KR101713771B1 - Exterior package for microwave for heating in boiling water - Google Patents

Abstract

The present invention relates to an outer packaging container for a microwave oven for heating hot water, and more particularly, to an outer packaging container for a microwave oven for heating hot water, It is possible to provide a functional packaging container capable of implementing a hot-water heating technique through a packaging design that fills the interior of the container.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer packaging container for a microwave oven,

The present invention relates to an outer packaging container for a microwave oven for heating hot water.

Microwave ovens are widely used in the food industry as well as at home because of the advantage of being able to process and cook food quickly and easily. It is a universal kitchen cooking appliance which shows 95% or more household penetration rate in advanced countries including Korea.

(RTE (Ready-to-eat) or RTC (Ready-to-cook)) foods in line with the trends of busy modern people's dietary habits, , And it is expected that consumption of microwave cooked foods using various packaging materials and packaging types will increase in the future.

The principle that food is cooked in a microwave oven is a microwave oven called microwave oven, which transforms electric energy into electronic energy. The molecules that are charged and charged in food rotate every time the direction of the electric field is changed. will be.

Microwave ovens should be primarily heat resistant and should be somewhat resistant to physical damage during processing, storage, distribution and cooking of food. It should also be hygienic and microbiological safety without being affected by food odor.

Packaging materials for microwave ovens should be designed to have appropriate properties in terms of thermal, physical, hygienic and microwave dimensions. When the packaged food is heated in a microwave oven, the temperature of the food is increased. Therefore, the package should have heat resistance and should not be deformed or decomposed. The choice of packaging material should be made considering that the temperature may rise to 120-160 ° C for cooking in a general microwave oven and 200 ° C or higher for an oven combined range.

The heating method of the microwave oven is cooked by the microwave, so that the permeability of the electromagnetic wave must be secured. The packaging material is classified into a permeable body, an absorber, and a reflector in terms of electromagnetic wave properties. The heating characteristics of the packaged food are different according to the properties of the electromagnetic wave. Packaging materials such as paper, synthetic resin, ceramics, and glass transmit electromagnetic waves while metal packaging materials such as aluminum block or reflect electromagnetic waves.

Therefore, in the case of packaging materials containing aluminum, electromagnetic waves can not be transmitted. Therefore, it is common to take out the materials to ceramics or glass containers and then heat them to a general range. However, modern people tend to prefer food consumption style which is easy to cook and does not require washing dishes after eating, so the production of processed foodstuffs that can be heated in a packed state is increasing.

On the other hand, salt in food ingredient is known to contribute microwave absorbing well and to increase the temperature during microwave heating. Among processed foods in Korea, sodium, natrium, noodle, porridge, rice retort for rice are high.

It is also known that the hot and cold points vary depending on the shape of the product. In a cylindrical product, the microwave is distributed in the non-uniform radial form with the highest temperature at the surface and the center portion, and the microwave is concentrated at the corner in the brick product (Campanone and Zaritzki, J. of Food Engineering 69: 359-368, 2008).

The microwave penetration depth and the thickness and size of the food affect the heating uniformity when heating the microwave oven. If the penetration depth is larger than the sample size, there is little variation in the heating rate from the food surface to the inside, resulting in uniform heating (Datta, Chemical Engineering Progress, 86, 47-53, 1990). Conversely, if the penetration depth is much smaller than the food size, the heating will be limited to the area close to the surface, resulting in non-uniform heating (Summu, Int J Food Sci and Technol, 36, 117-127, 2001).

The specific heat may be negligible in microwave heating, but may be particularly important in oils with very low dielectric constant values. In general, oil samples can be heated faster than water (Barringer et al., Fluid Mechanics and Transport Phenomena, 40 (9), 1433-1439, 1994).

Salts in food produce additional heat due to the interaction of the electrical field. This heat is due to the molecular friction of polar molecules and the increase in electrical conductivity present in the salt (Rozzi and Singh, J Food Processing and Preservation, 24, 265-273, 2000).

