Food packaging container

Abstract

The present invention relates to a food packaging container and provides a food packaging container manufactured from a paper-based material, enabling easy separation and disposal. The food packaging container comprises: an inner container unit in which a space for accommodating food is formed; a bottom surface portion having an upper surface supporting the bottom surface of the inner container unit; side wall portions, each having a lower end connected to the bottom surface portion and supporting the respective side surface of the inner container unit; and wing portions, each having one edge connected to the upper end of the respective side wall portion and having an upper surface to which the bottom surface of an inner frame portion of the inner container unit is bonded, wherein the inner container unit is made of a plastic material, the bottom surface portion, the side wall portions, and the wing portions are made of a paper material, and a press line is formed on at least one of boundary lines of the bottom surface portion, the side wall portions, and the wing portions.

Description

Food packaging containers

[0001] This application claims the benefit of priority from Korean Patent Application No. 10-2024-0115094, filed on August 27, 2024, the entire disclosure of which is incorporated herein by reference.

[0002] The present invention relates to a food packaging container, and more particularly, to a food packaging container manufactured from paper material and easy to separate and dispose of.

[0003] Containers, which are mainly used as packaging materials for food packaging, have the function of protecting the food from spoilage or rancidity of the contents and maintaining its appearance, and provide convenience for consumers to eat right away by allowing easy cooking using microwave ovens, etc., and quality improvement by utilizing steam exhaust structures, etc.

[0004] Currently, most food packaging containers are primarily made of plastic (PP, polypropylene). Despite being made of a single material, they are not recyclable and are discarded due to the risk of contamination from the contents. Furthermore, since these containers are difficult to print on, separate packaging materials (sleeves, boxes, labels, lids, etc.) are used, generating unnecessary packaging waste.

[0005] Accordingly, paper containers are being used. These containers are made by bonding paper and film to block oxygen and moisture. Compared to existing 100% plastic containers, these paper-and-film containers can dramatically reduce plastic usage. Furthermore, users can separate and dispose of the film and paper after use, which can be contaminated by the contents, making the paper recyclable, making them environmentally friendly.

[0006] However, conventional containers made of paper and film are highly likely to lose strength and have poor adhesion to the inner film when exposed to moisture and water from the external environment due to the nature of the paper material, which may cause quality problems such as deformation and warping.

[0007] To solve the problem of improving the strength of paper like this, high basis weight (300 g / m) 2 It requires the use of more packaging materials, such as using paper of the above type or a process of combining two sheets of paper.

[0008] In addition, depending on the adhesive state of the film, paper, and film, users may feel inconvenienced in separating and disposing of the waste, which may reduce the effectiveness of separating and disposing of waste for recycling.

[0009] The present invention relates to a food packaging container, and provides a food packaging container made of paper material as a base and easy to separate and discharge.

[0010] The technical problems to be solved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0011] The present invention is to solve the above-mentioned problem,

[0012] An internal container unit having a food storage space formed therein;

[0013] A bottom surface having an upper surface that supports the bottom surface of the inner container unit;

[0014] A side wall portion having a lower portion connected to the base portion and supporting a side surface of the inner container unit; and

[0015] A wing part having one edge connected to the upper part of the side wall part and having an upper surface to which the lower surface of the inner frame part of the inner container unit is bonded,

[0016] The above inner container unit is made of plastic material,

[0017] The above-mentioned bottom portion, the side wall portion and the wing portion are made of paper material,

[0018] A food packaging container is provided in which a pressing line is formed on at least one of the boundaries of the bottom portion, the side wall portion, and the wing portion.

[0019] According to one aspect, the bottom portion, the side wall portion, and the wing portion may be formed as one body, and the side wall portion may be provided in plurality, and the wing portion may be provided in plurality.

[0020] According to one aspect, the lower surface is provided in a plane shape perpendicular to the up-down direction,

[0021] The above side wall portion comprises a first side wall portion having a lower portion connected to the bottom portion and having a horizontal plane shape with respect to a first direction perpendicular to the up-down direction;

[0022] A second side wall portion having a lower portion connected to the bottom portion and formed in a horizontal plane shape with respect to the first direction and facing the first side wall portion in a second direction perpendicular to the up-down direction and the first direction,

[0023] A third side wall portion having a lower portion connected to the bottom portion and having a plane shape that is horizontal to the second direction;

[0024] The lower part is connected to the bottom part and has a plane shape that is horizontal to the second direction, and includes a fourth side wall part that faces the third side wall part and is spaced apart from the first direction,

[0025] The above-mentioned bottom portion, the first side wall portion, the second side wall portion, the third side wall portion and the fourth side wall portion are formed as one body,

[0026] A pressing line may be formed at the boundary line of the above-mentioned bottom portion, the first side wall portion, the second side wall portion, the third side wall portion, and the fourth side wall portion.

