KR102372671B1 - heating patch - Google Patents

Abstract

A heating pad is provided. A heating patch according to an exemplary embodiment of the present invention includes a flexible base material; an electrode part patterned on at least one surface of the base material to generate heat when power is applied; and a cover member for covering at least one surface of the base substrate to prevent external exposure of the electrode part, wherein the base substrate is a nanofiber web having micropores, and the electrode part includes a conductive material filling the micropores It may be formed in a predetermined pattern.

Description

heating patch

The present invention relates to a heating patch, and to a heating patch capable of ensuring flexibility and realizing a uniform heating temperature.

In general, a mask pack is attached to the face in a state containing active substances or cosmetics containing various ingredients useful for the skin, such as moisturizers and whitening agents, to supply nutrients to the skin of the face and to make the skin elastic, In order to absorb a large amount deeply into the skin, a method of attaching a mask pack made of non-woven fabric to the face for a certain period of time has been used. However, there was a problem that a satisfactory skin absorption amount and efficacy and the effect could not be obtained by simply absorbing the active ingredient of the mask pack.

Although many methods are being used to improve the cosmetic composition itself in order to meet the effective skin absorption of the active ingredient of the mask pack and obtain its efficacy and effect, the problem of the increase in manufacturing cost and the problem of weak efficiency compared to the price increase in terms of cost have it

In order to solve this problem, in Republic of Korea Registered Utility Model No. 428586, a thermal mask for a poultice pack in which a planar heating element is attached to the inner surface of the outer surface has been proposed.

However, in the above patent, since the planar heating element is simply attached to the outer surface, there is a problem that when applied to a curved part of the body, it cannot be completely in close contact with the curved part, and it simply generates heat and heats at a uniform temperature. There is a limit that cannot be.

The present invention has been devised in view of the above points, and an object of the present invention is to provide a heating patch that can be easily attached to the body and can increase adhesion to the skin because the base material has elasticity and flexibility.

Another object of the present invention is to provide a heating patch capable of ensuring uniformity of heating temperature.

In order to solve the above problems, the present invention provides a base material having flexibility; an electrode part patterned on at least one surface of the base material to generate heat when power is applied; and a cover member for covering at least one surface of the base substrate to prevent external exposure of the electrode part, wherein the base substrate is a nanofiber web having micropores, and the electrode part includes a conductive material filling the micropores It provides a heating patch that is formed in a predetermined pattern.

For example, the nanofiber web may be formed by electrospinning a spinning solution in which a synthetic polymer and a solvent are mixed.

In addition, the cover member may be made of a material having moisture-proof properties and elasticity.

In addition, the cover member may be attached to one surface of the base material through an adhesive layer or directly fixed to one surface of the base material through thermal fusion.

In addition, the electrode part may include a pair of first and second electrode parts that are not electrically connected to each other, and a heating part that conducts the first electrode part and the second electrode part when power is supplied and generates heat. .

In addition, the heating part may be a constant temperature heating material patterned to have a predetermined area on the base material, and the first electrode part and the second electrode part according to the heating temperature while connecting a part of the first electrode part and the second electrode part It is possible to allow or block the electrical connection of the electrode part. For example, the constant temperature heating material may be a conductive heating material.

In addition, the first electrode unit may include a plurality of first extension electrodes extending in one direction at a distance from each other from the first lead electrode having a predetermined length, and the second electrode unit is a second lead having a predetermined length. It may include a plurality of second extension electrodes extending in one direction at a distance from each other, wherein the plurality of first extension electrodes and the second extension electrodes have at least some lengths to overlap each other at a distance from each other. The first lead electrode or the second lead electrode may be alternately disposed along the longitudinal direction.

In addition, the first and second extension electrodes forming a pair among the plurality of first and second extension electrodes may be connected to each other through the heating unit.

In addition, the base material may include a thermochromic material that changes color according to temperature.

In addition, in the heating patch, a color-changing layer including a temperature-sensitive color-changing material that changes color according to temperature may be disposed on one surface of the base material.

According to the present invention, the base material is formed of a nanofiber web having micropores to ensure flexibility and elasticity, so that it can be easily attached to the body and the adhesion with the skin can be increased.

In addition, according to the present invention, the heating unit can be heated at a uniform temperature by being configured using a constant temperature heating material.

