JP2003341701A - Packaging container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging container capable of easily coping with a change of shapes and sizes, effectively economically packaging an item to be packaged and being sealed by means of an adhesive tape or shrink packaging. <P>SOLUTION: The packaging container comprises a container 10 having a fringe portion 11 in an opening circumference and a cover 20 having a fringe portion 21 overlapping the fringe portion 11. The fringe portions 11 and 21 have horizontal surfaces 12 and 22 protruding in the horizontal direction from the opening portion, vertical surfaces 13 and 23 extending vertically downward from the horizontal surface edge and a recess portion 15 in an edge portion formed by the horizontal surface 12 and the vertical surface 13. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging container capable of sealing and sealing a packaging container containing contents such as food with an adhesive tape or shrink packaging.

[0002]

2. Description of the Related Art Conventionally, a combination of a plastic container and a plastic film or lid is generally used as a packaging container for hermetically packaging an object to be packaged such as food. As a method of sealing the packaging container, when a film is used, after putting an object to be packaged in the container, the film is covered and fixed on the opening of the container. When a lid is used, a lid and a container having a flange portion at the periphery of the opening in advance are used, the packaged object is put into the container and then the lid is covered and fixed, and then the flange portion of the sealing device is used. It is placed so that it fits into the seal mold, and a pad plate corresponding to the seal mold descends from the upper surface and is heated by the pad plate and / or the seal mold while sandwiching the flange portion between the seal mold and the pad plate. And heat seal the container and the lid. When heat sealing is not performed, an adhesive or the like is applied in advance between the flange portions that come into contact with each other and is pressed to seal the container and the lid.

In Japanese Patent Application Laid-Open No. 61-103, a container formed of a synthetic resin sheet is fixed to a lower mold corresponding to the shape of the opening of the container, an object to be packaged is put in the container, and the container is opened. A method is disclosed in which after covering the portion with a sealing film or sheet, the entire opening of the container is heated and pressed from the upper surface of the sealing film or sheet with a heat roll to thermally bond the periphery of the opening. This method, when the shape of the container is different, it is not necessary to produce a heating mold tool having a shape corresponding to it, it is possible to suppress the manufacturing cost of such a heating mold tool and to save the labor of replacing the heating mold tool. Therefore, the work efficiency can be improved.

Further, in Japanese Patent Laid-Open No. 4-189721, there is an insulating base plate in which a heating element is arranged at the edge of several holes formed in a plate-like body, and a flange portion of a container is provided on the plate-like body. Place the containers in correspondence with each other, insert the items to be packaged, and mount them (covers).
Disclosed is a method of heat-sealing a container and a mount with a mold of a heated sealing device, in which a pressing plate descends from the upper part and is conveyed by a conveyor device, and a pressing plate descends from the upper part to sandwich the flange part between the upper and lower parts. ing. Since this method does not heat the backing sheet side, deformation (distortion) due to heat of the lid material does not occur, and thus it is excellent in that it can be packaged with good appearance.

[0005]

However, according to the method disclosed in Japanese Patent Laid-Open No. 61-103, the entire container opening is heated and pressed from the upper surface of the sealing film or sheet with a heat roll to heat the periphery of the opening. Due to the adhesion, there remains a problem that the sealing film or sheet is deformed by heat. Also, in the case of packaging in a shape in which the object to be packaged rises from the edge of the container, the object to be packaged is crushed by the film on the top, or the films overlap with each other due to the object to be packaged at the flange part of the container, so wrinkles occur There is a case. If wrinkles occur,
There is a problem that the seal is not maintained, foreign matter is mixed in from the gap of wrinkles, the object to be packaged is crushed by the film, and the packaging itself has poor cosmetic appearance due to overlapping wrinkles of the film . Further, it is necessary to prepare a lower mold tool for fixing the container according to the shape of the container, and it costs a lot of money to manufacture the lower mold tool. Further, it takes time and labor to replace the lower mold tool, and there is a problem of storage and management.

On the other hand, the method and apparatus typified by Japanese Unexamined Patent Publication No. 4-189721 require a seal-type tool provided with a heating element corresponding to each of various containers having different sizes and designs. In addition, the manufacturing cost of the seal mold is high.
In addition, it takes time and labor to replace the seal mold tool, and there is a problem of storage and management.