[0027] According to one aspect, the wing portion,

[0028] A first wing portion and a second wing portion are provided in a plane shape perpendicular to the vertical direction and extend in the first direction,

[0029] It includes a third wing part and a fourth wing part that are provided in a plane shape perpendicular to the vertical direction and extend in the second direction,

[0030] The first wing portion is connected to the upper end of the first side wall portion at one edge thereof and is connected as one body with the first side wall portion.

[0031] The second wing portion is connected to the upper end of the second side wall portion at one edge thereof and is connected as one body with the second side wall portion.

[0032] The third wing portion is connected to the upper end of the third side wall portion at one edge thereof and is connected as one body with the third side wall portion.

[0033] The fourth wing portion is connected to the upper end of the fourth side wall portion at one edge thereof and is connected as one body with the fourth side wall portion.

[0034] A pressing line may be formed at a boundary line between the first wing portion and the first side wall portion, a boundary line between the second wing portion and the second side wall portion, a boundary line between the third wing portion and the third side wall portion, and a boundary line between the fourth wing portion and the fourth side wall portion.

[0035] According to one aspect, the lengths of the first wing portion and the second wing portion in the first direction are formed to be longer than the lengths of the first side wall portion and the second side wall portion in the first direction,

[0036] The length of the third wing portion and the fourth wing portion in the second direction is formed to be equal to or shorter than the length of the third side wall portion and the fourth side wall portion in the second direction,

[0037] The centers of the first wing portion and the first side wall portion coincide in the first direction,

[0038] The first wing portion may be formed with a pair of handle-type pressing lines extending in a second direction to enable a region protruding further than the first side wall portion in the first direction to be foldable.

[0039] According to one aspect, the wing portion,

[0040] A fifth wing part and a sixth wing part are provided in a plane shape perpendicular to the vertical direction and extend in the first direction,

[0041] It further includes a seventh wing part and an eighth wing part that are provided in a plane shape perpendicular to the vertical direction and extend in the second direction,

[0042] The fifth wing part is laminated so that its upper surface faces the first wing part and the lower surface of the first wing part,

[0043] The sixth wing part is laminated so that its upper surface faces the second wing part and the lower surface of the second wing part,

[0044] The above seventh wing part is laminated so that the upper surface faces the third wing part and the lower surface of the third wing part,

[0045] The above eighth wing part is laminated so that the upper surface faces the fourth wing part and the lower surface of the fourth wing part,

[0046] The first wing part and the fifth wing part are formed as one body, and the boundary line of the first wing part and the fifth wing part is formed by folding by a pressing line.

[0047] The second wing part and the sixth wing part are formed as one body, and the boundary line of the second wing part and the sixth wing part is formed by folding by a pressing line.

[0048] The third wing part and the seventh wing part are formed as one body, and the boundary line of the third wing part and the seventh wing part is formed by folding by a pressing line.

[0049] The fourth wing part and the eighth wing part may be formed as one body, and the boundary line between the fourth wing part and the eighth wing part may be formed by folding by a pressing line.

[0050] According to one embodiment, the side wall portion,

[0051] A fifth side wall portion and a sixth side wall portion provided in a horizontal plane shape with respect to the first direction,

[0052] Further comprising a seventh side wall portion and an eighth side wall portion provided in a horizontal plane shape with respect to the second direction,

[0053] The fifth side wall portion is connected to the fifth wing portion at its upper end and is connected as one body with the fifth wing portion.

[0054] The sixth side wall portion is connected at the upper end to the sixth wing portion and is connected as one body with the sixth wing portion.

[0055] The seventh side wall portion is connected at the upper end to the seventh wing portion and is connected as one body with the seventh wing portion.

[0056] The above eighth side wall portion is connected at the upper end to the eighth wing portion and is connected as one body with the eighth wing portion.

[0057] The first side wall portion and the fifth side wall portion are in close contact with each other,

[0058] The second side wall portion and the sixth side wall portion are in close contact with each other,

[0059] The third side wall portion and the seventh side wall portion are in close contact with each other,

[0060] The fourth side wall portion and the eighth side wall portion are in close contact with each other,

[0061] The boundary line between the fifth wing portion and the fifth side wall portion, the boundary line between the sixth wing portion and the sixth side wall portion, the boundary line between the seventh wing portion and the seventh side wall portion, and the boundary line between the eighth wing portion and the eighth side wall portion may be formed as a line of weakness.

[0062] In one aspect, the above-mentioned weak line may be formed by cutting off a portion of the thickness of the paper or the length of the border line.

[0063] According to one aspect, the length of the first wing portion and the fifth wing portion in the first direction is formed to be longer than the length of the first side wall portion in the first direction,

[0064] The first wing portion and the fifth wing portion are formed with the same length in the first direction,

[0065] The boundary line between the first wing part and the fifth wing part is formed as a pressing line from the center in the first direction to the length in the first direction of the side wall part, and a part of the side wall part that protrudes more than the length in the first direction is formed as a cutting line.

