KR20110016661A - Multilayer elastomer components having electric and elastic properties and method for manufacturing the same - Google Patents

Abstract

PURPOSE: A multilayer elastomer components having electric and elastic properties and a method for manufacturing the same are provided to reduce electric resistance and have high capacitance and excellent electromagnetic absorption performance. CONSTITUTION: A multilayer elastomer components having electric and elastic properties comprises: a tube-shaped elastic rubber(120); an elastic rubber coating layer enclosing an external plane of a core and having first electric performance; and an elastic rubber coating layer having second electric performance different from the first electric performance. According, the multilayer elastomer components have single or complex electric performance.

Description

Multilayer Elastomer Components having electric and elastic properties and Method for manufacturing the same

The present invention relates to an elastic rubber component of a laminated structure, and more particularly to an elastic rubber component of a laminated structure having a variety of electrical performance while having good flexibility, elasticity and elastic restoring force.

In addition, the present invention relates to an elastic rubber component of a laminated structure that is easy to mount to an object having a variety of opposite structures and is economically easy to manufacture.

The present invention also relates to an elastic rubber component having a laminated structure in which the elastic rubber coating layer to be laminated has a thin and uniform thickness.

Moreover, the present invention relates to a method for producing the above elastic rubber component.

With the recent development of the electronic industry, the size of electronic components is limited, mechanical coupling is easy, and various electrical performances are required.

The prior art is a cylindrical ferrite core. These ferrite cores are manufactured through a firing process after magnetic powder is put into a mold and pressed. A signal wire or a cable is inserted into the holes of the ferrite cores to remove electromagnetic noise generated from the signal lines through the ferrite cores.

However, the ferrite core has a disadvantage of being heavy, inflexible and inflexible and fragile and requiring a corresponding mold for each dimension. In addition, there is a disadvantage in that the signal line must be inserted into the hole of the ferrite core first, followed by injection. In addition, the outer diameter of the hole of the ferrite core and the signal line is difficult to match exactly, there is a disadvantage that a separate plastic case is required to fix the ferrite core and the signal line. In addition, the ferrite core is pressed powder powder has a single layer structure using a single material has a disadvantage that the boundary effect (Boundry Effect) is small, it is difficult to have sufficient electrical performance.

Another conventional technique is a zebra connector manufactured by Fuji Polymer of Japan, which is an anisotropic conductive connector. Conventional zebra connectors are electrically conductive elastic rubber sheets having a constant dimension, for example, width × height × length of 150 mm × 0.03 mm × 150 mm, and constant dimensions, for example, width × height × length of 150 mm × 0.07 mm × 150 mm insulated elastic rubber sheets are successively crossed and laminated, and then bonded to each other to form a rectangular, electrically conductive laminated sheet having a predetermined dimension, for example, a width × height × length of 150 mm × 2 mm × 150 mm. After the preparation, it is produced by cutting the required dimension, for example, the width × length × height into 3 mm × 2 mm × 4 mm.

As described above, the zebra connector manufactured by successively stacking the electrically conductive elastic rubber and the insulating elastic rubber on the sheet has a sheet-like structure having a flat width, height, and length, so that it is rolled on a roll. It is difficult to manufacture continuously and has a high manufacturing cost. Moreover, the zebra connector on the sheet has a disadvantage in that it is difficult to manufacture the shape into various shapes such as a tube shape. In addition, various electrical properties, for example, electrically conductive elastic rubber and insulating elastic rubber has a disadvantage in that it is difficult to have additional performance, such as electromagnetic wave absorbing products continuously stacked.

According to another conventional process for producing electric wires, it is possible to form a coating of elastic rubber continuously by extrusion on a core on a roll like a cable. Alternatively, the double extrusion method can form a continuous elastic coating on the cable, that is, the core simultaneously.

According to this technique, however, the elastic rubber coating is formed by hardening after rubber on the gum is coated on the core by extrusion, and it is difficult to form a thin and uniform thickness of the coating between the core and the coating. . In addition, there is a disadvantage that it is difficult in the manufacturing process to form a multi-layer coating. Moreover, the viscosity of the elastic rubber having electrical performance is very high, difficult to extrude, it is difficult to precisely manufacture.

Another conventional technique is an elastic rubber component having electrical properties on the outside of the core while the inside is an insulating rubber. However, when the material having electrical performance is exposed to the outside, there is a disadvantage that the reliability of the material having electrical performance may be degraded due to the change in external environment. In particular, the material having the electrical performance is formed only on the outside, there is a disadvantage that it does not have sufficient electrical capacity and difficult to manufacture continuously. In addition, there is a disadvantage that does not have a variety of electrical performance.

