KR20070090854A - Heating pack unit - Google Patents

Abstract

A heating pack unit is provided to let a user directly attach and detach a heating pack and to reduce inconvenience without waiting until the temperature of the heating pack unit is lowered by indirectly contacting an outer pack by a cover part. A heating pack unit is composed of an outer pack(200) storing food stuffs; an inner pack joined in the outer pack to form an independent space isolated from the food stuff and provided with an opening(310); and a heating pack(400) inserted into or drawn from the inner pack through the opening of the inner pack. The heating pack has a reaction liquid storing part; a heating body generating heat by reacting with the reaction liquid; and an absorbing member which delays reaction speed by absorbing the reaction liquid if the reaction liquid and the heating body react with each other. The inner pack is combined along a predetermined region of the rim of the outer pack.

Description

Heating Pack Unit {HEATING PACK UNIT}

1 is a perspective view briefly showing the configuration of a conventional heating package,

2 is a cross-sectional view showing a section taken along the line II-II of FIG. 1;

Figure 3 is a perspective view briefly showing the configuration of the heating package in the first embodiment of the present invention,

4 is an exploded perspective view of a heating package according to the first embodiment of the present invention of FIG.

5 is an exploded perspective view showing the configuration of the heat pack of Figure 4,

6 is a cross-sectional view taken along the line VI-VI of FIG. 3;

7A and 7B are perspective views illustrating an embodiment of a cover unit according to a second embodiment of the present invention;

8 is a cross-sectional view showing a state in which the heating package according to the second embodiment of the present invention is accommodated in the cover portion,

9 is a perspective view showing the configuration of a receiving cup according to a third embodiment of the present invention;

10 is a cross-sectional view showing the configuration of the receiving cup of FIG.

11 is a cross-sectional view showing a state in which the heating package according to the third embodiment of the present invention accommodated in the receiving cup;

12 is an exploded perspective view showing another embodiment of a heat pack according to the present invention.

Explanation of symbols on the main parts of the drawings

100: heating package 200: outer pack

210: spout 300: inner pack

310: opening 400: heat pack

410: reaction liquid bag 420: heating element

430: first accommodating part 440: second accommodating part

500: cover 600: receiving cup

F: Food

The present invention relates to a heating package, and more particularly, to a heating package in which the heat generation structure of the heating package is improved.

The heating package is a disposable package that contains liquid contents such as beverages and herbs and semi-solid foods such as porridge, soups and sauces, and can be easily heated and consumed anytime, anywhere. The demand for such a heating package is increasing day by day as outdoor family activities increase.

The heating package includes a reaction liquid therein and a heating element that generates heat by reacting with the reaction liquid, and the reaction liquid and the semi-heater react by the external pressure to heat food therein. The structure of such a conventional heating package is disclosed in detail in patent application 2004-0041835 filed by the applicant.

1 is a perspective view briefly illustrating a structure of a conventional heating package 10. As shown in the figure, the conventional heating package 10 includes an outer pack 20 for receiving food and a heat pack 30 is received in the outer pack 20 to generate heat. And when using the conventional heating package 10, when the user applies pressure in the direction of the arrow shown in Figure 2, the reaction liquid storage part 35 contained in the heat generating pack 30 bursts and the reaction liquid is leaked to the heating element 31 Reacts with and heat is generated as the food (F) is heated.

However, the conventional heating package 10 is sealed after the heat pack 30 is accommodated inside the outer pack 20, when the user bursts the reaction liquid by applying pressure, the heat pack 30 is also burst together so that the reaction liquid outside There is a risk of mixing with the food (F) inside the pack has caused user concerns about safety.

In addition, the conventional heating package 10 is an external pack is sealed, so a separate steam outlet (not shown) for discharging water vapor generated during the reaction of the heating element and the reaction liquid to the outside should be formed on one side of the outer pack 20. There was a hassle. In particular, since the outer pack 20 is formed by overlapping a plurality of wrapping paper, in order to manufacture such a steam outlet (not shown), an additional process must be added. Therefore, a problem arises that the manufacturing time increases and the manufacturing cost increases.