[0066] The fifth wing portion may be formed with a pair of handle pressing lines extending in the second direction from the starting point of the cut line at both ends.

[0067] According to one aspect, the material of the inner container unit includes at least one of polypropylene (PP), polyethylene terephthalate (PET), and ethylene-vinyl alcohol copolymer (EVOH).

[0068] The thickness of the above inner container unit may be formed to be 0.1 mm or more.

[0069] According to one aspect, the paper material of the bottom portion, the side wall portion, and the wing portion may include at least one of SBS, FBB, and white paperboard.

[0070] According to one aspect, the inner container unit,

[0071] A food receiving section in which the food receiving space is formed inside,

[0072] Including the inner frame part coupled to the upper part of the food receiving part,

[0073] The above inner frame portion is formed in a closed loop shape,

[0074] The inner periphery of the above inner frame part is connected to the upper part of the above food receiving part,

[0075] The inner frame portion may be formed as a slope that becomes lower as it moves away from the food receiving portion.

[0076] The food packaging container of the present invention is made of paper material, so that it can be easily separated and disposed of.

[0077] The food packaging container of the present invention can overcome the limitation of paper containers alone not being able to adhere to the lid film that covers and seals the container due to gaps (gaps) caused by bends, steps, and molding deviations during paper molding. Specifically, by providing an inner container unit made of molded plastic material, this problem is resolved, sealing stability is improved, and the container can be used for various food packaging purposes.

[0078] The food packaging container of the present invention is suitable for use as a food packaging material with a long shelf life, as it is less likely to be deformed by exposure to moisture and water from the external environment, and can minimize distortion of the container even when deformed by using a mixture of different materials.

[0079] The food packaging container of the present invention can substantially maximize the recycling rate by making it easy for users to separate and dispose of it.

[0080] FIG. 1 is a perspective view showing a food packaging container according to one embodiment of the present invention.

[0081] Figure 2 is an exploded perspective view showing a food packaging container according to one embodiment of the present invention.

[0082] Figure 3 is a cross-sectional view showing the internal container unit.

[0083] Fig. 4a is a cross-sectional view showing the A-A' section of Fig. 1.

[0084] Fig. 4b is a cross-sectional view showing the B-B' section of Fig. 1.

[0085] Figure 5 is a development diagram of Figure 1.

[0086] Figure 6 is a photograph showing a food packaging container according to one embodiment.

[0087] Fig. 7 is a perspective view showing a main portion of a first wing according to one embodiment.

[0088] FIGS. 8a and 8b are cross-sectional views showing another embodiment of a food packaging container of the present invention.

[0089] Figure 9 is a development diagram showing another embodiment of a food packaging container of the present invention.

[0090] Fig. 10 is a perspective view showing the main parts of the first wing part and the fifth wing part according to one embodiment.

[0091] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. Throughout this process, the sizes and shapes of components depicted in the drawings may be exaggerated for clarity and convenience. Furthermore, terms specifically defined in consideration of the structure and operation of the present invention may vary depending on the intentions or practices of the user or operator. Definitions of these terms should be based on the overall content of this specification.

[0092] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms “center,” “upper,” “lower,” “left,” “right,” “vertical,” “horizontal,” “inner,” “outer,” “one side,” “other side,” etc., is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is normally placed when used, and is only for the purpose of explaining and briefly explaining the present invention, and does not suggest or imply that the indicated device or element must have a specific orientation and be configured or operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0093] FIG. 1 is a perspective view showing a food packaging container according to one embodiment of the present invention. FIG. 2 is an exploded perspective view showing a food packaging container according to one embodiment of the present invention. FIG. 3 is a cross-sectional view showing an inner container unit. FIG. 4a is a cross-sectional view showing the A-A' section of FIG. 1. FIG. 4b is a cross-sectional view showing the B-B' section of FIG. 1. FIG. 5 is an exploded view of FIG. 1. FIG. 6 is a photograph showing a food packaging container according to one embodiment. FIG. 7 is a perspective view showing a main portion of a first wing portion according to one embodiment. FIG. 8a and FIG. 8b are cross-sectional views showing another embodiment of a food packaging container according to the present invention. FIG. 9 is an exploded view showing another embodiment of a food packaging container according to the present invention. FIG. 10 is a perspective view showing main portions of the first wing portion and the fifth wing portion according to one embodiment.

[0094] Hereinafter, the food packaging container of the present invention will be described in detail with reference to FIGS. 1 to 10. In FIGS. 1 to 10, the z-axis direction may be an up-down direction, the x-axis direction may be a first direction, and the y-axis direction may be a second direction.

