KR102349827B1 - A Portable food container for heating Instantly - Google Patents

Abstract

The present invention relates to a portable instant heating food container applied with a folding structure, which comprises: a cooking container having an open upper part to accommodate food and configured to heat the food by an external heat source; a heating container having an open upper part to accommodate a heating element and water therein, and placing the cooking container on the upper part thereof to heat the cooking container by the heating element; and a cover container having an open side surface so that the heating container can be accommodated therein, and covering the upper part of the heating container to prevent heat from leaking to the outside.

Description

{A Portable food container for heating Instantly}

The present invention relates to a portable instant heating food container to which a folding structure is applied, and more particularly, to increase the portable capacity by reducing the volume occupied by space, and to apply a folding structure that can be used as a container when heated through a heating element It relates to a portable instantaneous fever food container.

Recently, with the development of industry, life patterns are complicated and people's social activities are diversified, and there is a tendency to shorten or save the time required for all activities as much as possible.

This tendency to save time has a great impact on food culture, and instant food that can be easily cooked and eaten without spending a lot of time has already been commercialized and sold.

Food packaged in such a cup container is heated using a microwave oven or hot water, and this will be described with reference to the well-known cup noodles.

In order to cook cup noodles outdoors, heated water must be transported in a thermos bottle or heated using a gas burner with water in a coppel, so the process and portability are very inconvenient.

Korean Utility Model Publication No. 20-0197434 to solve this problem relates to a disposable heating cup ramen container, which has a double container as shown in FIG. 1 and uses the reaction heat generated during the hydration reaction of the heating element. The point of heating water by heating is presented.

However, in the case of the prior art as described above, since a space for accommodating the contents such as a heating element and food is separately provided inside the container, there is a problem in that the overall volume of the cooking container is increased.

In particular, since the conventional container has the same volume when used to heat or cook food and the volume when carried or stored, there is a problem in that the amount that can be accommodated and stored in the space for carrying the container is limited.

Korea Utility Model Publication No. 20-0197434

An object of the present invention to solve the above problems is to provide a portable instant heating food container with a folding structure that can be folded and stored to reduce the volume of the container during carrying or storage, and can be used by unfolding the container in a three-dimensional shape when in use. will do

Another object of the present invention is to provide a portable instant heating food container with a foldable structure that is easy to use outdoors since the container can be folded or unfolded with one touch along the fold line formed on the container.

Another object of the present invention is to provide a portable instant heating food container with a foldable structure that can prevent loss of a heat source generated from a heating element by stacking and combining a plurality of containers.

In order to solve the above problems, the portable instant heating food container to which the foldable structure of the present invention is applied has an upper opening to accommodate food, a cooking container formed to heat the food by an external heat source, and an upper opening It is formed so as to accommodate a heating element and water therein, and a heating container that mounts the cooking container on the upper part to heat the cooking container by the heating element, and the side is opened so that the heating container can be accommodated therein. And it is characterized in that it includes a cover container to cover the upper portion of the heating container to prevent heat from leaking to the outside.

In addition, the cooking container, the heating container, and the cover container of the portable instant heating food container to which the foldable structure of the present invention is applied are made of paper and have a plurality of fold lines to reduce the volume by folding the container when carrying it. It is characterized in that when cooking food, it is used by three-dimensionally spreading it in a rectangular shape along the fold line.

In addition, the cover container of the portable instant heating food container to which the foldable structure of the present invention is applied seals the heating container and the upper part of the cooking container so that water vapor is not discharged. It is characterized in that it is discharged.

In addition, the portable instant heating food container to which the foldable structure of the present invention is applied further includes mounting wings that protrude outward from both sides of the cooking vessel and are formed to be mounted on both sides of the heating vessel, and the cooking by the mounting wings. The lower surface of the container is characterized in that it maintains a spaced state from the bottom surface of the heating container.

In addition, the portable instant heating food container to which the foldable structure of the present invention is applied is characterized in that it further includes a handle formed on the front and rear surfaces of the heating container to hold and transport the heating container.

In addition, the cooking container and the heating container of the portable instant heating food container to which the foldable structure of the present invention is applied are assembled so that the fold lines are arranged in different directions, and thus the outer shape is prevented from being deformed along the fold lines.

