referred to as a "main component." The mixture of the rubber component and the carbon black (main component) is 50 to 78 parts by weight of the rubber component and 22 to 50 parts by weight of carbon based on 100 parts by weight of the total. May contain black.

When the content of the rubber component is less than 50 parts by weight and the content of the carbon black is more than 50 parts by weight based on 100 parts by weight of the total weight of the mixture of the rubber component and the carbon black (main component), the viscosity of the rubber coating liquid is 200 0. ? It lowers below, and the rubber coating liquid can flow down without being coated on the fiber base.

On the other hand, when the content of the rubber component exceeds 78 parts by weight and the content of the carbon black is less than 22 parts by weight based on 100 parts by weight of the total weight of the rubber component and the carbon black mixture (main component), the rubber compound solids are smooth in the solvent. It does not dissolve and forms lumps, and the viscosity of rubber coating liquid is 90, 000 0? Due to excessive increase in excess, not only the rubber coating liquid is not smoothly coated on the fiber base, but also the thickness of the rubber coating layer 240 may be uneven. More specifically, the mixture (main component) of the rubber component and carbon black,

60 to 78 parts by weight of the rubber component and 22 to 40 parts by weight of carbon black, based on 100 parts by weight. In order to form a more uniform rubber coating layer 240, the mixture (main component) of the rubber component and the carbon black may include 70 to 75 parts by weight of the rubber component and 25 to 30 parts by weight of carbon black, based on 100 parts by weight of the total weight. have.

The solvent includes a substance capable of dissolving the rubber component. For example, the solvent may comprise at least one selected from toluene, naphtha, methanol, xylene and tetrahydrofuran. Toluene, naphtha, methanol, xylene and tetrahydrofuran may be used alone or in combination with each other.

There is no particular limitation on the method of applying the rubber coating liquid on the adhesive layer 250, and a known coating method may be applied.

For example, to form the rubber coating layer 240, the fiber substrate 210 \ 110 may be immersed in the rubber coating liquid. By this immersion, a rubber coating liquid is applied onto the fiber bases 210 'and 110. 2019/245337 1 »（： 1 ^ 1 {2019/007540

In addition, the rubber coating liquid may be applied onto the fiber bases 210 'and 110 by a comma coating using a comma coater. At this time, the coating may be made at a temperature condition of 15 to 50 ° C. This temperature corresponds to the lowest temperature at which the solvent can be volatilized.

However, another embodiment of the present invention is not limited thereto, and the coating of the rubber coating liquid may be performed by a gravure coating method, a micro gravure coating method, or the like.

After coating the rubber coating liquid, the coated rubber coating liquid is dried. Heat treatment may be performed for drying. For example, the step of forming the rubber coating layer 240 may include a step of applying a rubber coating solution on the fiber substrate (210 ', 110), and then heat treatment.

The heat treatment may be in a heat treatment apparatus. For the heat treatment, heat may be applied for 30 to 150 seconds at a temperature of 70 to 150 ° C. Accordingly, the rubber coating layer 240 is formed on the fiber substrate 210 ', 110.

Through this process, rubber reinforcements 201 'and 301' are manufactured, and the manufactured rubber reinforcements 201 'and 301' are wound on a winder.

The rubber coating layer 240 prepared as described above may have a thickness U ′ of 10 · 100. The thickness U ′ of the rubber coating layer 240 is less than 10_, and the rubber coating layer 240 does not have sufficient adhesiveness and adhesive force, thereby deteriorating tire manufacturing characteristics and causing a defect in the tire. When the thickness t r of the rubber coating layer 240 exceeds 100_, the thickness of the rubber reinforcing material 201 ′ may be increased to increase the thickness of the tire.

Then, optionally a slitting step may be performed.

The plate-shaped rubber reinforcement 201 'can be cut as needed or according to the purpose of use, which is called slitting (Sl i tt ing). The slitting step may be omitted. There is no particular limitation on the method of cutting or slitting.

Through this process, the rubber reinforcement 201 ', 301' according to the embodiments of the present invention is completed.

The rubber reinforcement 201 ', 301' manufactured in this way is, for example, 2019/245337 1 »（： 1 ^ 1 {2019/007540

It can be applied to the cap ply 90, the belt 50, the carcass 70, or the like of the tire 101.

The rubber reinforcing material 201 ′ according to the embodiment of the present invention has excellent adhesion to rubber and can be easily attached to rubber without a conventional rolling process. When such rubber reinforcement 201 'is used, for example, as carcass 70, the manufacturing process of the tire can be simplified because the rolling process can be omitted. In addition, the adhesion of the carcass 70 is greatly increased, the air in the production of green tires

This reduces the tire failure rate. In addition, a thin and light tire 101 can be made because it does not go through a rolling process. Such rubber reinforcements 201 ′, 301 ′ may also be applied to the belt 50 or the cap ply 90.