[0095] As shown in FIG. 1 and FIG. 2, the food packaging container of the present invention,

[0096] An internal container unit (100) in which a food receiving space is formed inside;

[0097] A bottom portion (210) whose upper surface supports the bottom surface of the inner container unit (100);

[0098] A side wall portion (220) connected to the lower surface portion (210) and supporting the side surface of the inner container unit (100); and

[0099] It may include a wing portion (230) having one edge connected to the upper part of the side wall portion (220) and an upper surface bonded to the lower surface of the inner frame portion (120) of the inner container unit (100).

[0100] The above inner container unit (100) may be made of plastic material.

[0101] The above-mentioned bottom portion (210), the side wall portion (220), and the wing portion (230) are formed as one body, are made of paper material, and a pressing line (a line, P) may be formed on the boundary line of the bottom portion (210), the side wall portion (220), and the wing portion (230).

[0102] The food packaging container of the present invention may be provided with a plastic tray as the inner container unit (100). The plastic tray provided as the inner container unit (100) is manufactured to a minimum thickness capable of maintaining moisture and oxygen blocking, and the outer container unit provided with paper ensures the rigidity of the entire container, thereby maintaining the shape of the container.

[0103] The material of the inner container unit (100) may include at least one of PP (polypropylene), PET (polyethylene terephthalate), and EVOH (ethylene vinyl alcohol) polymers. The thickness of the inner container unit (100) may be formed to be at least 0.1 mm or more. Preferably, the thickness of the inner container unit (100) may be formed to be 0.2 mm to 1.0 mm. Various design structures may be inserted to reinforce the strength and provide functionality to the inner container unit (100).

[0104] As illustrated in FIG. 3, the inner container unit (100) may include a food receiving portion (110) in which the food receiving space (111) is formed inside, and an inner frame portion (120) coupled to the upper end of the food receiving portion (110).

[0105] The thickness of the inner frame portion (120) may be formed to be 1.5 to 3 times the thickness of the bottom surface of the food receiving portion (110).

[0106] The inner frame portion (120) may be formed in a closed loop shape, the inner periphery of the inner frame portion (120) may be connected to the upper end of the food receiving portion (110), and the inner frame portion (120) may be formed as a slope that decreases as it moves away from the food receiving portion (110). By forming the inner frame portion (120) in the shape described above, the wing portion (230) may be prevented from spreading due to the elasticity of the paper.

[0107] The food receiving portion (110) may be provided in the shape of a container with an open top. For example, it may be a hexahedral or polyhedral container with an open top. Alternatively, the food receiving portion (110) may be a container with a flat bottom and a side wall whose lower end is sealed to the bottom.

[0108] The inner frame part (120) is a closed-loop frame having a plane perpendicular to the vertical direction, and can be connected to the upper end of the food receiving part (110). After the food is received in the food receiving part (110), the inner frame part (120) covers the upper surface of the inner frame part with a lid film or the like to adhere the lid film to the upper surface of the inner frame part, thereby completely blocking the food received in the food receiving part (110) from the outside. Accordingly, the closed loop formed by the inside of the inner frame part (120) can be completely aligned with and connected to the closed loop formed by the upper end of the food receiving part (110).

[0109] In the food packaging container of the present invention, the bottom portion (210), side wall portion (220), and wing portion (230) may be formed as a single body using paper material. Specifically, as shown in FIG. 5 or FIG. 9, the paper substrate may be cut and then folded to produce the container.

[0110] The material of the bottom portion (210), side wall portion (220), and wing portion (230) can be selected from various paper types (SBS, FBB, white paper, etc.) depending on the type of food, cooking method, storage method, etc. Alternatively, it can be selected in consideration of water resistance, strength, and printability.

[0111] The materials of the bottom portion (210), side wall portion (220), and wing portion (230) may be coated with an eco-friendly water-based coating agent on the outer surface to enhance water resistance and strength in order to prevent deterioration of the quality of the paper material due to exposure to moisture during the food manufacturing process and distribution. For example, the paper may be coated with an eco-friendly water-based coating agent using an aqueous composition based on an ethylene (meth)acrylic acid copolymer. The coated paper may have a blocking temperature of 70°C or higher, an adhesive temperature of 150°C or lower, a water resistance of 5 g / ㎡ or lower, and a moisture permeability of 600 g / ㎡·day or lower.

[0112] The material of the bottom portion (210), side wall portion (220), and wing portion (230) may include one or more of SBS, FBB, and white paperboard.

[0113] At this time, a pressing line (P) may be formed on the boundary line forming the boundary between the bottom portion (210), the side wall portion (220), and the wing portion (230). The pressing line (P) may be a line of a mark pressed into the paper by pressing the paper with a rigid jig.

[0114] The side wall portion (220) may be provided in multiple numbers, and the wing portions (230) may be provided in multiple numbers. For example, when the food receiving portion (110) is provided in a hexahedral shape, the side wall portions (220) may be provided in four numbers to correspond to the food receiving portion (110), and the wing portions (230) may also be provided in four numbers to correspond to the number of side wall portions (220).

