JP2010132302A - Packaging container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging container which effectively prevents an illegal act while adopting a simple packaging material such as strap-shaped plastic sheet, an adhesive tape. <P>SOLUTION: This packaging container 1 includes a container body 10 with an upward opening and a lid 20 for closing the opening. The body 10 includes a bottom 101, a body peripheral wall 102, the first body flange 103, the first body drooping part 104, the second body flange 105 and the second body drooping part 106. The lid 20 includes a lid peripheral wall 202, the lid first flange 203, a lid inside drooping part 209, the lid first drooping part 204, the lid second flange 205, the lid second drooping part 206 and the first recess 208 which lies recedingly covering the flange 205 and the drooping part 206 at a plurality of peripheral places of the lid 20. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a packaging container that mainly contains various processed foods, and is suitable for display on a display shelf or the like as a lunch box for sale.

2. Description of the Related Art As a packaging container for packaging various processed foods such as side dishes and lunch box materials, a container obtained by thermoforming a synthetic resin sheet is known. This type of container is lightweight and has excellent strength, and can be said to be a packaging container suitable for the demand for simplifying packaging by reducing the amount of plastic material used as much as possible.
However, when this type of packaging container is actually displayed and sold on a display shelf or the like, the container body is covered with a lid mainly for the purpose of maintaining the sanitary condition of the contents, and from above, In many cases, it was displayed and sold in a state where the entire container was covered with a wrapping material or the like.

  However, the use of a wrapping material that covers the entire container is problematic in that the amount of packaging material used increases and is not desirable from the viewpoint of protecting the global environment.

  Therefore, conventionally, in order to reduce the amount of packaging material used, instead of a wrapping material that covers the entire container, a packaging container that uses a belt-shaped plastic sheet that is wrapped around the center of the container (the following Patent Document 1), A packaging container (such as the following Patent Document 2) in which a lid and a container main body are partially stopped with an adhesive tape has been proposed.

JP 2005-35614 A JP 2008-222304 A

  However, in the case of a packaging container using a belt-like plastic sheet or adhesive tape as described above, an illegal act such as partially opening the lid and adding mischief to the contents becomes relatively easy.

  The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide a packaging container effective in preventing fraud while employing a simple packaging material such as a strip-shaped plastic sheet or an adhesive tape. To do.

  A packaging container according to the present invention includes a container body that opens upward, and a lid that closes the opening, and the container body includes a bottom portion, a body peripheral wall portion that stands up from the periphery of the bottom portion, and A main body first flange portion extending outward from the upper end of the main body peripheral wall portion, a main body first drooping portion hanging from the outer periphery of the main body first flange portion, and an outer side from the lower end of the main body first drooping portion A main body second flange portion extending toward the main body, and a main body second drooping portion that hangs down from the outer periphery of the main body second flange portion. The lid body includes a lid that is inclined outward from the center side. A peripheral wall portion, a lid first flange portion that comes into contact with the main body first flange portion, a lid inner drooping portion that hangs down from the inner periphery of the lid first flange portion, and a drooping from the outer periphery of the lid first flange portion The lid first hanging part and the lid second flange extending outward from the lower end of the lid first hanging part And a lid second hanging portion that hangs down from the outer periphery of the lid second flange portion, and a first portion that is recessed so as to straddle the lid second flange portion and the lid second hanging portion at a plurality of locations around the lid body. And a depression.

According to the packaging container having such a configuration, the main body first flange portion and the lid first flange portion, the main body first hanging portion and the lid first hanging portion, the main body second flange portion and the lid second flange portion, and the main body second portion. Since the hanging portion and the lid second hanging portion are in contact with each other, the sealed state of the container is more reliable. Further, since the lid inner hanging portion, the lid first flange portion, and the lid first hanging portion are provided, these constitute an annular raised portion having an inverted U-shaped cross section. The lid fixing action by the adhesive tape or the like extends over the entire circumference of the lid body, and it is possible to effectively prevent an illegal act by lifting the lid body.
Furthermore, the first raised portion is formed like a rib by providing a first recessed portion that is recessed so as to straddle the lid second flange portion and the lid second hanging portion at a plurality of locations around the lid. It acts and maintains the angle formed by the lid second hanging portion and the lid second flange portion, making it difficult to separate them. In other words, even if it tries to lift up the lid second hanging part in an attempt to carry out cheating, the first dent suppresses the upward bending of the lid second hanging part and prevents fraud more effectively. obtain.