1 is a schematic view showing a heating patch according to an embodiment of the present invention, showing a state in which a cover member is separated from a base material;
2 is a plan view showing a state in which an electrode part applied to a heating patch according to the present invention is formed on a base material;
3 is a view showing the detailed configuration of the electrode part applied to the heating patch according to the present invention, showing a state in which the heating part is separated from the first electrode part and the second electrode part;
4 is a view schematically showing a method in which an electrode part is formed on a base material in the heating patch according to the present invention;
5 is a schematic view showing a heating patch according to another embodiment of the present invention, showing a state in which the cover member is separated from the base material;
6 is a schematic view showing a heating patch according to another embodiment of the present invention, showing a state in which the cover member and the discoloration layer are separated from the base substrate;
7 is a view showing various shapes of the heating patch according to the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the present invention. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and the same reference numerals are added to the same or similar elements throughout the specification.

The heating patch 100 according to an embodiment of the present invention includes a base material 110 , an electrode unit 120 , and a cover member 130 as shown in FIG. 1 .

The base material 110 may support the electrode unit 120 formed on at least one surface, and may be provided in a plate shape having a predetermined area. At this time, the base material 110 according to the present invention may be formed of a nanofiber web having micropores to prevent cracks from occurring in the electrode pattern constituting the electrode part 120 while ensuring flexibility and flexibility. can

For example, the base material 110 may be a nanofiber web in which nanofibers 112 including a synthetic polymer are accumulated as shown in FIG. 4 . That is, the base material 110 may have micropores 114 in which the paste for constituting the electrode unit 120 may be filled, and the nanofiber web may be formed in a three-dimensional network structure. In this case, the pore size of the micropores may be formed to have an appropriate size in consideration of the particle size of the paste. This is because, when the pore size of the micropores is too small, penetration or impregnation of the paste particles may not be smooth.

Specifically, the base material 110 may be a single-layer nanofiber web accumulated to have micropores 114 by electrospinning a spinning solution in which a synthetic polymer and a solvent are mixed. Here, the solvent may be water or alcohol, or 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 specific example, the synthetic polymer may be in the form of polyvinylidene fluoride (PVDF) used alone or a mixture of PVDF and polyurethane (PU) in a certain amount, but is not limited thereto, and the nanofiber web through electrospinning can be implemented, and all known materials can be used as long as it is a fiber-forming polymer having elasticity and flexibility.

As described above, in the heating patch 100 according to an embodiment of the present invention, the base material 110 on which the electrode part 120 is formed is implemented in the form of a nanofiber web through a synthetic polymer having elasticity and flexibility, thereby providing elasticity and flexibility. can be obtained

Accordingly, even when the heating patch 100 according to an embodiment of the present invention is applied to the curved part of the skin, it is possible to increase the adhesion with the skin, so that the heat generated by the electrode part 120 is smoothly transferred to the skin side. can be transmitted.

The electrode part 120 is formed in a predetermined pattern on at least one surface of the base material 110 to generate heat when power is applied. Accordingly, the heating patch 100 according to an embodiment of the present invention can implement a heating function through the heat generated by the electrode part 120 when power is supplied.

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

At this time, at least a part of the electrode part 120 may be made of a conductive constant temperature heating material so as to uniformly heat to a target temperature when power is supplied. Here, the conductive constant temperature heating material suppresses the heating temperature by increasing resistance when the temperature rises, and may be a known PTC material, and more specifically, a conductive carbon paste.

As described above, the heating patch 100 according to an embodiment of the present invention is uniformly heated to a target temperature when power is supplied, thereby stably implementing effects such as warmth or skin beauty enhancement.

To this end, in the electrode part 120, the entire pattern constituting the electrode part may be made of the conductive constant temperature heating material, but in consideration of power consumption and material cost, only the portion for generating heat is made of the conductive constant temperature heating material. can

As an example, as shown in FIGS. 2 and 3 , the electrode part 120 includes a pair of first and second electrode parts 121 and 122 that are not electrically connected to each other, and when power is supplied, the The first electrode unit 121 and the second electrode unit 122 may be configured to include a heat generating unit 123 that generates heat while conducting.

In this case, the first electrode part 121 and the second electrode part 122 may be formed of a material containing Ag or Cu, which is generally used to form an electrode pattern, and the heating part 123 is conductive. It may be formed of a constant temperature heating material. Accordingly, although the first electrode part 121 and the second electrode part 122 generate heat when power is applied, they can serve as a power supply supplying power to the heating part 123, and the heating part 123 may serve to provide heat by generating heat when power is supplied.

For this reason, when the heating temperature reaches the target temperature through the power supply, the heating part 123 is short-circuited through an increase in resistance to electrically connect the first electrode part 121 and the second electrode part 122 . When the heating temperature is lower than the target temperature, the first electrode part 121 and the second electrode part 122 are electrically connected to each other through a decrease in resistance, so that the temperature can be raised to the target temperature through heating, and the heating part (123) can always be heated to a uniform target temperature.

