KR101251595B1 - A method for preparing single cord for reinforcing rubber - Google Patents

Abstract

The present invention relates to a method for manufacturing a single reinforcement for rubber reinforcement, and to a single reinforcing single rubber produced therefrom, by using a fiber for the cord in the longitudinal direction of the cord, by placing the weft fixing the inclination in the width direction fabric A method of manufacturing a single reinforcement for rubber reinforcement comprising the steps of weaving into a form, the step of heat treatment after the woven fabric is dipped into an adhesive solution, and the step of removing the weft yarn from the heat treated fabric, and the rubber produced therefrom It relates to a single cord for reinforcement.

The manufacturing method of the present invention can effectively produce a single rubber for reinforcement of a high performance that can be applied to an automated process system when manufacturing a cap ply or a body ply for a tire, thereby increasing economic efficiency.

Single Code, Rubber Reinforcement, Weaving Fabrics, Weft Removal

Description

Manufacturing method of single cord for rubber reinforcement {A METHOD FOR PREPARING SINGLE CORD FOR REINFORCING RUBBER}

The present invention relates to a method for producing a single cord for rubber reinforcement, and to a single cord for rubber reinforcement produced therefrom.

Polyamide fibers, polyester fibers, polyvinyl alcohol fibers and the like are widely used as rubber reinforcing fibers for various industrial reinforcing materials, particularly tires, belts and hoses, in view of their high strength and high elasticity and excellent dimensional stability. have.

In particular, in a tire, a cord made of such a reinforcing fiber serves to reinforce the rubber of the tire together with the steel, and forms a basic skeleton structure in the tire. In other words, compared to the human body is a bone-like role.

The performance required for the cord as a tire reinforcing material is fatigue resistance, shear strength, durability, resilience and adhesion to rubber, and the like, in particular, the main required physical properties may vary depending on the use of the fiber cord for each part of the tire. For example, a body ply (also known as a carcass) corresponding to a cord layer inside a tire should be load-bearing, shock-resistant, and resistant to flexing during driving. On the other hand, in the case of a cap ply (CAP PLY) corresponding to a special cord paper positioned on the belt of some passenger car radial tires, there is a characteristic that the movement of the belt should be minimized when driving.

Tire cords used at this time were manufactured in the form of fabric cords for a tire forming system and applied to tire forming through a rolling and cutting process. However, in the case of the fabric cord (Fabric Cord) has been used mainly for the reinforcing fibers in the prior art, there is a disadvantage that the density, spacing, etc. of the cord according to the required physical properties are difficult to change or adjust immediately in the application step. In addition, when using such a fabric cord, it is difficult to apply the latest automated process (molding machine) system has a disadvantage that it is difficult to raise labor costs and uniform tire molding.

In order to improve this, recently, in order to apply to an automated process (molding machine) system, instead of the fabric cord, every single single cord is rolled up on each stand and applied to the tire manufacturing process. .

However, the conventional single cord is manufactured by a system in which each cord is individually wound, so that the quantity that can be produced at one time is too small (100-200 cord), the production efficiency is significantly reduced, and even one cord is cut off during the heat treatment process. In this case, there is a problem in that the entire process cannot be performed again and the use of the product is not possible, thereby increasing the manufacturing cost.

Therefore, there is a need to develop a manufacturing process that can more efficiently produce a single code having various physical properties required for the rubber reinforcing cord, that is, fatigue resistance, shear strength, durability, resilience, and adhesion to rubber. .

The present invention is to provide a method for producing a single reinforcing rubber for rubber reinforcement having a superior process performance in the tire molding and the like, and a single reinforcing single rubber prepared from the same.

The present invention uses a fiber for the cord in the longitudinal direction of the cord, weaving the warp in the width direction by placing the weft for fixing the warp in the form of a fabric, the step of heat treatment after the woven fabric is dipped in an adhesive solution, and the It provides a method for producing a single reinforcing rubber cord comprising the step of removing the weft yarn from the heat treated fabric.

The present invention also provides a single cord for reinforcing rubber which is prepared according to the above method.