In addition, the cooking container, the heating container, and the cover container of the portable instant heating food container to which the foldable structure of the present invention is applied are made of paper material, and the inner and outer surfaces prevent shape deformation due to water vapor and improve heat transfer It is characterized in that it is coated or laminated to do so.

As described above, according to the portable instant heating food container to which the foldable structure according to the present invention is applied, it can be folded and stored to reduce the volume of the container during carrying or storage, and there is an effect of being able to use the container in a three-dimensional shape when in use. .

In addition, according to the portable instant heating food container to which the foldable structure according to the present invention is applied, the container can be folded or unfolded with one touch along the folding line formed on the container, so that it is easy to use outdoors.

In addition, according to the portable instant heating food container to which the foldable structure according to the present invention is applied, there is an effect of preventing loss of the heat source generated from the heating element by stacking and combining a plurality of containers.

1 is a perspective cross-sectional view showing a conventional heating vessel.
2 is a perspective view showing a combined state of a portable instant heating food container to which a folding structure according to the present invention is applied.
3 is an assembly view showing a state in which a portable instant heating food container to which a folding structure according to the present invention is applied is assembled.
4 is a cross-sectional view showing the inside of the portable instant heating food container to which the folding structure according to the present invention is applied is assembled.
5 is a perspective view illustrating a heating container of a portable instant heating food container to which a folding structure according to the present invention is applied.
6 is a perspective view and a side view illustrating a steam discharge part of a heating container of a portable instant heating food container to which a folding structure according to the present invention is applied.
7 is a perspective view illustrating a cooking container of a portable instantaneous heating food container to which a folding structure according to the present invention is applied.
8 is a front view showing a raw material provided with a folding line to form a portable instantaneous heating food container to which a folding structure according to the present invention is applied.
9 is a front view showing a state in which both sides and lower surfaces of the raw material of the portable instant heating food container to which the foldable structure according to the present invention is applied are adhered to form a bag with an open top.
10 is a perspective view and a bottom view showing a three-dimensionally folded state of the raw material of the portable instant heating food container to which the folding structure according to the present invention is applied.
11 is a perspective view and a bottom view showing a rectangular container by folding the lower surface of the portable instant heating food container to which the folding structure according to the present invention is applied.
12 is a front view and a bottom view showing a state in which a portable instant heating food container to which a folding structure according to the present invention is applied can be folded and carried flat.

Specific features and advantages of the present invention will be described in detail below with reference to the accompanying drawings. Prior to this, when it is determined that a detailed description of a function and a configuration related to the present invention may unnecessarily obscure the gist of the present invention, a detailed description thereof will be omitted.

The present invention relates to a portable instant heating food container to which a folding structure is applied, and more particularly, to increase the portable capacity by reducing the volume occupied by space, and to apply a folding structure that can be used as a container when heated through a heating element It relates to a portable instantaneous fever food container.

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

2 is a perspective view showing a combined state of a portable instant heating food container to which a folding structure according to the present invention is applied, and FIG. 3 is an assembly view showing a state in which a portable instant heating food container to which a folding structure according to the present invention is applied is assembled. , FIG. 4 is a cross-sectional view showing the inside of the assembled portable instant heating food container to which the folding structure according to the present invention is applied.

As shown in FIGS. 2 to 4 , the portable instant heating food container to which the folding structure according to the present invention is applied has an open top to accommodate food and is a cooking container formed to heat food by an external heat source. 300 and the upper part is opened to accommodate the heating element 10 and water therein, and the cooking container 300 is mounted on the upper part to heat the cooking container 300 by the heating element 10 The heating vessel 200, the side of the heating vessel 200 is opened so that it can be accommodated therein, and covers the upper portion of the heating vessel 200 to prevent heat from leaking to the outside. characterized.

The cooking container 300 is a rectangular container with an open top so that food can be contained therein, and has a smaller size than the heating container 200 so that it can be inserted into the heating container 200 .

In addition, when the food contained therein is heated, the cooking container 300 may be separated from the heating container 200 and used as a container for the user to eat food.

The heating container 200 is a rectangular container with an open upper portion made of the same shape as the cooking container 300 , and has a size larger than that of the cooking container 300 so that the cooking container 300 can be inserted into the opened upper portion. formed large.

At this time, the heating element 10 is accommodated in the heating vessel 200, and when water is poured into the heating vessel 200, reaction heat is generated by the hydration reaction of the heating element 10 and the cooking vessel 300 can be heated. .

