KR20180131148A - heating patch - Google Patents

Abstract

Provided is a heat emitting patch. According to an embodiment of the present invention, the heat emitting patch comprises: a base substrate having flexibility; an electrode part patterned on at least one surface of the base substrate to generate heat when power is applied; and a cover member disposed on at least one surface of the base substrate to prevent external exposure of the electrode par.

Description

Heating patch {heating patch}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a heat generating patch, and more particularly, to a heat generating patch capable of securing flexibility and realizing a uniform heat generating temperature.

In general, a mask pack is used to supply the skin to the face by nourishing the skin of the face by attaching to the face in a state containing an active substance or cosmetics containing various ingredients useful for the skin such as a moisturizing agent, a whitening agent, etc. A method of attaching a mask pack made of a nonwoven fabric or the like to the face for a predetermined period of time has been used to absorb a large amount of the skin deeply. However, the simple absorption of the active ingredient of the mask pack has a problem that satisfactory amount of skin absorption, efficacy and effect can not be obtained.

A method of improving the cosmetic composition itself in order to satisfy an effective amount of skin absorption of an effective ingredient of a mask pack and to obtain its efficacy and effect has been utilized in many cases. However, in view of cost, there is a problem of an increase in manufacturing cost and an inefficiency in price increase .

In order to solve this problem, Korean Utility Model No. 428586 discloses a thermal mask for a hot pack which attaches an area heating element to the inner surface of the outer housing.

However, since the surface heating element is simply attached to the outer surface of the body, the above-mentioned patent has a problem that it can not be brought into close contact with the bent portion when it is applied to the bent portion of the body. There is a limit that can not be.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heat-generating patch which can easily attach to a body and increase adhesion by providing a base substrate with elasticity and flexibility.

It is another object of the present invention to provide a heat generating patch capable of ensuring uniformity of heat generation temperature.

SUMMARY OF THE INVENTION In order to solve the above-described problems, the present invention provides a semiconductor device comprising: a base substrate having flexibility; An electrode unit formed on at least one surface of the base substrate to generate heat when power is applied; And a cover member disposed on at least one side of the base substrate to prevent external exposure of the electrode unit.

The base substrate may be a nanofiber web having a three-dimensional network structure having fine pores. For example, the nanofiber web may be formed by electrospinning a spinning solution containing a synthetic polymer and a solvent.

Further, the cover member may be made of a material having moisture-proof property and stretchability.

The cover member may be fixed to one surface of the base substrate through an adhesive layer or directly to one surface of the base substrate through heat fusion.

The electrode unit may include a pair of first electrode units and second electrode units that are not electrically connected to each other, and a heating unit that conducts the first electrode unit and the second electrode unit when power is supplied thereto and generates heat .

The heat generating unit may have a predetermined area on the base substrate so as to allow or block the electrical connection between the first electrode unit and the second electrode unit depending on a heating temperature while connecting the first electrode unit and the second electrode unit. And may be a constant-temperature heating material that is pattern-formed. For example, the constant temperature heating material may be a conductive heating material.

The first electrode portion may include a plurality of first extended electrodes extending in one direction with an interval from the first lead electrode having a predetermined length, and the second electrode portion may include a gap from the second lead electrode having a predetermined length And the plurality of first extending electrodes and the plurality of second extending electrodes may be alternately arranged so that at least a part thereof overlaps with each other with an interval therebetween.

The first extension electrode and the second extension electrode, which are paired with each other among the plurality of first extension electrodes and the second extension electrodes, may be connected to each other via the heating unit.

In addition, the base substrate may include a thermochromic material whose color changes depending on the temperature.

In addition, a color change layer including a thermochromic material whose color changes according to temperature may be disposed on one surface of the base substrate.

According to the present invention, since the base substrate is formed of a nanofiber web having micropores, flexibility and stretchability are ensured, so that adhesion to the body can be facilitated and adhesion can be enhanced.

Further, in the present invention, since the heat generating portion is constituted by the constant temperature heating material, the uniformity of the temperature can be ensured.

1 is a schematic view showing a heat generating patch according to an embodiment of the present invention,
FIG. 2 is a plan view showing a state in which an electrode portion applied to a heat generating patch according to the present invention is formed on a base substrate,
3 is a view showing a detailed configuration of an electrode part applied to a heating patch according to the present invention,
4 is a diagram schematically showing a method of forming an electrode portion on a base substrate in a heat generating patch according to the present invention,
5 is a schematic view showing a heating patch according to another embodiment of the present invention,
FIG. 6 is a schematic view showing a heat generating patch according to another embodiment of the present invention,
7 is a view showing various shapes in which a heat generating patch according to the present invention can be implemented.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

The heating patch 100 according to the present invention includes a base substrate 110, an electrode portion 120, and a cover member 130 as shown in Fig.

