Packaging container and developed body of the same

Abstract

To provide a packaging container which includes a portion serving as a small plate and which has excellent productivity, and to provide a developed body of the same.SOLUTION: A packaging body includes: a first back wall 1L having a first bottom side 4L and a back side vertical side 5B; a second back wall 1R having a second bottom side 4R and the back side vertical side 5B; a first front wall 2L overlapped with the first back wall 1L; a second front wall 2R overlapped with the second back wall 1R; a first protrusion wall 3L comprising a first oblique side 6L extending obliquely upward along the first back wall 1L, a protrusion side 7 standing to the front side from the back side vertical side 5B, and a first edge end side 8L for connecting end points S, T of the first oblique side 6L and the protruding side 7 with each other; and a second protrusion wall 3R comprising a second oblique side 6R extending obliquely upward along the second back wall 1R, the protrusion side 7, and a second edge end side 8R for connecting end points (U, T) of the second oblique side 6R and the protrusion side 7. An angle formed by the first bottom side 4L and the first oblique side 6L, and an angle formed by the second bottom side 4R and the second oblique side 6R are substantially the same, and they adhere at a first adhesion region 9L along the first oblique side 6L and at a second adhesion region 9R along the second oblique side 6R.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a packaging container and its deployment body. [Background technology]

[0002] Conventionally, in order to provide food such as French fries for immediate consumption, a paper packaging container with an opening at the top for easy picking has been used. The food provider unfolds the folded packaging container to form a container with an opening at the top, places food such as French fries in the container, and provides the food to the customer as is. The customer who receives the food places the packaging container on a table or the like, or holds it in his / her hand, and picks up the food exposed from the opening at the top with his / her hand to eat.

[0003] Foods such as French fries and nuggets are often eaten as is, or with dipping sauces such as ketchup or various sauces. In this case, food providers often provide customers with a packaging container containing the main food, as well as a separate container filled with or with a portion of dipping sauce.

[0004] If the dipping sauce is provided in a separate container, it becomes difficult to hold both the main food and the dipping sauce in one's hand while eating, and therefore it is not suitable for eating while walking around or watching a sporting event, for example. Therefore, a packaging container with a small plate from which the dipping sauce can be served has been proposed (for example, see Patent Documents 1 and 2).

[0005] However, the packaging containers described in Patent Documents 1 and 2 are not suitable for mechanical production because of their complex shapes and overlapping portions, the components that make up the small plates being separate parts, etc. Therefore, the packaging containers described in these documents had to be assembled manually one by one, resulting in poor productivity.

[0006] Furthermore, various techniques have been proposed for providing simple small paper plates for various uses, not limited to food use (see, for example, Patent Documents 3 and 4). However, the packaging containers described in Patent Documents 3 and 4 have a large area for the overlapping portion and a complex shape, making them unsuitable for mechanical production. Therefore, the packaging containers described in these documents also need to be assembled manually one by one, resulting in poor productivity. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Design No. 1147239 [Patent Document 2] Design No. 1515788 [Patent Document 3] JP 2001-122229 A [Patent Document 4] JP 2003-327236 A Summary of the Invention [Problem to be solved by the invention]

[0008] Therefore, an object of the present invention is to provide a packaging container having a portion that can be used as a small plate, which is highly productive, and a deployed version thereof. [Means for solving the problem]

[0009] The above object can be achieved by the following aspects of the present invention. That is, a packaging container according to one aspect of the present invention includes a first back wall having a first bottom side and a back vertical side having one end common to the first bottom side; A second back wall having a second base side and the back vertical side having one end in common with the back vertical side, and folded forward from the first back wall at the back vertical side; a first front wall folded forward at the first base and overlapped with the first back wall; a second front wall folded forward at the second base and overlapped with the second back wall; a first protruding wall having a triangular shape and three sides: a first oblique side extending diagonally upward along the front surface of the first back wall from one of the reference points; a protruding side rising from the back vertical side to the front from the reference point; and a first edge side connecting the end points of the first oblique side and the protruding side; and a first protruding wall having a triangular shape and three sides; Similarly, the second protruding wall has a triangular shape including three sides: a second hypotenuse extending obliquely upward along the front surface of the second back wall from the reference point; the protruding side interposed between the first protruding wall; and a second edge side connecting the end points of the second hypotenuse and the protruding side, an angle between the first base and the first oblique side and an angle between the second base and the second oblique side are substantially equal; the first rear wall and the first front wall are bonded to each other in a band-shaped first bonding region along the first oblique side of the opposing surfaces of the first rear wall and the first front wall that are overlapped with each other; The second rear wall and the second front wall are bonded to each other at a band-shaped second bonding region along the second oblique side of the opposing surfaces of the overlapping second rear wall and the second front wall.