According to another embodiment of the present invention, a method of manufacturing the rubber reinforcement materials 401 ′ and 501 ′ may include forming an adhesive layer 250 on the fiber base 210 ′ and 110 before forming the rubber coating layer 240. It may further comprise a step.

Specifically, the rubber reinforcing material 401 ', according to another embodiment of the present invention

50), the method of preparing a fiber substrate (210 ', 110), the step of forming an adhesive layer 250 on the fiber substrate (210', 110) and applying a rubber coating liquid on the adhesive layer 240 Drying to form a rubber coating layer 240 on the adhesive layer 250.

The adhesive layer 250 is formed on the fiber substrate 210 ', 110.

The adhesive layer 250 may be formed by an adhesive coating liquid comprising resorcinol-formaldehyde-latex (a tooth and a solvent. The forming of the adhesive layer 250 may be performed on the fibrous substrates 210 ′ and 110. And applying heat treatment to the adhesive coating solution.

There is no particular limitation on the method of applying the adhesive coating liquid on the fiber bases 210 ', 110. For example, the adhesive coating liquid may be applied onto the fiber substrates 210 'and 110 by immersing the fiber substrates 210' and 110 in the adhesive coating liquid (1 塔 1 塔). The dipping process may be performed by passing through the adhesive coating liquid 210 'and 110. The dipping process may be performed in an immersion apparatus (1) ^ 11 for which tension, dipping time and temperature can be controlled. 2019/245337 1 »（： 1 ^ 1 {2019/007540

Can be.

In addition to the immersion process, the adhesive coating liquid may be applied onto the fiber substrates 210 'and 110 by coating using a blade or a coater or spraying using an injector.

The step of forming the adhesive layer 250 may be performed by applying an adhesive coating liquid on the fiber substrates 210 ′ and 110, drying for 80 to 120 seconds at 100 to 170 ° (:), and performing heat treatment at 200 to 250 ° [ The heat treatment may be carried out in a heat treatment apparatus Resorcinol-formaldehyde- by heat treatment

The adhesive layer 250 is completed by curing and fixing. By this heat treatment, the adhesive layer 250 may be more stably formed.

The adhesive layer 250 may include an epoxy compound. The adhesive layer 250 may have, for example, a structure in which a resorcinol-formaldehyde-latex layer is disposed on the epoxy compound.

After the adhesive layer 250 is formed, a rubber coating liquid is coated on the adhesive layer 250 and dried to form a rubber coating layer 240 on the adhesive layer 250. Still other embodiments of the present invention provide a rubber reinforcement.

A rubber reinforcing material according to another embodiment of the present invention includes a fiber substrate and a rubber coating layer on the fiber substrate.

The rubber coating layer is disposed on the fibrous substrate. For example, the rubber coating layer is disposed on a textile substrate which is a fiber substrate.

According to another embodiment of the present invention, the rubber coating layer is formed by a rubber coating liquid. The rubber coating liquid may include a rubber compound solids and a solvent.

For example, the rubber coating liquid is, based on the total weight of the rubber coating liquid, 5 to

40 weight percent rubber compound solids and 60 to 95 weight percent solvent. The rubber compound solids contained in the rubber coating liquid constitute the rubber coating layer.

When the concentration of the rubber compound solids in the rubber coating liquid is less than 5% by weight, the viscosity of the rubber coating liquid is excessively low, and the thickness of the rubber coating layer becomes thin. 2019/245337 1 »（： 1 ^ 1 {2019/007540

Tackiness and adhesion are not properly expressed. Accordingly, deterioration of manufacturing characteristics of the tire and a problem of tire failure during driving may occur.

On the other hand, when the concentration of the rubber compound solids in the rubber coating liquid exceeds 40% by weight, the agitation is lowered due to the viscosity increase, so that the dispersibility of the rubber compound solids is lowered, which causes problems such as poor coating properties and uneven coating thickness. Caused.

The solvent contains a substance capable of dissolving the rubber component. According to another embodiment of the present invention, there is no particular limitation on the type of solvent. For example, the solvent may comprise at least one selected from toluene, naphtha, methanol, xylene and tetrahydrofuran. Toluene, naphtha, methanol, xylene and tetrahydrofuran may be used alone or in combination. The rubber coating layer formed by the rubber coating liquid is made of natural rubber (NR), styrene butadiene rubber (況 R), butadiene rubber (BR), chloroprene rubber (CR) and isobutylene rubber (IBR), isoprene rubber (IR), nitrile rubber (NBR), butyl rubber and neoprene rubber. In addition, the rubber coating layer may include carbon black.

The rubber coating layer has a thickness of 5 to 200 im or 10 to 100. The thickness of the rubber coating layer is measured by the distance from one surface of the rubber coating layer in contact with the textile substrate, which is a fiber substrate, to the other surface of the rubber coating layer.