The prior art in which packaged retort products are directly packaged in a microwave oven without being transported into separate containers has heretofore employed a method of heating a portion of the packaging material after opening it in the case of a general pouch without a steam outlet.

However, in this case, as described above, the electromagnetic wave is overheated due to the excessive concentration of electromagnetic waves in the point where the electromagnetic wave first reaches the packaging material or the sharp point such as the corner, while the penetration of the electromagnetic wave toward the central portion of the package containing the contents is less Cooking is weakened. In order to solve this problem, if the heating time of the microwave oven is extended to sufficiently heat the central portion, the contents of the surface portion may be pressed or burned.

In order to improve this phenomenon, the steam generated in the microwave oven is heated more quickly, and when a specific pressure is reached, the portion of the package or the container where the adhesion is weak is opened and the steam is discharged, Functional packaging machines and pouches have been developed.

However, this method does not completely overcome the differences in cooking strength between the surface and the inner layer of the packaging due to the electromagnetic wave permeability or the composition or composition of the contents.

In addition, some hot and thick retort pouch packed foods are heated by a microwave oven, and the inside surface of the package is deformed or carbonized due to the hot spot of electromagnetic waves.

Some curryna rice bowls with deformation or carbonization by microwave heating are produced as a composite material containing aluminum in domestic and foreign countries. As a result, there is a difficulty in recycling packaging materials, , It is necessary to develop a new-function heat-resistant packaging material system to reduce the cost.

Especially, Korean traditional foodstuffs using spicy and strong spices are packaged in RTE or RTC form and can be easily cooked using microwave oven. Therefore, it is necessary to develop a heat resistant packaging system to increase the export of these products and expand the market. to be.

Currently, there are no products available in the domestic market that improve the heat resistance of the packaging structure and packaging materials by suppressing thermal deformation of the microwave oven and enhancing consumer convenience.

Korean Patent No. 10-1391841 Korean Patent No. 10-1129604

An object of the present invention is to provide an outer packaging container for a microwave oven capable of suppressing thermal deformation of a packaging material during heating and cooking in a microwave oven, and to provide a retort food utilizing the same.

A first aspect of the present invention is an outer packaging container for a microwave oven,

An inner packaging material in the form of a pouch having contents therein; And a receiving portion capable of receiving water;

When used in a microwave oven, from the top of the outer packaging container to the inner packaging material; And an upper injection unit for injecting water; And

The present invention provides an outer packaging container for a microwave oven which is characterized in that it has a critical hypodermic line or a manual for ensuring upstanding during use of a microwave oven when water is filled up to a predetermined height of the upper part of the contents.

A second aspect of the present invention is a retort food for cooking by heating with an electromagnetic wave,

An inner packaging material in the form of a pouch having contents therein; And an outer packaging container,

Wherein the outer packaging container comprises a pouch-shaped inner packaging material having contents therein; And a receiving portion capable of receiving water; And the inner packaging material from the upper part of the outer packaging container when used in a microwave oven; And an upper feed portion for feeding water into the retort food.

Hereinafter, the present invention will be described in detail.

Problems in the case where the conventional packaged retort product is directly heated in a microwave oven without being transferred to a separate container is not uniform in heat distribution, resulting in a hot spot, a cold spot, or a run-away phenomenon , The heating of the food may be uneven, resulting in deterioration of quality and taste, or deformation of the packaging material.

Among the microwave cooked foods, various rice bowl sauces such as curry are frequently heated in packaging. Among the products containing some spicy spices, deformation or carbonization of the packaging material occurs in microwave cooking (FIG. 1). Therefore, it is necessary to solve the consumer's claim by identifying the interaction between the food ingredient, the packaging material and the electromagnetic wave to prevent the deformation and carbonization of the packaging material.

In order to solve the thermal deformation problem of packaging material due to the local temperature rise in the packaging material, the present invention suggests a method of preventing heat deformation by blocking the oxygen and water vapor from the food or including the part where steam can be discharged, .