The cover container 100 is a rectangular container made of the same shape as the cooking container 300 and the heating container 200, and rather than the heating container 200 in order to be inserted into the open side of the heating container 200. The size is made large.

At this time, although the cover container 100 is indicated as having an open side, the upper part is actually opened like the cooking container 300 and the heating container 200, and it is used by lying down toward the side of the heating container 200. .

The cover container 100 seals the upper surfaces of the heating container 200 and the cooking container 300 to prevent the inflow of external air or the heat generated by the heating element 10 from being discharged to the outside, thereby reducing heat loss. used for

That is, by inserting the cooking vessel 300 and the heating vessel 200 into the cover vessel 100 of a rectangular shape with an open side, the opened portion is blocked, and the cooking vessel 300 is caused by the heat generated by the heating element 10 . This allows the food to be heated by heating it.

At this time, the cover container 100 seals the upper part of the heating container 200 and the cooking container 300 so that water vapor is not discharged, and when the pressure of the water vapor increases, it expands and discharges the water vapor to the outside.

Since the cover container 100 seals the upper part of the heating container 200 and the cooking container 300, the heating element 10 that generates reaction heat inside the heating container 200 heats the water to boil, and the water boils. As water vapor is generated, the internal pressure of the heating vessel 200 is increased.

As the pressure increases, the boiling point inside the heating vessel 200 increases, and the cooking vessel 300 can be heated at a high temperature, so that the food contained in the cooking vessel 300 can be heated within a short time.

In addition, when the pressure is excessively increased, the cover container 100 made of a paper material expands upward to discharge water vapor to the outside, and through this process, the internal pressure of the heating container 200 is excessively increased. can be prevented

In addition, both sides of the cooking vessel 300 further include mounting wings 310 that protrude to the outside and are formed to be mounted on both sides of the heating vessel 200, and the cooking vessel 300 by the mounting wings 310. The lower surface is characterized in that it maintains a state spaced apart from the bottom surface of the heating vessel (200).

On both sides of the cooking vessel 300, each of the mounting wings 310 protruding outwardly are formed, and when the mounting wings 310 are folded toward the outer surface of the heating vessel 200, the heating vessel 200 is placed on the upper surface of the cooking vessel 300. ) can be mounted.

As shown in FIG. 4, the lower surface of the cooking vessel 300 can be maintained spaced apart from the bottom surface of the heating vessel 200 by the mounting wings 310, and the heating element (10) is spaced apart from the heating element ( The cooking vessel 300 can be heated by the water heated from 10).

In addition, by changing the folding position of the mounting wings 310 as needed, the user can directly adjust the spacing between the lower surface of the cooking vessel 300 and the bottom surface of the heating vessel 200, so the degree of heating according to the user's taste can be adjusted.

That is, the closer to the heating element 10, the faster the cooking vessel 300 can be heated, and as the spaced apart increases, the distance from the heating element 10 decreases, so that the heat transfer decreases, so that the food can be heated at a low temperature. Therefore, it is possible to adjust the degree of heating according to the food being heated.

In addition, the cooking vessel 300 and the heating vessel 200 are assembled so that the fold lines are arranged in different directions to prevent deformation of the outer shape along the fold lines.

The cooking container 300 , the heating container 200 , and the cover container 100 are all formed with fold lines so that they can be stored in a rectangular shape as shown in FIG. 11 or folded flat as shown in FIG. 12 .

In this case, since it is distributed in a folded state in the general distribution process, the user has to use it in a rectangular shape to heat or cook food.

However, since it is maintained in a folded state for a long time, when it is three-dimensionally unfolded in a rectangular shape and then removed by an external force, the opened portion is partially folded along the folding line and can be transformed into a polygonal shape.

In order to prevent such deformation, when the cooking vessel 300 is inserted into the cover vessel 100, the directions of the fold lines of the two vessels are arranged so that they are opposite to each other and then inserted to prevent the outer shape from being deformed along the direction of the fold line. be able to

That is, when the cooking vessel 300 is inserted into the heating vessel 200, even if the cooking vessel 300 is folded in the direction of the fold line and protrudes, there is no fold line on the inner surface of the heating vessel 200, so the cooking vessel 300 is It is possible to prevent deformation, and the portion without the folding line of the heating vessel 200 is pressed in close contact with the folding line of the cooking vessel 300, so that it is prevented from protruding in the direction of the folding line of the heating vessel 200. be able to

That is, by disposing the fold lines in different directions, the container can be supported in a rectangular shape, and the cover container 100 has different directions of the fold lines when the heating container 200 is inserted therein, so the cover container ( 100) is also prevented from being folded so that it can be maintained in a rectangular shape.