As described above, conventional packaging containers for food and the like have some problems in terms of economy, space, and personnel, and the present situation is that they cannot cope with increasingly diversified forms in the future. Is.

The present invention solves such a problem and copes with packaging containers whose sizes and shapes are diversified, and simplifies the production, maintenance and management of the packaging device, and the packaging process itself, thereby efficiently and efficiently. An object is to provide a packaging container that can be economically packaged and can be hermetically sealed.

[0009]

Means for Solving the Problems The present inventors have completed the present invention as a result of extensive studies to achieve the above-mentioned object. That is, the present invention is as follows.

(1) Consists of a container having an opening at the top and a flange at the periphery of the opening, and a lid having a flange covering the opening of the container and overlapping the flange of the container. A packaging container, in which both flange portions have a horizontal surface protruding horizontally from the opening portion and a vertical surface extending vertically downward from the end of the horizontal surface, and the vertical surface of the flange portion of the container is the flange portion of the lid. Is longer in the vertical direction than the vertical surface of the container, and the flange portion of the container is formed such that the vertical surface is recessed inward and the horizontal surface is recessed downward at a part of the ridge formed by the vertical surface and the horizontal surface. A packaging container having a recess.

(2) Consists of a container having an opening at the top and a flange at the periphery of the opening, and a lid having a flange covering the opening of the container and overlapping the flange of the container. A packaging container, in which both flange portions have a horizontal surface protruding horizontally from the opening portion and a vertical surface extending vertically upward from the end of the horizontal surface, and the vertical surface of the flange portion of the lid is the flange portion of the container. Is longer in the vertical direction than the vertical plane, and the flange portion of the lid is formed such that the vertical plane is recessed inward and the horizontal plane is recessed upward at a part of the ridge formed by the vertical plane and the horizontal plane. A packaging container having a recess.

(3) Consists of a container having an opening at the top and a flange on the periphery of the opening, and a lid having a flange covering the opening of the container and overlapping the flange of the container. A packaging container, wherein the flange portion of the container has a horizontal surface protruding horizontally from the opening portion and a vertical surface extending vertically downward from the end of the horizontal surface, and the flange portion of the lid extends horizontally from the opening portion. It has a horizontal plane that projects and a vertical plane that extends vertically upward from the end of the horizontal plane, and constitutes a plane in which the vertical planes of both flanges are continuous, and further, both flanges form a vertical plane and a horizontal plane. A packaging container, characterized in that, in a part of the ridge portion, a vertical surface is inward, a horizontal surface is a lid flange portion upward, and a container flange portion is downward, and each of them has a recessed portion.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The feature of the present invention resides in that the flange portions attached to the lid and the container respectively have a horizontal surface and a vertical surface extending vertically above or below the end of the horizontal surface. Attach the adhesive tape so that it covers the vertical end of the flange part or the horizontal end,
By shrink-wrapping with a shrink film, it can be sealed. Therefore, even if the shape or size of the container is changed, it can be dealt with by simply changing the width or the attaching position of the adhesive tape, the size of the shrink film, or the like. Also, at the corner of the container,
No wrinkles are formed on the adhesive tape or shrink film, and the sealing performance is not deteriorated. Further, in the packaging container of the present invention, since the flange portion is formed with a recess for increasing the strength, the flange portion is deformed by an external force applied when the adhesive tape is attached or when the shrink film is heat-shrinked. There is no fear of deterioration, and deterioration of cosmetic properties and hermeticity due to the deformation is prevented.

The present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a perspective view of an embodiment of the packaging container of the present invention. In the figure, 10 is a container, 11 is a flange portion,
12 is a horizontal surface, 13 is a vertical surface, 14 is a ridge portion, 15 is a concave portion, 20 is a lid, 21 is a flange portion, 22 is a horizontal surface, 23
Is a vertical surface and 24 is Ayabe.

The packaging container of the present invention basically comprises a container 10 and a lid 20, the container 10 has a flange portion 11 at the periphery of the opening, and the lid 20 has a flange portion 21 overlapping the flange portion 11. is doing. FIG. 2 is a perspective view showing a state in which an object to be packaged is housed in the container 10 of the packaging container, covered (overlapped) with the lid 20, and sealed with an adhesive tape, in which 30 denotes an adhesive tape. .