Particularly, in the case of a food having a high viscosity, when the microwave is heated, it is locally overheated, and when the contents are boiled and adhered to the inner surface of the package, the electromagnetic wave is concentrated on the inner portion of the package, The present invention attempts to solve this problem.

Generally, hot spots tend to occur more severely in the form of a package having a folded portion such as a standing pouch than a tray-shaped packaging container. There is less overheating in the contents than in the upper part of the liquid except for some standing pouch corners and the folded part of the side sealing part. When the packaged food contents are uniformly heated uniformly without being locally overheated, the sensory tastes such as taste, color, and flavor of the contents are enhanced.

In view of the above, the present invention has been made in view of the fact that, in the case of products having a high viscosity, the penetration depth of the electromagnetic wave is less than 1 cm, so that before the electromagnetic wave reaches the inside of the package, The present invention can be applied to an outer packaging container for a microwave oven capable of exerting a heating effect by the electromagnetic wave to prevent local overheating phenomenon by allowing the filled water to be heated inside the structure forming the receiving portion of the microwave oven, .

As described above, the outer packaging container for a microwave oven capable of exerting a heating effect by the electromagnetic wave according to the present invention

An inner packaging material in the form of a pouch having contents therein; And a receiving portion capable of receiving water;

The method of claim 1, further comprising: And an upper injection unit for injecting water; And

A critical threshold line or manual may be provided to ensure uprightness during use of the microwave oven when filling up to the upper end of the contents containing contents.

In addition, as described above, the retort food for hot water-heated cooking by electromagnetic waves according to the present invention,

An inner packaging material in the form of a pouch having contents therein; And an outer packaging container,

Wherein the outer packaging container comprises a pouch-shaped inner packaging material having contents therein; And a receiving portion capable of receiving water; And

The method of claim 1, further comprising: And an upper injection section for injecting water.

In the present invention, when a consumer heats a product in a microwave oven, the product is marked on the outer packaging container so as to fill water up to the liquid level that contains the contents in the pouch. At this time, when filling water up to a certain height of the upper part of the contents, it should be written on the packaging material so as to fill up to the critical liquid level which can guarantee uprightness during use of the microwave oven, or the manual should be provided.

According to the present invention, by designing the outer packaging container in a state that electromagnetic waves are transferred from the outer packaging container to the contents and the water is filled up to a predetermined height of the upper part of the contents, the water contained in the outer packaging container is heated first, The temperature rise of the portion where the deformation of the packaging material can occur can be made slowly by the heating process of the water (Figs. 2 to 4).

The receiving portion of the outer packaging container may be formed of an electromagnetic wave transmitting material, and may heat the contents contained in the outer packaging container by heating the contents.

The receiving portion of the outer packaging container may be formed of a structure or material capable of ensuring upstanding during use of the microwave oven when filling a liquid containing water up to the critical liquid hypocrite. For example, the receiving portion of the outer packaging container may include a corrugated cardboard; A form of lamination of cardboard or cardboard and synthetic resin film; Or a synthetic resin film (Fig. 2).

The structure forming the receiving portion of the outer packaging container may be a structure in the form of a corrugated, irregular, or embossed structure capable of floating water.

The bone structure may be an A-bone, a B-bone, a C-bone, an E-bone, or a combination thereof.

The term "paperboard" used in the present invention is defined as the concept of rigid paper, and may be defined as paper of 250 g / m 2 or more in weight by definition of the International Standards Organization.

The cardboard may be single-ply or multi-ply. The simplest form of cardboard is a single ply thick paper. In order to protect the product, the cardboard must be able to maintain proper strength and be capable of printing. Manila lined board, which is composed of wood pulp, recycled pulp paper in the center layer, recycled pulp in the inner layer and bleached chemical pulp in the surface layer, is most commonly used for packaging of confectionery and dried food . In addition, there are white board made of bleached chemical pulp and recycled pulp in four or more layers, yellow board made from rice straw pulp, and chip board using only highland pulp. Typical multi-layer cartons consist of mechanical pulp and wood pulp. The top liner is made of bleached chemical pulp and the other layer is made of recycled or low quality pulp. In addition, it may be coated or laminated with a plastic film, wax, or the like to improve the barrier property.