The base substrate 110 supports the electrode unit 120 formed on at least one side of the base substrate 110, and may be in the form of a plate having a predetermined area. At this time, the base substrate 110 according to the present invention is formed of a nanofiber web having fine pores so as to ensure flexibility and flexibility while preventing cracks from occurring in the electrode patterns constituting the electrode unit 120 .

For example, the base substrate 110 may be a nanofiber web on which the nanofibers 112 containing a synthetic polymer are accumulated, as shown in FIG. That is, the base substrate 110 may have fine pores 114 filled with a paste for forming the electrode unit 120, and the nanofiber web may have a three-dimensional network structure. At this time, the pore size of the fine pores may be formed to have an appropriate size in consideration of the particle size of the paste. This is because penetration or impregnation of the paste particles may not be smooth when the pore size of the micropores is too small.

Specifically, the base substrate 110 may be a single-layer nanofiber web accumulated so as to have fine pores 114 by electrospinning a spinning solution containing a synthetic polymer and a solvent. Here, the solvent may be water or an alcohol, or may be an organic solvent other than water or alcohol.

In this case, the synthetic polymer may be a fiber-forming polymer capable of realizing a nanofiber web through electrospinning while having elasticity and flexibility. As a concrete example, the synthetic polymer may be a polyvinylidene fluoride (PVDF) alone or a mixture of PVDF and polyurethane (PU) in a certain amount, but the present invention is not limited thereto, And all materials known in the art can be used as long as it is a fiber-forming polymer having stretchability and flexibility.

As described above, in the heat generating patch 100 according to the present invention, the base substrate 110 on which the electrode unit 120 is formed is realized in the form of a nanofiber web through a synthetic polymer having stretchability and flexibility, have.

Accordingly, even if the heating patch 100 according to the present invention is applied to the curved portion of the skin, the heat generated from the electrode portion 120 can be smoothly transmitted to the skin by increasing the adhesion with the skin .

The electrode unit 120 is formed on at least one surface of the base substrate 110 in a predetermined pattern to generate heat when power is applied. Accordingly, the heat generating patch 100 according to the present invention can realize a thermal function through heat generated from the electrode unit 120 when power is supplied.

The electrode unit 120 may be formed in a predetermined pattern on one side of the base substrate 110 through a variety of known methods such as plating, etching, and printing using a conductive material.

At this time, at least a part of the electrode unit 120 may be made of a conductive constant temperature heating material so that the electrode unit 120 can uniformly generate heat at a target temperature. Here, the conductive constant-temperature heat generating material is a known PTC material for increasing the resistance and suppressing the heat generation temperature when the temperature rises, and more specifically, it may be a conductive carbon paste.

As described above, the heat generating patch 100 according to the present invention uniformly generates heat at the target temperature during the power supply, so that it is possible to reliably realize effects such as thermal insulation and skin beauty enhancement.

For this purpose, the electrode unit 120 may be formed of the conductive constant-temperature heat-generating material as a whole of the electrode unit. However, considering the power consumption and the material cost, only the main purpose of the heat- .

For example, the electrode unit 120 includes a pair of first electrode units 121 and second electrode units 122 that are not electrically connected to each other as shown in FIGS. 2 and 3, And a heating unit 123 that conducts the first electrode unit 121 and the second electrode unit 122 and generates heat.

The first electrode part 121 and the second electrode part 122 may be formed of a material including Ag or Cu used for forming an electrode pattern. The heating part 123 may be formed of a conductive material, And may be formed of a constant temperature heating material. The first electrode unit 121 and the second electrode unit 122 may generate power when the power is applied, but may serve as a power source for supplying power to the heating unit 123, The heat generating unit 123 may generate heat when power is supplied, thereby providing heat.

Accordingly, when the exothermic temperature reaches the target temperature through the power supply, the heat generating unit 123 is short-circuited through the increase of the resistance to electrically connect the first electrode unit 121 and the second electrode unit 122 When the heating temperature is lower than the target temperature, the first electrode unit 121 and the second electrode unit 122 are electrically connected to each other through a decrease in resistance, so that the temperature can be raised to the target temperature through heat generation. (123) can always generate heat at a uniform target temperature.