Accordingly, the present invention has been proposed to solve such a problem, and an object of the present invention is to provide an elastic rubber component having a laminated structure having good electrical performance in flexibility, elasticity, and elastic restoring force in mechanical performance.

Another object of the present invention is to provide an elastic rubber component having a laminated structure having low electrical resistance, high electric capacity, and good electromagnetic wave absorption performance in electrical performance.

Another object of the present invention is to provide an elastic rubber component having a laminated structure having electrical performance in which mechanical performance and electrical performance can be easily adjusted.

It is still another object of the present invention to provide an elastic rubber component having a laminated structure having easy electrical performance and low cost.

Still another object of the present invention is to provide an elastic rubber component having a laminated structure having electrical performance that is easy to have various structures.

It is still another object of the present invention to provide an elastic rubber component having a laminated structure having electrical performance that is easily in electrical contact with an opposing object.

Still another object of the present invention is to provide an elastic rubber component having a laminated structure having electrical performance that is easy to be mounted on an object having various structures and has strong adhesion.

It is also an object of the present invention to provide an elastic rubber component having a laminated structure having a reliable electrical performance against external environmental changes.

The above object is a tube-shaped core; An elastic rubber coating layer covering the outer circumferential surface of the core and having a first electrical performance bonded thereto; And an elastic rubber coating layer having a second electrical performance different from the first electrical performance bonded to the elastic rubber coating layer having the first electrical performance and bonded to the elastic rubber coating layer, wherein the core has elasticity having the first and second electrical performances. It is achieved by an elastic rubber component of a laminated structure having electrical performance with single or composite electrical performance by a rubber coating layer.

In addition, the above object is a sheet-shaped core; An elastic rubber coating layer having a first electrical performance laminated and bonded to the front and back surfaces of the core; And an elastic rubber coating layer having a second electrical performance different from the first electrical performance laminated and bonded onto the elastic rubber coating layer having the first electrical performance, and having the core and the first and second electrical performances. It is achieved by an elastic rubber component of a laminated structure having electrical performance with single or composite electrical performance by the elastic rubber coating layer.

Preferably, the core may be either elastic rubber or elastic polymer.

In addition, the material and the thickness of the elastic rubber coating layer having the first electrical performance is the same, and the material and the thickness of the elastic rubber coating layer having the second electrical performance is the same.

In addition, the first and second electrical performance may be any one of electrical insulation, electrical conductivity, electrical piezoelectricity, and electromagnetic wave absorption.

Preferably, the elastic rubber coating layer having the first and second electrical performance may be repeated in pairs. However, the present invention is not limited thereto, and an elastic rubber coating layer having a different electrical performance from the first and second electrical performances may be formed on the elastic rubber layers having the first and second electrical performances in pairs.

Preferably, the elastic rubber coating layer may be a silicone rubber formed by curing the liquid silicone rubber having an adhesive force.

Preferably, the elastic rubber coating layer having the first and second electrical performance is formed by curing after mixing at least one of an electrically conductive powder, an electromagnetic wave absorbing powder, or an electric piezoelectric powder to the liquid silicone rubber.

In addition, preferably, the elastic rubber component of the laminated structure may be provided with any one of electrical performance, electrical piezoelectricity, or electromagnetic wave absorbency, or a combination of these performances.

Preferably, the laminated rubber component may be used for any one of a tube, a connector, a sheet, an electrical contact terminal or a gasket.

Preferably, a protective layer may be formed on the outermost layer of the elastic rubber component to improve mechanical performance.

Preferably, at least one surface of the elastic rubber component may be formed of a metal foil to enable soldering.

The above object is to continuously supply a core; Dipping the core into a liquid silicone rubber having a first electrical performance and then coating and curing the core to form an elastic rubber coating layer having a first electrical performance; The core, on which the elastic rubber coating layer having the first electrical performance is formed, is dipped into a liquid silicone rubber having a second electrical performance different from the first electrical performance, coated, and cured to form an elastic rubber coating layer having the second electrical performance. Forming; And cutting the core in which the elastic rubber coating layer having the second electrical performance is formed according to the use thereof.

Preferably, the core may be coated while rising vertically from the bottom to the liquid silicone rubber.

