KR20190067677A - Carbon fiber heating patch and method for manufacturing of the same - Google Patents

Abstract

The present invention relates to a carbon fiber heating patch and a manufacturing method thereof. According to one embodiment of the present invention, provided is the carbon fiber heating patch comprising: a carbon fiber cotton yarn; a conductive member being in contact with both ends of the carbon fiber cotton yarn; a power connection part being in contact with the conductive member; and a film layer located on a front surface and a back surface of the carbon fiber cotton yarn. Therefore, an objective of the present invention is to provide the carbon fiber heating patch having excellent flexibility and heat generating characteristics.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a carbon fiber heating patch,

One embodiment of the present invention relates to a carbon fiber heating patch and a method of manufacturing the same.

Generally, a heating element to which carbon fiber is applied (hereinafter referred to as a 'carbon fiber heating element') is excellent in electric conductivity and can be driven at a low voltage. In addition, the carbon fiber heating element can minimize the generation of electromagnetic waves. In addition, it is an environmentally friendly heating element due to the far-infrared radiation characteristic.

However, the carbon fiber heating element is manufactured into a bundle of several thousands to several hundreds of filaments (fiber diameter of 5 to 8 μm). However, when the carbon fiber yarn is applied, only a part of the filaments which are in contact with the conductive parts are included in the heat generation behavior, resulting in a problem that the heat efficiency is not high.

This is because the conventional carbon fiber bundle is not subjected to the spreading treatment, so that only some filaments of the filaments of the carbon fiber bundle adhere to the conductive portion to participate in the heat generation drive. Particularly, filaments located on the inner surface of the carbon fiber bundle form a dead zone which can not participate in the exothermic behavior. Therefore, a voltage higher than a certain level is required to drive the carbon fiber heating element.

Accordingly, there is a problem that the heating efficiency per unit area of the bundle of carbon fiber heating elements to which the yarn is applied is significantly lowered.

Further, the thickness of the carbon fiber heating element bundle is formed thick, making it difficult to make it slim. In addition, there is a problem that it is not flexible and is vulnerable to heat resistance. In addition, since it is difficult to install a connector on a carbon fiber heating element, automation is difficult and mass production of standardized products is difficult.

To provide a carbon fiber heating patch and a manufacturing method thereof.

Specifically, an ultra slim carbon fiber heating patch can be provided through the widening and slimming steps. Accordingly, it is desired to provide a carbon fiber heating patch having excellent flexibility and heat generation characteristics.

A carbon fiber heating patch according to an embodiment of the present invention includes a carbon fiber cotton yarn, a conductive member contacting both ends of the carbon fiber cotton yarn, a power connecting portion contacting the conductive member, and a film layer . ≪ / RTI >

At this time, the thickness of the carbon fiber cotton yarn may be 5 to 300 mu m.

The number of the filaments per a width of the carbon fiber yarn may be 100 to 1,000 yarns / mm.

The film layer may be a polyimide-based film, a PET film, a nylon film, or a combination thereof. The film layer is not limited thereto and may include all films which are usually capable of thermal lamination.

The width ratio (width / thickness) of the carbon fiber cotton yarn thickness may be 50 to 2,000.

The carbon fiber heating patch includes a plurality of carbon fiber cotton yarns, and the area of the carbon fiber cotton yarns with respect to 100% of the total area may be 10 to 90%.

The distance between the carbon fiber cotton yarns may be 0.5 to 10 times the width of the carbon fiber cotton yarn.

The thickness of the film layer may be 0.01 to 0.5 mm.

The carbon fiber heating patch may further include a cover layer on the front and rear surfaces of the film layer. At this time, the cover layer may be a surface, a nonwoven fabric, or a combination thereof.

Another aspect of the present invention is to provide a carbon fiber heating patch comprising a first carbon fiber cotton yarn positioned in a width direction of a carbon fiber heating patch, a second carbon fiber cotton yarn crossing the first carbon fiber cotton yarn, A first conductive member located at one end of the carbon fiber cotton yarn, the first carbon fiber cotton yarn and the second carbon fiber cotton yarn, and a second conductive member located at the other end of the first carbon fiber cotton yarn and the second carbon fiber cotton yarn, A carbon fiber heating patch including the carbon fiber heating patch.

The carbon fiber heating patch may further include a power connection portion in contact with the conductive member.

The carbon fiber heating patch may further include a cover layer on the front and back surfaces of the carbon fiber cotton yarn, and the cover layer may be a face, a nonwoven fabric, or a combination thereof.

The cover layer may include an adhesive layer, an adhesive layer, or a combination thereof on one side or both sides of the cover layer.

Other than the above-described features, the configuration of the heat generating patch is the same as that of the heat generating patch described above, and thus a detailed description thereof will be omitted.

A method of manufacturing a carbon fiber heating patch according to another embodiment of the present invention includes the steps of preparing a carbon fiber cotton yarn, preparing a first film layer having a conductive member, preparing a second film layer, Placing a carbon fiber cotton yarn on the layer, attaching a power connection to the conductive member, and hot-pressing the second film layer after laminating the carbon fiber cotton yarn on the carbon fiber cotton yarn surface.

At this time, the thickness of the carbon fiber cotton yarn may be 5 to 300 mu m.