As a specific example, each of the first electrode part 121 and the second electrode part 122 has a plurality of extension electrodes 121b and 122b extending in one direction at a distance from the lead electrodes 121a and 122a having a predetermined length. ), and the extension electrode 121b of the first electrode part 121 and the extension electrode 122b of the second electrode part 122 are alternately arranged so that at least a part of the length of the extension electrode 122b is spaced apart and overlapped with each other. can be

In addition, the heating part 123 made of the conductive constant temperature heating material is formed on one surface of the base material 110 in a predetermined area, so that the extension electrode 121b of the first electrode part 121 and the second electrode part 122 are formed. ) can be connected to the extension electrode 122b.

In addition, each of the first electrode part 121 and the second electrode part 122 may be formed on the base material 110 through a printing method using Ag paste, and the heating part 123 may be formed with a conductive carbon paste. It may be formed by a printing method using

Although the drawing shows that the heating part 123 is formed after the first electrode part 121 and the second electrode part 122 are formed on the base material 110, the present invention is not limited thereto, and the heating part ( 123) is first formed on the base material 110, and then the first electrode part 121 and the second electrode part 122 may be formed. In addition, each of the first electrode part 121 and the second electrode part 122 may have a form in which a thin metal member such as plating, etching, or copper foil is attached.

At this time, the paste printed on the base substrate 110 to form the first electrode unit 121 , the second electrode unit 122 , and the heating unit 123 is applied to the base substrate 110 as shown in FIG. 4 . ) may be completely filled or partially filled with the micropores 114 formed in the base substrate 110 along with one surface.

Through this, the base material 110 can serve as a circuit board on which the electrode part 120 is patterned. Accordingly, the base material 110 is made of a nanofiber web in which nanofibers are accumulated, and serves as a circuit board on which the electrode part 120 is formed. It has excellent bending properties and can have excellent restoration properties that can return to the original flat state even when folded or wrinkled.

In addition, in the heating patch 100 according to an embodiment of the present invention, even if the base material 110 is bent or crumpled, the electrode part 120 is formed on the base material 110 together with the surface of the base material 110 . Since the particles of the paste are filled in the micropores 114 side, the possibility of cracking is reduced, and even if cracks occur in a part of the pattern due to bending or wrinkling, through the paste filled in the micropores 114 side By allowing at least some of them to remain connected, the possibility of an electrical short circuit can be significantly reduced.

The cover member 130 is to prevent the electrode part 120 formed on at least one surface of the base material 110 from being exposed to the outside. In addition, when the heating patch 100 according to an embodiment of the present invention is applied to a wet environment such as a mask pack or a functional material applied to the user's body, a liquid material such as moisture flows into the electrode part 120 side. It can play a role in preventing it from happening.

Accordingly, even if the heating patch 100 according to an embodiment of the present invention is applied to a wet environment, it can be stably driven by preventing moisture, etc. from flowing into the electrode part 120 through the cover member 130 . .

Such a cover member 130 may cover only the electrode part 120 locally, or may be provided to have an area approximately equal to or larger than that of the base material 110 .

As an example, the cover member 130 may be in the form of a sheet made of a material such as a fluoropolymer resin such as PU, PET, PP, PE, release paper, fabric, or leather, or may be made of a silicone material, or a resin material made of an insulator. It may be in the form of a molding formed through.

That is, the cover member 130 may be made of a material having flexibility and elasticity like the base material 110 having flexibility and flexibility, and the heating patch 100 according to an embodiment of the present invention is suitable for use in a wet environment. To be applicable, the cover member 130 may be made of a material having flexibility and elasticity as well as moisture-proof properties.

Such a cover member 130 may be separately formed on one surface of the base material 110, and when the heating patch 100 according to an embodiment of the present invention is applied to other products such as clothes, the other products. may be some

In addition, the cover member 130 may be provided only on one surface of the base substrate 110 as shown in FIG. 1 , and on both sides of the base substrate 110 as shown in FIGS. 5 and 6 , respectively. may be provided. In addition, when the heating patches 200 and 300 according to an embodiment of the present invention include two cover members 130 respectively disposed on both surfaces of the base material 110 , any one of the two cover members 130 . may be a release film that is removed in the course of use.

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

On the other hand, the heating patch 300 according to an embodiment of the present invention may include a thermochromic material so that a user can easily check the heating temperature of the heating part 123 when power is supplied. Here, the thermochromic material is a compound that reacts with temperature and may be a pigment that changes color when a set temperature is reached. can be

Such a temperature-sensitive color-changing material serves as an indicator to check the heating temperature of the heating unit 123, so that it can be easily checked whether the heating temperature is raised to the target temperature.