The container 10 according to the present invention is a container for storing articles to be packaged and has an opening on the upper surface. Although the shape of the opening is rectangular in FIG. 1, the shape is not particularly limited to this, and may be circular, triangular, or polygon of pentagon or more, and may be a rhombus, an ellipse, or an amorphous shape composed of a curve. It doesn't matter. Further, the lid 20 covers the opening at the top of the container 10. The material of the container 10 and the lid 20 is not limited, and examples thereof include plastic, metal, wood, paper, and other simple substances, or a laminated body of the above materials. In particular, the lid 20 can visually confirm the object to be packaged. From the point of view, it is desirable that it is transparent, and that it is transparent and excellent in gloss from the viewpoint of aesthetics. Further, from the viewpoint of separate collection, it is preferable that the container 10 and the lid 20 are made of the same material, and particularly, in the mode in which the gas is replaced, a gas barrier plastic is preferable.

The plastic used as the material of the container 10 and the lid 20 is thermoplastic plastic or thermosetting plastic, but plastic generally used for packaging containers can be used. Examples of thermoplastics include polyethylene resin, polypropylene resin, polystyrene resin, methacrylic resin, polyvinyl chloride resin, polyamide resin, polycarbonate resin, polyethylene terephthalate resin, polybutylene terephthalate resin, and cellulose acetate resin. Examples of the plastic include urea resin, melamine resin, xylene resin, phenol resin, unsaturated polyester resin, and the like, such as homopolymer or copolymer resin thereof, and a single-layer or multi-layer structure composed of these plastics. Can be mentioned.

The above gas barrier plastic means a plastic having a gas barrier property, and usually has a carbon dioxide gas permeation amount of 1.0 to 4935.0 ml.
/ M ² /day/MPa(0.1~500cc/m ^2/2
4 hr / atm), oxygen gas permeation amount is 1.0 to 197
4.0 ml / m ² / day / MPa (0.1-200c
^{c / m 2 / 24hr / atm} ), nitrogen gas permeation amount 1.
0 to 1480.5 ml / m ² / day / MPa (0.1
^{~150cc / m 2 / 24hr / atm} ) and has a. Specifically, for example, polyamide, polyethylene terephthalate, polyvinylidene chloride, ethylene vinyl alcohol copolymer, stretched or unstretched from a homopolymer or copolymer mainly composed of unsaturated nitrile such as acrylonitrile or methacrylonitrile. Films and sheets can be mentioned, and single layers or 2 using these resins.
Examples thereof include a laminate of at least one kind of resin, a laminate of the above resin with another resin such as polyethylene, or a film or sheet made of the above resin, which is surface-coated with vinylidene chloride or the like.

Further, in terms of the height relationship between the container 10 and the lid 20, the container 10 is provided with a sense of volume due to the display effect of the packaging container.
Is preferably lower than the height of the lid 20.

In the packaging container of the present invention, the container 10 and the lid 20 have flange portions 11 and 21, respectively, and when the lid 20 is put on the container 10, the flange portions 11 and 21 overlap each other. Is configured. In the present invention, the flange portion 11 has a horizontal surface 12 that horizontally projects from the peripheral edge of the opening of the container 10, and a vertical surface 13 that extends vertically from the end of the horizontal surface 12, and the flange portion 21.
Has a horizontal surface 22 and a vertical surface 23 corresponding to the flange portion 11.

FIG. 3 shows the flange portion 11 according to the present invention.
12 shows a configuration example. FIG. 3A is a partially enlarged view of the AA ′ direction cross section of FIG. 1, and is an example in which the vertical surfaces 13 and 23 extend vertically downward from the ends of the horizontal surfaces 12 and 22. In this configuration, the vertical surface 13 of the flange portion 11 of the container 10 located inside is formed longer than the vertical surface 23 of the flange portion 21 of the lid 20. Further, FIG. 3B is an example in which the vertical planes 13 and 23 extend vertically upward from the ends of the horizontal planes 12 and 22, and the vertical plane 13 is formed shorter than the vertical plane 23. Further, in FIG. 3C, the vertical plane 13 is the horizontal plane 1.
In this example, the vertical planes 23 extend vertically downward from the two ends and the vertical planes 23 vertically upward from the horizontal plane 22 ends so that the vertical planes 13 and 23 form a continuous plane.