In the step of preparing the film, the film may include a polyimide-based film, a PET film, a nylon film, or a combination thereof. . The film layer is not limited thereto and may include all films which are usually capable of thermal lamination.

The step of hot-pressing the carbon fiber cotton yarn and the film may be carried out at a temperature of 120 to 400 ° C.

Specifically, hot pressing can be performed at a pressure of 0.5 to 20 MPa.

Further, the conductive member may be in the form of a thin film.

Both ends of the carbon fiber cotton yarn may contact the conductive member.

According to another aspect of the present invention, there is provided a method of manufacturing a carbon fiber heating patch including the steps of: preparing a carbon fiber cotton yarn, arranging a first carbon fiber cotton yarn in a width direction of the carbon fiber heating patch, Forming a first conductive member on one end of the first carbon fiber cotton yarn and a second carbon fiber cotton yarn by arranging a second carbon fiber cotton yarn on the other end portion of the first carbon fiber cotton yarn and the second carbon fiber cotton yarn, And forming a second conductive member.

After forming the conductive member, the method may further include attaching a power connection to the conductive member, and forming a cover layer on the carbon fiber cotton surface.

Specifically, the step of forming the cover layer on the carbon fiber surface may be performed by forming an adhesive layer, an adhesive layer, or a combination thereof on one side or both sides of the cover layer to adhere to the surface of the carbon fiber cotton.

In the method of manufacturing a carbon fiber heating patch according to an embodiment of the present invention, the step of forming the conductive member may include the steps of impregnating the conductive member with a conductive paste, attaching the conductive thin film, Or a combination of these may be used.

According to an embodiment of the present invention, there is provided a carbon fiber heating patch and a method of manufacturing the same.

By making the carbon fiber yarn wider and slimmer, the slimmer carbon fiber cotton spun tow heating patch can be excellent in flexibility. In addition, the filaments participating in the exothermic behavior can be increased by maximizing the filaments contacting the power conduction portion in the superfine carbon fiber cotton due to the widening. As a result, it is possible to provide a carbon fiber heating patch having a short heating rise time and excellent surface heating efficiency.

In addition, mass production of standardized products can be facilitated.

1 is a schematic view of a carbon fiber heating patch according to an embodiment of the present invention.
FIG. 2 is a schematic view showing an example in which a conductive member is attached to a carbon fiber cotton yarn according to an embodiment of the present invention.
3 is a schematic view of a carbon fiber heating patch according to another embodiment of the present invention.
4 is a schematic view showing an example in which a conductive member is attached to a carbon fiber heating cotton yarn according to another embodiment of the present invention.
5 is a photograph of a carbon fiber heating patch according to the first embodiment of the present invention.
6 is a photograph of a carbon fiber heating patch according to a second embodiment of the present invention.
FIG. 7 is a view illustrating a case where a USB connector is embedded in the base fabric of a power supply connector used in a carbon fiber heating patch according to an embodiment of the present invention.
FIG. 8 is a view illustrating a state where a male connector of a USB connection cable is connected to a female connector, as an example of a power connection part used in a carbon fiber heating patch according to an embodiment of the present invention.
9 is a view showing a state where a conductor is connected to a USB connector as an example of a power connection part used in a carbon fiber heating patch according to an embodiment of the present invention.
10 is a view illustrating a case where a USB connector is exposed to the outside of a cover layer, as an example of a power connection part used in a carbon fiber heating patch according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. However, it is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It is intended that the disclosure of the present invention be limited only by the terms of the appended claims. Like reference numerals refer to like elements throughout the specification.

Thus, in some embodiments, well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention. Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Whenever a component is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements, not the exclusion of any other element, unless the context clearly dictates otherwise. Also, singular forms include plural forms unless the context clearly dictates otherwise.

The carbon fiber heating patch 1 according to an embodiment of the present invention includes a carbon fiber cotton yarn 10, a film layer 20 positioned on the front and back surfaces of the carbon fiber cotton yarn, A conductive member 30, and a power connection 40 in contact with the conductive member.

Hereinafter, a carbon fiber heating patch according to an embodiment of the present invention will be described in detail with reference to FIG. However, the present invention is not limited thereto.

1 is a view showing a carbon fiber heating patch according to an embodiment of the present invention.

First, the carbon fiber heating patch 1 may include a carbon fiber cotton yarn 10.

The thickness of the carbon fiber cotton yarn may be 5 to 300 mu m.

At this time, the carbon fiber cotton yarn may be a heating element of the carbon fiber heating patch.

This may be a step of slimming down the carbon fiber bundle to be described later. As described above, by thinning the thickness of the carbon fiber cotton yarn, it is possible to make the heating patch slimmer.

Specifically, when the thickness of the carbon fiber cotton yarn is within the above range, flexibility can be excellent. More specifically, it is possible to minimize bending damage when laminated with a film, and to produce a heating element having excellent efficiency as a surface-side heating element.

The width of the carbon fiber cotton yarn may be 1 to 1,000 mm. More specifically, it may be 2.5 to 500 mm. However, the present invention is not limited thereto.

This may be a step of widening the carbon fiber bundle to be described later. Specifically, most of the filaments can participate in the exothermic behavior by widening the carbon fiber bundle to include the carbon fiber cotton yarn having the same width as the above range in the exothermic patch. As a result, the occurrence of dead zones that can not be bonded to the conductive parts can be reduced.