Hereinafter, a method for preparing a single reinforcing rubber and a single cord prepared therefrom according to a specific embodiment of the present invention will be described in detail. It will be apparent to those skilled in the art, however, that this is not intended to limit the scope of the invention, which is set forth as an example of the invention, and that various modifications may be made to the embodiments within the scope of the invention.

In addition, throughout this specification, "comprising" or "containing ", unless specifically stated, refers to including any and all components (or components) Can not be interpreted as excluding.

In the present invention, a filament bundle including a plurality of filament fibers is referred to as a 'multi filament', and a raw cord manufactured by upper and lower edges (or lower and upper edges) of the multifilament is referred to as 'ply twisted yarn', The deep cord treated with the adhesive for the cord in the twisted yarn is referred to as a 'single cord' or 'cord', and the fiber in the form of a multifilament or a twisted yarn for producing the cord is referred to as a 'fiber for the cord'.

As a result of the experiments of the inventors, after weaving in the form of a fabric with a weft yarn that can be fixed to the fiber for the cord using a warp, by performing a dipping process and heat treatment process and removing the weft yarn to manufacture a single reinforcing rubber cord, At the same time, it has been found that the single-code production in large quantities allows uniformity of the properties of the code and can reduce the variation between production lots. In particular, the production efficiency of the code can be greatly improved.

In accordance with one embodiment of the present invention, the present invention is provided a method for producing a single reinforcing rubber made of a process having a predetermined characteristic. In the method of manufacturing a single cord for reinforcing rubber, using a cord fiber in the longitudinal direction of the cord, weaving the warp in the width direction by placing the weft fixing the warp, weaving the woven fabric in an adhesive solution After the heat treatment, and it may be to include a step of removing the weft yarn from the heat treated fabric.

As described above, the present invention provides excellent performance as a rubber reinforcing cord by fixing the warp code using a weft yarn through the weaving process in the step before dipping and heat treating the fiber for the cord in the manufacturing method of a single reinforcing rubber for rubber. It can significantly improve process efficiency while maintaining.

In general, in the method of manufacturing a single code, each coil is individually dipped and heat-treated, and then a single coil is wound. However, when the processes are performed individually, the stability and efficiency of the process are reduced, and the damage of the code according to the individual processes is performed. And the performance deviation may be increased, which is not good.

However, in the manufacturing method of the present invention, by fixing the fibers for the cord in the form of a fabric, after performing the dipping and heat treatment step, by removing the warp cord fixing yarn in the final step, it is possible to improve the stability and efficiency of the entire manufacturing process In addition, it is possible to secure excellent performance in the uniformity of the cord by minimizing the deviation between the production lot of the cord.

At this time, the method of weaving the fiber for the cord in the form of a fabric is not particularly limited, while at the same time to minimize the damage to the final manufactured rubber reinforcement single cord and give excellent performance, in the subsequent dipping step and heat treatment step It can be carried out by adjusting the fiber selection and weaving conditions in terms of ensuring sufficient process stability and process efficiency.

As the fiber for the cord, synthetic fibers known for preparing a rubber reinforcing cord may be used without particular limitation, and are not particularly limited to any one kind. However, in terms of securing excellent performance as a single cord, the cord fibers are polyamide fibers, polyester fibers, polyolefin fibers, polyvinyl alcohol fibers, cellulose fibers, aramid fibers, glass fibers, steel fibers, carbon fibers, polyketone fibers It may include one or more selected from the group consisting of polyethylene fiber, polyacrylene fiber, polyphenylene sulfide fiber, polyphenylene benzobisazole fiber, and polytriethylene terephthalate fiber. In addition, examples of the cord fibers include nylon, polyethylene terephthalate, polyethylene naphthalate, lyocell, rayon, PVA, aramid, nylon and aramid hybrid fiber, polyethylene naphthalate and rayon hybrid fiber, carbon Fiber, and the like.

The fiber for the cord has a total filament number of 100 to 500, preferably 200 to 450, total fineness of 300 to 8,000 denier, preferably 500 to 4,000 denier, twist number of 100 to 600 TPM, preferably 200 to It may be 1 to 5 ply, preferably 2 to 3 ply twisted yarn, which is 500 TPM, but is not particularly limited thereto.

In addition, the fiber for the cord is used as a warp, and weaved weaving in the form of a fabric, with the role of fixing the warp to perform the subsequent dipping step and heat treatment step efficiently, after the heat treatment step To be able to be removed efficiently.