In addition, the cooking vessel 300, the heating vessel 200, and the cover vessel 100 are made of a paper material, and the inner and outer surfaces are coated or laminated to prevent shape deformation due to water vapor and to improve heat transfer. characterized by having

Since the cooking container 300, the heating container 200, and the cover container 100 are made of a paper material, they can be stored by folding along the fold line or unfolding three-dimensionally.

At this time, since the paper material is vulnerable to moisture, it is desirable to prevent damage by moisture by laminating a coating agent on the inner and outer surfaces of the container to prevent damage by moisture and improve heat transfer on each inner and outer surfaces.

At this time, it may be coated or laminated using a synthetic resin material such as polyethylene (PE) or polypropylene (PP) or an eco-friendly material polylactic acid (PLA) to prevent damage due to moisture, and a heating container (200) to improve heat transfer The inner surface and the outer surface of the cooking vessel 300 may be coated or laminated with silver foil to be used.

In addition, the cooking container 300, the heating container 200, and the cover container 100 are made of a paper material and have a plurality of fold lines. It is characterized in that it is used three-dimensionally in a rectangular shape along the fold line.

Since the cooking container 300, the heating container 200, and the cover container 100 are made of paper, they can be stored by folding along a plurality of fold lines, or can be used by unfolding them in the form of a rectangular container to increase portability and usability. be able to

At this time, the cooking container 300, the heating container 200, and the cover container 100 can be folded to store the packaged instant food or the heating element 10 in a flat state, and it is stored in a flattened form, so it is portable. The castle will increase and you will be able to move around with multiple dogs.

Each container has the same shape, and details on a method of folding or unfolding through a folding line will be described later with reference to FIG. 8 .

5 is a perspective view showing the heating container 200 of the portable instant heating food container to which the folding structure according to the present invention is applied.

As shown in Figure 5, the handle ( 210) is characterized in that it further comprises.

The handle 210 is formed on the front and rear surfaces of the heating container 200 , and the user can take out the heating container 200 in a heated state from the cover container 100 using the handle 210 .

The handle 210 is formed by cutting the front and rear surfaces of the heating container 200, and one surface is connected to the heating container 200 and rotates toward the front and rear surfaces of the heating container 200 based on the connected portion to the outside. can be protruded.

At this time, the handle 210 may protrude to the outside of the heating container 200 or be inserted into the gripping groove 220 generated by cutting the handle 210 when forming the handle 210 so that the handle 210 is not exposed to the outside.

In addition, the portion where the handle 210 is rotated is rotated based on the upper surface of the gripping groove 220 as shown in FIG. 5-A, or rotated based on the lower surface of the gripping groove 220 as shown in FIG. 5-B. can

At this time, when the handle 210 is formed on the lower surface of the gripping groove 220 as shown in FIG. 5-B , the handle 210 and the gripping groove 220 are in a state in which the cooking container 300 is inserted into the heating container 200 . It is also possible to insert water into the heating vessel 200 through the.

In this case, it is preferable that the handle 210 is folded toward the center to induce water to flow toward the gripping groove 220 .

In addition, the user may transport the heating container 200 by inserting a hand into the gripping groove 220 cut to form the handle 210 .

In addition, the holding groove 220 is discharged to the outside through the holding groove 220 when water vapor is generated by the heating element 10 formed inside the heating vessel 200 to increase the internal pressure of the heating vessel 200, the heating vessel ( 200) may be prevented from expanding.

At this time, when the internal pressure of the heating vessel 200 is increased, the handle 210 is rotated to open the gripping groove 220 while being pushed out by the pressure, and as the gripping groove 220 is opened, water vapor is discharged to the outside. This can be done so that the internal pressure is kept constant.

6 is a perspective view and a side view showing the steam outlet 230 of the heating container 200 of the portable instant heating food container to which the folding structure according to the present invention is applied.

As shown in Figure 6, the front top of the heating container 200 of the portable instant heating food container to which the folding structure is applied is folded so as to protrude outward along the folding line and is inserted into the cover container 100. Generated by the heating element It is characterized in that it further includes a steam discharge unit 230 to discharge the water vapor.