Accordingly, it is an object of the present invention to provide a heat pack unit that can be used safely by a user and the manufacturing process is simple.

The object is in the heat pack unit according to the present invention, the outer pack for storing food; An inner pack coupled to an inner side of the outer pack to form an independent space shielded from the food, and having an opening in one region; It is provided to be able to draw in and out in the inner pack through the opening of the inner pack, the reaction liquid storage unit, a predetermined reaction liquid is stored, a heating element that generates heat by reacting with the reaction liquid, the reaction liquid and the heating element And a heat generating pack accommodating the absorbing member to delay the reaction rate by absorbing the reaction liquid during the reaction of the heat pack, wherein the heat generating pack accommodates the reaction liquid storage unit and the heat generating body and the reaction liquid absorbs the exothermic reaction The reactor body includes a first accommodating part to permeate; A heat pack further comprising a second accommodating part accommodating the first accommodating part and being introduced into and taken out of the outer pack and preventing the reaction liquid flowing out of the first accommodating part from flowing out to the outside during an exothermic reaction; Can be achieved by the unit.

Here, the inner pack is preferably coupled along a portion of the edge portion of the outer pack.

And, the opening is preferably provided in the lower portion of the inner pack.

In addition, the inner pack is preferably provided to have a smaller capacity than the outer pack.

Here, the inner pack preferably includes a far infrared ray emitting material.

Here, the material of the first accommodating portion preferably includes a rayon nonwoven fabric.

And, the material of the second accommodating portion is preferably provided with an aluminum material.

Here, the absorbing member preferably includes cotton wool.

On the other hand, the outer pack is preferably provided with a spout to facilitate the user's intake of internal food in one area of the outer surface.

In addition, it is preferable to further include a cover portion provided to accommodate the entire outer pack.

The apparatus may further include a cover part provided to accommodate an outer area of the outer pack corresponding to the heat pack.

Here, the cover portion may be detachably provided at one side and may include a detachable member for exposing a portion of the outer pack to the outside.

The cover part may include a bottom surface corresponding to the opening of the inner pack and having a predetermined area.

In addition, the bottom surface is preferably provided with an absorbing member that can absorb the reaction solution.

And, the cover portion is preferably provided with a material containing a paper.

The cover part may be made of a material including plastic.

The cover part may be provided in a cup shape.

On the other hand, the surface of the outer pack may be provided with letters and symbols that change color depending on the change in temperature.

In addition, the surface of the cover portion may be provided with letters and symbols that change color with the change of temperature.

The letters and symbols may be formed by a reversible type Zion ink which returns to an initial color when the temperature returns to its original state.

The letters and symbols may be formed by an irreversible type Zion ink that retains discolored color and does not return to the initial color even when the temperature returns to its original state.

On the other hand, an object of the present invention is a heat pack unit, the outer pack for storing food; A heat pack provided to be heat-transferable to the outer pack and having a reaction liquid storage unit in which a predetermined reaction liquid is stored, and a heating element generating heat by reacting with the reaction liquid; The outer pack and the heat pack may be achieved by a heat pack unit comprising a receiving cup for receiving the outer pack and the heat pack so as to be mutually heat transfer.

And, it is preferable that the accommodation cup accommodates a portion of the outer pack.

In addition, the inner side of the receiving cup is preferably provided with a heat pack support protrusion formed to support the heat pack.

And, the receiving cup includes a bottom surface having a predetermined area, the heat pack support is preferably provided at a predetermined height from the bottom surface.

In addition, the receiving cup preferably includes a material that emits far infrared rays.