  In the packaging container according to the present invention, preferably, the lid body is provided with a first raised portion that is raised so as to straddle the lid first hanging portion and the lid second flange portion at a plurality of locations around the lid body. Shall be.

  According to the packaging container having such a configuration, the first raised portion that protrudes toward the outside of the lid body is provided so as to straddle the lid first hanging portion and the lid second flange portion at a plurality of locations around the lid body. As a result, the first raised portion acts like a rib, maintains the angle between the lid first hanging portion and the lid second flange portion, and makes it difficult to bring them close to each other. In other words, even if it is attempted to lift the lid second flange portion in an attempt to act illegally, the first raised portion suppresses the upward bending of the lid second flange portion, thereby preventing the illegal act more effectively. obtain.

  The packaging container according to the present invention is preferably provided with a second raised portion that protrudes so as to straddle the lid inner hanging portion and the lid peripheral wall portion at a plurality of locations around the lid.

  According to the packaging container having such a configuration, since the second raised portion is provided so as to straddle the lid inner hanging portion and the lid peripheral wall portion at a plurality of locations around the lid body, the second raised portion is provided with a rib. In this way, the angle between the lid inner hanging portion and the lid peripheral wall portion is maintained, and it is difficult to bring them close to each other. In other words, even if it is attempted to fold the lid inner hanging portion inward to try to cheat, the second raised portion suppresses the inward folding of the lid inner hanging portion and prevents fraud more effectively. obtain.

  In the packaging container according to the present invention, preferably, the lid second hanging portion is provided with an engaging protrusion capable of being engaged with the tip of the main body second hanging portion.

  According to the packaging container having such a configuration, the engagement protrusion and the front end of the main body second hanging portion are engaged with each other because the engagement protrusion that can be engaged with the front end of the main body second hanging portion is provided. In order to prevent the lid second hanging portion from moving upward, the second hanging portion of the main body can be lifted to prevent an illegal act.

  Further, the packaging container according to the present invention preferably has a configuration in which the packaging container has a rectangular shape in plan view, and the main body first hanging part and the lid first hanging part can be locked to each other. And Since the main body first hanging portion and the lid first hanging portion are configured to be locked to each other, the engagement between the lid body and the container body is doubled, thereby further preventing illegal acts. Can do.

  As described above, according to the packaging container according to the present invention, even when a simple packaging material such as a belt-shaped plastic sheet or an adhesive tape is employed, the container lid is not easily lifted up. It becomes possible to effectively prevent fraud.

FIG. 1 is a perspective view showing an embodiment of a packaging container according to the present invention, and shows a state where the container body 10 and the lid 20 of the packaging container 1 are removed vertically. FIG. 2 is a top view of the packaging container 1. In the present invention, the outward means a direction extending substantially horizontally from the inside of the container toward the outside of the container.
As shown in FIG. 1, a packaging container 1 according to this embodiment includes a substantially rectangular container body 1 and a lid 20 that closes the opening of the container body 1. The form used by stopping the container main body 10 and the cover body 20 with the adhesive tape 30, ... is shown.

The container body 10 includes a substantially rectangular bottom portion 101 on which foods and the like are placed, a body peripheral wall portion 102 that rises obliquely upward from the periphery of the bottom portion 101, and outward from the upper end of the body peripheral wall portion 102. The main body first flange portion 103 extending horizontally, the main body first drooping portion 104 depending from the periphery of the main body first flange portion 103, and extending horizontally outward from the lower end of the main body first drooping portion 104. A main body second flange portion 105 and a main body second hanging portion 106 hanging from the periphery of the main body second flange portion 105 are provided.
In the present invention, “hanging down” is not limited to the case of hanging down strictly in the vertical direction, but is a concept including the case of tilting downward with an inclination angle.