According to the above structure, it is easy to provide elastic rubber parts of various shapes by the core of various shapes, and it is easy to apply to the object of various structures.

In addition, the elastic rubber coating layer of various structures, thicknesses and materials have elasticity and flexibility, and are easy to have various mechanical and electrical performances.

In addition, it is easy to control the electrical and mechanical performance by changing the structure, thickness and material of the elastic rubber coating layer.

In addition, the laminated elastic rubber coating layer is formed by bonding the elastic rubber of the liquid by curing is easy to manufacture and low price.

In addition, most of the elastic rubber coating layer having electrical performance is formed in the laminated interior to have a reliable electrical performance against environmental changes outside.

In addition, the elastic rubber coating layer does not melt again by heat and maintains reliable performance once cured.

In addition, it is possible to manufacture economically because it is manufactured by a continuous process and manufactured by thermal curing.

In addition, since the coating from the bottom to the top direction can be produced uniformly and thinly the thickness of the elastic coating layer by gravity.

In addition, by varying the shape of the hole of the core, for example, it is possible to form an unevenness to improve the adhesive force and the object inserted into the hole.

In addition, when a hole is formed in the core, an elastic rubber component having a laminated structure having electrical performance forming a closed loop may be manufactured.

In addition, since the elastic rubber coating layer can be easily formed many times, the electrical properties may be improved by the boundary effect. In other words, when the elastic rubber coating layer having electrical performance is coated several times to have a constant thickness, electrical properties are improved than a single layer product.

In addition, by selecting and using the core and the elastic rubber coating layer having a variety of hardness and structure, it is possible to provide an elastic rubber component for various uses.

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

1 is a perspective view showing an elastic rubber component 100 of a laminated structure according to an embodiment of the present invention. In this embodiment, in order to clearly describe the features of the present invention, an elastic rubber component having a laminated structure of four layers is sequentially shown on the outer surface of the core, but is not limited thereto.

Core 110

The core 110 may be an elastic rubber tube having electrical performance in the shape of a tube, but in this embodiment, an insulating rubber tube is used. Here, the electrical performance may be, for example, any one of electrical conductivity, electrical insulation, electrical piezoelectricity, or electromagnetic wave absorption, but in the present embodiment, preferably electrical insulation.

Here, the core 110 is an insulated silicone rubber tube which is continuously fed onto a reel and is preferably continuously produced by extrusion. However, in some cases, a copper wire or the like may be inserted into the core 110.

In addition, the electrical performance of the core 110 has a different electrical performance than the elastic rubber coating layer 120 laminated on the outer peripheral surface.

Preferably, an uneven portion is formed inside the hole of the tube-shaped core 110 to have a structure capable of fixing a wire or a cable inserted into the hole.

Preferably, the hardness of the core 110 is lower than the elastic rubber coating layer 120 laminated on the outer circumferential surface.

Elastic rubber coating layer (120, 130, 140, 150)

The elastic rubber coating layers 120, 130, 140, and 150 have different electrical performances, and are formed by sequentially laminating and coating the outer peripheral surface of the core 110 through, for example, a dipping process. Preferably, at least two layers are laminated.

However, the present invention is not limited thereto, and the elastic rubber coating layers 120 and 140 may have the same electrical performance as the elastic rubber coating layers 130 and 150.

Preferably, the elastic rubber coating layer (120, 130, 140, 150) is formed by curing after coating by dipping to a liquid silicone rubber having an electrical performance mixed with powder having electrical performance in a liquid insulating silicone rubber .

Preferably, the electrical performance is any one of electrical conductivity, electromagnetic wave absorption performance, electrical piezoelectric performance, or electrical insulation.

Here, the elastic rubber coating layer (120, 130, 140, 150) may be to repeat the different electrical performance in sequence. In other words, the elastic rubber coating layer 120 has a first electrical performance, the elastic rubber coating layer 130 has a second electrical performance, the elastic rubber coating layer 140 has a first electrical performance, and the elastic rubber coating layer 150 has a second electrical performance. It can be formed to have a performance. For example, if the first electrical performance is electrically conductive and the second electrical performance is electrically insulating, the elastic rubber coating layer 120 is electrically isolated by the elastic rubber coating layer 130.

Preferably, the thickness and material of each elastic rubber coating layer (120, 130, 140, 150) is the same. However, each of the elastic rubber coating layer (120, 130, 140, 150) may vary in thickness depending on the coating speed and the viscosity of the coating material and may be repeated several times to increase the thickness.