When the thickness of the rubber coating layer is less than 5 m, the rubber coating layer may not have sufficient adhesiveness and adhesive strength, thereby deteriorating tire manufacturing characteristics, making it difficult to express the durability of the tire, and causing a defect in the tire.

When the thickness of the rubber coating layer exceeds 200 _, the thickness of the rubber reinforcement may be increased to increase the thickness of the tire. In addition, when the thickness of the rubber coating layer exceeds 200 /, bubbles may be generated in the rubber coating layer during the volatilization of the solvent, so that it may be difficult for the rubber reinforcement to have a uniform thickness. (Ai r Pocket) may occur. If pockets occur, tire quality deteriorates and the defective rate increases. In addition, the coating process has to be performed several times to form a thick rubber coating layer, which is inefficient in the process and deteriorates tire quality. 2019/245337 1 »（： 1 ^ 1 {2019/007540

And a defective rate may result.

In the rubber reinforcing material according to the related art, the rubber substrate is rolled on a fiber substrate, for example, a textile substrate, to form a rubber layer. Since the rubber base material has a predetermined thickness, the rubber layer of the rubber reinforcing material formed according to the method of the related art generally has a thickness of at least 1000; and at least 800_.

On the other hand, another rubber coating layer according to another embodiment of the present invention may have a thin thickness of ¾ ■ to 200 /, or 10 to 100 / pe because it is formed by dipping or coating the rubber coating liquid. According to another embodiment of the present invention, since the rubber coating layer has a thin thickness of 200 m or less, the overall thickness of the rubber reinforcement is thinned. Thus, the thickness of the tire using such rubber reinforcement can be made thin.

The rubber reinforcement further includes an adhesive layer on the fibrous substrate, wherein the rubber coating layer may be disposed on the adhesive layer.

The adhesive layer comprises resorcinol-formaldehyde-latex. For example, the adhesive layer may be formed by an adhesive coating liquid containing resorcinol-formaldehyde-latex (coarser and solvent). According to another embodiment of the present invention, the adhesive layer may include an epoxy compound layer and a resorcinol-formaldehyde-latex (coarse layer) disposed on the epoxy compound layer.

Resorcinol-formaldehyde-latex, also known as “1¾”, acts as an adhesive component. Resorcinol-formaldehyde-latex, in particular, improves the affinity and adhesion between the textile substrate, which is a fibrous substrate, and the rubber component. It improves the adhesion between the textile base and the rubber coating layer, and improves the adhesion between the rubber reinforcement and the rubber, so that the textile base and the rubber coating layer can be stably attached to each other without being separated from each other and prevent the occurrence of defects in the tire manufacturing process. do.

The adhesive layer may comprise an epoxy compound. The adhesive layer may include, for example, an epoxy compound layer and a resorcinol-formaldehyde-latex (1x1) layer disposed on the epoxy compound layer.

Hereinafter, the manufacturing method of the rubber reinforcement described above will be described. 2019/245337 1 »（： 1 ^ 1 {2019/007540

According to another aspect of the present invention, there is provided a method of manufacturing a rubber reinforcing material, preparing a fiber base material, forming an adhesive layer on the fiber base material, and applying a rubber coating solution on the adhesive layer and performing heat treatment to form a rubber coating layer on the adhesive layer. Forming a step.

The rubber coating solution is coated on the fiber substrate thus formed and dried to form a rubber coating layer.

The rubber coating liquid contains a rubber compound solids and a solvent. Specifically, the rubber coating liquid contains 5 to 40% by weight of rubber compound solids and 60 to 95% by weight of solvent.

When the concentration of the rubber compound solids in the rubber coating liquid is less than 5% by weight, the thickness of the rubber coating layer becomes thin and adhesion and adhesion are not properly expressed. Accordingly, a problem of deterioration of manufacturing characteristics of the tire and tire failure during driving may occur. On the other hand, when the concentration of the rubber compound solid content in the rubber coating liquid exceeds 40% by weight, the viscosity of the adhesive liquid is lowered due to the increase in viscosity, the dispersibility of the rubber coating liquid is lowered, thereby reducing the coating property, uneven coating thickness, etc. Problems arise.

Therefore, in the rubber coating liquid, the concentration of the rubber compound solids is adjusted in the range of 5 to 40% by weight.

There is no particular limitation on the method of applying the rubber coating liquid on the adhesive layer, and a known coating method may be applied.

For example, to form a rubber coating layer, the fibrous substrate may be dipped in the rubber coating liquid. By this immersion, a rubber coating liquid is applied onto the fiber base material.

In addition, the rubber coating liquid may be applied onto the fiber substrate by a comma coat ing using a comma coater. In this case, the coating may be performed at a temperature of 15 to 50 C. This temperature corresponds to the lowest temperature at which the solvent can be volatilized.