The number of filaments included in the carbon fiber cotton yarn width may be 100 to 1,000 yarns / mm. However, this may vary depending on the required heating characteristics. However, the present invention is not limited thereto.

Specifically, the number of filaments contained per width of the carbon fiber bundle before the above-described widening step was 2,000 to 5,000 / mm.

As described above, by controlling the number of filaments functioning as heating elements per unit area of the carbon fiber cotton yarn, the heating efficiency per unit area of the heating patch can be improved. Thus, by controlling the power application amount, it is possible to apply the present invention to a planar heating element with high efficiency.

Specifically, the width ratio (width / thickness) to the carbon fiber cotton yarn thickness may be 50 to 2,000.

As described above, when the ratio of the thickness to the width of the carbon fiber cotton yarn produced by the widening and slimming steps is equal to the above, the heating area per unit area of the heating patch can be improved by increasing the heating area compared to the same applied current amount.

Also, the carbon fiber heating patch may include a plurality of carbon fiber cotton yarns, and the area of the carbon fiber cotton yarn heating element may be 10 to 90% with respect to 100% of the total area of the carbon fiber heating patch. When the carbon fiber area is in the above range, the high-efficiency surface heating effect can be excellent.

Specifically, the interval between the carbon fiber cotton yarns may be 0.5 to 10 times the width of the carbon fiber cotton yarn.

When the distance between the carbon fiber cotton yarns is the same as above, the exothermic effect can be excellent. Specifically, the shorter the interval between the carbon fiber cotton heating elements is, the faster the temperature rise time and the temperature uniformity of the heating patch can be excellent. On the other hand, the wider the gap between the carbon fiber cotton heating elements, the better the energy efficiency can be.

The carbon fiber cotton yarn may include a coating layer.

The coating layer may comprise a thermosetting resin, a hot melt type thermoplastic resin, or a combination thereof. However, the present invention is not limited thereto.

Specifically, the filament constituting the carbon fiber cotton yarn can be fixed by further including a coating layer on the surface of the carbon fiber yarn. In addition, the coating layer may serve as an insulating layer. Thus, even if the carbon fiber cotton yarns including the coating layer are stacked so as to cross each other, a short circuit phenomenon may not be caused.

The film layer 20 may be located on the front and back surfaces of the carbon fiber cotton yarn 10.

Specifically, it may include a first film layer 21 located on the surface of the carbon fiber and a second film layer 22 located on the back surface of the carbon fiber.

The thickness of the film layer may be 0.01 to 0.5 mm. Specifically, when the thickness of the film layer is in the above range, the effect of flexibility due to slimming can be excellent.

Specifically, the film layer may comprise a polyimide-based film, a PET film, a nylon film, or a combination thereof. However, the present invention is not limited thereto, and all the films that can be joined by thermal lamination can be used.

When such a film is used as a film layer, the area in which the carbon fiber cotton yarn and the conductive member are in contact can be increased. Thus, the filament of the carbon fiber cotton yarn which can be driven by heat can be maximized and the temperature efficiency can be excellent. In addition, it is possible to provide excellent durability against folding by making it super thin.

And a conductive member 30 contacting both ends of the carbon fiber cotton yarn 10.

In the specification of the present invention, both end portions of the carbon fiber cotton yarn may refer to both end portions in the longitudinal direction of the carbon fiber cotton yarn.

Specifically, the conductive member 30 may be in contact with at least two sides of the carbon fiber cotton yarn 10 at both ends thereof. More specifically, the conductive member 30 contacts two or more sides of both ends of the carbon fiber cotton yarn 10 and may be located at an edge of the carbon fiber cotton yarn 10.

In addition, the conductive member may be a form in which the positive (+) electrode and the negative (-) electrode do not meet with each other.

By including the conductive member as described above, it is possible to efficiently supply electricity to the carbon fiber cotton yarn through the power connection unit described later.

And a power connection unit 40 that contacts the conductive member 30.

Specifically, the power connection unit 40 may be a connector, a USB connector, or a combination thereof. However, the present invention is not limited thereto, and any power source can be connected.

More specifically, it is possible to connect the external power source and the carbon fiber heating patch through the power connection unit 40. Also, the power connection part 40 may be exposed to the outside of the uppermost layer of the carbon fiber heating patch. However, the present invention is not limited thereto, and it may be built in the upper layer.

This can be confirmed through an example shown in FIGS. 7 to 11 of the present application.

FIG. 7 is a view illustrating a case where a USB connector is embedded in the base fabric of a power supply connector used in a carbon fiber heating patch according to an embodiment of the present invention.

FIG. 8 is a view illustrating a state where a male connector of a USB connection cable is connected to a female connector, as an example of a power connection part used in a carbon fiber heating patch according to an embodiment of the present invention.

9 is a view showing a state where a conductor is connected to a USB connector as an example of a power connection part used in a carbon fiber heating patch according to an embodiment of the present invention.

10 is a view illustrating a case where a USB connector is exposed to the outside of a cover layer, as an example of a power connection part used in a carbon fiber heating patch according to an embodiment of the present invention.