The first electrode unit 121 and the second electrode unit 122 may include a plurality of extended electrodes 121b and 122b extending in one direction with an interval from the lead electrodes 121a and 122a having a predetermined length, And the extension electrode 121b of the first electrode unit 121 and the extension electrode 122b of the second electrode unit 122 may be alternately arranged such that at least a part thereof overlaps with each other .

The heat generating part 123 may be formed on one surface of the base substrate 110 with a predetermined area so that the extended electrode 121b of the first electrode part 121 and the second electrode part 122 The extension electrode 122b of the electrode assembly 122 can be connected.

The first electrode part 121 and the second electrode part 122 may be formed on the base substrate 110 by a printing method using an Ag paste and the heating part 123 may be formed of a conductive carbon paste May be formed by using a printing method using the ink.

Although the heating unit 123 is formed after the first electrode unit 121 and the second electrode unit 122 are formed on the base substrate 110, the present invention is not limited thereto, and the heating unit 123 may be first formed on the base substrate 110 and then the first electrode unit 121 and the second electrode unit 122 may be formed. In addition, the first electrode part 121 and the second electrode part 122 may be formed by attaching a thin metal member such as plating, etching, or a copper foil.

4, the paste to be printed on the base substrate 110 to form the first electrode unit 121, the second electrode unit 122, and the heat generating unit 123 is formed on the base substrate 110 The micro pores 114 formed in the base substrate 110 may be completely or partially filled.

Accordingly, the base substrate 110 may serve as a circuit board on which the electrode unit 120 is pattern-formed. Accordingly, the base substrate 110 functions as a circuit board on which the electrode unit 120 is formed by the nanofiber web in which the nanofibers are accumulated, and thus, compared with the polyimide film conventionally used for the flexible circuit board The warpage is remarkably excellent, and even if it is folded or wrinkled, it is excellent in restoration characteristic that it can return to the original flat state.

In addition, the heating patch 100 according to the present invention is configured such that the electrode portion 120 is formed on the surface of the base substrate 110 and the fine pores 114 formed in the base substrate 110, even if the base substrate 110 is warped or wrinkled ) Is filled with particles of the paste, the possibility of cracking is reduced. Even if cracks are generated in a part of the pattern due to warping or wrinkling, at least a part of the paste is connected through the paste filled in the micropores 114 The ability to maintain state can significantly reduce the likelihood of an electrical short.

The cover member 130 prevents the electrode unit 120 formed on at least one surface of the base substrate 110 from being exposed to the outside. In addition, when the heating patch 100 according to the present invention is applied to a wet environment such as a mask pack or a functional material applied to a user's body, liquid substance such as moisture is prevented from flowing into the electrode unit 120 side Can play a role.

Accordingly, even if the heating patch 100 according to the present invention is applied to a wet environment, the moisture can be prevented from flowing into the electrode unit 120 through the cover member 130, thereby enabling stable driving.

The cover member 130 may cover the electrode unit 120 only locally or may have an area substantially equal to or wider than that of the base substrate 110.

For example, the cover member 130 may be a sheet made of a material such as a fluoropolymer resin such as PU, PET, PP, or PE, a release paper, a fabric, or a leather, or may be a silicon material. Or the like.

That is, the cover member 130 may be made of a material having flexibility and stretchability, like the base substrate 110 having flexibility and flexibility, The cover member 130 may be made of a material having flexibility and stretchability as well as moisture-proof property.

 The cover member 130 may be separately formed on one side of the base substrate 110 and may be part of the other product when the heating patch 100 according to the present invention is applied to other products such as clothes.

1, the cover member 130 may be provided on only one side of the base substrate 110, and may be formed on both sides of the base substrate 110, as shown in FIGS. 5 and 6, . In the case where the heat generating patch 200 according to the present invention includes two cover members 130 disposed on both sides of the base substrate 110, It may be a release film to be removed.

In addition, the cover member 130 may be attached to one surface of the base substrate 110 via an adhesive layer 140 or may be directly fixed to one surface of the base substrate 110 through thermal fusion. Here, the adhesive layer 140 may be a liquid or gel-like inorganic material type, or may be a base material coated with an adhesive material on both sides of the substrate.

Meanwhile, the heat generating patch 300 according to the present invention may include a thermochromic material so that the user can easily check the exothermic temperature of the heat generating unit 123 when power is supplied. The thermochromic discoloring material may be a pigment that changes color when the temperature reaches a predetermined temperature. The thermochromic discoloring material has a basic color when the set temperature is not reached, and a milky white form when the set temperature is reached. .