However, another embodiment of the present invention is not limited thereto, and the coating of the rubber coating liquid may be performed by a gravure coating method or a micro gravure coating method. 2019/245337 1 »（： 1 ^ 1 {2019/007540

After coating the rubber coating liquid, the coated rubber coating liquid is dried. Heat treatment may be performed for drying. For example, the step of forming the rubber coating layer may include a step of applying a rubber coating liquid on the fiber substrate, followed by heat treatment.

The heat treatment may be in a heat treatment apparatus. For the heat treatment, heat may be applied for 30 to 150 seconds at a temperature of 70 to 150 ° (:). Thus, a rubber coating layer is formed on the fiber substrate.

Through this process, a rubber reinforcement is manufactured, and the manufactured rubber reinforcement is wound on a winder.

The rubber coating layer thus prepared is 5, to 200 // 111, or 10 / L to

It may have a thickness of 100. The thickness of the rubber coating layer is less than 5 sun], and the rubber coating layer does not have sufficient adhesiveness and adhesive strength, thereby deteriorating tire manufacturing characteristics and causing a defect in the tire. When the thickness of the rubber coating layer exceeds 200, the thickness of the rubber reinforcement may be increased to increase the thickness of the tire.

Next, optionally

Steps may be performed.

The rubber reinforcement made of plate can be cut according to the needs or purpose of use.

It is called. The slitting step may be omitted. There is no particular limitation on the method of cutting or slitting.

Through this process, the rubber reinforcement according to the embodiments of the present invention is completed.

The rubber reinforcement thus produced may be applied to, for example, a cap ply, belt or carcass of a tire.

Rubber reinforcing material according to an embodiment of the present invention has excellent adhesion to the rubber, it can be easily attached to the rubber without the conventional rolling process. When such rubber reinforcement is used, for example, as carcass, the manufacturing process of the tire can be simplified because the rolling process can be omitted. In addition, the adhesiveness of the carcass is greatly increased, and the air pocket (show 01¾0) is reduced in manufacturing green tires, which reduces the tire defective rate. 2019/245337 1 »（： 1 ^ 1 {2019/007540

Thinner and lighter tires can be made because they are not processed. Such rubber reinforcements may also be applied to belts or cap plies.

The method of manufacturing a rubber reinforcing material according to another embodiment of the present invention may further include forming an adhesive layer on the fiber substrate before forming the rubber coating layer.

Specifically, the manufacturing method of the rubber reinforcing material according to another embodiment of the present invention, preparing a fiber substrate, forming an adhesive layer on the fiber substrate and coating the rubber coating liquid on the adhesive layer and dried on the adhesive layer Forming a rubber coating layer.

The adhesive layer is formed on the fibrous substrate.

The adhesive layer may be formed by an adhesive coating liquid containing resorcinol-formaldehyde-latex (coarser and solvent). Forming the adhesive layer may include applying an adhesive coating solution on a fiber substrate and heat treatment.

There is no particular limitation on the method of applying the adhesive coating liquid on the fiber substrate. For example, the adhesive coating liquid can be applied onto the fiber substrate by dipping (1 1½) the fiber substrate into the adhesive coating liquid. For example, the dipping process may be performed by passing the fibrous substrate through the adhesive coating liquid. In the dipping process, tension, dipping time and temperature can be controlled

Can be done.

In addition to the immersion process, the adhesive coating liquid may be applied onto the fiber substrate by coating using a blade or coater or spraying using an injector.

The forming of the adhesive layer may further include applying an adhesive coating solution on the fiber substrate, drying for 80 to 120 seconds at 100 to 170 ° (:), and heat treating at 200 to 250 ° (:). The heat treatment may be in a heat treatment apparatus. The heat treatment cures and fixes the resorcinol-formaldehyde-latex (coarse layer) to complete the adhesive layer. By such heat treatment, the adhesive layer may be more stably formed.

The adhesive layer may comprise an epoxy compound. For example, the adhesive layer includes a resorcinol-formaldehyde-latex 0¾ layer disposed on an epoxy compound layer. 2019/245337 1 »（： 1 ^ 1 {2019/007540

It may have a structure.

After the adhesive layer is formed, a rubber coating liquid is applied on the adhesive layer and dried to form a rubber coating layer on the adhesive layer. Hereinafter, the operation and effects of the invention will be described in more detail with reference to specific examples and comparative examples. However, these examples and comparative examples are only presented by way of example, by which the scope of the invention is not limited. <Example 1>

(1) Preparation of textile base material: nylon plain weave woven fabric

The fabric dough was woven using nylon filaments having a total fineness of 630de. At this time, weaving density was 55th / i-nch, weft density 46th / i nch so that the textile substrate 210 in the form of a fabric was prepared.

(2) adhesive layer formation

After the textile substrate 210 was dipped in the adhesive coating solution, the adhesive layer 220 was completed by heat treatment. At this time, the adhesive coating liquid contains 15% by weight of resorcinol-formaldehyde-latex (RFL) and 85% by weight of a solvent (water, ¾). Also, the adhesive coating liquid is applied on the textile substrate 210. Adhesive coating solution

Heat treated at 150 ° C. for 100 seconds.