[0115] The above-mentioned bottom portion (210) may be provided in a plane shape perpendicular to the up-down direction. For example, the bottom portion (210) may be provided in a rectangular shape with the first direction and the second direction as sides.

[0116] As illustrated in FIGS. 4A and 4B, the side wall portion (220) may include a first side wall portion (221) having a lower end connected to the bottom portion (210) and provided in a planar shape horizontal to the first direction, a second side wall portion (222) having a lower end connected to the bottom portion (210) and provided in a planar shape horizontal to the first direction and facing the first side wall portion (221) in a spaced-apart manner in the second direction, a third side wall portion (223) having a lower end connected to the bottom portion (210) and provided in a planar shape horizontal to the second direction, and a fourth side wall portion (224) having a lower end connected to the bottom portion (210) and provided in a planar shape horizontal to the second direction and facing the third side wall portion (223) in a spaced-apart manner in the first direction.

[0117] The first side wall portion (221) and the second side wall portion (222) may be formed in a shape parallel to the vertical direction, or as shown in FIG. 4a, they may be formed in a shape in which the first side wall portion (221) and the second side wall portion (222) are inclined so that they move away from each other as they go upward.

[0118] The third side wall portion (223) and the fourth side wall portion (224) may also be formed in a shape parallel to the vertical direction, or as shown in FIG. 4b, they may be formed in a shape in which the third side wall portion (223) and the fourth side wall portion (224) are inclined so that they move away from each other as they go upward.

[0119] For example, one end of a third side wall portion (223) and one end of a fourth side wall portion (224) are respectively connected to each of both ends of the first side wall portion (221), and one end of a third side wall portion (223) and one end of a fourth side wall portion (224) are respectively connected to each of both ends of the second side wall portion (222), so that the side wall portion (220) can form a closed loop shape, specifically, four faces that are side walls of a hexahedron.

[0120] Auxiliary wall portions (221a, 222a) are formed at both ends of the first side wall portion (221) and the second side wall portion (222) to prevent the third side wall portion (223) and the fourth side wall portion (224) from being crumpled inward. Alternatively, the auxiliary wall portions (221a, 222a) may be bonded to the third side wall portion (223) and the fourth side wall portion (224) to more firmly maintain the shape of the side wall portion (220).

[0121] As illustrated in FIG. 5, the bottom portion (210), the first side wall portion (221), the second side wall portion (222), the third side wall portion (223), and the fourth side wall portion (224) are formed as one body, and a pressing line (P) may be formed on the boundary line of the bottom portion (210), the first side wall portion (221), the second side wall portion (222), the third side wall portion (223), and the fourth side wall portion (224).

[0122] As shown in FIGS. 4a and 4b, the wing portion (230) may include a first wing portion (231) and a second wing portion (232) which are provided in a plane shape perpendicular to the up-down direction and have the first direction as the longitudinal direction, and a third wing portion (233) and a fourth wing portion (234) which are provided in a plane shape perpendicular to the up-down direction and have the second direction as the longitudinal direction.

[0123] At this time, the first wing part (231) has one edge connected to the upper end of the first side wall part (221) and is connected as one body with the first side wall part (221), the second wing part (232) has one edge connected to the upper end of the second side wall part (222) and is connected as one body with the second side wall part (222), the third wing part (233) has one edge connected to the upper end of the third side wall part (223) and is connected as one body with the third side wall part (223), and the fourth wing part (234) has one edge connected to the upper end of the fourth side wall part (224) and is connected as one body with the fourth side wall part (224).

[0124] A pressing line (P) may be formed at the boundary line between the first wing part (231) and the first side wall part (221), the boundary line between the second wing part (232) and the second side wall part (222), the boundary line between the third wing part (233) and the third side wall part (223), and the boundary line between the fourth wing part (234) and the fourth side wall part (224).

[0125] As illustrated in FIG. 5, the lengths of the first wing portion (231) and the second wing portion (232) in the first direction may be formed to be longer than the lengths of the first side wall portion (221) and the second side wall portion (222) in the first direction, and the lengths of the third wing portion (233) and the fourth wing portion (234) in the second direction may be formed to be equal to or shorter than the lengths of the third side wall portion (223) and the fourth side wall portion (224) in the second direction. Preferably, the length of the first wing part (231) or the second wing part (232) in the first direction is formed as the sum of the length of the first side wall part (221) or the second side wall part (222) in the first direction and the length of the third wing part (233) and the fourth wing part (234) in the first direction, and the length of the third wing part (233) and the fourth wing part (234) in the second direction can be formed to be the same as the length of the third side wall part (223) and the fourth side wall part (224) in the second direction.