On the other hand, an object of the present invention is a heat pack unit, the outer pack for storing food; An inner pack coupled to an inner side of the outer pack to form an independent space shielded from the food, and having an opening in one region; A plastic reaction liquid storage unit for storing a predetermined reaction liquid and having a fracture groove which is formed in a predetermined position and broken when an external force is applied; A heating element generating heat by reacting with the reaction liquid; An absorbing member for absorbing the reaction liquid and delaying the reaction rate when the reaction liquid and the heating element react; It can be achieved by a heating pack unit for receiving the reaction liquid storage unit and the heating element and the absorbing member and a heating pack which is provided to be drawn into and taken out of the inner pack through the opening of the inner pack. have.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a perspective view briefly showing the configuration of the heating pack unit 100 according to the first embodiment of the present invention, Figure 4 is an exploded perspective view of the heating pack unit 100.

As shown in the drawing, the heat pack unit 100 according to the first embodiment of the present invention is accommodated in the outer pack 200, the outer pack 200, the food is stored in the outer pack 200 and the opening 310 in one area It includes an inner pack 300 having, and a heat pack 400 for entering and withdrawing into the inner pack 300 through the opening 310 to heat the food.

The outer pack 200 is provided with a material having a proper durability to accommodate the food (F) and protect the food (F) against external pressure. The outer pack 200 may be provided in various shapes and sizes depending on the amount of food to be stored. The spout 210 is opened and closed by a cap on the upper end of the outer pack 200 can be convenient when the user drinks the food inside.

The inner pack 300 is provided inside the outer pack 200 to accommodate the heat pack 400 and to form the opening 310 in one region. The inner pack 300 forms an independent space so that the reaction liquid and the food inside the outer pack 200 are not spilled and introduced and mixed with each other, and is preferably made of a material that does not pass liquid. The inner pack 300 is preferably made of a material containing aluminum. In addition, the inner pack 300 may include a material emitting far infrared rays. The inner pack 300 is produced by coating a material such as tourmaline (tourmaline), natural earth, elvan, charcoal and the like that emits far infrared rays on the inner surface, or by crushing the far infrared emitting materials in the manufacturing of the inner pack 300 and mixing them with an aluminum material. Can be.

When the far-infrared emitting material is included, the far-infrared rays generated from the inner pack 300 may resonate with the heat generated from the heat generating pack 400 so that heat may be evenly distributed in the inner pack 300, thereby increasing the heat generating efficiency. In addition, the heat generation time can be delayed.

6 is a cross-sectional view showing a cross section of the cooling pack unit 100 according to the first embodiment of the present invention. As shown in the cooling pack unit 100, the inner pack 300 is accommodated in the lower end of the outer pack 200. Here, the inner pack 300 is sealed together to seal parts on both sides of the outer pack 200, and the lower end of the inner pack 300 is respectively sealed with the packaging material of the lower end of the outer pack 200, the coupling portion 230 By forming a) to maintain the airtight so that food in the outer pack 200 is not leaked to the outside, the inside of the heat pack 400 forms an opening 310 which can be entered.

Meanwhile, another embodiment of the inner pack 300 may be coupled to one end of the side of the outer pack 200 to form an opening 310 in the side.

As shown in FIG. 5, the heat generating pack 400 includes a reaction liquid storage unit 410 in which the reaction liquid is stored, a heating element 420 which generates heat by reacting with the reaction liquid, and a reaction liquid storage unit 410. And a first accommodating part 430 accommodating the heating element 420, and a second accommodating part 440 accommodating the first accommodating part 430 and drawn in and out of the inner pack 300.

The reaction liquid storage unit 410 stores the reaction liquid, burst by an external pressure, and outflows the reaction liquid to the outside. The reaction liquid storage part 410 may be provided in various forms such as a bag shape and a box shape, and is preferably made of a thin material having elasticity so as to burst by pressing. Since the shape and material of the reaction liquid storage unit 410 are the same as in the related art, redundant description is omitted.