Such a thermochromic material acts as an indicator for confirming the exothermic temperature of the exothermic unit 123, thereby easily confirming whether the exothermic temperature is raised to the target temperature.

Such a thermochromic material may be included in the coloring layer 150 disposed between the base substrate 110 and the cover member 130 as shown in FIG. As a specific example, the discoloration layer 150 may be formed by applying a spinning liquid containing the thermochromic coloring material together with a synthetic polymer to the nanofibers accumulated in the three-dimensional network structure through electrospinning as in the case of the base substrate 110 described above Web.

However, the present invention is not limited thereto, and when the base substrate 110 is realized in the form of a nanofiber web in which the nanofibers are accumulated in a three-dimensional network structure without forming a separate color changing layer 150, The base material 110 may serve as an indicator by including the thermochromic material in the spinning solution.

On the other hand, the spinning method for forming the base substrate 110 and / or the discoloration layer 150 to be applied to the present invention is not limited to the general spinning, air spinning, electrospraying, electrospray spinning, centrifugal spinning, It should be noted that any one of them can be used.

In addition, the heating patches 100, 200, and 300 according to the present invention may have various shapes as shown in FIG. 7, and may be implemented as a healthcare product, a skin cosmetic product, or a medical product. In addition, the heat generating patches 100, 200 and 300 according to the present invention can be applied to wearable devices such as a smart watch and a smart glass as well as clothing products such as a vest and a shoe garment, and beauty sheets such as a mask pack .

As a non-limiting example, when the heat generating patches 100, 200, 300 according to the present invention are mounted on one surface of the mask pack, the heat generating patches 100, 200, 300 according to the present invention apply heat to the mask pack, Function, it is possible to open the pores of the skin so that the nutrients inherent in the mask pack penetrate deep into the skin. That is, it is possible to improve the blood circulation of the user's skin through heat transmitted from the heat-generating patches (100, 200, 300), to increase penetration of the useful substance by the capillary enlargement action, etc., Can be maximized.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100, 200, 300: heat generating patch 110: base substrate
112: nanofiber 114: micropores
120: electrode part 121: first electrode part
122: second electrode part 121a, 122a: lead electrode
121b, 122b: extension electrode 123:
130: cover member 140: adhesive layer
150: discoloration layer

Claims (12)

A base substrate having flexibility;
An electrode unit formed on at least one surface of the base substrate to generate heat when power is applied; And
And a cover member disposed on at least one surface of the base substrate to prevent external exposure of the electrode unit. The method according to claim 1,
Wherein the base substrate is a nanofiber web of a three-dimensional network structure having fine pores. 3. The method of claim 2,
Wherein the nanofiber web is formed by electrospinning a spinning solution containing a synthetic polymer and a solvent. The method according to claim 1,
Wherein the cover member is made of a material having moisture-proof property and stretchability. The method according to claim 1,
Wherein the cover member is attached to one surface of the base substrate through an adhesive layer or is directly fixed to one surface of the base substrate through heat fusion. The method according to claim 1,
Wherein the electrode unit includes a pair of first electrode units and second electrode units that are not electrically connected to each other and a heating unit including a heating unit that conducts the first electrode unit and the second electrode unit when the power is supplied, . The method according to claim 6,
The heat generating unit may connect the first electrode unit and the second electrode unit to each other to form a pattern with a predetermined area on the base substrate so as to allow or block the electrical connection between the first electrode unit and the second electrode unit, Which is a conductive constant temperature pyrogen. 8. The method of claim 7,
Wherein the constant temperature heating material is a PTC material. The method according to claim 6,
Wherein the first electrode portion includes a plurality of first elongated electrodes extending in one direction with a gap from a first lead electrode having a predetermined length,
Wherein the second electrode portion includes a plurality of second extending electrodes spaced apart from the second lead electrode having a predetermined length in one direction,
Wherein the plurality of first extension electrodes and the second extension electrodes are alternately arranged so that at least a part thereof overlaps with each other with an interval therebetween. 10. The method of claim 9,
Wherein the first extension electrode and the second extension electrode, which are paired with each other among the plurality of first extension electrodes and the second extension electrodes, are connected to each other through the heat generating unit. The method according to claim 1,
Wherein the base substrate includes a thermochromic material whose color changes with temperature. The method according to claim 1,
Wherein a color change layer including a thermochromic material having a color changing depending on a temperature is disposed on one surface of the base substrate.

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