On the other hand, as shown in FIGS. 1 and 2, the lid body 20 includes a top plate portion 201 that faces the bottom portion 101, and a lid peripheral wall portion 202 that is inclined outward from the periphery of the top plate portion 201. ing. Further, the lid body 20 hangs outside the lid peripheral wall portion 202 from the lid first flange portion 203 that contacts the main body first flange portion 103 when closed, and from the inner periphery of the lid first flange portion 203. A lid inner hanging portion 209 is provided. In other words, the lid inner hanging portion 209 and the lid peripheral wall portion 202 form a V-shaped groove.
Further, the lid body 20 includes a lid first hanging portion 204 hanging from the lid first flange portion 203 and a lid second flange portion 205 extending substantially horizontally outward from the lower end of the lid first hanging portion 204. And a lid second hanging portion 206 hanging from the periphery of the lid second flange portion 205.

  That is, in the packaging container 1 according to this embodiment, the container main body 10 and the lid body 20 abut on the main body first flange portion 103 and the lid first flange portion 203, and the main body first hanging portion 204 and the lid first drooping portion 204 extend substantially in parallel with each other and come into contact with the main body second flange portion 105 and the lid second flange portion 205, and the main body second drooping portion 106 and the lid second drooping portion 206 is configured to extend substantially in parallel.

  In the packaging container 1 having such a configuration, the first raised portions 207,..., Which is one of the features of the present invention, are the lid first hanging portion 204 and the lid second flange at a plurality of locations around the lid body 20. The first depressions 208,..., Which are partially raised so as to straddle the portion 205 and are one of the features of the present invention, are provided at a plurality of locations around the lid body 20 It is formed so as to partially protrude so as to straddle the lid second flange portion 205 and the lid second hanging portion 206.

  Further, the packaging container 1 according to the present embodiment has second raised portions 209,... That are one of the features of the present invention, at a plurality of locations around the lid body 20, and the lid inner hanging portion 209 and the lid peripheral wall. It bulges so as to straddle the portion 202.

  Here, in addition to FIGS. 1 and 2, FIG. 3 is an enlarged view of the section indicated by the symbol III-III in FIG. 2, and is a cross section taken along the arrow IV-IV in FIG. 2. By referring to FIG. 4 that is an enlarged view, FIG. 5 that is an enlarged cross-sectional view of the portion indicated by VV, and FIG. 6 that is an enlarged cross-sectional view of the portion indicated by VI-VI. The packaging container 1 according to the embodiment will be described in more detail.

As shown in FIG. 3, the lid 20 in the present embodiment includes a lid first flange portion 203, a lid inner hanging portion 209 that hangs down from the inner periphery of the lid first flange portion 203, and a lid first flange portion 203. A lid first drooping portion 204 that hangs down from the outer periphery of the lid body 20 is provided in an annular shape over the entire circumference of the lid body 20. That is, the lid first hanging portion 209, the lid first flange portion 203, and the lid first hanging portion 204 constitute an annular raised portion 220 having a reverse U-shaped cross section as a whole.
The annular ridge 220 extends the fixing action of the lid 20 by the adhesive tape 30 attached to the center of the four sides of the lid 20, for example, to portions other than the center of the four sides, and the lid. 20 is prevented, and it is possible to effectively prevent an illegal act by lifting the lid 20.

  FIG. 4, which is an enlarged sectional view taken along arrow IV-IV in FIG. 2, is a longitudinal sectional view in the lid radial direction passing through the center of the lid first raised portion 207, as is apparent from FIG. 2. is there. As shown in FIG. 4, the lid first raised portion 207,... In the present embodiment has a central portion between the vicinity of the upper end of the lid first hanging portion 204 and the vicinity of the outer peripheral edge of the lid second flange portion 205. The lid has a longitudinal cross-sectional shape that has an inclined surface that is linearly connected. The “lid radial direction longitudinal section” refers to a section perpendicular to the outer peripheral edge of the lid, and so on.

  Moreover, although the space | interval in the cover peripheral direction of this 1st protruding part 207 is based also on the flexibility of the cover body 20, it is normally provided in the space | interval of 2-6 cm.

  By providing the first bulging portion 207,..., Bulging outward, having such a cross-sectional shape, this inclined surface is near the upper end of the lid first drooping portion 204 (that is, the lid first flange portion). 203) and the vicinity of the periphery of the lid second flange portion 205 are less likely to be close to each other, and the lid second flange portion 205 is less likely to bend upward.