Such a temperature-sensitive color-changing material may be included in the color-changing layer 150 disposed between the base substrate 110 and the cover member 130 as shown in FIG. 6 . As a specific example, the color-changing layer 150 is nanofibers in which nanofibers are accumulated in a three-dimensional network structure through electrospinning of a spinning solution containing the thermochromic material together with a synthetic polymer, similarly to the above-described base material 110 . It could be the web.

However, the present invention is not limited thereto, and when the base substrate 110 is implemented in the form of a nanofiber web in which nanofibers are accumulated in a three-dimensional network structure without forming a separate discoloration layer 150, the base substrate 110 Since the temperature-sensitive color-changing material is included in the spinning solution for forming the base material 110 , the base material 110 may serve as an indicator at the same time.

On the other hand, the spinning method for forming the base substrate 110 and/or the color-changing layer 150 applied to the present invention includes general electrospinning, air electrospinning, electrospinning, electrospinning, centrifugal electrospinning, and flash electrospinning. Please indicate which one is available.

In addition, the heating patch 100, 200, 300 according to an embodiment of the present invention may have various shapes as shown in FIG. 7 in its overall shape, and may be implemented as a health care product, a skin beauty product, etc., as a medical product. may be implemented. In addition, the heating patch 100, 200, 300 according to an embodiment of the present invention may be applied to wearable devices such as smart watches and smart glasses as well as clothing products such as vests, shoes, and clothing, and may be applied to beauty sheets such as mask packs. make it clear that

As a non-limiting example, when the heating patch 100, 200, 300 according to an embodiment of the present invention is implemented in a form that is attached to one surface of the mask pack, the heating patch 100, 200, 300 according to an embodiment of the present invention is applied to the mask pack. By providing a heating function to the user's body by applying heat, it can open the pores of the skin so that the nutrients contained in the mask pack can penetrate deep into the skin. In other words, it is possible to improve the blood circulation of the user's skin through the heat transferred from the heating patches 100, 200, and 300, and increase the penetration of useful substances into the skin by the action of expanding capillaries, and by maximizing the effect of removing wastes, etc. can be maximized.

Although one embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art who understand the spirit of the present invention can add components within the scope of the same spirit. , changes, deletions, additions, etc. may easily suggest other embodiments, but this will also fall within the scope of the present invention.

100,200,300: Heating patch 110: Base material
112: nanofiber 114: micropores
120: electrode part 121: first electrode part
122: second electrode part 121a, 122a: lead electrode
121b, 122b: extension electrode 123: heating part
130: cover member 140: adhesive layer
150: color change layer

Claims (12)

a base material having flexibility;
an electrode part patterned on at least one surface of the base material to generate heat when power is applied; and
and a cover member covering at least one surface of the base material to prevent external exposure of the electrode part;
The base material is a nanofiber web having micropores,
A heating patch in which the electrode part is formed in a predetermined pattern by filling the micropores with a conductive material. delete The method of claim 1,
The nanofiber web is a heating patch formed by electrospinning a spinning solution in which a synthetic polymer and a solvent are mixed. The method of claim 1,
The cover member is a heat-generating patch made of a material having moisture-proof properties and elasticity. The method of claim 1,
The cover member is attached to one surface of the base material through an adhesive layer as a medium or a heating patch that is directly fixed to one surface of the base material through thermal fusion. The method of claim 1,
The electrode part includes a pair of first and second electrode parts that are not electrically connected to each other, and a heating part that generates heat while conducting the first and second electrode parts when power is supplied. 7. The method of claim 6,
The heating part is a conductive constant temperature heating material that is patterned to have a predetermined area on the base substrate,
The conductive constant temperature heating material is a heating patch that allows or blocks electrical connection of the first electrode part and the second electrode part according to the heating temperature while connecting a part of the first electrode part and the second electrode part. 8. The method of claim 7,
The constant temperature heating material is a PTC material. 7. The method of claim 6,
The first electrode part includes a plurality of first extension electrodes each extending in one direction at a distance from each other from the first lead electrode having a predetermined length,
The second electrode part includes a plurality of second extension electrodes each extending in one direction at a distance from each other from the second lead electrode having a predetermined length,
The plurality of first and second extension electrodes are alternately disposed along a longitudinal direction of the first lead electrode or the second lead electrode so that at least some lengths of the first and second extension electrodes overlap each other at a distance from each other. 10. The method of claim 9,
A heating patch in which a pair of first and second extension electrodes of the plurality of first and second extension electrodes are connected to each other through the heating part. The method of claim 1,
The base material is a heating patch comprising a thermochromic material that changes color according to temperature. The method of claim 1,
The heating patch is a heating patch in which a color-changing layer containing a temperature-sensitive color-changing material that changes color according to temperature is disposed on one surface of the base material.

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