The vertical widths of the vertical planes 13 and 23 of the flanges 11 and 12 according to the present invention are not particularly limited as long as they can be sealed by sticking an adhesive tape or shrink wrapping, but when the adhesive tape 30 is stuck and sealed. 2 to
About 35 mm is preferable, and more preferably 4 to 25 m.
m.

FIG. 3 (d) shows a form generally referred to as inside / outside fitting, in which the horizontal ridges 12 and 22 are formed with the convex ridges 17 parallel to the peripheral edge of the opening and the groove portions 27 to be fitted therein.
This is an example in which the flange portions 11 and 22 are strengthened, and FIG.
Is an application example of. Incidentally, in the present invention, as shown in FIG. 3D, the horizontal planes 12 and 22 having the structures such as the ridges 17 and the groove portions 27 are also included in the horizontal planes 12 and 22 of the flange portions 11 and 21 according to the present invention. Further, the horizontal planes 12 and 22 according to the present invention may have an inclination slightly above or below the horizontal direction as long as they can overlap each other at the time of polymerization and seal the packaging container. Two
3 may also have an inclination slightly inward or outward from the vertical direction.

In the present invention, the flange portion is further strengthened by providing a recess portion in the flange portion.
The flange portion provided with the recess is shown in FIG. 1 and FIG.
It is the flange portion 11 of the container 10 in the configuration of (d), the flange portion 21 of the lid 20 in the configuration of FIG. 3 (b), and both the flange portions 11 and 21 in the configuration of FIG. 3 (c). When the concave portion is formed on the flange portion 11, as shown in FIG. 1, in a part of the ridge portion 14 formed by the vertical plane 13 and the horizontal plane 12, the vertical plane 13 is inward,
When the horizontal surfaces 12 are formed so as to be recessed downward, respectively, and when formed on the flange portion 21, the horizontal surface 22 and the vertical surface 2 are formed.
In the twill portion 24 formed by 3 and 3, the vertical surface 23 is formed inward and the horizontal surface 22 is formed upward.

FIG. 4 shows the flange portion 11 of the container 10 of FIG.
Indicates. FIG. 4A is a plan view and FIG. 4B is a front view.
Since the concave portion 15 is configured to improve the rigidity of the flange portion 11, it is not necessary to provide a corner portion having high strength, so it may be provided between the corner portions, but the corner portion may be formed as desired. It may be provided. Moreover, the number of the concave portions 15 is not particularly limited.

The size of the concave portion 15 according to the present invention depends on the size and strength of the flange portion 11, but in the category generally used as a food packaging container, as shown in FIG. 4, a horizontal surface 12 and a vertical surface 13 are provided. When formed in a rectangular shape, the width (W) is 3 to 20 mm, the distance (S) between the adjacent recesses 15 is 3 to 20 mm, and the depth from the vertical plane 13 is left in the width (D) of the horizontal plane 12. The gap (d) is preferably set to be 1 mm or more and 1/5 to 4/5 of D. Further, the depth from the horizontal plane 12 is such that when the gap (t) from the end position of the vertical surface 23 of the flange portion 21 of the lid 20 shown by the dotted line in the drawing is 0.5 mm or more, the width of the vertical surface 23 (T ) Is set to 1/2 or less. Note that the relationship between the width (H) of the vertical surface 13 and T is set so that (HT) leaves a width enough to attach the adhesive tape. The recess 15
In the case where the above is provided on the flange portion 21 of the lid 20, the flange portion 11 may be replaced with 21 in the setting.

In the case of the configuration of FIG. 3C, W,
S and d are the same as the above setting, but when the packaging container is sealed with the adhesive tape, the concave portion 15 needs to be completely covered with the adhesive tape, and therefore, it is shown in FIG. 4 (c). , The clearance (t ′) between the ends of the vertical surfaces 13 and 23 and the recess 15 is preferably 1 mm or more, and further D
It is preferable to set it to be 1/5 to 4/5.