The term "corrugated cardboard " used in the present invention can refer to a cardboard formed by adhering a corrugating medium of a corrugated medium to a liner as an adhesive.

Corrugated cardboard has the characteristic of providing a high compressive strength while using a relatively small weight of material. The most commonly used papers are unbleached kraft paper with a weight of 205g / ㎡. In case of heavy paper packaging, the pulp obtained from waste paper is combined with kraft pulp and made into multiple papers in paper machine. The weight of the corrugated cardboard is 127 g / m 2 in most cases, but 161 g / m 2 or 205 / g 2 m is used for packing heavy materials. Since the compressive strength of the corrugated cardboard is more affected by the weight of the corrugated cardboard than the weight of the cardboard, a heavy corrugated cardboard is used for special purposes.

Carton and corrugate are combined in various ways to form corrugated cardboard. The simplest is a single face board with one layer of corrugated paper on one side of the paperboard. Single-sided corrugated cardboard is mainly used as a cushioning material to protect other packaging containers during transportation since it has only a two-dimensional planar strength. It is called a single wall board and has a three-dimensional strength. Double-sided corrugated cardboard is a standard corrugated cardboard used in corrugated boxes. In addition, double-sided corrugated cardboard, double-sided corrugated cardboard, and triple-sided corrugated cardboard. Usually the direction of the bone is vertical and this gives high compressive strength.

The type of flute is divided into A, B, C, and E as shown in Table 1 according to the number of bones, and the greater the number of bones, the greater the compressive strength. In Korea, most of the production of A-bone is found. Double-sided corrugated cardboard is formed as A, B, C, and E corrugated, and double-sided corrugated cardboard has many combinations of AB, CB, AA, and AC. Triple double sided corrugated board is produced mostly in AAB, CCB, BAE structure.

The thickness of one surface of the receiving portion of the outer packaging container may be 2 mm to 1 cm.

The inside of the receiving portion of the outer packaging container may have a structure or a volume capable of reducing the contact area with the inner packaging material.

The upper loading portion of the outer packaging container may be in the form of an opening without a cover, or may be configured to be removable and removable. That is, the upper charging unit may include an inner packaging material when used for a microwave oven; And may be open to enter water or open to use immediately prior to use. The upper charging part may be designed to transmit electromagnetic waves to the contents from the upper part of the outer packaging container when used in a microwave oven.

The outer surface of the outer packaging container may be joined with a material capable of maintaining the shape stability by moisture, or may be water repellent or waterproof. Specifically, in the case of an outer packaging container having an outer surface of a paper material such as corrugated cardboard or cardboard, the outer surface may be subjected to a synthetic resin film bonding treatment or water repellent or waterproof treatment so that the shape stability can be maintained by moisture.

The inner surface of the outer packaging container is not water repellent / waterproofed so that water can enter into the structure forming the accommodating portion, or when holes are formed at a certain interval and size in the case of water repellent / waterproof treatment or synthetic resin material bonding, The filled water can be designed to easily permeate into the inside of the structure forming the receiving portion.

When drilling a hole in the inner surface of the outer packaging container, it may be processed only from the bottom of the outer packaging container to the upper end portion of the liquid line filled with the contents. These heights can be adjusted differently depending on various factors such as the type of contents and the heating method, but they must be designed so that the outer packaging container does not lose its center by filling with too much water.

Since the retort food for heating cooked by electromagnetic waves has many kinds to be stored for a long period of time, the inner packaging material of the pouch type having the contents should be excellent in the barrier property, and the physical properties such as tensile strength, impact strength, It may be a multi-layer material in order to have properties.