The heating element 420 reacts with the reaction liquid to generate heat. The heating element 420 is a mixture of calcium oxide, calcium hydroxide, magnesium chloride, iron, and the like, and heats food by the reaction heat generated while reacting with the reaction liquid. The heating element 420 is stored inside the nonwoven fabric 420a for uniform reaction with the reaction liquid.

The first accommodating part 430 accommodates the reaction liquid storage part 410 and the heating element 420. The reaction liquid generated during the reaction of the reaction liquid and the heating element 420 passes through and absorbs the reaction liquid. The first accommodating part 430 is made of a non-woven fabric such as a rayon absorbing nonwoven fabric to absorb the reaction liquid when the reaction liquid and the heating element react to prevent external leakage of the reaction liquid, and slowly supply the reaction liquid to the heating element to react with the reaction rate and reaction. You can adjust the time. In addition, the first accommodating part 430 penetrates through a reactor body such as water vapor generated during an exothermic reaction and discharges it to the outside.

Here, the first accommodating part 430 is provided to accommodate the heating element 420 and the reaction liquid storage part 410 therein during the manufacturing process, or the second accommodating part separately from the heating element 420 and the reaction liquid storage part 410. It may be provided in the unit 440.

Meanwhile, a cotton wool (not shown) may be further included in the first accommodating part 430 to help absorb the reaction liquid.

The second accommodating part 440 accommodates the first accommodating part 430 and prevents external leakage of the reaction liquid generated during the reaction. The second accommodating part 440 is hermetically packaged by receiving the heating element 420, the reaction liquid storage part 410, and the first accommodating part 430 during the manufacturing process, and the user opens and uses the first accommodating part 430. The heating element 420 and the reaction liquid storage part 410 are accommodated therein and drawn through the opening 310 of the inner pack 300.

The second accommodating part 440 is preferably made of a material containing aluminum which is not absorbed or permeated with water to prevent leakage of the reaction liquid. In this case, the second accommodating part 440 made of aluminum blocks the water vapor from being absorbed into the second accommodating part 440 until it is used by the user after manufacture, thereby causing the heating element 420 to react with the water vapor. It can prevent it beforehand.

A method of using the heat pack unit 100 according to the first embodiment of the present invention having such a configuration will be described with reference to FIGS. 3 to 6.

First, the user pulls out the second accommodating part 440 accommodated in the inner pack 300 through the opening 310, and opens the cutout 441 of the second accommodating part 440. Then, the heating element 420 and the reaction liquid storage part 410 accommodated in the second accommodating part 440 are accommodated in the first accommodating part 430, and the first accommodating part 430 is inserted into the second accommodating part 440. do.

Then, the second receiving part 440 is introduced into the inner pack 300 such that the opening 443 of the second receiving part 440 opened by the user faces the inner pack 300. Then, the user presses the inner pack 300 in front and rear to burst the reaction liquid storage unit 410 inside. At this time, the reaction liquid bursts and reacts with the heating element, and heats the food stored in the outer pack 200 by the heat generated therein.

During the exothermic reaction, the reaction liquid is absorbed into the first storage unit 430, and the reaction liquid that is not absorbed and leaked does not flow out to the outside by the second storage unit 440. Meanwhile, the reactor body is permeated from the first storage unit 430 and flows out through the opened opening 443 of the second storage unit 440.

Here, when the user folds the inlet of the opening 310 or secures it with a clip or the like, the heating efficiency of heating food may be further increased.

On the other hand, the far-infrared radiation material contained in the inner pack 300 radiates far infrared rays during the exothermic reaction so that the heat generated by the exothermic reaction is distributed evenly inside the inner pack 300, and the heat is maintained for a long time to generate heat Can be delayed.

As described above, the heating pack unit 100 according to the first embodiment of the present invention, since the user directly assembles the heat pack 400 in the inner pack 300, the inside of the heating pack unit 100 with the naked eye You can check it. In addition, even after use, you can check whether the heating pack and the food is mixed, you can use the heating pack unit with confidence.