7 shows a case where a USB connector 41 is embedded in the cover layer as an example of the external connection portion. FIG. 8 shows a case where a USB connector cable 41 is connected to a USB connector 41 A male connector 51 may be connected.

9 shows a state in which a conductor 42 is connected to a USB connector 41. FIG. 10 shows a state in which a USB connector 41 is connected to the outside of the cover layer As shown in Fig.

The carbon fiber heating patch may further include a cover layer on the front and rear surfaces of the film layer. Specifically, the cover layer may be a face, a nonwoven fabric, or a combination thereof. However, the present invention is not limited thereto.

The carbon fiber heating patch according to another embodiment of the present invention includes a carbon fiber cotton yarn 10 positioned in the width or longitudinal direction of the carbon fiber heating patch and a conductive member 30 positioned at both ends of the carbon fiber cotton yarn can do.

This is as described in FIG. 2 herein.

The carbon fiber heating patch according to another embodiment of the present invention includes a first carbon fiber cotton yarn 11 positioned in the width direction of the carbon fiber heating patch, a second carbon fiber cotton yarn 11 crossing the first carbon fiber cotton yarn, , A first conductive member (31) positioned at one end of the first carbon fiber cotton yarn and a second carbon fiber cotton yarn, a first carbon fiber cotton yarn (12) positioned at one end of the first carbon fiber cotton yarn and a second carbon fiber cotton yarn The second conductive member 32 positioned at the other end of the carbon fiber heating patch.

This is as disclosed in Figs. 3 and 4 herein.

The carbon fiber heating patch may further include a power connection portion in contact with either the first conductive member 31 or the second conductive member 32.

The first carbon fiber cotton yarn 11 and the second carbon fiber cotton yarn 12 may be electrically contacted from the power connection part by the first conductive member 31 and the second conductive member 32, .

More specifically, the carbon fiber heating patch according to another embodiment of the present invention includes a first carbon fiber cotton yarn 11 positioned in the width direction of the carbon fiber heating patch and a second carbon fiber cotton yarn 11 positioned in the longitudinal direction of the carbon fiber heating patch. The carbon fiber cotton yarn 12 may be in the form of crossing.

However, the surface of the first carbon fiber cotton yarn 11 and the second carbon fiber cotton yarn 12 may further include a coating layer.

As described above, the coating layer can fix the filaments constituting the carbon fiber cotton yarn. In addition, the coating layer may serve as an insulating layer. Thus, even if the carbon fiber cotton yarns including the coating layer are stacked so as to cross each other, a short circuit phenomenon may not be caused.

This can be confirmed from FIG. 2 and FIG.

FIG. 2 is a schematic view showing an example in which a conductive member is attached to a carbon fiber cotton yarn according to an embodiment of the present invention.

4 is a schematic view showing an example in which a conductive member is attached to a carbon fiber heating cotton yarn according to another embodiment of the present invention.

As shown in FIGS. 2 and 4, it can be seen that the first carbon fiber cotton yarn 11 and the second carbon fiber cotton yarn 12 cross each other and are arranged in a lattice (mesh) form. As such, when arranged in a lattice form, there may be a hot spot (heat generation) at the intersection of each carbon fiber. Thus, the heat generation efficiency can be increased as compared with the unidirectional arrangement.

This is because the coating layer on the surfaces of the first carbon fiber cotton yarn 11 and the second carbon fiber cotton yarn 12 serves as an insulating layer, so that short-circuiting is not caused.

Finally, the carbon fiber cotton yarn may further include a cover layer on the front and back surfaces thereof. Specifically, the cover layer may be a face, a nonwoven fabric, or a combination thereof. However, the present invention is not limited thereto.

The cover layer may include an adhesive layer, an adhesive layer, or a combination thereof on one side or both sides of the cover layer.

The cover layer may be made of an adhesive type nonwoven fabric capable of being detachably attached to various substrates (application objects) such as human body, clothes, etc., as well as visco-adhesive compatibility with carbon fiber cotton yarn.

Specifically, when the carbon fiber cotton yarn is adhered to the cover layer at a temperature of about 60 degrees Celsius, the carbon fiber cotton yarn is fixed to one surface of the cover layer, so that the carbon fiber bundle can be prevented from being twisted.

Since other configurations are the same as those described above, detailed description will be omitted.

A method of manufacturing a carbon fiber heating patch according to another embodiment of the present invention is as follows.

Specifically, the method includes the steps of: preparing a carbon fiber cotton yarn, preparing a first film layer having a conductive member attached thereto, preparing a second film layer, disposing a carbon fiber cotton yarn on the first film layer, Attaching a power connection to the conductive member, and hot-pressing after laminating the second film layer on the surface of the carbon fiber cotton yarn.

First, a step of producing a carbon fiber cotton yarn can be carried out.

The step may include spreading the carbon fiber bundle to produce a carbon fiber cotton yarn and slimming the widened carbon fiber cotton yarn.

Specifically, in the widening step, the carbon fiber bundle can be supplied while being unwound from a coil (not shown).

The carbon fiber bundle can be spread with a predetermined width by the air flow generated by the vacuum and the hot air. Specifically, the vacuum generated by the vacuum pump generates a suction air flow, and can strongly attract the carbon fiber bundle. On the other hand, the hot air generated from the hot air blown toward the bundle of carbon fibers collides with the bundle of carbon fibers, and the bundle of carbon fibers is spread to a desired width and slim to the desired thickness.