Examples of the inner packaging material for retort food for cooking cooked by electromagnetic waves are basically the sealing layer of polyethylene terephthalate (PET) or nylon (PA) with a seal of unleaded polypropylene (CPP) or high density polyethylene (HDPE) And a high-order fault layer such as aluminum, ethylene vinyl alcohol (EVOH), aluminum oxide (AlOx) silica oxide (SiOx), polyvinylidene chloride (PVDC) or polyvinyl alcohol (PVOH) .

The present invention provides a functional packaging container capable of realizing a hot water heating technique through packing design in which water is filled in a packaging material to prevent deformation and carbonization of the packaging material due to non-uniform heating and local overheating phenomenon as a problem in heating a microwave oven of packaged food can do. The present invention can sufficiently heat the contents located in the inner central portion of the packaging material through the method of heating the contents again by heating the water by heating the electromagnetic waves of the microwave oven, It is possible to overcome the disadvantage that the inner part of the packaging material is pressed or burned due to the concentrated superheating phenomenon of the electromagnetic wave. Further, since the contents are uniformly heated through the heating method and the packaging system, the sensory quality such as taste, smell, color and texture can be improved as compared with the simple heating method of the conventional microwave oven.

FIG. 1 shows the result of investigating the deformation and carbonization phenomenon of the packaging material in a conventional direct microwave heating.
FIG. 2 is a schematic conceptual diagram of an outer packaging container for a microwave oven, which can exert the effect of heating by the electromagnetic wave according to an embodiment of the present invention.
FIG. 3 is a schematic conceptual view of an outer packaging container for a microwave oven, which can exert the effect of heating by the electromagnetic wave according to another embodiment of the present invention.
4 is a conceptual view schematically showing a state in which a pouch-shaped inner packaging material having contents is accommodated in an outer packaging container for a microwave oven according to an embodiment of the present invention.
Figure 5 shows the type of corrugated cardboard box as an example of the form of the outer packaging container.
FIG. 6A is an exploded view showing an unfolded outer packaging container as an outer packaging container for a microwave oven according to an embodiment of the present invention, and FIG. 6B is a view of the inner packaging material in the form of a pouch.
FIG. 7A is an exploded view showing a state in which an outer packaging container with a cover is opened, and FIG. 7B is a view of an inner packaging material in the form of a pouch, according to another embodiment of the present invention.
8 is a result of examining whether or not the packaging material is deformed when the microwave oven is cooked according to whether or not the outer packaging container according to the present invention is used.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

Hereinafter, a configuration of an outer packaging container for a microwave oven capable of exerting a heating effect by a microwave according to an embodiment of the present invention will be described.

FIG. 2 is a schematic conceptual diagram of an outer packaging container for a microwave oven, which can exert the effect of heating by the electromagnetic wave according to an embodiment of the present invention.

FIG. 3 is a schematic conceptual view of an outer packaging container for a microwave oven, which can exert the effect of heating by the electromagnetic wave according to another embodiment of the present invention.

4 is a conceptual view schematically showing a state in which a pouch-shaped inner packaging material having contents is accommodated in an outer packaging container for a microwave oven according to an embodiment of the present invention.

2 to 4, an outer packaging container for a microwave oven according to an embodiment of the present invention includes a pouch-shaped inner packaging material having contents therein; And a receiving portion (1) capable of receiving water;

The method of claim 1, further comprising: And an upper charging part (2, 2 ') for charging water; And

(3, 3 ') or instructions that can ensure uprightness during use of the microwave oven when filling up to the upper end of the contents.

As shown in FIG. 2, the upper charging part 2 is formed in a state in which the upper part of the upper charging part 2 is not provided with a lid so that the user can smoothly pour water, or when the upper charging part 2 is cut as shown in FIG. 3, . In other words, in the case of FIG. 3, a portion of the upper cover may be cut off and removed before the inner packaging material and water are introduced by having a perforated line 6 'thereon.