The shape of the recess 15 according to the present invention is as follows.
As shown in FIGS. 1 and 4, a horizontal plane 12 and a vertical plane 13
In addition to the rectangular shape in FIG. 5, a triangular shape in the horizontal plane 12 as shown in FIG. 5A, a semicircle or a semielliptic shape as shown in FIG. 5B, and a trapezoidal shape as shown in FIG. Used. In the case of FIG. 5A, the horizontal plane 1
2, the apex angle (θ) is preferably 20 to 15
It is 0 °, and in the case of FIG. 5C, the width (w) of the upper side is preferably 2 to 18 mm. In any case, the depth from the vertical surface 13 is set so that the gap (d) left in the width (D) of the horizontal surface 12 is 1 mm or more and 1/5 to 4/5 of D. Is preferred. Furthermore, vertical plane 13
The width (W), the distance (S) between the adjacent recesses 15 and the depth from the horizontal plane 12 are the same as those in the case of the rectangle in FIG.

In the packaging container of the present invention, in order to prevent the lid 20 from slipping down from the container 10, a convex portion projecting to the other side inside at least one of the flange portions 11 and 21 of the container 10 and the lid 20, Alternatively, the flange portion 1
It is also possible to provide one of the projections 1 and 21 with a projection projecting to the other side and the other with a recess for receiving the one projection. 6 and 7 are schematic cross-sectional views of specific configurations. FIG. 6 shows FIG.
FIG. 7 shows a configuration based on FIG. 3 (c).
The inside (a) is an example in which the convex portion 61 is provided on the lid 20, and the inside (a) is the lid 2.
0 and a concave portion 6 for receiving the convex portion 61 in the container 10.
2 is an example, and (c) is an example in which the convex portion 61 is provided on the container 10. Such a convex portion 61, or the convex portion 61 and the concave portion 6
The position at which 2 is provided is not particularly limited, but it is preferable to provide it at a corner from the viewpoint of beauty and ease of taking out the packaged item. In addition, in the configuration examples of FIGS. 6 and 7, the configuration of (b) is particularly preferable. preferable.

Further, in the present invention, as shown in FIG.
In the configuration shown in (d), the vertical plane 1 located inside
It is preferable to provide a step projecting outward in the horizontal direction below the end of the vertical surface 23 located on the outer side. Similarly, in the configuration shown in FIG. 3 (b), it is preferable to provide a step protruding outward in the horizontal direction above the vertical surface 23 located inside and above the end of the vertical surface 13 located outside. In addition, in the configurations shown in FIGS. 3A, 3B, and 3D, from the vertical end 3 located inside,
In the configuration shown in (c), it is preferable to form a reinforcing surface projecting outward in the horizontal direction from both ends of the vertical surface.
FIG. 8 is a perspective view of a configuration example in which the step and the reinforcing surface are formed in the configuration of FIG. 3A, and FIG. 9 is a partial plan view of the flange portion of the container. In the figure, 81 is a step and 82 is a reinforcing surface. The width (p1) of the step 81 is preferably ± 2 mm of the thickness of the vertical surface 13 of the flange portion 11 of the lid 10. By providing the step 81, when the adhesive tape is attached, the end of the outer vertical surface 23 ends. As a result, the step formed on the surface of the tape is alleviated and the cosmetic appearance is improved. Therefore, the position of the step 81 is preferably closer to the vertical surface 13 of the flange portion 11 of the lid 10, and is preferably 2 from the end of the vertical surface 13.
It is preferably within mm. The width of the reinforcing surface 82 (p2)
Is less than 1 mm, the effect of improving rigidity is insufficient.
If it exceeds m, the cosmetic properties are deteriorated, so 1 to 2 is preferable.
Provide in the range of mm.