(3) forming rubber compound layer

First, 60 parts by weight of carbon black, 20 parts by weight of para oil, 3 parts by weight of zinc oxide, 2 parts by weight of stearic acid, 2 parts by weight of antioxidant (RUBBER ANTIOXIDANTS, BHT), sulfur based on 100 parts by weight of styrene butadiene rubber (況 R) An elastic polymer composition was prepared comprising 2 parts by weight and 1 part by weight of vulcanizate on vulcanizers (ZnBX).

Next, a mixed solvent in which toluene and tetrahydrofuran were mixed at a weight ratio of 20:80 was prepared. 2019/245337 1 »（： 1 ^ 1 {2019/007540

Next, the rubber compound solution was prepared by dispersing the elastomeric composition at a concentration of 12% in a mixed solvent.

Using a comma coater, a rubber compound solution was applied onto the coating layer 230 formed on the textile substrate 210 and the solvent was volatilized at a temperature of 80 ° ⁽ :) to form a rubber compound layer 230. Here, the thickness U of the rubber compound layer 230 was 10 — As a result, a rubber reinforcing material 201 was produced.

(4) Manufacturing of rubber reinforcement for cap ply cut

The rubber reinforcement 201 thus prepared was cut to a width of 10 mm to prepare a rubber reinforcement for the cap ply 90. Cutter Knife was used for cutting.

(5) tire manufacturing

Tires of the 205 / 55R16 specification were made with the cut rubber reinforcement. For tire manufacturing, body plies and steel cord belts containing 1300De / 2ply HMLS tire cords were used.

Specifically, the body ply rubber is laminated on the inner liner rubber, the bead wire and the belt part are laminated, the prepared rubber reinforcement is added, and the rubber layers for forming the tread part, the shoulder part and the sidewall part are sequentially formed. Green tires were prepared. The green tire thus prepared was put in a vulcanization mold and vulcanized at 170 ° C. for 15 minutes to prepare a tire.

In the formation of the rubber compound layer 230, dispersing the elastomeric composition in a mixed solvent at a concentration of 17% to prepare a rubber compound liquid, and the thickness (1: 1) of the rubber compound layer 230 is 18 ! Except that, a tire was manufactured in the same manner as in Example 1.

In the formation of the rubber compound layer 230, elastic polymerization in a mixed solvent 2019/245337 1 »（： 1 ^ 1 {2019/007540

The tire was manufactured in the same manner as in Example 1, except that the composition was dispersed at a concentration of 25% to prepare a rubber compound liquid, and the thickness 1) of the rubber compound layer 230 was 23_. <Example 4>

In the formation of the rubber compound layer 230, dispersing the elastomeric composition in a concentration of 35% in a mixed solvent to produce a rubber compound liquid, and the thickness (1: 1) of the rubber compound layer 230 is 30, A tire was manufactured in the same manner as in Example 1, except for ¾.

Instead of forming a rubber compound thickening 230 using the rubber compounding liquid, an embodiment except that a rubber having a thickness of 1.6.11111 is placed on the adhesive layer 220 on the textile substrate 210 and rolled to form a rubber reinforcement. The tire was manufactured by the same method as 1.

A tire was manufactured in the same manner as in Example 1, except that the step of forming the rubber compound layer 230 was omitted.

In forming the rubber compound layer 230, a tire was manufactured in the same manner as in Example 1 except that the rubber compound solution was prepared by dispersing the elastomeric composition in a mixed solvent at a concentration of 45%.

(1) thickness measurement

! The thickness of the rubber compound layer 230 prepared in Example 1-4 and Comparative Examples 1-3 was measured using the ao of 1: 111: 0 0¾. 2019/245337 1 »（： 1 ^ 1 {2019/007540

(2) Adhesion ^ Sin) Test

The unvulcanized rubber (thickness 1.31ä) used for the carcass was cut into 100111 X 20011 (width X length) and a table film of 2011 X 15011 (width X length) was attached to the top of the cut uncured rubber. The rubber reinforcing materials prepared in Examples 1-4 and Comparative Examples 1-3 were laminated on the non-vulcanized rubber having M films attached thereto. And,

An adhesive layer composite was prepared by pressing a rubber reinforcement three times and compressing the rubber reinforcing material using an unloaded rubber.

The pressure-sensitive adhesive layer composite thus prepared was cut into lengths of 2 to 2.401 ^, and then pressed three times using a 5 urinary _§ metal cylindrical weight to squeeze the unvulcanized rubber. Next, the Scotch tape 01) was attached twice to the exposed surfaces of the rubber reinforcing materials prepared in Examples 1-4 and Comparative Examples 1-3 to prevent stretching, followed by 1 love 011 □ 태 印 &, 0 ^.