The carbon fiber bundle may include filaments of 2,000 to 5,000 fibers / mm. The average diameter of the filaments contained in the carbon fiber bundle may be 5 to 8 占 퐉.

The width W of the carbon fiber bundle refers to the size of the carbon fiber bundle in a direction perpendicular to the length L of the bundle of carbon fibers, In the direction orthogonal to the plane.

By the above-described widening step, the carbon fiber bundle can be widened to 2 to 10 times the initial width. The width of the carbon fiber cotton yarn thus produced may be 1 to 1,000 mm. More specifically, it may be 2.5 to 500 mm. However, the present invention is not limited thereto.

In addition, the filaments in the carbon fiber bundle widened by the slimming step can be slim with a ratio of 1/2 to 1/25 of the initial thickness. The thickness of the carbon fiber cotton yarn thus produced may be 5 to 300 mu m.

The number of the filaments per a width of the carbon fiber yarn may be 100 to 1,000 filaments / mm. Specifically, the width ratio (width / thickness) to the carbon fiber cotton yarn thickness may be 50 to 2,000.

Since the effect of the carbon fiber cotton yarn is as described above, a detailed description thereof will be omitted.

Specifically, the step of fabricating the carbon fiber cotton yarn may further include the step of coating the carbon fiber cotton yarn surface.

In addition, the coating step may include dipping the wider carbon fiber yarn in a coating liquid, and drying the coating liquid on the carbon fiber cotton yarn surface.

At this time, a thermosetting resin, a hot-melt type thermoplastic resin, or a combination thereof may be used as a coating liquid. However, the present invention is not limited thereto, and any material can be used for fixing the filaments constituting the carbon fiber cotton yarn in a widened state.

When such coating is performed, the filaments constituting the carbon fiber cotton yarn can be fixed.

Thereafter, a step of preparing a first film layer to which a conductive member is attached may be performed.

In this step, the film may include a polyimide-based film, a PET film, a nylon film, or a combination thereof. However, the present invention is not limited thereto and may include all films which are usually capable of thermal lamination.

When such a film is used as a film layer, the area in which the carbon fiber cotton yarn and the conductive member are in contact can be increased. Thus, the filament of the carbon fiber cotton yarn which can be driven by heat can be maximized and the temperature efficiency can be excellent. In addition, it is possible to provide excellent durability against folding by making it super thin.

More specifically, if a film of this kind is not used, then there may be a deformation of the film layer structure during the hot pressing step. In addition, there is a risk of fire.

In addition, the conductive member attached to the first film layer may be in the form of a thin film.

Then, a step of preparing the second film layer can be carried out.

The film of the second film layer may also include a polyimide-based film, a PET film, a nylon film, or a combination thereof. However, the present invention is not limited thereto and may include all films which are usually capable of thermal lamination.

Thereafter, a step of disposing a carbon fiber cotton yarn on the first film layer may be performed.

At this time, both ends of the carbon fiber cotton yarn may be in contact with the conductive member attached to the first film layer.

In this specification, both end portions of the carbon fiber cotton yarn may refer to both end portions in the longitudinal direction of the carbon fiber cotton yarn.

Accordingly, the conductive member can be attached to both ends of the carbon fiber cotton yarn at least two sides. More specifically, the conductive member contacts two or more sides of both ends of the carbon fiber cotton yarn, and may be attached to the edge of the carbon fiber cotton yarn.

Further, when arranging the carbon fiber cotton yarn on the first film layer, it is possible to arrange the carbon fiber cotton yarn using a plurality of carbon fiber cotton yarns. Specifically, the interval between the carbon fiber cotton yarns may be 0.5 to 10 times the width of the carbon fiber cotton yarn.

In the case of such arrangement, the exothermic effect can be excellent. This is because the heat generated from the carbon fiber cotton is conducted along the film layer to generate heat in the entire heat generating patch area.

Specifically, the shorter the interval between the carbon fiber cotton heating elements is, the faster the temperature rise time and the temperature uniformity of the heating patch can be excellent. On the other hand, the wider the gap between the carbon fiber cotton heating elements, the better the energy efficiency can be.

However, if it is too narrow, the power consumption may increase. If it is too wide, the temperature rise time may be long and the temperature uniformity may deteriorate. Accordingly, carbon fiber cotton yarns can be arranged within the above range.

The carbon fiber cotton yarn may be arranged in one direction. On the other hand, carbon fiber cotton yarns can be arranged to intersect. However, the present invention is not limited thereto.

Thereafter, a step of attaching a power connection to the conductive member may be performed.

The power connection may be a connector, a USB connector, or a combination thereof. However, the present invention is not limited thereto, and any power source can be connected.

More specifically, it is possible to connect the external power source and the carbon fiber heating patch through the power connection portion.

Lastly, the step of hot-pressing the second film layer after laminating the second film layer on the surface of the carbon fiber cotton can be performed.

In the above-described step, a carbon fiber cotton yarn was arranged on the first film layer to which the conductive member was attached. Thereafter, the second film layer may be further laminated on the surface of the carbon fiber cotton in the above step to perform hot pressing.