Here, in the case where the elastic rubber coating layers having the same electrical performance are laminated in succession, for example, when the magnetic rubber having electromagnetic wave absorbing performance is continuously stacked, it becomes a single layer due to the boundary effect and is more electromagnetic waves than the magnetic rubber having the same thickness. Absorption performance is good.

In addition, the elastic rubber coating layer having electrical performance is different in electrical performance depending on the thickness of the elastic rubber coating layer.

Preferably, at least the side cross-section of each elastic rubber coating layer (120, 130, 140, 150) is exposed to the outside. For example, when the electrically conductive elastic rubber coating layer and the insulating elastic rubber coating layer are successively stacked alternately, the elastic rubber contact terminals may be applied to electrically connect the objects in contact with both end surfaces thereof.

On the other hand, the outer surface of the outermost elastic rubber coating layer 150 laminated on the protective layer may be laminated to make the appearance looks beautiful or the coefficient of friction is small. Preferably, the protective layer may be any one of a polymer film or a fiber.

In addition, the metal foil may be bonded to at least a portion of the elastic rubber coating layers 120, 130, 140, and 140 exposed to the outside, and according to this structure, soldering may be performed by the metal foil.

The elastic rubber component having such a laminated structure may have any one of electric lines, electromagnetic wave absorption, or electric piezoelectric performance, or a combination thereof according to the electrical performance of the laminated elastic rubber coating layer.

In addition, the laminated elastic rubber component manufactured as described above may have various electrical performance and mechanical uses by forming a closed loop of a tube shape by the shape of the tube-shaped core 110.

Figure 1a shows an example in which the elastic rubber component 100 of the laminated structure according to Figure 1 is used.

Here, the elastic rubber core 110 is silicone rubber, and the elastic rubber coating layers 120, 130, 140, and 150 are silicone rubbers having electrical conductivity, electrical insulation, electrical conductivity, and electrical insulation, respectively. Therefore, the circuit of the printed circuit board 50 installed on the upper portion of the elastic rubber component 100 having the laminated structure is one of the circuits of the object 60 opposed by the elastic rubber coating layers 120, 130, 140, and 150. 1 (Pin to Pin) makes elastic electrical contact.

Preferably, the volume electrical resistance of the electrically conductive elastic rubber coating layers 120 and 140 is 2 ohm or less.

The electrically conductive elastic rubber coating layers 120 and 140 are prepared by mixing electrically conductive powders such as silver, nickel, carbon, gold, or copper with liquid silicone rubber.

In this case, the content of the powder is 60% to 85% by weight.

Here, if the elastic rubber coating layer (130, 150) is electrically insulating and has a radio wave absorption, the electricity transmitted from the printed circuit board 50 to the object 60 is noisy by the elastic rubber coating layer (120, 140) ) Is attenuated.

For reference, the elastic rubber coating layer having electrical insulation and electromagnetic wave absorption may be prepared by mixing oxidized Mn-Zn-based powder with liquid silicone rubber. In this case, the content of the powder is 50% to 85% by weight.

2 is a perspective view showing an elastic rubber component 200 of a laminated structure according to another embodiment of the present invention, Figure 3 shows an actual use state.

According to this embodiment, the hole 212 formed in the tube-shaped core 210 may have a bend, such as irregularities so that it can be fixed to the cable inserted therein. In addition, as shown in FIG. 3, in the cable 10 to be fitted into the hole 212 of the core 210, a gap 214 is formed in the elastic rubber component 200 for convenience of work. Open cable 214 to fit cable 10.

That is, even when both ends of the cable are fixed by a connector or the like, the elastic rubber component 200 can be attached to the cable.

4 is a perspective view illustrating an elastic rubber component 300 having a laminated structure according to another embodiment of the present invention.

Compared to the exemplary embodiment of FIG. 1, the sheet-shaped core 310 is applied instead of the tubular core, and the elastic rubber coating layers 320, 330, 340, and 350 are sequentially applied to the front and rear surfaces of the core 310. Are stacked.

Preferably, the core 310 is elastic rubber, the hardness is lower than the adjacent elastic rubber coating layer 320 is laminated.

Preferably, the material and thickness of each elastic rubber coating layer (320, 330, 340, 350) is constant.

However, the present invention is not limited thereto, and the core 310 may be a flat cable having a covering of insulating elastic rubber. In this case, the flat cable improves electromagnetic shielding, electromagnetic wave absorption, and elasticity by the elastic rubber coating layers 320, 330, 340, and 350 having electrical performance.