2712-041）

As a test method, the adhesion of the rubber reinforcing materials prepared in Examples 1-4 and Comparative Examples 1-3 was measured. This was applied.

In accordance with the method of 4393, the adhesive peel strength of the rubber reinforcement prepared in Examples 1-4 and Comparative Examples 1-3 on the carcass layer of the tire was measured. Specifically, 1. Rubber sheet of & · thickness, cord paper, each rubber reinforcement prepared in Examples 1-4 and Comparative Example 1-3, rubber sheet of 1.6111111 thickness, cord paper, 1. & ä thickness rubber sheet The sample was prepared by evaporating in order, and then vulcanized at 160 ° (: for 20 minutes at a pressure of 601¾ 八: 01 ² . Next, the vulcanized sample was cut to prepare a specimen having a width of 1 inch. Thus prepared specimens were subjected to a peel test at a rate of 11/1 11 at 25 ° (: 125) using a universal testing machine (1e Bei011 Co., Ltd.) to Examples 1-4 and The adhesive force of the rubber reinforcing material prepared in Comparative Example 1-3 was measured. At this time, the average value of the load generated at the time of peeling was calculated by the adhesive force.

(4) Weight index of rubber reinforcement

Of the 20 rubber reinforcing materials prepared in Examples 1-4 and Comparative Examples 1-3, respectively. 2019/245337 1 »（： 1 ^ 1 {2019/007540

The weights were measured and averaged.

(5) Tire weight index

Twenty tires were produced in Examples 1-4 and Comparative Examples 1-3, respectively. The weight of the tire thus manufactured was measured and averaged.

(6) Defective tire manufacturing

The incidence of defects during the manufacture of the tires according to Examples 1-4 and Comparative Examples 1-3 was investigated. Due to the characteristics of the tire manufacturing process, the rubber reinforcing material must have a certain level of adhesive performance, so that the rubber reinforcing material may be attached to the rubber without falling down and may lead to the tire manufacturing process. If the rubber reinforcement material does not have a certain level of adhesive performance, defects may occur due to flow down during the tire manufacturing process. In addition, if Ai Pocket occurs in the rubber compound layer, interfacial separation may occur in the rubber compound layer, resulting in tire failure.

Twenty tires were produced for each of Examples 1-4 and Comparative Examples 1-3, and the presence or absence of a defective tire was confirmed.

[Formula 1]

Tire manufacturing defect rate (%) = [(good tire number) / （20, tire evaluation number]] x 100

The results measured above are shown in Table 1 below.

[Table 1]

2019/245337 1 »（： 1 ^ 1 {2019/007540

Referring to Table 1, in Examples 1 to 4 according to the present invention, compared with Comparative Example 1 according to the conventional method, the thickness of the rubber compound layer 230 was reduced by 95% or more, and the rubber compound layer 230 In spite of the decrease in the thickness, it can be seen that it has an equivalent level of adhesion and adhesion. In addition, it can be seen that the weight of the tire according to Examples 1 to 4 is 0.391¾ to 0.4¾ lighter than the tire according to Comparative Example 1.

On the other hand, Example! Rubber reinforcement according to to 4 has an excellent adhesive force compared to the rubber reinforcement of Comparative Example 2 has significantly reduced the failure rate during tire manufacturing. In the case of Comparative Example 2, the rubber compound layer is not formed and thus has low adhesive force. In addition, in the case of Comparative Example 3, the rubber compound layer 230 is made of a rubber compound liquid containing a high concentration of the elastomeric composition, the thickness of the rubber compound layer 230 is non-uniform as 180 to 230_, but tire production Air pocket ^ nyoya) is reduced, it can be seen that the tire manufacturing defective rate is reduced compared to Comparative Example 2.

Example 5-9 Preparation of Rubber Reinforcement

(1) Manufacture of textile substrates: manufacturing of tire cord woven fabrics

A textile substrate 210 'was prepared by weaving a 1000 mM filament with a total fineness of 16 and weaving it with a cable corder at a density of 32 at the top and bottom edge of 47 (up to 1¾). 210 ') fiber 2019/245337 1 »（： 1 ^ 1 {2019/007540

Used as substrate.

The textile substrate 210 'thus prepared was immersed in a conventional epoxy compound and a resorcinol-formaldehyde-latex compound, dried and heat treated to form an adhesive layer on the textile substrate 210'.

(2) Rubber coating layer formation

A rubber coating solution for forming a rubber coating layer 240 was prepared according to the composition of Table 2.

Rubber compound solids include rubber components, carbon black and additives. As the rubber component, natural rubber (NR) and styrene butadiene rubber (SBR) were used.

Table 2 discloses the weight ratios of natural rubber (■), styrene butadiene rubber (XR) and carbon black. The weight ratio of the components in Table 2 represents the relative weights to 100 parts by weight of the mixture (main component) of the rubber component and carbon black. Specifically, the rubber compound solids comprise 94% by weight of the main component (a mixture of the rubber component and carbon black) and 6% by weight of the additive. Since the contents of the additives are all the same in Examples 5-9, the contents of the additives are not disclosed in Table 2.