[0126] Even if the first wing part (231), the second wing part (232), the third wing part (233), and the fourth wing part (234) are formed as described above, a gap may exist between the first wing part (231) and the third wing part (233), as shown in the left photo of Fig. 6, and perfect sealing cannot be achieved if only a paper tray exists. However, the food packaging container of the present invention can eliminate the gap or step as described above and achieve perfect food sealing, as shown in the right photo of Fig. 6, by having an inner container unit (100) made of a plastic material.

[0127] As illustrated in FIGS. 5 and 7, the centers of the first wing portion (231) and the first side wall portion (221) in the first direction are aligned, and a pair of handle pressing lines (231a) may be formed on the first wing portion (231) extending in the second direction to enable a region protruding further than the first side wall portion (221) in the first direction to be foldable. At this time, the upper surface of the first wing portion (231) from the handle pressing lines (231a) to the end may not be adhered to the lower surface of the inner frame portion (120).

[0128] In another embodiment, in the food packaging container of the present invention, as shown in FIGS. 8A and 8B, the wing portion (230) may further include a fifth wing portion (235) and a sixth wing portion (236) that are provided in a plane shape perpendicular to the vertical direction and extend in the first direction, and a seventh wing portion (237) and an eighth wing portion (238) that are provided in a plane shape perpendicular to the vertical direction and extend in the second direction.

[0129] As illustrated in FIG. 9, the fifth wing part (235) may be provided in a shape corresponding to the first wing part (231), the sixth wing part (236) may be provided in a shape corresponding to the second wing part (232), the seventh wing part (237) may be provided in a shape corresponding to the third wing part (233), and the eighth wing part (238) may be provided in a shape corresponding to the fourth wing part (234).

[0130] As shown in FIGS. 8A and 8B, the fifth wing part (235) may be laminated so that its upper surface faces the first wing part (231) and the bottom surface of the first wing part (231), the sixth wing part (236) may be laminated so that its upper surface faces the second wing part (232) and the bottom surface of the second wing part (232), the seventh wing part (237) may be laminated so that its upper surface faces the third wing part (233) and the bottom surface of the third wing part (233), and the eighth wing part (238) may be laminated so that its upper surface faces the fourth wing part (234) and the bottom surface of the fourth wing part (234).

[0131] The first wing part (231) and the fifth wing part (235) are formed as one body, and the boundary line of the first wing part (231) and the fifth wing part (235) is formed by folding by a pressing line (P), the second wing part (232) and the sixth wing part (236) are formed as one body, and the boundary line of the second wing part (232) and the sixth wing part (236) is formed by folding by a pressing line (P), the third wing part (233) and the seventh wing part (237) are formed as one body, and the boundary line of the third wing part (233) and the seventh wing part (237) is formed by folding by a pressing line (P), the fourth wing part (234) and the eighth wing part (238) are formed as one body, and the boundary line of the fourth wing part (234) and the eighth wing part The boundary line of the wing portion (238) may be formed by folding along a pressing line (P).

[0132] The wing portion (230) may further include a fifth wing portion (235), a sixth wing portion (236), a seventh wing portion (237), and an eighth wing portion (238), thereby providing additional rigidity to the container. In cases where deformation of the container is expected to be greater due to heating of food, etc., the wing portion (230) corresponding to the upper frame may be reinforced with strength to suppress deformation of the container.

[0133] As shown in FIGS. 8a and 8b, the side wall portion (220) may further include a fifth side wall portion (225) and a sixth side wall portion (226) provided in a plane shape horizontal to the first direction, and a seventh side wall portion (227) and an eighth side wall portion (228) provided in a plane shape horizontal to the second direction.

[0134] As illustrated in FIG. 9, the fifth side wall portion (225) may have an upper end connected to the fifth wing portion (235) and be connected as one body with the fifth wing portion (235), the sixth side wall portion (226) may have an upper end connected to the sixth wing portion (236) and be connected as one body with the sixth wing portion (236), the seventh side wall portion (227) may have an upper end connected to the seventh wing portion (237) and be connected as one body with the seventh wing portion (237), and the eighth side wall portion (228) may have an upper end connected to the eighth wing portion (238) and be connected as one body with the eighth wing portion (238). The fifth side wall portion (225) may be provided in a shape corresponding to the first side wall portion (221), the sixth side wall portion (226) may be provided in a shape corresponding to the second side wall portion (222), the seventh side wall portion (227) may be provided in a shape corresponding to the third side wall portion (223), and the eighth side wall portion (228) may be provided in a shape corresponding to the fourth side wall portion (224).

[0135] The first side wall portion (221) and the fifth side wall portion (225) may be in close contact with each other, the second side wall portion (222) and the sixth side wall portion (226) may be in close contact with each other, the third side wall portion (223) and the seventh side wall portion (227) may be in close contact with each other, and the fourth side wall portion (224) and the eighth side wall portion (228) may be in close contact with each other. The first side wall portion (221) and the fifth side wall portion (225), the second side wall portion (222) and the sixth side wall portion (226), the third side wall portion (223) and the seventh side wall portion (227), and the fourth side wall portion (224) and the eighth side wall portion (228) may be bonded to each other with an adhesive.