The inside of the packaging container of the present invention can be hermetically sealed by finally applying an adhesive tape or sealing it by shrink wrapping. The adhesive tape 30 used in the present invention has an elongated shape having a width, and it is sufficient that it can be suspended and sealed on the flange portions 11 and 21. Specifically, in the configuration of FIGS. 3A, 3B, and 3D, the outer vertical end is covered, and in the configuration of FIG. 3C, the horizontal plane 12 of both flange portions 11 and 12 is covered. , 22 and the adhesive tape 30 is applied so as to cover the recesses 15 and the ends.
The adhesive tape may have the same width as the entire tape or may have a partially thin portion or thick portion. Also,
By intentionally providing a narrow portion, or attaching a string-shaped cut tape or thread inside, easy opening can be provided. In addition, examples of the material of the adhesive tape 30 include paper, metal thin film, plastic, and the like, and from the viewpoint of separate collection, the same material as the container 10 and the lid 20 is preferable, and more preferably, the container 10, the lid 20, and the adhesive tape. All 30 are made of gas barrier plastic. Further, examples of the adhesive used for the adhesive tape 30 include a solvent type, a hot melt type, and a reactive type. When the packaged object is a food, an adhesive compatible with the Food Sanitation Law is used. It is desirable to do.

As the shrink film used when the packaging container of the present invention is sealed by shrink packaging, the materials used in conventional shrink packaging can be used. For example, polyethylene, polypropylene, polyamide, poly Vinyl chloride, ethylene-vinyl acetate copolymer and its saponified product, polyvinyl alcohol and the like are preferably used. Further, the shrink film is at least the outer vertical end in the configuration of FIGS. 3A, 3B, and 3D, and the horizontal planes 12 and 22 of the flange portions 11 and 12 in the configuration of FIG. 3C. The end and the recess 15 are set to be covered with at least a shrink film.

The packaging container of the present invention can be sealed and easily sealed as described above, and its sealing property is excellent, so that the inside of the packaging container can be replaced with gas. The gas replacement according to the present invention means replacement of the air in the packaging container with a desired gas, which can improve the storability of the packaged object. Specifically, when the object to be packaged is a food, by substituting with an inert gas, oxidation prevention of oil and fat components, preservation of active ingredients such as vitamins, fungi and fungi, prevention of spoilage by propagation of microorganisms such as yeast, It is possible to obtain effects such as discoloration of pigments, prevention of discoloration, and prevention of scattering of aroma. Further, by substituting with a gas having a bacteriostatic action such as carbon dioxide gas, the preservability of the packaged product can be further improved.

Examples of the gas that can be used in the gas replacement include nitrogen, carbon dioxide (carbon dioxide gas), oxygen, argon and the like, and these can be used alone or in combination. In addition, generally known ozone and natural and synthetic antibacterial substances (eg, hinokitiol) may be used for the purpose of positively sterilizing microorganisms such as molds, fungi and yeasts.

[0036]

As described above, the packaging container of the present invention can be easily sealed by sealing with adhesive tape or shrink wrapping, and has high sealing property.
It is also suitable for gas replacement packaging. Further, even when the shape or size is changed, it is not necessary to make a large design change to the device or the process, and the increase in manufacturing cost can be suppressed. Further, in the present invention, since the flange portion is reinforced, even by applying an adhesive tape or shrink wrapping,
The flange portion is not deformed, and there is no fear that the deformation may cause deterioration of the sealing property or the cosmetic property. Further, even when the containers and the lids are stacked and stored, the flange portion is prevented from being deformed due to the stacking. Further, when the recess is formed in the flange portion of the container, when the steam generated in the container is condensed into water, the water flows from the ceiling of the lid through the flange portion of the lid to the recess portion of the flange portion of the container. Therefore, it also has an effect that condensed water does not remain in the container.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a packaging container of the present invention.

FIG. 2 is a perspective view showing a state in which the packaging container of FIG. 2 is sealed.

FIG. 3 is a schematic sectional view showing a configuration example of a flange portion of the packaging container of the present invention.

FIG. 4 is a view showing a concave portion of the embodiment shown in FIG.

FIG. 5 is a diagram showing a configuration example of a recess according to the present invention.

FIG. 6 is a schematic cross-sectional view showing a configuration example of a convex portion and a concave portion for preventing the lid from slipping off in the present invention.

FIG. 7 is a schematic cross-sectional view showing a configuration example of a convex portion and a concave portion for preventing the lid from slipping off in the present invention.

FIG. 8 is a diagram showing another embodiment of the present invention.