As additives, para-oil, zinc oxide, stearic acid, antioxidants, sulfur and vulcanization accelerators were used. 5% by weight of paraoil, 0.3% by weight of zinc oxide, 0.2% by weight of stearic acid, 0.2% by weight of anti-aging agent (RUBBER ANTIOXIDANTS, BHT), 0.2% by weight of sulfur and vulcanization accelerator (vulcani zat ion accelerators) ZnBX) 0.1 wt% was used. A rubber compound composition of 15% by weight based on the total weight of the rubber coating solution was used.

Solvents include toluene and tetrahydrofuran. Toluene and tetrahydrofuran were mixed and used in a weight ratio of 20:80. 85% by weight of solvent was used based on the total weight of the rubber coating liquid.

A rubber coating liquid was prepared by dispersing and dissolving the rubber compound solids in the solvent prepared as described above in the weight ratio of Table 2. Rubber compound in Table 2 2019/245337 1 »（： 1 ^ 1 {2019/007540

Solids and solvent content are expressed in weight percent (%).

Using a comma coater (0) 1 <: 0 61), a rubber coating liquid was applied to the textile substrate 210 'and dried at a temperature of 80 ° (:) to volatilize the solvent to form a rubber coating layer 240. As a result, a rubber reinforcing material according to Example 5-9 was produced.

[Table 2]

<Evaluation 1> Solubility evaluation

The rubber compound solid content was smoothly dispersed in the mixed solvent and whether or not undispersed lumps were present was visually evaluated and determined as follows.

O: Smoothly distributed

X: Dispersion is not smooth and undispersed mass exists.

<Evaluation 2> Viscosity measurement

The viscosity of the rubber coating liquid was measured using a Brookfield DV2TLV viscometer (Tk: 0.09373) at standard conditions (temperature 20 ° C, 65% relative humidity). A total of six viscosities were measured in 30 seconds at 3 minutes under STP. Range of measurable viscosity with the device ^(viscosity range) (is 15-6000000, spindle used for evaluation is the VL-01, VL-02, VL-03, VL-04. 2019/245337 1 »（： 1 ^ 1 {2019/007540

Evaluation 3 Coating Evaluation

The coating property was evaluated when the rubber coating liquid was coated on a textile substrate (nylon plain woven fabric). For the evaluation of the coating, Hot Melt Coater HLC-1 from Chem Instrument si was used. After applying a temperature of 80 ° C to Rol l of the device, the coating property was evaluated while coating the rubber coating liquid on the textile substrate.

Evaluation 4 Thickness Measurement

The thickness of the rubber coating layer 240 formed on the rubber reinforcement prepared in Example 5-9 was measured using Vernier Cal ipers of Mi tutoyott.

The measurement results are shown in Table 3.

Table 3

Example 10-12 and Comparative Example 4 Tire Preparation

Tires of the 205 / 55x6 standard were manufactured using the rubber reinforcing materials of Examples 6, 7, and 9, and these were referred to as Examples 10, 11 and 12, respectively.

In addition, the tire was manufactured through a rubber crimping process, which is called Comparative Example 4. 2019/245337 1 »（： 1 ^ 1 {2019/007540

It was.

Specifically, for the manufacture of tires, body plies and steel cords (¾6) belts containing 1300¾ / 21) 1 to ¾ more tire cords were used. After laminating the body reinforcement rubber reinforcement on the inner liner rubber and laminating the bead wire and the belt part, the rubber reinforcement material prepared in the above examples and comparative examples was introduced (carcass), the tread part, the shoulder part and the side wall part A green tire was manufactured by sequentially forming a rubber layer for formation. The green tire thus prepared was placed in a vulcanization mold and vulcanized at 170 ° (: for 15 minutes to prepare a tire. The tires produced are 205/55 and 16 16.

<Evaluation 5> Durability evaluation

The durability of the tire manufactured in Example 10-12 was evaluated using the drum type running durability test machine.

Specifically, after applying the tire manufactured in Example 10-12 in the drum type running endurance tester, the high-speed running durability was evaluated while increasing the speed to 20 to 30 ^ 8! The durability was expressed as the time until the tire bursts (explosion or puncture) after the tire started running in the driving endurance tester.

The results are shown in Table 4.

[Table 4]

Referring to Table 4, Example 10-Tire manufactured by omitting the rolling process 2019/245337 1 »（： 1 ^ 1 {2019/007540

It can be confirmed that the tire of 12 has the same level of durability as that of the tire of Comparative Example 4 manufactured through a rolling process using a conventional tire cord in the related field. On the other hand, it can be seen that the tire of Example 10-12 is 0.3 to 0.41¾ lighter than the tire of Comparative Example 4.