The elastic rubber component 300 having such a laminated structure can be applied not only to a component having various electrical performances as in the above-described embodiment, but also to the elastic electrical contact terminal by providing a structure such as a zebra connector, which is an anisotropic conductive connector. Can be applied.

On the other hand, in order for the elastic rubber component 300 to be used as a zebra connector which is an anisotropic conductive connector, both ends of the edge of the elastic rubber component 300 on a roll, for example, P1 and P2 positions of FIG. 320, 330, 340, 350 should be separated from each other electrically and mechanically around the core (310).

In practice, when the elastic rubber component 300 is manufactured in a wide width and cut to the required length in a state in which both ends are cut as shown in FIG. In this case, the elastic rubber coating layer (320, 330, 340, 350) is laminated on both sides with respect to the core 310 has a structure symmetric with each other.

According to this manufacturing method, since it works with a roll, it is more workable than the method for manufacturing the zebra connector on the conventional sheet manufactured by alternately laminating the conductive elastic rubber and the insulating elastic rubber on the ordinary sheet, and the elastic rubber coating layer is thinner. There is an advantage that can be manufactured to have a uniform thickness.

Hereinafter, the manufacturing method of the elastic rubber parts 100, 200, and 300 of the laminated structure which have the above-mentioned structure is demonstrated. 5 is a flowchart illustrating a manufacturing method according to the present invention.

First, a tube or sheet-like core is continuously manufactured by passing through a die having a constant shape such as extrusion or calendar.

Subsequently, the core prepared in the state of the roll 11 passes through the coating apparatus 20 by dipping and forms a liquid silicone rubber having electrical performance in which a powder having a first electrical performance (for example, electromagnetic wave absorption performance) is mixed thereon. When the coating is continuously performed and then thermally cured in the curing apparatus 30, the liquid silicone rubber becomes a solid silicone rubber layer having a first electrical performance while being bonded onto the core after curing.

Preferably, the viscosity of the liquid silicone rubber having electrical performance may be 1,000 to 3,000 CPS, but is not limited thereto.

Preferably, the thermal curing conditions may be at about 200 ° C. for about 2 minutes, but are not limited thereto.

Here, the liquid silicone rubber is a thermosetting silicone rubber adhesive capable of elastically bonding to the opposite object while curing by heat.

Preferably, when the core is dipped, i.e. impregnated, coated and thermally cured into a liquid silicone rubber while rising vertically from the bottom up, the liquid silicone rubber is thinly coated with a uniform thickness over the core by gravity. However, the present invention is not limited thereto and may be coated while rising from the bottom at a predetermined angle according to the shape or type of the core.

Usually, the coating thickness in one coating depends on the viscosity of the elastic rubber in the liquid, but is between about 0.01 mm and 0.2 mm. In this case, the coating layer may be repeatedly coated several times in order to thicken the coating layer in order to have sufficient electrical performance.

Subsequently, the curing apparatus (coating the liquid silicone rubber or insulating liquid silicone rubber mixed with the powder having the second electrical performance (for example, electrical conductivity) on the silicone rubber having the first electrical performance continuously in the coating apparatus 21. 31), the liquid silicone rubber becomes a solid silicone rubber layer having a second electrical performance while being bonded onto the silicone rubber having a first electrical performance after curing.

Preferably, when the core is impregnated and thermally cured to a liquid silicone rubber having a second electrical performance while rising vertically from bottom to bottom in the same manner as above, the liquid silicone rubber has a first electrical performance by gravity. It has a uniform thickness and a thin coating on the silicone rubber layer.

As described above, until the core rises vertically from the bottom to the top, the liquid silicone rubber having different electrical performances has a uniform thickness and is thinly coated, so that the desired thickness is achieved. Coating is repeated and thermally cured continuously until it has.

In this way, a plurality of coatings (coating devices 20, 21, 22) and thermal curing (curing devices 30, 31, 32) are successively applied to cores continuously supplied in a roll state, and thus, an elastic rubber component having electrical performance is applied to a roll ( 18) produced continuously into phases.

However, the present invention is not limited thereto, and for convenience of the manufacturing process, several coating and curing processes may be performed at intervals of time or through replacement of manufacturing equipment.