The steam discharge unit 230 is formed on the top of the front surface of the heating container 200, and is formed by folding the top of the front surface of the heating container 200 to protrude outward in a triangular shape along the folding line.

At this time, since the steam discharge part 230 is in a state that protrudes to the outside than the front surface of the heating container 200, even in the state inserted into the cover container 100 of FIG. 2, the top of the front surface of the heating container 200 is exposed to the outside state, and through this, water vapor generated inside the heating vessel 200 is discharged to the outside, thereby preventing the heating vessel 200 from being expanded by pressure.

7 is a perspective view illustrating a cooking container 300 of a portable instant heating food container to which a folding structure according to the present invention is applied.

As shown in FIG. 7 , on both sides of the cooking container 300 of the portable instant heating food container to which the foldable structure according to the present invention is applied, the mounting wings protrude to the outside and are formed to be mounted on both sides of the heating container 200 . (310) is characterized in that it is formed.

The mounting wings 310 are used for the cooking vessel 300 to be mounted on the upper portion of the heating vessel 200 of FIG. 3, and the mounting wings 310 protrude from both sides of the upper surface of the cooking vessel 300, According to the user's selection, it is possible to use the folding wings 310 to be mounted on the heating vessel 200 .

In addition, as shown in Figure 5-B, the wing 310 may protrude to the outside in a state that is dug inward than the upper surface. desirable.

When the mounting wings 310 are cut inward than the upper surface of the cooking vessel 300 through the cutout 320 , the lower surface of the cooking vessel 300 becomes the heating vessel 200 when mounted on the heating vessel 200 . ), it is suitable for cooking food that is heated slowly at a low temperature because it can be spaced apart significantly from the bottom surface.

Hereinafter, the folding line for folding or unfolding the cooking container 300 , the heating container 200 , and the cover container 100 with one touch will be described in detail.

In addition, the cooking container 300, the heating container 200, and the cover container 100 are all manufactured by folding in the same way and differing only in size, so the names will be unified as containers.

8 to 12 are views sequentially illustrating a folding state and forming a container using a raw material 400 having a folding line to form a portable instantaneous heating food container to which a folding structure according to the present invention is applied.

8 to 12, the portable instant heating food container to which the foldable structure according to the present invention is applied forms a plurality of fold lines on the surface of the raw material 400 on which the surface is coated or laminated, and the container is formed using the same. characterized by forming.

A first adhesive part 410 is formed on one side of the raw material 400 , and a second adhesive part 420 is formed on the lower side. First, the raw material 400 is folded in half based on the fourth folding line 460 . After that, one side and the other side of the raw material 400 are adhered through the first adhesive part 410, and the second adhesive part 420 folded in half is bonded to each other to form the raw material 400 in the form of an envelope as shown in FIG.

Here, the first adhesive part 410 is adhered only to the position where the first adhesive line 411 is formed, and the second adhesive part 420 is adhered only to the position where the second adhesive line 421 is formed. It is formed to be foldable along the adhesive line 411 and the second adhesive line 421 .

When one side, the other side, and the lower part of the raw material 400 are combined through the first adhesive part 410 and the second adhesive part 420, the raw material 400 in the form of an envelope that can be opened as shown in FIG. 9 is formed.

In this state, when the first folding lines 430 located on both sides of the raw material 400 are pressed in the center direction of the raw material 400, the second folding lines 440 formed on both sides of the lower portions of the raw material 400 are folded together. As the raw material 400 has a three-dimensional shape as shown in FIG. 10 as shown in FIG.

That is, the raw material 400 is formed in a quadrangular shape in which the side part 403 is formed on four sides and an opening 401 is formed in the upper part, and the bottom part 402 is formed in a hexagonal shape.

At this time, the second adhesive part 420 is folded in parallel with the bottom part 402 of the raw material 400 along the second adhesive line 421 , and a triangular-shaped raw material 400 formed on both sides of the bottom part 402, respectively. is rotated along the third fold line 450 toward the center of the bottom portion 402 and then adhered to and fixed to the bottom portion 402 to complete a rectangular container as shown in FIG. 11 .