Further, as shown in FIG. 1, the first raised portion 207 in the present embodiment has a circular cross-sectional shape in a horizontal cross section and a shape in which the diameter is expanded downward, in other words, a cone. It has a configuration in which it is raised from the lid first hanging portion 204 and the lid second flange portion 205 in a shape that is cut in the vertical direction.
By providing the first raised portion 207,... Having such a configuration, it is possible to prevent fraud, and at the same time, the lid body 20 is easy to be stacked. The effect that it can be improved is exhibited.

  FIG. 5, which is an enlarged cross-sectional view of the portion indicated by the symbol V-V in FIG. 2, is a longitudinal sectional view in the lid radial direction passing through the center of the first recess 208, as is apparent from FIG. 2. . As shown in FIG. 5, the first recess 208 in the present embodiment hangs down from the vicinity of the inner peripheral edge of the lid second flange portion 205 at the center, and further extends substantially horizontally outward to hang the lid second. The cross-sectional shape reaches the vicinity of the center of the portion 206. Further, as is apparent from FIG. 1, the first recess 208 in the present embodiment has a circumferential longitudinal section of the lid 20 (a vertical plane that intersects the lid radial direction longitudinal section at a right angle) U. It is shaped like a letter and has a horizontal cross section that is arcuate, in other words, in a shape that forms a part of a cylinder and is recessed inward from the lid second flange portion 205 and the lid second drooping portion 206. It has become.

  By providing the first recess 208 having such a configuration, the lid second hanging portion 206 and the lid second flange portion 205 are hardly separated from each other, and the lid second hanging portion 206 is bent upward. It has the effect of becoming difficult.

  Further, the interval in the lid circumferential direction of the first depression 208 can be set in the same manner as the first ridge 207, and is preferably provided so as to be located in the middle of the first ridge 207. That is, like the packaging container according to the present embodiment, the first raised portions 207, ... and the first depressions 208, ... are alternately provided around the lid body 20, The actions of the first raised portions 207,... And the first recessed portions 208,... Are suitably combined, and the lid second hanging portion 206 and the lid second flange portion 205 are difficult to lift up. There is an effect that the action can be prevented more effectively.

  Furthermore, FIG. 6 which is an arrow cross-sectional enlarged view of the portion indicated by reference numeral VI-VI in FIG. 2 is a longitudinal cross-sectional view in the lid radial direction passing through the center of the second raised portion 210, as is apparent from FIG. It is. As shown in FIG. 6, the second raised portion in the present embodiment is configured to have a linear cross-sectional shape that extends horizontally from the vicinity of the upper end of the lid inner hanging portion 209 to the lid peripheral wall portion 202 at the center thereof. ing. By providing the second raised portions 210,... Having such a cross-sectional shape, the vicinity of the upper end of the lid inner hanging portion 209 (that is, the vicinity of the inner peripheral edge of the lid first flange portion 203) and the lid peripheral wall portion 202 are provided. It becomes difficult to be close to each other, and the lid inner hanging portion 209 is difficult to bend inward.

  In addition, as can be seen from FIG. 1, the second raised portions 210,... In the present embodiment have a shape in which the lid circumferential direction longitudinal section is arcuate and is formed continuously in the lid circumferential direction. As a result, the lid circumferential direction longitudinal section as a whole has a wave shape. By providing the second raised portions 210,... With such a cross-sectional shape, the force to bend the lid inner hanging portion 209 inward is distributed to the left and right in the circumferential direction, thereby preventing illegal acts more reliably. There is an effect that can be.

  Furthermore, as shown in FIGS. 2 and 4, the lid 20 of the packaging container 1 according to the present embodiment has a lower portion of the lid second hanging portion 206 inward at a plurality of locations around the lid 20. Engagement protrusions 211,... Formed in a recess are provided. The engaging projections 211,... Are configured to protrude inward from the tip of the main body second hanging portion so as to engage with the tip of the main body second hanging portion 106 (that is, the outer edge of the container body 10). Accordingly, there is an effect that the upward movement of the lid second drooping portion 206 is restricted and it is difficult to lift the outer edge of the lid 20.