On the other hand, since the reactor is leaked through the opening of the inner pack, there is no need to form a separate vent to the sealing portion of the outer pack, the manufacturing process is simplified and the manufacturing cost can be reduced.

7A and 7B and 8 are a perspective view and a cross-sectional view showing the configuration of the heat pack unit 100 'according to the second embodiment of the present invention. As shown in the figure, the heat pack unit 100 'according to the second embodiment of the present invention includes a cover portion 500, 500' for accommodating the outer pack 400. The cover parts 500 and 500 ′ are provided to accommodate the position of the outer pack 200 in which the heat pack 300 is accommodated so that the user can easily grasp the outer pack 200 heated by the heat of the heat pack 400. Make sure The cover parts 500 and 500 ′ may be provided to accommodate the entire outer pack 200 or may be provided to accommodate a partial region of the outer pack 200.

The cover parts 500 and 500 'may be used to accommodate the outer pack 200 when pressurizing the outer pack 200 and starting to generate heat as in the first embodiment, and external to the cover 500 from an initial state. The pack 200 may be pressurized while receiving the pack 200 to cause an exothermic reaction. At this time, in order to facilitate the pressurization of the user, the detachable part 510 is detachably provided at one side of the cover parts 500 and 500 '. The detachable part 510 may be made of the same material as the cover part 500 and may be provided to be detachable from the cover part 500. That is, a cut line corresponding to the detachable part 510 is formed so that the user may detach the detachable part 510 from the cover part 500 or press a part of the detachable part 510 to pressurize and couple the cover part 500 again. .

Meanwhile, the detachable part 510 may be formed of a different material from that of the cover part 500. That is, by combining a material thinner than the cover 510 can be easily pressed by the user.

Here, the cover parts 500 and 500 'are preferably made of a material that does not easily transmit the temperature of the heat generating pack 400 to the outside, so that the temperature of the heat generating pack 400 can be maintained for a long time.

To this end, the cover 500 may be provided with a material including paper as shown in Figure 7a, or may be provided with a material containing plastic as shown in Figure 7b. When provided with a material including a paper is thick, such as corrugated cardboard is formed is uneven inside it is more preferable that the heat of the heat pack 400 is less transferred to the user. .

On the other hand, when the cover portion 500 'is made of a plastic material as shown in Figure 7b may be provided in a cup shape to accommodate the outer pack 200. And, it is more preferable for the user's food and drink to be provided with a handle portion 540 that the user can hold by hand.

On the other hand, the cover portion 500, 500 'is preferably formed to have a predetermined area on the bottom surface 520 so as to stand on a predetermined surface while receiving the outer pack 200. At this time, the bottom surface 520 is preferably provided with an absorbing member (not shown) so that the reaction liquid leaked from the heat generating pack 400 can be absorbed. Absorbents can be used such as cotton wool and tissue paper.

Here, the surfaces of the outer pack 200 and the cover part 500 may include symbols or letters 240 and 530 whose color changes depending on the temperature which is changed when the temperature is changed by the heat of the heat pack 400. have. This is desirable because it can display the best temperature that the user can drink according to the color of the symbol or text.

Here, the symbols or letters 240 and 530 may be formed by Zion inks whose color changes with temperature. At this time, after the heat generation of the heat pack 400 is changed from the initial color to the color change color, when the temperature is returned to the initial temperature is formed into a reversible type Zion ink to return to the initial color, or irreversible Zion does not return to the initial color again It can be formed with ink.

By the heating pack unit according to the second embodiment of the present invention described above, the user can indirectly grab the outer pack heated by the heat pack by the cover part, which is convenient for drinking, and by symbols and letters formed by Zion ink. You will know the optimal drinking time.