Such weft yarns include polyamide fibers, polyester fibers, polyolefin fibers, polyvinyl alcohol fibers, cellulose fibers, aramid fibers, polyketone fibers, polyethylene fibers, polyacryl fibers, polyphenylene sulfide fibers, polyphenylene benzobisazole It may include one or more selected from the group consisting of fibers, and polytriethylene terephthalate fibers. Examples of the weft fibers include nylon, polyethylene terephthalate, polyethylene naphthalate, vinylon, lyocell, rayon, cotton spun yarn, polypropylene, and the like. More preferred are polyethylene terephthalate, polypropylene, cotton spun yarn, rayon and the like in terms of improvement.

If the strength of the weft yarn is too high, difficulty in cutting the weft occurs in the step of removing the weft yarn for the manufacture of a single code, and if the strength is too low, the role of supporting the warp is insufficient, so that uniform heat treatment conditions are applied during the heat treatment process. As this is not done, it is difficult to obtain a single code of uniform physical properties. In addition, the hydrophilicity of the weft yarn is so strong that when the adhesive penetrates a lot, it is difficult to remove the weft after cutting the weft due to the adhesive phenomenon with the oblique cord due to the adhesion, it is difficult to manufacture a single code of uniform quality. In view of the strength and hydrophilicity of such a weft can be used a preferred example of the fibers as described above, the strength of the weft is preferably 10 g / d or less, the adhesive pick-up rate is 30% or less.

In addition, the weft yarn may have a total fineness of 50 to 1,000 denier, preferably 80 to 300 denier. If the fineness of the weft is too low, the strength is weak and insufficient to support the inclination, so it is difficult to manufacture a single cord of uniform physical properties.If the fineness is too high, weft is difficult to remove and the marks of the weft appear on the inclined cord surface when the weft is removed. This can lead to deterioration or adhesion of adhesive debris, which can lead to the generation of adhesive dust in the tire manufacturing process.

The present invention includes the step of using the fiber for the cord in the longitudinal direction, and weaving in the form of a fabric by arranging the weft for fixing the inclination in the width direction. At this time, the weaving fabric form includes 500 to 2,500, preferably 1,000 to 2,000, the number of warp to effectively fix the warp code, to achieve process efficiency and to minimize the damage to the code after weft removal in the final step can do. In addition, in order to improve productivity, the inclination density is included at 10 EPI or more, and the inclination density may be 35 EPI or less in order to secure uniform code physical properties and the efficiency of the weft cutting / removing process and to prevent the damage of the cord. At this time, it is preferable to apply a wide width of the woven fabric for higher single-code productivity.

Here, End Per Inch (EPI) indicates the number of warps per inch in the width direction, and the higher the value, the higher the warp density, and the lower the warp density, the lower the density. It is preferable that the EPI value of the slope density be applied in relation to the total fineness of the slope used, and when the total fineness is high, the density EPI of the applicable slope is low, and when the total fineness is low, High density EPI can be designed.

On the other hand, the number of weft pick (pick) can be weaved to be 15 pick / 10 cm or less or 0.5 to 15 pick / 10 cm, preferably 1 to 8 pick / 10 cm, more preferably 2 to 6 pick / 10 cm, In consideration of the type, total fineness and the number of inclined code, it is possible to apply by adjusting the number of weft (pick) to minimize the push and movement of the inclined code. The lower the number of inclinations and the number of weft peaks, the easier it is to cut the wefts in the manufacture of a single cord, and it is preferable to apply the productivity in consideration of the ease of the cut wefts.

The weft can be applied to the endless type of weft using a shuttle weaving machine, but considering the productivity of weaving, it is preferable to apply a loom type such as an air jet or a water jet. The finish may be in any form, such as a Turk-in form. When applying the turk-in type of weft end finishing method, it is preferable to the weft removal process to make the weft Turk-in length to 5 cm or less.

In the single-code manufacturing method of the present invention, the woven fabric including the fiber for the cord comprises a step of heat treatment after the dip in the adhesive solution.