Accordingly, the film layer may be positioned on the front and back surfaces of the carbon fiber cotton yarn and the conductive member.

At this time, the hot pressing step may be performed at a temperature of 120 to 400 ° C.

Specifically, it can be carried out at a pressure of 0.5 to 20 MPa.

By hot pressing under the above conditions, the carbon fiber cotton yarn and the film can be efficiently bonded. When hot-pressing is performed as described above, the deformation of the film is minimized and it can be bonded to the carbon fiber cotton yarn.

More specifically, when the hot-pressing temperature is less than 120 ° C, fusion of the film is not easy and lifting phenomenon may be caused. On the other hand, when the hot-pressing temperature exceeds 400 ° C, the surface of the adhesive film melts and the flexibility and thickness consistency of the carbon fiber heating patch can not be maintained.

Thereafter, the method may further include forming a cover layer on the front and back surfaces of the film. At this time, the cover layer may include a surface, a nonwoven fabric, or a combination thereof. However, the present invention is not limited thereto.

Another embodiment of the present invention is a method of manufacturing a carbon fiber yarn, comprising the steps of: preparing a carbon fiber cotton yarn; disposing the carbon fiber cotton yarn in a width or length direction of the carbon fiber heating patch; and forming a conductive member at both ends of the carbon fiber cotton yarn .

According to another embodiment of the present invention, there is provided a method of manufacturing a carbon fiber heating patch, comprising the steps of: preparing a carbon fiber cotton yarn; arranging a first carbon fiber cotton yarn in a width direction of the carbon fiber heating patch; Forming a first conductive member on one end of the first carbon fiber cotton yarn and the second carbon fiber cotton yarn and forming a second conductive member on the other end of the first carbon fiber cotton yarn and the second carbon fiber cotton yarn, To form a second layer.

According to another aspect of the present invention, there is provided a method of manufacturing a carbon fiber heating patch, comprising the steps of: disposing a first carbon fiber cotton yarn in a width direction of a carbon fiber heating patch; The step of arranging the cotton yarn can be carried out.

As described above, the surface of the first carbon fiber cotton yarn 11 and the second carbon fiber cotton yarn 12 may further include a coating layer.

As described above, the coating layer can fix the filaments constituting the carbon fiber cotton yarn. In addition, the coating layer may serve as an insulating layer. Thus, even if the carbon fiber cotton yarns including the coating layer are stacked so as to cross each other, a short circuit phenomenon may not be caused.

Thereafter, one conductive member is formed on one end of the first carbon fiber cotton yarn and the second carbon fiber cotton yarn, and a second conductive member is formed on the other end of the first carbon fiber cotton yarn and the second carbon fiber cotton yarn Step can be carried out.

Specifically, the step of forming the conductive member includes the steps of: impregnating the conductive member with a conductive paste; Attaching a conductive thin film; Depositing a conductive material by sputtering; Or a combination thereof.

More specifically, the step of adhering the conductive thin film may be performed before the step of impregnating with the conductive paste or after the step of impregnating with the conductive paste. Specifically, it can be carried out after impregnation with a paste and after drying. Thus, the conductive thin film may be attached to the portion to which the conductive paste is impregnated. However, the present invention is not limited thereto.

More specifically, the step of depositing the conductive material by the sputtering method may be carried out before the step of impregnating with the conductive paste or after the step of impregnating with the conductive paste.

More specifically, the step of depositing the conductive material may be performed by omitting the step of impregnating with the paste and the step of impregnating and drying the paste. In this case, the step of depositing the conductive material may be performed after the carbon fiber cotton yarn manufacturing step.

The conductive thin film may protrude from both ends of the carbon fiber cotton yarn by a predetermined length in the width direction of the carbon fiber cotton yarn for easy power supply.

This is also illustrated in FIG. 2 herein.

First, in the step of forming the conductive member, a method of impregnating conductive paste on both ends of the carbon fiber cotton yarn may be used. The above step may include the step of impregnating and drying.

At this time, the conductive paste may be in the form of a slurry.

Specifically, the conductive paste may be any one selected from silver (Ag) paste, gold (Au) paste, copper (Cu) paste, nickel (Ni) paste, carbon nanotube A paste, or a synthetic paste containing at least one or more of these pastes.

When the conductive paste is used, both ends of the carbon fiber cotton yarn in the longitudinal direction can be easily impregnated by a desired length.

On the other hand, a method of attaching a conductive foil can be used. Specifically, the conductive thin film may be further attached on the portion where the conductive paste is impregnated. However, one end of the conductive thin film may protrude a predetermined length in the width direction of the carbon fiber cotton yarn at both ends of the carbon fiber cotton yarn for easy power supply.

At this time, the conductive foil may include a copper (Cu) thin film, a silver (Ag) thin film, a gold (Au) thin film, a nickel (Ni) thin film or a combination thereof. However, the present invention is not limited thereto. The thickness of the conductive thin film may be 100 nm to 500 nm.

A method of depositing a conductive material by a sputtering method may also be used.

Specifically, a sputtering method of forming a thin film by evaporating a conductive material in a vacuum state can be used.

At this time, the conductive material may include copper (Cu), silver (Ag), gold (Au), carbon fiber, or a combination thereof.