[0136] The boundary line between the fifth wing part (235) and the fifth side wall part (225), the boundary line between the sixth wing part (236) and the sixth side wall part (226), the boundary line between the seventh wing part (237) and the seventh side wall part (227), and the boundary line between the eighth wing part (238) and the eighth side wall part (228) may be formed as a weak line (t).

[0137] The above-mentioned weak line (t) may be a line formed by partially cutting the thickness of the fabric to facilitate folding. Alternatively, the above-mentioned weak line (t) may be a line formed by partially cutting a certain length at certain intervals at certain intervals along an imaginary line to facilitate folding.

[0138] As illustrated in FIGS. 9 and 10, the lengths of the first wing portion (231) and the fifth wing portion (235) in the first direction are formed to be longer than the length of the first side wall portion (221) in the first direction, the first wing portion (231) and the fifth wing portion (235) are formed to have the same length in the first direction, and the boundary line between the first wing portion (231) and the fifth wing portion (235) is formed as a pressing line (P) from the center in the first direction as the length of the side wall portion (220), and a part of the side wall portion (220) that protrudes more than the length in the first direction is formed as a cutting line, and the fifth wing portion (235) may be formed with a pair of pressing lines (235a) for a handle whose second direction is the longitudinal direction from the starting point of the cutting lines of both ends.

[0139] While the embodiments of the present invention have been described above, they are merely exemplary, and those skilled in the art will appreciate that various modifications and equivalent embodiments are possible. Therefore, the true technical protection scope of the present invention should be defined by the following claims.

[0140] [Explanation of symbols]

[0141] 100...inner container unit 110...food receiving section 111...food receiving space

[0142] 120...inner frame part 210...bottom part 220...side wall part 221...first side wall part

[0143] 221a...auxiliary wall section 222...second side wall section 222a...auxiliary wall section 223...third side wall section

[0144] 224...4th side wall 225...5th side wall 226...6th side wall 227...7th side wall

[0145] 228...8th side wall 230...wing 231...1st wing

[0146] 231a...Handle push line 232...Second wing part 233...Third wing part

[0147] 234...4th wing section 235...5th wing section 235a...Handle push line

[0148] 236...6th wing section 237...7th wing section 238...8th wing section

[0149] P...pressure line t...vulnerability line

Claims

1. An internal container unit in which a food receiving space is formed inside; A bottom surface having an upper surface that supports the bottom surface of the inner container unit; A side wall portion having a lower portion connected to the base portion and supporting a side surface of the inner container unit; and A wing part having one edge connected to the upper part of the side wall part and having an upper surface to which the lower surface of the inner frame part of the inner container unit is bonded, The above inner container unit is made of plastic material, The above-mentioned bottom portion, the side wall portion and the wing portion are made of paper material, A food packaging container in which a pressing line is formed on at least one of the boundaries of the bottom portion, the side wall portion, and the wing portion.

2. In paragraph 1, The above-mentioned bottom portion, the side wall portion and the wing portion are formed as one body, The above side wall portion is provided in multiples, A food packaging container having a plurality of wings.

3. In paragraph 2, The above-mentioned bottom surface is provided in a plane shape perpendicular to the up-down direction, The above side wall portion, A first side wall portion having a lower portion connected to the bottom portion and having a horizontal plane shape with respect to a first direction perpendicular to the up-down direction; A second side wall portion having a lower portion connected to the bottom portion and formed in a plane shape horizontal to the first direction and facing the first side wall portion in a second direction perpendicular to the up-down direction and the first direction, A third side wall portion having a lower portion connected to the bottom portion and having a plane shape that is horizontal to the second direction; The lower part is connected to the bottom part and has a plane shape that is horizontal to the second direction, and includes a fourth side wall part that faces the third side wall part and is spaced apart from the first direction, The above-mentioned bottom portion, the first side wall portion, the second side wall portion, the third side wall portion and the fourth side wall portion are formed as one body, A food packaging container in which a pressing line is formed on the boundary line of the bottom portion, the first side wall portion, the second side wall portion, the third side wall portion, and the fourth side wall portion.

4. In paragraph 3, The above wing part, A first wing portion and a second wing portion are provided in a plane shape perpendicular to the vertical direction and extend in the first direction, It includes a third wing part and a fourth wing part that are provided in a plane shape perpendicular to the vertical direction and extend in the second direction, The first wing portion is connected to the upper end of the first side wall portion at one edge thereof and is connected as one body with the first side wall portion. The second wing portion is connected to the upper end of the second side wall portion at one edge thereof and is connected as one body with the second side wall portion. The third wing portion is connected to the upper end of the third side wall portion at one edge thereof and is connected as one body with the third side wall portion. The fourth wing portion is connected to the upper end of the fourth side wall portion at one edge thereof and is connected as one body with the fourth side wall portion. A food packaging container, wherein a pressing line is formed at a boundary line between the first wing portion and the first side wall portion, a boundary line between the second wing portion and the second side wall portion, a boundary line between the third wing portion and the third side wall portion, and a boundary line between the fourth wing portion and the fourth side wall portion.