At this time, the composition of the adhesive solution may be used a method used for a general tire cord, preferably a resorcinol-formaldehyde-latex (RFL) adhesive solution may be used. In addition, a dipping method is preferable for uniform adhesive coating, but spraying and other coating methods may be applied. Prior to the heat treatment step after the fabric is dipped, a drying step may be further performed for 30 seconds to 600 seconds while giving a tension of 30 to 3000 g / cord at a temperature of 100 to 200 ° C. When drying under tension under the above conditions in the above temperature range, it is possible to slow down the penetration rate of the adhesive due to the rapid drying of the adhesive solution, thereby minimizing the damage of the drying code, thereby obtaining favorable characteristics for strong expression.

In addition, after the fabric is dipped, the heat treatment step may be heat treated for 30 seconds to 600 seconds while giving a tension of 30 to 3000 g / cord at a temperature of 100 to 260 ℃, preferably 150 to 250 ℃. When the heat treatment while applying the tension in the above temperature range in the above conditions can be achieved to promote the reaction between the gradient cord and the adhesive and to improve the adhesion while reducing the damage to the cord.

In addition, the drying and heat treatment processes may be continuously or discontinuously repeated to improve adhesion and physical properties, and the heat treatment conditions may be variously applied according to the inclined material.

After the heat treatment of the fabric using the cord fibers inclined in this way, the weft can be removed from the fabric to produce a final single code. The weft removal step may be performed by applying all the methods known as fiber removal method, for example, from a variety of methods, such as pulling, cutting, blowing, friction, adhesion, suction, picking (picking), etc. It may be carried out by applying more than one method. More specifically, the method of removing the weft yarn is to remove and remove the weft by the edge, to blow the weft by blowing air, to pick it up with tongs, to remove it using a guide (Guide) and friction, roller (Roller) ) And a method of removing using an adhesive such as an adhesive tape, and a method of removing using an suction device. The weft removal method can be selected and applied as an optimal process in view of the improvement of the production speed of the entire process, prevention of damage to the cord, and the effect of weft removal.

In addition, the weft removal step may further include the step of cutting the weft between the warp using a knife, hot wire, scissors or the like. At this time, the position of cutting the weft can be performed in a variety of ways to remove the weft without cutting the weft in a method of cutting the weft between all the inclination, weft cutting for the weft removal rate and inclination damage prevention It is preferable to cut the number so that the number becomes 1 to 1 time / incline 1 part in the center part, and cutting the weft thread to 1 time / 30 time to 1 time / 1 time is more effective in terms of improving process efficiency and minimizing cord damage. desirable.

In particular, the weft removal step in the single-code manufacturing method of the present invention is intended to remove the weft yarn from the cord fabric so that it can be used in the same manner as the existing single code in the molding of the tire, so that the weft from the inclined cord forcibly detached It is preferable that the final manufactured code is not damaged. In this respect, removal using a suction device is most preferred.

After removing the weft yarn by the above-described method, it is possible to produce a single cord for reinforcing rubber by winding it with a single cord.

On the other hand, the present invention provides a single cord for reinforcing rubber prepared according to this method. The single reinforcing cord for rubber reinforcement may be at least 95% strength, 90% or more retention rate, 90% or more retention rate of the adhesive pickup, the production efficiency may be more than 50% compared to the existing single code.

Rubber reinforcing single code of the present invention prepared according to the method comprises a fiber for the cord and the adhesive attached to the fiber, the pick-up rate of the adhesive may be 8% by weight or less, preferably the pickup rate of the adhesive is 5 To 8% by weight. The single cord thus prepared is improved in adhesive strength and fatigue properties, thereby improving physical properties such as elongation.

Since the single cord is manufactured through a process such as weaving into a woven fabric and dipping and removing the weft as described above, a shape having a predetermined interval corresponding to the removed weft, for example, a band shape, a wavy pattern The shape and the like may appear on the appearance of the single code.

This single cord comprises a fiber for the cord, and an adhesive applied on the fiber for the cord, wherein the amount of the adhesive applied is 95% by weight or less, or 5 to 95% by weight, smaller than other areas, on the fiber for the cord, and the like. It may be formed at intervals. Here, the area of the adhesive-coated amount is small may be formed in a strip shape perpendicular to the fiber for the cord, this strip shape is a width corresponding to the thickness of the weft yarn used in the manufacture of a single code, for example, total fineness of 50 to 1,000 It may have a width corresponding to the thickness of the denier yarn. In particular, the area of the adhesive-coated amount may have a width of about 10 mm or less or 0.001 to 10 mm.