  Furthermore, the packaging container 1 of the present embodiment having a rectangular shape in plan view has a configuration in which the main body first hanging portion 104 and the lid first hanging portion 204 can be locked to each other. As shown in FIG. 2, engagement projections 112 projecting outward are provided at the four corners of the main body first hanging portion 104, and correspondingly, the four corners of the lid first hanging portion 204 are provided. Engagement protrusions 212 that are recessed inward are provided at the corners. With such a configuration, the engagement protrusion 212 provided on the lid body 20 and the engagement protrusion 112 provided on the container body 10 are engaged with each other, so that the lid body 20 and the container body 10 can be easily fixed and separated. effective.

  In addition, the packaging container 1 according to the present embodiment has a large number of minute portions in the circumferential direction on the lower end edge of the main body second hanging portion 106 of the container body 10 and the lower end edge of the lid second hanging portion 206 of the lid body 20. Concavities and convexities (not shown) are alternately formed, and the lower end edge (edge) of the main body second hanging portion 106 and the lower end edge (edge) of the lid second hanging portion 206 are configured so as not to be cut by mistake. ing. That is, the entire periphery of the container body 10 and the lid 20 is formed into a concavo-convex shape (waveform, sine wave, triangular wave, trapezoidal wave, etc.) in the thickness direction by concavo-convex processing such as corrugation and embossing. ing.

  Although not specifically mentioned, the container main body 10 and the lid body 20 in the present embodiment can be formed by, for example, a thermoforming method, and the boundary portions of the above-described parts are continuous and necessary. It is formed in a curved (rounded) manner with a corresponding curvature radius.

The packaging container 1 according to the present embodiment, for example, stores food such as a lunch box material in the container body 10, covers the lid 20, and affixes adhesive tapes 30,... At the center of the four sides of the packaging container. The container body 10 and the lid 20 are used in the procedure of fixing, and a food container is manufactured. Therefore, the packaging container 1 that is displayed on a display shelf or the like as a container containing food is sold, and the container body 10 and the lid body 20 are strongly bonded by the adhesive tape 30 at the center of the four sides. As long as the adhesive tape 30 is in close contact and is not cut or peeled off, the end of the lid 20 cannot be lifted, but the adhesive tape 30 as described above does not exist in portions other than the central part of the four sides. The force for bringing the container body 10 and the lid 20 into close contact with each other is relatively weaker than that of the central portion.
However, according to the packaging container 1 which concerns on this embodiment, since it is equipped with the above structures, compared with the conventional packaging container also in parts other than the center part of the four sides which stick the adhesive tape 30 Thus, the container lid can be more reliably prevented from being lifted.

  Specifically, the lid fixing action by the adhesive tape 30 or the like is spread to the entire circumference of the lid body by the annular raised portion 220, and the first raised portion 207,. Suppressing, suppressing the upward bending of the lid second hanging portion 206 by the first recess 208,..., And suppressing the bending of the lid inner hanging portion 209 to the inside by the second raised portions 210,. In addition, the engagement protrusions 211,... Suppress the upward movement of the lid first drooping portion 204 and the upward movement of the lid second drooping portion 206, and by combining these actions, Even in a portion other than the central portion, the close contact between the container body 10 and the lid 20 can be maintained in a state close to the central portion where the adhesive tape 30 is attached.

  Moreover, in the packaging container 1 which concerns on this embodiment, both the container main body 10 and the cover body 20 are equipped with the double flange part, and also the main body 1st flange part 103 and lid | cover 1st which are inner flange parts. The flange portion 203 can exhibit the above-described effects without forming any irregular shape, and therefore has an effect of not only preventing illegal acts but also exhibiting excellent sealing performance.

  In addition, the packaging container which concerns on this invention is not limited to the said embodiment, Of course, a various change can be added in the range which does not deviate from the summary of this invention.

  For example, in the said embodiment, although the four-side center part of the packaging container 1 was fixed with the adhesive tape 30, ..., it was set as the container with a foodstuff, this invention is not limited to this, The packaging container 1 Can also be applied to a mode in which a fastening tape or the like that winds and fixes the container in the longitudinal direction at the center of the long side is used. Actions can be effectively prevented.

  Moreover, in the said embodiment, although the shape of the 1st protruding part was made into the shape where the horizontal cross section was circular arc shape and expanded the diameter toward the downward direction, this invention is not limited to the said shape, For example, horizontal The cross-section is U-shaped or V-shaped and the diameter is expanded downward, or the horizontal cross-section is arc-shaped, U-shaped, or V-shaped and has the same dimensions from above to below Various shapes can also be adopted.