9 to 11 are cross-sectional views showing the configuration of the heat pack unit 100 ″ according to the third embodiment of the present invention. The heat pack unit 100 ″ according to the third embodiment of the present invention is provided with an outer pack 200 ′ in which food is accommodated, and an outer pack 200 ′ and heat transfer outside the outer pack 200 ′. The heat pack 400 'for heating the food contained in the pack 200', and the outer pack 200 'and the heat pack 400' to heat transfer the outer pack 200 'and the heat pack 400'. It includes a receiving cup 600 for receiving.

The outer pack 200 ′ protects food from external shocks. The configuration of the outer pack 200 'is the same as that of the outer pack 200 of the first embodiment of the present invention. The heat pack 400 'is provided outside the outer pack 200'. Since the configuration of the heat pack 400 'is also the same as that of the heat pack 400 of the first embodiment of the present invention, a detailed description thereof will be omitted. The outer pack 200 'and the heat generating pack 400' are preferably made of a material such as aluminum having a high heat transfer rate.

The receiving cup 600 is provided in a cup shape having a predetermined volume as shown in FIGS. 9 and 10. The receiving cup 600 accommodates a partial region of the outer pack 200 ′ so that the user can easily ingest food therein. One side of the main body 610 of the receiving cup 600 may be provided with a through portion 640 formed so that the user can directly heat the heat pack (400 ').

And, inside the main body 610 of the receiving cup 600, as shown in Figure 10 is provided with a heat pack support portion 630 to prevent the downward movement of the heat pack (400 '). The heat pack support part 630 is provided to protrude a predetermined length from the surface of the body 610 to stably support the heat pack 400 '.

Here, the width of the accommodating cup 600 is provided so as to correspond to the sum of the width of the outer pack (200 ') that the food is accommodated and the width of the heat pack (400') before the exothermic reaction is the outer pack (200 ') and the heat pack. (400 ') is preferable because it can be tightly pressed to increase the heat generation efficiency.

In addition, the inner surface of the receiving cup 600 is preferably provided with a far-infrared radiation material to increase the thermal efficiency of the heat generating pack (400 '). In addition, the receiving cup 600 is preferably provided with a curable material that can be used for a long time for cost reduction.

The use of the heat pack unit 100 "according to the third embodiment of the present invention having such a configuration will be described with reference to FIG. The user accommodates the outer pack 200 'and the heating pack 400' in close contact with the receiving cup 600, and the reaction liquid storage part 410 'and the heating element 420' of the heating pack 400 'are heated. The reaction liquid storage part 410 'is pressurized to cause a reaction. As a result, heat generated in the heat generating pack 400 'is transferred to the outer pack 200' and the food F received in the outer pack 200 'is heated.

The heating pack unit 100 ″ according to the third embodiment of the present invention described above accommodates various types of foods by accommodating outer packs and heat packs of different sizes in a receiving cup and heating the outer packs by mutual heat transfer. Easy to warm up and use. In addition, since the receiving cup is recyclable, it can be used repeatedly to reduce costs.

On the other hand, in the above embodiment, the reaction liquid of the heating pack 400 is accommodated in the reaction liquid bag 410 that is popped by the pressurization, but as shown in Figure 12 to be accommodated in the storage container 415 broken by pressurization It may be. The storage container 415 may be made of a material such as plastic, and the break groove 415a having a different thickness is broken by the user's pressure, and the reaction liquid therein reacts with the heating element 420.

Meanwhile, in the above embodiment, the second accommodating part 440 is manufactured in a sealed state, and is opened by the user to form the opening 443, but any part of the second accommodating part 440 during the manufacturing process is sealed. The low-temperature sealing compared to other parts may be opened by the low-temperature sealed portion by the internal pressure formed during the exothermic process. In addition, a zipper or an uneven portion may be formed in the opening 443 so as to be opened by the pressure formed during the heating process.

As described above, the heating pack unit according to the present invention can be used with confidence because the user can be directly attached to the heating pack inside and outside of the outer pack, it is indirect contact with the outer pack by the cover portion, so the heating due to hot temperature This saves you from having to wait for the pack unit to cool down.