In addition, the single reinforcement for rubber reinforcement of the present invention is excellent in shape stability and elongation, can be applied to the body ply or cap fly of pneumatic tires, rubber reinforcement applied to general rubber molded products such as rubber belts, conveyor belts It may also be used for such purposes. In particular, the tire to which the rubber-reinforced single cord of the present invention is applied is excellent in uniformity, thereby ensuring stable driving performance and exhibiting excellent handling properties.

Single reinforcing rubber prepared according to the present invention is suitable for application to the automatic tire molding process by being able to produce a product efficiency and uniformity, it is possible to manufacture a uniform tire effectively reduce the tire failure rate.

In the present invention, matters other than those described above can be added or subtracted as required, and therefore, the present invention is not particularly limited thereto.

In the manufacturing method of the present invention, by weaving the fiber for the cord in the form of a fabric, by performing the dipping process and heat treatment process, it is possible to produce tire cords of uniform physical properties, can be applied to an automated process system when forming a tire excellent tire uni Since the manufacturing process efficiency of the single reinforcement for rubber reinforcement capable of producing uniformity can be significantly improved, there is an effect of increasing economic efficiency.

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the scope of the present invention is not limited to the following examples.

Example  Nylon 66 single Cord  Produce

A nylon 66 polymer having a relative viscosity of 3.3 was melt spun at a spinning speed of 600 m / min and cooled to prepare a non-drawn yarn, and a stretched yarn was prepared by stretching, heat setting, and winding this undrawn yarn at a draw ratio of 5.5.

The total fineness prepared as described above was twisted and twisted two strands of Z-bonded yarn with 310 TPM of stretched yarn of 840 denier with S-yeon of the same twist number.

1,120 pieces of the twisted yarns are aligned and used as the inclination in the longitudinal direction, the inclination density is 20 EPI, the woven fabric width is 56 inches, and the weaving of the cotton yarn with the number of 20 weaving yarns is 4 pick / 10 cm. The tire cord was prepared by immersing and passing through the RFL adhesive solution, followed by drying and heat treatment.

The composition, drying and heat treatment conditions of the RFL adhesive solution were the same as the treatment conditions of conventional nylon 66 cord.

After the heat treatment process, by cutting the weft yarns between all the inclinations using a knife in the fabric (one time / one inclination) by removing the weft yarns using an air suction device, and wound in the branch pipe to produce a single reinforcing rubber cord It was.

Example  2. PET  single Cord  Produce

A PET polymer having an intrinsic viscosity of 1.05 was used, except that the spinning polymer was melt-spun and cooled according to a conventional method except for the conditions of a spinning speed of 4000 m / min and a draw ratio of 1.46 to prepare a non-drawn yarn. Heat-fixed and wound to prepare a drawn yarn.

The total fineness prepared as described above was twisted and twisted two strands of yarn Z-bonded with 430 TPM of drawn yarn of 1,000 denier, S-yeon of the same twist.

Weaving 1,288 pieces of the twisted yarn is used as the inclination in the longitudinal direction, the inclination density is 23 EPI, weaving in the form of a fabric with a weft yarn covered with cotton yarn in a high-strength PET 150 denier to 4 pick (/ 10 cm), Tire cords were prepared by immersing and passing through RFL adhesive solution under the same conditions as conventional polyester cords, followed by drying and heat treatment.

After the heat treatment step, the same method as in Example 1 was applied to prepare a single reinforcing rubber cord.

Example  3. Aramid ( Aramid ) single Cord  Produce

Kevlar (Dupont) total fineness of p-Aramid is the same method as Example 1 except that 1,500 deniers of twisted yarn are twisted and twisted with 2 strands of Z-bonded yarn at 300 TPM with S twist of the same twist. A single cord for rubber reinforcement was prepared.

Example  4. Lyocell  single Cord  Produce

In the same manner as in Example 1, except that Condenka's long-fiber rayon material was spun and twisted two strands of Z-bonded yarn with 400 TPM of 1,650 denier drawn yarn with a total fineness of 400 TPM. A single cord for rubber reinforcement was prepared.