  Moreover, it is the same also about the shape of a 1st hollow part, a 2nd protruding part, and an engagement protrusion, and it can be set as the various shape which can exhibit the effect similar to the said embodiment. For example, as another form of the second raised portion, the lid circumferential direction longitudinal section alone has a mountain shape, and it is continuously formed in the lid circumferential direction, so that the lid circumferential direction longitudinal section as a whole It is also possible to adopt a shape having such a shape that the surface is a continuous mountain shape.

  Moreover, although the said embodiment demonstrated the case where the engagement protrusion 112 which protruded outward was provided in the four corner part of the said main body 1st drooping part 104, such an engagement protrusion is parts other than a corner | angular part. May be provided.

  In the above embodiment, the case where the container body 10 and the lid body 20 are rectangular has been described, but the present invention is not limited to the horizontal cross-sectional shape of the container, and any shape can be adopted. For example, a polygonal shape, an elliptical shape, a circular shape, or the like can be adopted.

It is the perspective view which showed one Embodiment of the packaging container which concerns on this invention, and the figure which showed the state which removed the container main body and the cover body up and down. The top view which looked at the packaging container which concerns on this invention from upper direction. FIG. 3 is an enlarged cross-sectional view of a portion indicated by reference numeral III-III in FIG. FIG. 4 is an enlarged cross-sectional view of a portion indicated by reference numeral IV-IV in FIG. 2. FIG. 5 is an enlarged cross-sectional view of the portion indicated by the symbol V-V in FIG. 2. FIG. 3 is an enlarged cross-sectional view of the portion indicated by reference numeral VI-VI in FIG. 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Packaging container, 10 ... Container main body, 20 ... Cover body, 30 ... Adhesive tape, 101 ... Bottom part, 102 ... Main body surrounding wall part, 103 ... Main body first flange part, 104 ... Main body first hanging part, 105 ... Main body second flange part 106 ... Main body second hanging part, 112 ... Engaging projection, 201 ... Top plate part, 202 ... Lid peripheral wall part, 203 ... Lid first flange part, 204 ... Lid first drooping part, 205 ... lid second flange portion, 206 ... lid second hanging portion, 207 ... first raised portion, 208 ... first recess portion, 209 ... lid inner hanging portion, 210 ... first Two ridges, 211 ... engagement protrusion, 212 ... engagement protrusion, 220 ... annular ridge

Claims (5)

Comprising a container body opened upward and a lid for closing the opening;
The container main body includes a bottom, a main body peripheral wall standing upright from the periphery of the bottom, a main body first flange extending outward from the upper end of the main body peripheral wall, and an outer periphery of the main first flange A main body first hanging portion hanging from the main body, a main body second flange portion extending outward from a lower end of the main body first hanging portion, and a main body second hanging portion hanging from the outer periphery of the main body second flange portion And
The lid body has a lid peripheral wall portion that is inclined outward from the center side, a lid first flange portion that comes into contact with the main body first flange portion, and a hung from the inner periphery of the lid first flange portion. A lid inner hanging portion, a lid first hanging portion hanging from the outer periphery of the lid first flange portion, a lid second flange portion extending outward from a lower end of the lid first hanging portion, and the lid second A lid second hanging portion that hangs down from the outer periphery of the flange portion, and a first depression portion that is recessed so as to straddle the lid second flange portion and the lid second hanging portion at a plurality of locations around the lid body. A packaging container characterized by that.   The lid body includes a first raised portion that protrudes so as to straddle the lid first hanging portion and the lid second flange portion at a plurality of locations around the lid body. The packaging container according to 1.   The said cover body was equipped with the 2nd protruding part which protruded so that it might straddle over this cover inner drooping part and the said cover surrounding wall part in several places around the said cover body, The 1st or 2 characterized by the above-mentioned. A packaging container according to 1.   The packaging container according to any one of claims 1 to 3, wherein the lid second hanging portion is provided with an engaging projection that can be engaged with a tip of the second hanging portion of the main body.   The packaging container has a rectangular shape in plan view, and has a configuration in which the main body first hanging portion and the lid first hanging portion can be locked to each other at least at a corner portion of the rectangle. Item 5. A packaging container according to any one of Items 1 to 4.

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