It is also possible to apply a film layer in which a conductive material (copper (Cu), silver (Ag), gold (Au), etc.) is formed as a thin film. At this time, the pure film layer was arranged on the laminated body arranged so that the carbon fiber cotton yarns were arranged at the predetermined distance on the film layer thin film conductive portion, and then, after applying the power supply circuit, hot-pressed was possible.

The conductive paste, the conductive thin film, and the conductive material may be made of a material having electrical conductivity higher than that of the carbon fiber for efficient heat generation of the filaments in the carbon fiber cotton yarn. Accordingly, the contact resistance with the carbon fiber cotton yarn is minimized, so that it is possible to realize heat generation at a low voltage (e.g., DC 5V).

2 through 4, examples of the attachment of the conductive member can be confirmed.

FIG. 2 is a schematic view showing an example in which a conductive member is attached to a carbon fiber cotton yarn according to an embodiment of the present invention.

3 is a schematic view of a carbon fiber heating patch according to another embodiment of the present invention.

4 is a schematic view showing an example in which a conductive member is attached to a carbon fiber heating cotton yarn according to another embodiment of the present invention.

As shown in FIG. 2, the conductive member may be attached in a straight line to both ends of the carbon fiber cotton yarn so as to apply a positive (+) electrode and a negative (-) electrode.

As shown in FIG. 3, they may be attached to two sides of the carbon fiber cotton yarn in the form of a letter or letter, respectively. At this time, the first carbon fiber cotton yarn and the second first carbon fiber cotton yarn may cross each other.

As shown in FIG. 4, the carbon fiber cotton yarn can be attached in a straight line to both ends of the carbon fiber cotton yarn. At this time, the first carbon fiber cotton yarn and the second first carbon fiber cotton yarn may cross each other.

That is, by including the conductive member as described above, electricity can be efficiently supplied to the carbon fiber cotton yarn.

Specifically, after the step of forming the conductive member, a step of attaching the power connection to the conductive member may be further included. Accordingly, the power supplied through the power source heat coupling can be transmitted to the carbon fiber cotton yarn by the conductive member.

More specifically, since the step of producing the carbon fiber cotton yarn is as described above, a detailed description will be omitted.

Hereinafter, the embodiment will be described in detail. The following examples are illustrative of the present invention only and are not intended to limit the scope of the present invention.

Example  One

A carbon fiber cotton yarn for a carbon fiber heating patch was prepared.

Then, the surface of the carbon fiber cotton filament was coated with a thermosetting resin.

Further, a polyimide film (first film layer) and a pure polyimide film (second film layer) each having a conductive member of a copper foil were prepared.

Seven carbon fiber cotton yarns were prepared and arranged at an interval of four times the width of the carbon fiber cotton yarn.

Then, both ends of the carbon fiber cotton yarn were arranged so as to be in contact with the copper foil conductive member attached to the polyimide film (first film layer). Thereafter, a USB connector power connection was attached to the conductive member.

Finally, the second film layer was disposed on the surface of the carbon fiber yarn disposed at regular intervals on the first film layer, laminated, and hot-pressed. At this time, the temperature and the press pressure were set to 260 占 폚 and 10 MPa.

This is as shown in Fig.

5 is a photograph of a carbon fiber heating patch according to the first embodiment of the present invention.

However, it should be understood that the present invention is not limited thereto.

Example  2

The carbon fiber heating patch according to Example 1 further included a cover layer.

This is as shown in FIG.

6 is a photograph of a carbon fiber heating patch according to a second embodiment of the present invention.

As shown in Fig. 6, by forming a cover layer on the carbon fiber heating patch, it can be used for various purposes.

Accordingly, the carbon fiber heating patch according to an embodiment of the present invention can be detachably attached to commercial clothing and / or skin. Also, since a pure DC power source is not used to generate electromagnetic waves, it is harmless to the human body, It is beneficial to the human body.

It should be noted that the heat-generating patch is mainly applicable to the following fields, but it is possible to produce the heat-generating patch in all fields requiring heat generation.

- Textile applications: Applicable to textile products such as cushions, jumpers, shoes, shirts and gloves.

- Skin application field: Oriental medicine and medical par, ejaculatory relief, pain control, analgesic anti-inflammatory ingredients can penetrate deeper than ever before to relieve pain.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand.

It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be interpreted as being included in the scope of the present invention .

1: Carbon Fiber Fever Patch
10: Carbon fiber cotton yarn
11: First carbon fiber cotton yarn
12: second carbon fiber cotton yarn
20: film layer
21: first film layer
22: Second film layer
30: conductive member 31: first conductive member
32: second conductive member
40: Power connection
41: USB connector
42: Conductor
50: USB connection cable
51: Connector for USB connection cable (male connector)

Claims (27)