Then, the elastic rubber component having electrical performance on a roll is cut to a certain length through a blade or dicing saw (Dicing Saw) according to the use to produce an elastic rubber component having the electrical performance of the present invention.

Preferably, the length is between 3 mm and 100 mm when used as a tube with electrical performance and between 0.3 mm and 5 mm when used as a connector.

In the above description, the embodiment of the present invention has been described, but various changes or modifications can be made at the level of those skilled in the art. Such changes and modifications may be said to belong to the present invention without departing from the scope of the present invention, and therefore, the scope of the present invention should be judged by the claims described below.

1 is a perspective view showing an elastic rubber component 100 of a laminated structure according to an embodiment of the present invention.

Figure 1a shows an example in which the elastic rubber component 100 of the laminated structure according to Figure 1 is used.

2 is a perspective view showing an elastic rubber component 200 of a laminated structure according to another embodiment of the present invention.

3 shows an actual use state of FIG. 2.

4 is a perspective view illustrating an elastic rubber component 300 having a laminated structure according to another embodiment of the present invention.

5 is a flowchart illustrating a manufacturing method according to the present invention.

Claims (12)

Tube-shaped elastic rubber core; An elastic rubber coating layer covering the outer circumferential surface of the core and having a first electrical performance bonded thereto; And Including an elastic rubber coating layer having a second electrical performance different from the first electrical performance is wrapped around the elastic rubber coating layer having the first electrical performance, The elastic rubber component having a laminated structure having electrical performance, characterized in that the core and the elastic rubber coating layer having the first and second electrical performance has a single or complex electrical performance. Sheet-like elastic rubber core; An elastic rubber coating layer having a first electrical performance laminated and bonded to the front and back surfaces of the core; And Including an elastic rubber coating layer having a second electrical performance different from the first electrical performance laminated and bonded on the elastic rubber coating layer having a first electrical performance, The elastic rubber component having a laminated structure having electrical performance, characterized in that the core and the elastic rubber coating layer having the first and second electrical performance has a single or complex electrical performance. The method according to claim 1 or 2, The elastic rubber component having a laminated structure having an electrical performance, characterized in that the metal foil is adhered to at least a portion of the elastic rubber coating layer having the first and second electrical performance exposed to the outside. The method according to claim 1 or 2, The first and second electrical performance is an elastic rubber component having a laminated structure, characterized in that any one of electrical insulation, electrical conductivity, electrical piezoelectricity, electromagnetic wave absorption. The method according to claim 1 or 2, The elastic rubber coating layer having the first and second electrical performances or the elastic rubber coating layer having different electrical performances from the first and second electrical performances are paired on the elastic rubber coating layer having the first and second electrical characteristics. Elastic rubber parts having a laminated structure, characterized in that the electrical performance. The method according to claim 1 or 2, The elastic rubber coating layer is an elastic rubber component having a laminated structure, characterized in that the electrical functional liquid elastic rubber having an adhesive force is formed by bonding by curing. The method according to claim 6, The liquid elastic rubber is a laminated elastic rubber component having an electrical performance, characterized in that formed by mixing at least one of an electrically conductive powder, an electromagnetic wave absorbing powder, or an piezoelectric powder to the liquid silicone rubber. The method according to claim 1 or 2, The elastic rubber component of the laminated structure has an electrical performance of any one of electrical conductivity, electrical piezoelectricity or electromagnetic wave absorbency, or both of these performances. The method according to claim 1 or 2, The laminated rubber component of the laminated structure is an elastic rubber component having a laminated structure, characterized in that it is used for any one of the tube, connector, sheet, electrical contact terminal or gasket. The method according to claim 1 or 2, The elastic rubber component having a laminated structure having an electrical performance, characterized in that the protective layer is formed on the outer surface of the elastic rubber coating layer laminated on the outermost of the elastic rubber coating layer. Continuously feeding the cores; Dipping the core into a liquid silicone rubber having a first electrical performance and then coating and curing the core to form an elastic rubber coating layer having a first electrical performance; The core on which the elastic rubber coating layer having the first electrical performance is formed is coated by dipping into a liquid silicone rubber having a second electrical performance different from the first electrical performance and then cured to form an elastic rubber coating layer having the second electrical performance. Doing; And And a step of cutting the core in which the elastic rubber coating layer having the second electrical performance is formed according to a use. The method of claim 11, The core is a method of manufacturing an elastic rubber component having a thin laminated electrical performance, characterized in that the coating is vertically up from the bottom with respect to the liquid silicone rubber.

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