Example  5 ~ 11. PET  single Cord  Produce

As shown in Table 1, the same method as in Example 2 except that the conditions such as the total fineness of the warp, the type and total fineness of the weft fiber, the warp density (EPI), the weft peak number, the weft cut number, etc. A single cord for rubber reinforcement was prepared.

division Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 Example 11 slope Type of fiber PET PET PET PET PET PET PET Total fineness
(Denier) 1,000 1,000 1,000 1,000 1,000 1,000 1,500 Weft Type of fiber High Elongation PET / Cotton Yarn Covering High Elongation PET / Cotton Yarn Covering High Elongation PET / Cotton Yarn Covering High Elongation PET / Cotton Yarn Covering High Elongation PET / Cotton Yarn Covering High Elongation PET / Cotton Yarn Covering High-speed N66 Total fineness
(Denier) 150 150 150 150 150 150 180 Weaving Slope density
(EPI) 25 30 23 23 23 23 23 Weft peak number
(pick / 10cm) 4 4 6 2 4 4 4 Total slope 1288 1288 1288 1288 1288 1288 1500 Weft
remove Weft
Cutting water Once / 3 copy Once / 1 copy Once / 1 copy Once / 1 copy 1 time / 6 copies Once / 10 book Once / 1 copy

Comparative example  1. Single Cord  Individual manufacturing

Manufactured stretched yarn and twisted yarn in the same manner as in Example 2, and the 100 twisted yarn is connected to each krill to use a slope in the longitudinal direction, each cord is applied to the RFL adhesive solution without applying a separate weft After immersing, passing through, and drying and heat-treating to prepare a single reinforcement for rubber reinforcement by winding each one of the individual cords individually.

The physical properties of the rubber reinforcing single cords prepared according to Examples 1 to 11 and Comparative Example 1 were measured by the following method.

1) Cutting strength and cutting elongation measurement

Using the Instron Engineering Corp (Instron Engineering Corp, Canton, Mass) for each single code, the breaking strength of the cord measured at 250 mm and tensile speed of 300 m / min was measured using an Instron Engineering Corp. (Canton, Mass). The elongation at break was calculated as the ratio of the length of the cord to its original length until the cord broke.

[Equation 1]

% Cutting strength retention = (strong after weft cutting / strong before weft cutting) × 100

[Equation 2]

% Cut Elongation Retention = (Elongation after weft cutting / Elongation before weft cutting) × 100

2) Adhesive Pickup Rate Measurement

To determine the adhesive pick-up rate for each cord, weigh 3 g of each sample after drying according to the test method of ASTM D885, in 250 mL of 90% formic acid solution for nylon, and 150 mL for rayon and aramid. The sulfuric acid solution was dissolved in 100 mL of potassium hydroxide solution in the case of polyester and heated to 30 ° C. Thereafter, the residue was filtered, washed, dried and weighed to calculate a pickup ratio of the adhesive as shown in Equation 3 below.

[Equation 3]

% Pickup of Adhesive = [Dry Weight of Residue / (Dry Weight of Sample-Dry Weight of Residue)] × 100

 [Equation 4]

% Retention of adhesive pick-up rate = (glue pick-up rate after weft cutting / adhesive pick-up rate before weft cutting) × 100

3) coefficient of variation (C.V.)

)산술 평균(

)으로 나눈 값이며, 숫자가 클수록 상대적인 차이가 크다는 것을 의미한다. The coefficient of variation for the strength of each single code was calculated as shown in calculation 3 below. At this time, the coefficient of variation is the standard deviation (

Arithmetic mean (

Divided by), and the larger the number, the greater the relative difference.

[Equation 5]

는 싱글 코오드 강력의 표준편차를 나타내며,

는 싱글 코오드 강력의 산술 평균을 나타낸다. Where CV is the coefficient of variation of strength,

Denotes the standard deviation of the single-code strength,

Denotes the arithmetic mean of the single-code strength.