5. In paragraph 4, The lengths of the first wing portion and the second wing portion in the first direction are formed longer than the lengths of the first side wall portion and the second side wall portion in the first direction, The length of the third wing portion and the fourth wing portion in the second direction is formed to be equal to or shorter than the length of the third side wall portion and the fourth side wall portion in the second direction, The centers of the first wing portion and the first side wall portion coincide in the first direction, A food packaging container, wherein the first wing portion is formed with a pair of handle-like pressing lines extending in a second direction so that an area protruding further than the first side wall portion in the first direction can be folded.

6. In paragraph 4, The above wing part, A fifth wing part and a sixth wing part are provided in a plane shape perpendicular to the vertical direction and extend in the first direction, It further includes a seventh wing part and an eighth wing part that are provided in a plane shape perpendicular to the vertical direction and extend in the second direction, The fifth wing part is laminated so that its upper surface faces the first wing part and the lower surface of the first wing part, The sixth wing part is laminated so that its upper surface faces the second wing part and the lower surface of the second wing part, The above seventh wing part is laminated so that the upper surface faces the third wing part and the lower surface of the third wing part, The above eighth wing part is laminated so that the upper surface faces the fourth wing part and the lower surface of the fourth wing part, The first wing part and the fifth wing part are formed as one body, and the boundary line of the first wing part and the fifth wing part is formed by folding by a pressing line. The second wing part and the sixth wing part are formed as one body, and the boundary line of the second wing part and the sixth wing part is formed by folding by a pressing line. The third wing part and the seventh wing part are formed as one body, and the boundary line of the third wing part and the seventh wing part is formed by folding by a pressing line. A food packaging container wherein the fourth wing portion and the eighth wing portion are formed as one body, and the boundary line of the fourth wing portion and the eighth wing portion is formed by folding by a pressing line.

7. In paragraph 6, The above side wall portion, A fifth side wall portion and a sixth side wall portion provided in a horizontal plane shape with respect to the first direction, Further comprising a seventh side wall portion and an eighth side wall portion provided in a horizontal plane shape with respect to the second direction, The fifth side wall portion is connected to the fifth wing portion at its upper end and is connected as one body with the fifth wing portion. The sixth side wall portion is connected at the upper end to the sixth wing portion and is connected as one body with the sixth wing portion. The seventh side wall portion is connected at the upper end to the seventh wing portion and is connected as one body with the seventh wing portion. The above eighth side wall portion is connected at the upper end to the eighth wing portion and is connected as one body with the eighth wing portion. The first side wall portion and the fifth side wall portion are in close contact with each other, The second side wall portion and the sixth side wall portion are in close contact with each other, The third side wall portion and the seventh side wall portion are in close contact with each other, The fourth side wall portion and the eighth side wall portion are in close contact with each other, A food packaging container, wherein the boundary line between the fifth wing portion and the fifth side wall portion, the boundary line between the sixth wing portion and the sixth side wall portion, the boundary line between the seventh wing portion and the seventh side wall portion, and the boundary line between the eighth wing portion and the eighth side wall portion are formed as weak lines.

8. In paragraph 7, The above vulnerability line is, A food packaging container formed by cutting a portion of the thickness or border of paper.

9. In paragraph 6, The length of the first wing portion and the fifth wing portion in the first direction is formed to be longer than the length of the first side wall portion in the first direction, The first wing portion and the fifth wing portion are formed with the same length in the first direction, The boundary line between the first wing part and the fifth wing part is formed as a pressing line from the center in the first direction to the length in the first direction of the side wall part, and a part of the side wall part that protrudes more than the length in the first direction is formed as a cutting line. A food packaging container in which the fifth wing portion is formed with a pair of handle pressing lines extending in the second direction from the starting point of the cut line of both ends.

10. In paragraph 1, The material of the inner container unit includes at least one of polypropylene, polyethylene terephthalate, and ethylene-vinyl alcohol copolymer, A food packaging container, wherein the thickness of the inner container unit is formed to be 0.1 mm or more.

11. In paragraph 1, A food packaging container, wherein the paper material of the bottom portion, the side wall portion, and the wing portion includes at least one of SBS, FBB, and white paperboard.

12. In paragraph 1, The above inner container unit is, A food receiving section in which the food receiving space is formed inside, Including the inner frame part coupled to the upper part of the food receiving part, The above inner frame portion is formed in a closed loop shape, The inner periphery of the inner frame part is connected to the upper part of the food receiving part, A food packaging container in which the inner frame portion is formed as a slope that decreases as it gets farther away from the food receiving portion.

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