As such, it can be seen that the tires of Examples 10-12 manufactured according to the present invention are light in weight and have the same durability as those of ordinary tires in related fields.

[Explanation of code]

10: tread 20: shoulder

30 ： Side wall 40 ： Bead

50 ： Belt 60 ： Inner Liner

70 ： carcass 80 ： groove

90 ： Cap fly 101 ： Tire

110: combined speaker 111: first lower speaker

112 ： 2nd lower twist yarn 201 ： Rubber reinforcement

210: textile base material 220: adhesive layer

230: Rubber compound layer 301: Rubber reinforcement

201 ': Rubber reinforcement 210': Textile base

240: rubber coating layer 250: adhesive layer

301 ': rubber reinforcement 401': rubber reinforcement

501 ': Rubber reinforcement

Claims

2019/245337 1 »（： 1 ^ 1 {2019/007540 【claims】

[Claim 1]

Fiber substrates;

An adhesive layer disposed on the fiber substrate; And

A rubber compound layer disposed on the adhesive layer;

The adhesive layer comprises resorcinol-formaldehyde-latex (rubber), the rubber compound layer is formed by a rubber compound liquid, the rubber compound liquid, 10 to 40% by weight relative to the total weight of the rubber compound liquid Comprising an elastomeric composition of from 60 to 90% by weight of a solvent,

Rubber reinforcement.

[Claim 2]

The method of claim 1,

The rubber compounding agent has a thickness of 5, 200 to 200 ·, rubber reinforcement.

[Claim 3]

The method of claim 1,

The elastomeric composition comprises at least one elastomer selected from natural rubber, styrene butadiene rubber, butadiene rubber, chloroprene rubber, isobutylene rubber, isoftenne rubber, nitrile rubber, butyl rubber and neoprene rubber.

[Claim 4]

The method of claim 1,

The solvent comprises at least one selected from toluene, naphtha, methanol, xylene and tetrahydrofuran.

[Claim 5] 2019/245337 1 »（： 1 ^ 1 {2019/007540

The method of claim 1,

The fiber base material is any one of a fiber yarn (731 · !!) and a textile base material, rubber reinforcement.

[Claim 6]

Fiber substrates; And

A rubber coating layer on the fiber substrate;

The rubber coating layer is formed by a rubber coating liquid,

The rubber coating liquid, based on the total weight of the rubber coating liquid, 5 to 30% by weight of the rubber compound solids and 70 to 95% by weight of the solvent, rubber reinforcement.

[Claim 71

The method of claim 6,

The rubber coating is a rubber reinforcement having a thickness of 10 to 100 III.

[Claim 8]

The method of claim 6,

The rubber compound solids,

At least one rubber component selected from natural rubber, styrene butadiene rubber, butadiene rubber, chloroprene rubber, isobutylene rubber, isoprene rubber, nitrile rubber, butyl rubber and neoprene rubber; And

Including carbon black;

Rubber stiffeners.

[Claim 9]

The method of claim 8,

The rubber compound solids, based on 100 parts by weight of the mixture of the rubber component and the carbon black,

50 to 78 parts by weight of a rubber component; And 2019/245337 1 »（： 1 ^ 1 {2019/007540

22 to 50 parts by weight of carbon black;

Rubber reinforcement comprising a.

[Claim 10]

The method of claim 6,

Wherein said solvent comprises at least one selected from toluene, naphtha, methanol, xylene and tetrahydrofuran.

[Claim 11]

The method of claim 6,

The rubber coating liquid has a viscosity of 200 to 90, 000 acid ³ , rubber reinforcement.

[Claim 12]

The method of claim 6,

The fiber base material is any one of a fiber yarn (731 · !!), a textile base material and a cord.

[Claim 13]

The method of claim 6,

Further comprising an adhesive layer on the fiber substrate,

The rubber coating layer is disposed on the adhesive layer, rubber reinforcement.

[Claim 14]

The method of claim 13,

The adhesive layer is resorcinol-formaldehyde-latex (including teeth, rubber reinforcement.

[Claim 15]

Fiber substrates; And

A rubber coating layer on the fiber substrate; 2019/245337 1 »（： 1 ^ 1 {2019/007540

The rubber coating layer is formed by a rubber coating liquid,

Wherein the rubber coating liquid contains 5 to 40% by weight of rubber compound solids and 60 to 95% by weight of solvent based on the total weight of the rubber coating liquid.

[Claim 16]

The method of claim 15,

The rubber coating layer has a thickness of 5 to 200, rubber reinforcement.

[Claim 17]

The method of claim 15,

Further comprising an adhesive layer between the fiber substrate and the coating layer,

The adhesive layer is a resorcinol-formaldehyde-latex (including teeth, rubber reinforcement.

[Claim 18]

Tire comprising a rubber reinforcement according to any one of claims 1, 6 and 15.