As described above, the structure forming the receiving portion 1 of the outer packaging container may be a structure in the form of a corrugated, irregular, or embossed structure capable of floating in water.

In one embodiment, the structure forming the receiving portion of the outer packaging container, as shown in Figs. 2 and 4, may be designed to have a corrugated cardboard structure having a trough 4 shape. In the present invention, water may be poured into the receiving portion to allow the corrugated cardboard portion to be drained through the hole formed in the side face, or water may be poured into the corrugated portion of the corrugated cardboard itself constituting the receiving portion. In this case, when water is directly poured into the corrugated part of the corrugated cardboard itself, the thickness (H in FIG. 2) of one side of the receiving part, that is, the thickness of the corrugated part can be adjusted to be suitable for pouring water.

Since the amount of water to be cooked is different depending on the cooking time, the bone structure may be selected from the A bone, the B bone, the C bone, the E bone, or a combination thereof. In addition, a film coating may be used on the outer surface of the outer packaging container so that water does not escape. Any type of film can be used as long as it has a melting point of 100 ° C or more, which is the boiling point of water. For example, the type of film used in the coating may be polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), and the like, but is not limited thereto.

Since the shape stability of the outer packaging container is important, the synthetic resin film that can be used in the receiving portion of the outer packaging container may be made of polyvinyl chloride (PVC), PET, or polystyrene (PS).

The consumer inserts the pouch-shaped inner packaging material 5 having the contents to be heated into the receiving part of the outer packaging container having the above-described material and structure as shown in Fig. 4, Sufficient water is poured to the subcritical line below the critical fluid level to ensure uprightness, then placed in a microwave oven and heated to cook.

When cooking is performed in the microwave oven using the outer packaging container having the effect of heating the hot water described above, all the electromagnetic waves coming from the front / rear / left / right / bottom except for the upper part do not directly heat the contents in the pouch, The filled water is first heated inside the container housing part and / or the container housing part of the outer packaging container. As the temperature of the water rises, the content in the pouch is heated, So that the heat is uniformly heated as a whole.

The penetration depth of the electromagnetic wave depends on the composition, viscosity, and salinity of the packaged contents, but may be in the range of about 0.5 cm to 1 cm for general microwave cooked foods.

The thickness of one surface of the receiving portion of the outer packaging container (H in Fig. 2), that is, the thickness of a section from one point on the inner surface of the receiving portion to the corresponding outer surface can be determined in consideration of the depth of penetration of electromagnetic waves. Specifically, the thickness of one side of the receiving portion of the outer packaging container may be at least 2 mm, for example, 5 mm or more. The thicker the thickness, the more stable it will be. Accordingly, the thickness of one surface of the receiving portion of the outer packaging container may be, for example, 2 mm to 1 cm.

As mentioned above, the line filling the outer packaging vessel with water should be higher than the hypocrite of the contents of the pouch, although it will vary with the viscosity of the contents, but may be at least 0.2 cm. Water may be filled up to the upper end of the outer packaging container, but it is desirable to fill the upper part of the contents with a viewpoint of shortening the heating time and considering the amount of moisture evaporated or absorbed by the packaging material during heating. However, shall. That is, water can be filled up to below the critical hypocycline to ensure uprightness.

The inner surface of the outer packaging container can be punched at a predetermined distance in the inner surface of the outer packaging container so that water can be quickly inserted into the structure forming the receiving portion. This may be effective in delaying excessive heating as the water fills the interior of the structure forming the containment much faster than without holes.

The outer surface of the outer packaging container may be bonded with a water-resistant and / or heat-resistant film, and an oil-resistant paper, a glasin paper or a sulfur paper may be bonded, or a water-repellent coating agent may be treated.

The outer packaging container should be designed to have a sufficient compressive strength so that when the water is filled, the water penetrates into the structure forming the receiving portion and the strength is lowered, there is no collapse or collapse.