The physical property measurement results of the single cord for reinforcing the rubber of Examples 1 to 11 and Comparative Example 1 measured in the above manner, and the production amount of the single code per unit time (1h) in the manufacturing process are summarized in Table 2 below.

division Example Comparative example One 2 3 4 5 6 7 8 9 10 11 One Strength maintenance
(%) 100 99 95 96 99 99 100 97 99 99 98 100 Body maintenance rate
(%) 95 100 100 100 100 100 100 95 95 95 100 98 Adhesive Pick-up Rate
Retention rate (%) 100 99 95 98 98 95 92 99 99 95 98 95 Production per Unit Production Recovery
(cord / time) 1120 1288 1120 1120 1400 1680 1288 1288 1288 1288 1288 100 Strong C.V. 0.03 0.01 0.03 0.04 0.01 0.02 0.01 0.02 0.02 0.02 0.02 0.05 Cord surface Good Good Good Good Good Good usually Good Good usually Good Good

As shown in Table 2, the single cord manufactured according to Examples 1 to 11 of the present invention is a unit production while the damage of the cord produced by weaving a fiber for the cord in the form of a fabric after performing a dipping and heat treatment process less Production per recovery was 1,000 to 2,000 cord / time, greatly improving process efficiency. In addition, the strong retention rate and the adhesive pickup rate retention rate are good, and in particular, there is no weft mark on the surface of the cord, and there is no adhesive gel, so the quality is good. In addition, it can be seen that the strong C.V. values of Examples 1 to 11 are not large, 0.01 to 0.03, and thus the uniformity of single-code physical properties is high.

On the other hand, the single cord of Comparative Example 1 wound up by individual dipping and heat treatment of the respective cords according to the conventional method has similar physical properties such as strong retention and adhesive pickup ratio, but the yield per unit production recovery is significantly 100 cords / circuit. You can see it falling. In addition, it can be seen that the uniformity of the physical properties is low due to the high C.V. value.

Claims (9)

Using a fiber for the cord in the longitudinal direction of the cord, weaving in the form of a fabric by placing the weft for fixing the warp in the width direction, Heat treating the woven fabric after dipping into an adhesive solution, and Removing the weft yarn from the heat treated fabric To include, in the weaving step, the form of the fabric includes a number of inclination 500 to 2,500, the weft pick (pick) is formed to be 1 to 8 pick / 10cm, strength retention rate of 95% or more, cutting retention rate of 90% or more Method for producing a single reinforcing cord for rubber reinforcement, adhesive pickup retention rate of 90% or more. The method of claim 1, The fiber for the cord is polyamide fiber, polyester fiber, polyolefin fiber, polyvinyl alcohol fiber, cellulose fiber, aramid fiber, glass fiber, steel fiber, carbon fiber, polyketone fiber, polyethylene fiber, polyacryl fiber, polyphenyl A method for producing a rubber reinforcing single cord, which is at least one member selected from the group consisting of rensulfide fibers, polyphenylene benzobisazole fibers, and polytriethylene terephthalate fibers. The method of claim 1, The weft yarn is polyamide fiber, polyester fiber, polyolefin fiber, polyvinyl alcohol fiber, cellulose fiber, aramid fiber, polyketone fiber, polyethylene fiber, polyacryl fiber, polyphenylene sulfide fiber, polyphenylene benzobisazole fiber And, and polytriethylene terephthalate fibers, at least one member selected from the group consisting of rubber reinforcing method for producing a single cord. The method of claim 1, The weft yarn manufacturing method of a single cord for reinforcing rubber having a total fineness of 50 to 1,000 denier. The method of claim 1, Fabric weaving in the weaving step comprises a number of inclination of 1,000 to 2,000, the method of producing a single reinforcement for rubber reinforcement is formed so that the number of weft pick (pick) is 2 to 6 pick / 10 cm or less. The method of claim 1, The weft removing step is a method of producing a single reinforcing rubber for reinforcing is performed by one or more methods selected from the group consisting of a pulling method, cutting method, blowing method, friction method, adhesion method, suction method, and picking method. It is manufactured by the method according to any one of claims 1 to 6, the rubber reinforcement single cord having a strength retention rate of 95% or more, a cutting ratio 90% or more, adhesive pickup retention rate 90% or more. delete The method of claim 1, In the weaving step, the inclination density is 10 EPI or more to 35 EPI or less manufacturing method of a single reinforcing rubber.