As described above, according to the present invention, there is provided a heating pack unit that can be used by the user can be detached directly from the heat pack.

Claims (25)

In the heat pack unit, An outer pack in which food is stored; An inner pack coupled to an inner side of the outer pack to form an independent space shielded from the food, and having an opening in one region; It includes a heat pack is provided in the inner pack through the opening of the inner pack to be drawn out and withdrawn, The exothermic pack absorbs a reaction liquid storage unit in which a predetermined reaction liquid is stored, a heating element which generates heat by reacting with the reaction liquid, and absorbs the reaction liquid when the reaction liquid reacts with the heating element to delay the reaction rate. Heating pack unit comprising a member. The method of claim 1, The inner pack is a heating pack unit, characterized in that coupled along the partial region of the edge of the outer pack. The method of claim 2, The opening pack unit, characterized in that provided in the lower portion of the inner pack. The method according to any one of claims 1 to 3, The heat pack unit, characterized in that the inner pack is provided to have a smaller capacity than the outer pack. The method according to any one of claims 1 to 3, The inner pack is a heating pack unit, characterized in that it comprises a far infrared radiation material. The method of claim 1, The absorbing member is a heat pack unit, characterized in that it comprises a cotton wool. The method of claim 1, The outer pack is a heating pack unit, characterized in that the spout is provided to facilitate the user's intake of internal food in one area of the outer surface. The method of claim 1, Heating pack unit further comprises a cover portion provided to accommodate the entire outer pack. The method of claim 1, The heating pack unit, characterized in that it further comprises a cover portion provided to accommodate the outer region of the outer pack corresponding to the heat pack. The method according to claim 8 or 9, The cover unit is detachably provided at one side of the heating pack unit comprising a detachable member for exposing a portion of the outer pack to the outside. The method of claim 10, And the cover part includes a bottom surface corresponding to the opening of the inner pack and having a predetermined area. The method of claim 11, Heat pack unit, characterized in that the bottom surface is provided with an absorbing member that can absorb the reaction solution. The method according to claim 8 or 9, The heat pack unit, characterized in that the cover portion is provided with a material containing paper. The method according to claim 8 or 9, The heat pack unit, characterized in that the cover portion is provided with a material containing a plastic. The method of claim 14, The heat pack unit, characterized in that the cover portion is provided in a cup shape. The method of claim 1, Heating pack unit, characterized in that the surface of the outer pack is provided with letters and symbols that change color in accordance with the change in temperature. The method according to claim 8 or 9, Heat pack unit, characterized in that the surface of the cover portion is provided with letters and symbols that change color in response to changes in temperature. The method of claim 16, The letters and symbols are heat pack unit, characterized in that formed by the Zion ink. The method of claim 18, The letter and symbol is a heating pack unit, characterized in that formed by the reversible type Zion ink to return to the initial color when the temperature returns to its original state. The method of claim 18, The letters and symbols are heat pack unit, characterized in that formed by an irreversible type Zion ink that maintains discolored color and does not return to the initial color even when the temperature returns to its original state. In the heat pack unit, An outer pack in which food is stored; A heat pack provided to be heat-transferable to the outer pack and having a reaction liquid storage unit in which a predetermined reaction liquid is stored, and a heating element generating heat by reacting with the reaction liquid; And a receiving cup accommodating the outer pack and the heat pack such that the outer pack and the heat pack are capable of mutual heat transfer. The method of claim 21, The receiving cup is a heating pack unit, characterized in that for receiving a portion of the outer pack. The method of claim 22, Heating pack unit, characterized in that the inner side of the receiving cup is provided with a heat pack support protrusion formed to support the heat pack. The method of claim 23, wherein The receiving cup includes a bottom surface having a predetermined area, The heat pack support is characterized in that the heating pack unit is provided with a predetermined height from the bottom surface. The method of claim 21, The receiving cup is a heating pack unit, characterized in that it comprises a material that emits far infrared rays.

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