In one embodiment, the structure forming the receptacle of the outer packaging container is a structure in the form of a bone in which water can be drained, for example, corrugated cardboard.

As described above, the corrugated cardboard used may be an A-bone, a B-bone, a C-bone, an E-bone, or a combination thereof. Generally, the height of the bone is high And the shape of the A-valley having a high flat pressure may be preferable.

The form of the outer packaging container includes any form of containing the inner packaging in the form of a pouch. That is, the bottom surface may be a closed sleeve type, a box type, a cover type, or a cake box type. For example, A-1 in a corrugated box. A-5, B-1, C-1, D-1 and D-3 are all possible (FIG.

The size of the outer packaging container is an inner packaging material in the form of a pouch; And that water can be received and accommodated in the microwave oven to ensure upright stability when cooked in a microwave oven.

When the water in the receiving part of the outer packaging container is less water or the inner packaging material in the form of pouch is in close contact with the outer packaging container, the electromagnetic wave is more concentrated and heated than the other part, The design of the outer packaging container is designed so that the inner packaging material in the form of a pouch does not contact the inner wall of the outer packaging container when possible.

6A is an exploded view showing a state in which an outer packaging container without a cover is unfolded as an outer packaging container for a microwave oven according to an embodiment of the present invention, to be. 6A, the outer packaging container according to an embodiment of the present invention may have a size of 146 mm in height, 150 mm in width, and 33 mm in bottom thickness, but is not limited thereto. 6B, the inner packaging material may have a size of 140 mm in height, 140 mm in width and 40 mm in bottom gusset (height of bottom recessed portion) in one embodiment, It is not.

7A is an exploded view showing an outer packaging container for a microwave oven according to another embodiment of the present invention, in which the outer packaging container in the form of a cover is unfolded. FIG. 7B is an exploded perspective view of the outer packaging container for a microwave oven according to another embodiment of the present invention. FIG. As can be seen from FIG. 7A, the outer packaging container according to an embodiment of the present invention may have a size of 146 mm in height, 150 mm in width, and 33 mm in bottom thickness, but is not limited thereto. 7B, the inner packaging material may have a size of 140 mm in height, 140 mm in width and 40 mm in bottom gusset (height of bottom recessed portion) in one embodiment, It is not.

Using the outer packaging container according to one embodiment of the present invention, the food packaged in a sauce or the like is heated to a microwave oven (700 W standard). When cooked, the contents contained in the pouch- It is possible to reach a temperature of about 60-85 ° C suitable for edible use. The heating cooking time can be changed depending on the type and amount of microwave oven output and contents.

Hereinafter, the outer packaging container for a microwave oven of the present invention and the method for heating and cooking the contents of the inner packaging material using the same will be described in detail with reference to specific embodiments. However, these examples are for illustrative purposes only, and the scope of the present invention is not limited to these examples.

Example  1: Manufacture of outer packaging container for microwave oven according to the present invention

An outer packaging container for a microwave oven according to an embodiment of the present invention was manufactured using the developed view as shown in Fig.

FIG. 8 shows a state (a) of the outer packaging container for the microwave oven and a state (b) of receiving the inner packaging material in the form of a pouch having the contents in the receiving portion of the outer packaging container for the microwave oven.

Experimental Example  1: Deformation and carbonization of packaging material heated by microwave oven

(CJ CheilJedang, Korea), which is a commercially available product with contents in a pouch-type inner packaging material, which is a packing material made of glycol-polyethylene terephthalate (G-PET), PET / PET and retortable cast polypropylene (RCPP) Was heated and cooked in a microwave oven at 700 W for 2 minutes to investigate surface deformation and carbonization of the inner packaging material.

The results are shown in Fig.

It can be seen from FIG. 1A that after the contents have been drawn out, the inner surface of the packaging material (the inner surface) is burned to the center of the boundary line (dotted line). Also, FIG. 1B shows that the inner surface of the package is strongly pressed while scraping the contents, and when the contents are scratched, it is scratched but peeled to vinyl.