FIG. 9 is a partial plan view of a flange portion of a container according to another embodiment of the present invention.

[Explanation of symbols]

10 containers 20 lid 11, 21 Flange 12, 22 Horizontal plane 13, 23 Vertical 14, 24 Ridge 15 recess 17 convex stripes 27 Groove 61 convex 62 recess 81 steps 82 Reinforcing surface

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3E067 AB01 BA10B BA21C BB14B                       BB14C BC07B CA01 CA24                       DA02 EA06 EA18 EA24 EA29                       EA32 EB01 EB22 ED08 FA04                       FC04                 3E084 AA05 AA14 AA24 AA25 AB10                       BA01 CA03 CC03 CC04 CC05                       DA03 DB13 DC03 DC04 DC05                       FA09 FC04 FC09 FC10 GA08                       GB12 LA17 LB02 LB09

Claims (11)

[Claims] 1. A package comprising a container having an opening at the top and having a flange at the periphery of the opening, and a lid having a flange covering the opening of the container and overlapping the flange of the container. In the container, both flange portions have a horizontal surface protruding horizontally from the opening, and a vertical surface extending vertically downward from the end of the horizontal surface, and the vertical surface of the flange portion of the container is the flange surface of the lid. Longer in the vertical direction than the vertical plane,
Further, the flange portion of the container has a concave portion formed such that, in a part of a ridge formed by a vertical surface and a horizontal surface, the vertical surface is inside and the horizontal surface is recessed downward. . 2. The packaging container according to claim 1, wherein the vertical surface of the flange portion of the container has a step projecting outward in the horizontal direction below the vertical end of the flange portion of the lid. 3. The packaging container according to claim 1 or 2, wherein the flange portion of the container has a reinforcing surface projecting outward in the horizontal direction from the vertical end. 4. A package comprising a container having an opening at the top and a flange on the periphery of the opening, and a lid having a flange covering the opening of the container and overlapping the flange of the container. In the container, both flange portions have a horizontal surface protruding horizontally from the opening and a vertical surface extending vertically upward from the end of the horizontal surface, and the vertical surface of the flange portion of the lid is the flange surface of the container. Longer in the vertical direction than the vertical plane,
Furthermore, the flange portion of the lid has recesses formed so that the vertical surface is inward and the horizontal surface is recessed upward at a part of the ridge portion formed by the vertical surface and the horizontal surface. . 5. The packaging container according to any one of claims 1 to 4, wherein an adhesive tape is attached to seal the ends of the vertical planes located on the outer side of the vertical planes of both flanges, and then sealed. 6. The packaging container according to any one of claims 1 to 4, wherein at least one of the vertical planes of both flange portions is covered with a shrink film at the outermost vertical plane end and sealed by shrink wrapping. 7. A package comprising a container having an opening at the top and a flange at the periphery of the opening, and a lid having a flange that covers the opening of the container and overlaps the flange of the container. In the container, the flange portion of the container has a horizontal surface protruding horizontally from the opening portion and a vertical surface extending vertically downward from the end of the horizontal surface, and the flange portion of the lid extends horizontally from the opening portion. A horizontal plane that extends and a vertical plane that extends vertically upward from the end of the horizontal plane, and constitutes a plane in which the vertical planes of both flange portions are continuous, and further, both flange portions form a ridge formed by the vertical plane and the horizontal plane. A packaging container characterized in that, in a part of the portion, a vertical surface is inward, a horizontal surface is a flange portion of the lid upward, and a flange portion of the container is downward. 8. The packaging container according to claim 7, wherein an adhesive tape is applied to cover the ends of the horizontal surfaces and the recessed portions of both flange portions and sealing is performed. 9. The packaging container according to claim 7, wherein at least the horizontal ends of both flange portions are covered with a shrink film and sealed by shrink packaging. 10. A convex portion projecting to the other side on the inside of at least one of the lid and the flange portion of the container, or a convex portion projecting to the other side on one inner side, and the one convex section on the other side inside. The packaging container according to any one of claims 1 to 9, which is provided with a recess for receiving. 11. The packaging container according to any one of claims 1 to 10, which is sealed after the inside is replaced with gas.