11, it can be used as a cooking container 300, a heating container 200, and a cover container 100, and when folded for portability, the fourth fold line 460 formed in the upper center of both sides of the container When folded toward the outside by pressing the sixth fold line 480 formed in the center lower part of both sides and the center of the bottom surface toward the inner side of the container, both sides are folded in a diagonal form along the fifth fold line 470. 12 will be the same.

That is, when viewed from the front as shown in FIG. 12-A, the bottom surface of the lower part is folded and inserted into the inner side, and the both sides protrude to the outer both sides, respectively, so that the opened upper part of the container can be formed flat.

12-B shows a bottom view when the container is folded, and it can be seen that the thickness is reduced as the sixth fold line 480 is inserted into the inner side of the container.

Through this, the rectangular container can be folded and stored, and food or the heating element 10 can be inserted and carried by using the opened portion in the folded state as an envelope.

In addition, in order to restore the container back to the rectangular shape, when both sides of the folded state are pressed back to the inner side, the side surface of the container is restored to the rectangular shape, and the bottom part 402 protrudes to the outside by the restored repulsive force, which is shown in Fig. 11-A It can be returned to the same form as

That is, depending on the direction in which both sides and the bottom 402 of the container are pressed, it can be a rectangular container or can be folded into a polygon to be portable.

As described above, according to the portable instant heating food container to which the foldable structure according to the present invention is applied, it can be folded and stored so that the volume of the container is reduced during carrying or storage, and can be used by unfolding the container in a three-dimensional shape when in use, and can be used in the container. The container can be folded or unfolded with one touch along the formed fold line, so it is easy to use outdoors, and there is an effect of preventing the loss of the heat source generated from the heating element by stacking and combining a plurality of containers.

As described above, the present invention has been mainly described with reference to preferred embodiments, but those of ordinary skill in the art to which the present invention pertains may vary the present invention within the scope not departing from the technical spirit and scope described in the claims of the present invention. It can be modified or modified in any way. Accordingly, the scope of the present invention should be construed by the appended claims to include examples of many such modifications.

10: heating element 100: cover container
200: heating vessel 210: handle
220: grip groove 230: steam discharge part
300: cooking vessel 310: stationary wings
320: cutout 400: raw material
401: opening 402: bottom
403: side part 410: first adhesive part
411: first adhesive line 420: second adhesive part
221: second adhesive line 430: first folding line
440: second fold line 450: third fold line
460: fourth fold line 470: fifth fold line
480: 6th fold line

Claims (7)

a cooking container having an upper opening to accommodate food and configured to heat the food by an external heat source;
a heating vessel having an open upper portion to accommodate a heating element and water therein, and heating the cooking vessel by means of the heating element by mounting the cooking vessel thereon;
and a cover container having an open side so that the heating container can be accommodated therein and covering the upper part of the heating container to prevent heat from leaking to the outside;
The front upper end of the heating container is folded so as to protrude outward along the fold line and when inserted into the cover container, a steam discharge part for discharging the water vapor generated by the heating element; characterized in that it further comprises
Portable instant heating food container with collapsible construction.
The method of claim 1,
The cooking vessel, the heating vessel, the cover vessel
It is made of paper and has a number of fold lines, so the container can be folded to reduce the volume when carrying.
When cooking food, it is characterized in that it is used by spreading three-dimensionally in a rectangular shape along the fold line.
Portable instant heating food container with collapsible construction.
The method of claim 1,
The cover container
The heating container and the upper part of the cooking container are sealed so that water vapor is not discharged, and when the pressure of the water vapor is increased, it expands and discharges the water vapor to the outside.
Portable instant heating food container with collapsible construction.
The method of claim 1,
It further includes; on both sides of the cooking vessel, the wings protrude to the outside and formed so as to be mounted on both sides of the heating vessel;
The lower surface of the cooking vessel by the moving wings is characterized in that it maintains a state spaced apart from the bottom surface of the heating vessel.
Portable instant heating food container with collapsible construction.
delete The method of claim 1,
The cooking vessel and the heating vessel are assembled so that the fold lines are arranged in different directions, characterized in that the outer shape is prevented from being deformed along the fold lines.
Portable instant heating food container with collapsible construction.
The method of claim 1,
The cooking vessel, the heating vessel, the cover vessel
It is formed of a paper material, and the inner and outer surfaces are coated or laminated to prevent shape deformation due to water vapor and to improve heat transfer.
Portable instant heating food container with collapsible construction.

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