Carbon fiber cotton;
A conductive member contacting both ends of the carbon fiber cotton yarn;
A power connection portion in contact with the conductive member; And
And a film layer disposed on a front surface and a back surface of the carbon fiber cotton yarn,
The thickness of the carbon fiber cotton yarn is 5 to 300 탆,
Wherein the number of filaments per the carbon fiber cotton yarn width is 100 to 1,000 yarns / mm.
The method of claim 1,
Wherein the film layer comprises:
A polyimide film, a PET film, a nylon film, or a combination thereof.
3. The method of claim 2,
Wherein the film layer has a thickness of 0.01 to 0.5 mm.
A carbon fiber cotton yarn positioned in the width direction or the longitudinal direction of the carbon fiber heating patch; And a conductive member located at both ends of the carbon fiber cotton yarn.
A first carbon fiber cotton yarn positioned in the width direction of the carbon fiber heating patch;
A second carbon fiber cotton yarn intersecting the first carbon fiber cotton yarn and positioned in the longitudinal direction of the carbon fiber heating patch;
A first conductive member positioned at one end of the first carbon fiber cotton yarn and the second carbon fiber cotton yarn; And
And a second conductive member located at the other end of the first carbon fiber cotton yarn and the second carbon fiber cotton yarn.
5. The method according to claim 4 or 5,
The carbon fiber heating patch comprises:
And a power connection portion in contact with the conductive member.
5. The method according to claim 4 or 5,
The carbon fiber heating patch comprises:
Further comprising a cover layer on the front and back surfaces of the carbon fiber cotton yarn,
Wherein the cover layer is a face, a nonwoven fabric, or a combination thereof.
5. The method according to claim 4 or 5,
A carbon fiber heating patch comprising an adhesive layer, an adhesive layer, or a combination thereof on one or both sides of the cover layer.
9. The method according to any one of claims 1 to 8,
A coating layer is disposed on the surface of the carbon fiber cotton yarn,
Wherein the coating layer is an insulating layer.
9. The method according to any one of claims 1 to 8,
Wherein the carbon fiber cotton yarn has a width to width ratio (width / thickness) of 50 to 2,000.
9. The method according to any one of claims 1 to 8,
Wherein the carbon fiber heating patch includes a plurality of carbon fiber cotton yarns,
Wherein the area of the carbon fiber cotton yarn is 10 to 90% with respect to 100% of the total area.
9. The method according to any one of claims 1 to 8,
Wherein the interval between the carbon fiber cotton yarns is 0.5 to 10 times the width of the carbon fiber cotton yarn.
Producing a carbon fiber cotton yarn;
Preparing a first film layer to which a conductive member is attached;
Preparing a second film layer;
Disposing a carbon fiber cotton yarn on the first film layer;
Attaching a power connection to the conductive member; And
And hot-pressing the second film layer on the carbon fiber cotton surface,
Wherein the thickness of the carbon fiber cotton yarn is 5 to 300 mu m.
The method of claim 13,
In the step of preparing the film,
Wherein the film comprises a polyimide-based film, a PET film, a nylon film, or a combination thereof.
The method of claim 13,
Hot pressing the carbon fiber cotton yarn and the film,
A method for producing a carbon fiber heating patch, which is carried out at a temperature of 120 to 400 占 폚.
16. The method of claim 15,
Hot pressing the carbon fiber cotton yarn and the film,
At a pressure of 0.5 to 20 MPa.
The method of claim 13,
Wherein the conductive member is in the form of a thin film.
The method of claim 13,
A method of manufacturing a carbon fiber heating patch in which both ends of the carbon fiber cotton yarn are in contact with the conductive member
Producing a carbon fiber cotton yarn;
Disposing the carbon fiber cotton yarn in a width direction or a length direction of the carbon fiber heating patch;
And forming a conductive member at both ends of the carbon fiber cotton yarn.
Producing a carbon fiber cotton yarn;
Disposing a first carbon fiber cotton yarn in a width direction of the carbon fiber heating patch;
Disposing a second carbon fiber cotton yarn in a longitudinal direction of the carbon fiber heating patch;
Forming a first conductive member on one end of the first carbon fiber cotton yarn and the second carbon fiber cotton yarn; And
And forming a second conductive member on the other end of the first carbon fiber cotton yarn and the second carbon fiber cotton yarn.
The method according to claim 19 or 20,
After the step of forming the conductive member,
Attaching a power connection to the conductive member, and
And forming a cover layer on the surface of the carbon fiber cotton yarn.
The method according to claim 19 or 20,
The step of forming the cover layer on the surface of the carbon fibers may include:
Wherein a cover layer, an adhesive layer, or a combination thereof is formed on one side or both sides of the cover layer to adhere to the surface of the carbon fiber cotton.
The method according to claim 19 or 20,
Wherein forming the conductive member comprises:
Impregnating with a conductive paste;
Attaching a conductive thin film;
Depositing a conductive material by sputtering; Or a combination thereof.
21. The method according to any one of claims 13 to 20,
The step of producing the carbon fiber cotton yarn includes:
Fabricating a carbon fiber cotton yarn by spreading a carbon fiber bundle; And
And slimming the widened carbon fiber cotton yarn.
21. The method according to any one of claims 13 to 20,
Wherein the widening comprises:
Wherein the width of the carbon fiber bundle is 2 to 10 times wider than the initial width of the carbon fiber bundle.
21. The method according to any one of claims 13 to 20,
Wherein the slimming step comprises:
Wherein the filament is slim with a ratio of 1/2 to 1/25 of the initial thickness of the filaments in the carbon fiber bundle.
21. The method according to any one of claims 13 to 20,
The step of producing the carbon fiber cotton yarn includes:
Further comprising the step of coating the surface of the slimized carbon fiber cotton yarn.

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