Experimental Example  2: Investigating whether or not the packaging material is deformed when the microwave oven is cooked according to whether or not the outer packaging container according to the present invention is used

(CJ Cheiljedang Co., Ltd., Korea), which is a commercially available product having contents in a pouch-type inner packaging material having a packing material of G-PET / PET / PET / RCPP, The container was filled with water, filled with water to the critical liquid level, and then heated and cooked in a microwave oven at 700 W for 2 minutes to investigate surface deformation and carbonization of the inner packaging material. In addition, as a control, the outer packaging containers prepared in Example 1 were not used and the same commercially available products were used to cook the microwave oven under the same conditions. In the above, the content of the commercial product heated and cooked was taken out, rinsed with water, and then examined for deformation of the inner packaging material.

The results are shown in Fig.

8A, it can be seen that the inner surface (inner surface) of the inner packaging material, which is cooked by microwave heating without using the outer packaging container according to the present invention, is severely deformed around the boundary line (solid line). Also, it can be seen from FIG. 8B that the inner surface (inner surface) of the inner wrapping material which is cooked by microwave cooking using the outer packaging container according to the present invention is not deformed.

1: receiving portion 2, 2 ': upper input portion
3, 3 ': Critical hypothesis 4: Goal
5: inner packaging material 6 ': perforated line

Claims (11)

1. An outer packaging container for a microwave oven,
An inner packaging material in the form of a pouch having contents therein; And a receiving portion capable of receiving water;
The method of claim 1, further comprising: And an upper injection unit for injecting water; And
It is characterized by having a critical threshold line or manual that can ensure uprightness during use of the microwave oven when filling up the contents with the water up to a certain height.
The inner surface of the outer packaging container is not water repellent / waterproofed so that water can enter into the structure forming the accommodating portion, or when holes are formed at a certain interval and size in the case of water repellent / waterproof treatment or synthetic resin material bonding, Characterized in that the filled water is designed to be easily permeable to the interior of the structure forming the receiving portion.
The outer packaging container for a microwave oven according to claim 1, wherein the receiving portion of the outer packaging container is formed of an electromagnetic wave transmitting material and is capable of heating the contents by heating the water contained in the outer packaging container.
The outer packaging container for a microwave oven according to claim 1, wherein the receiving portion of the outer packaging container is formed of a structure or material capable of ensuring upstanding during use of the microwave oven when the water containing liquid is filled up to the critical liquid level.
The outer packaging container for a microwave oven according to claim 1, wherein the structure forming the receiving portion of the outer packaging container is a structure in the form of a corrugated, irregular, or embossed structure capable of damping water.
delete The outer packaging container for a microwave oven according to claim 1, wherein a thickness of one surface of the receiving portion of the outer packaging container is 2 mm to 1 cm.
delete [2] The outer packaging container for a microwave oven according to claim 1, wherein the outer surface of the outer packaging container is bonded, water-repellent, or waterproof to a material that can maintain the shape stability by moisture.
delete BACKGROUND ART As a retort food for heat-cooking with heating by electromagnetic waves,
An inner packaging material in the form of a pouch having contents therein; And an outer packaging container,
Wherein the outer packaging container comprises a pouch-shaped inner packaging material having contents therein; And a receiving portion capable of receiving water; And
The method of claim 1, further comprising: And an upper injection part for injecting water,
The inner surface of the outer packaging container is not water repellent / waterproofed to allow water to enter into the structure forming the accommodating portion, or holes are formed at regular intervals and sizes when water repellent / waterproofing or synthetic resin materials are bonded, Characterized in that the filled water is designed to be easily permeable to the interior of the structure forming the receptacle.
The retort food according to claim 10, wherein the outer packaging container is provided with a critical hypodermic line or a manual that can ensure uprightness during use of the microwave oven when water is filled up to a predetermined height of the upper part of the contents.

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