[0010] The packaging container may include one or more small dish portions formed of the packaging container of the above embodiment, and a main storage portion having a larger storage capacity than the small dish portions, and the small dish portions may be disposed above the main storage portion. In this embodiment, the main storage portion includes at least a first storage side wall, a second storage side wall, and a front storage peripheral wall, and the first storage side wall, the second storage side wall, and the front storage peripheral wall are connected in a ring shape in this order to form the peripheral wall of the main storage portion, The second storage side wall and the second front wall are connected via an opening edge that constitutes a part of an upper opening of the main storage portion, and the second storage side wall and the second rear wall are folded back at the opening edge to overlap each other, and the first storage side wall and the first rear wall are overlapped, At least one of the first front wall and the first rear wall has a side along a boundary line between the first storage side wall and the front storage peripheral wall, and is provided with a protruding piece protruding from the side, The boundary line may be provided with a hole into which the protruding piece fits and is locked.

[0011] On the other hand, the developed package of the present invention is a developed package formed by folding and adhering a single sheet, A first back panel having a first base and a back vertical side as a fold line that is common to and perpendicular to the first base, A second back plate having a second base side on an extension line of the first base side and the back vertical side; a first front panel folded forward at the first base edge and overlapped with the first back panel; a second front panel folded forward at the second base and overlapped with the second back panel; When the first front plate and the second front plate are connected, the first front plate and the second front plate are interposed, and the other end of the front vertical side having one end common to the first base and the second base is used as a reference point. When the first front plate and the second front plate are not connected, one end of the first base and the second base is used as a reference point. A first protruding plate having a triangular shape consisting of three sides: a first oblique side as a folding line between the first front plate and the first back plate surface that extends diagonally upward from one of these reference points, a protruding side as a folding line that extends in the same direction from the reference point to the front side of the back vertical side, and a first edge side connecting the end points of the first oblique side and the protruding side; Similarly, a second oblique side as a folding line between the second front plate and the second back plate surface extending diagonally upward from the reference point, the protruding side shared with the first protruding plate, and a second edge side connecting the end points of the second oblique side and the protruding side are provided. A triangular second protruding plate having three sides, an angle between the first base and the first oblique side and an angle between the second base and the second oblique side are substantially equal; The first back plate and the first front plate are bonded to each other in a first adhesive region that is a strip along the first oblique side of the opposing surfaces of the first back plate and the first front plate that are overlapped with each other, The second back plate and the second front plate are bonded to each other in a band-shaped second bonding region along the second oblique side on the opposing surfaces of the overlapped second back plate and the second front plate. Effect of the Invention

[0012] According to the present invention, it is possible to provide a packaging container having a portion that can be used as a small plate, and a deployed version thereof that is highly productive. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a front view showing a packaging container according to a first embodiment which is an exemplary aspect of the present invention. [Diagram 2] FIG. 1 is a perspective view showing a packaging container according to a first embodiment. [Diagram 3] FIG. 1 is a top view showing a packaging container according to a first embodiment. [Figure 4] FIG. 1 is a plan view (developed view) showing a sheet for producing a packaging container and its developed form according to a first embodiment. [Diagram 5] FIG. 2 is a perspective view illustrating a process of manufacturing the developed body of the packaging container according to the first embodiment. [Figure 6] FIG. 2 is a front view of the unfolded packaging container according to the first embodiment. [Figure 7] FIG. 2 is a rear view of the unfolded packaging container according to the first embodiment. [Figure 8] FIG. 2 is a front view showing a packaging container according to a second embodiment which is an exemplary aspect of the present invention. [Figure 9] FIG. 4 is a left side view showing a packaging container according to a second embodiment. [Figure 10] FIG. 4 is a top view showing a packaging container according to a second embodiment. [Figure 11] FIG. 11 is a perspective view showing an example of a state in which a packaging container according to a second embodiment is used. [Figure 12] FIG. 11 is a plan view (developed view) showing a sheet for producing a packaging container and its developed form according to a second embodiment. [Figure 13] FIG. 11 is a front view of a developed packaging container according to a second embodiment. [Figure 14] FIG. 11 is a rear view of the unfolded packaging container according to the second embodiment. [Figure 15] FIG. 11 is a perspective view showing a packaging container according to a third embodiment which is an exemplary aspect of the present invention. [Figure 16] 16 is a perspective view showing a packaging container according to a third embodiment, seen from an angle different from that of FIG. 15. [Figure 17] FIG. 13 is a plan view (developed view) showing a sheet for producing a packaging container and its developed form according to a third embodiment. [Figure 18] FIG. 11 is a perspective view showing a packaging container according to a fourth embodiment which is an exemplary aspect of the present invention. [Figure 19] FIG. 11 is an exploded front view of a packaging container according to a fourth embodiment. [Figure 20] FIG. 13 is a plan view (developed view) showing a sheet for producing a packaging container and its developed form according to a fourth embodiment. [Figure 21] 13 is an enlarged perspective view of the upper part of a container body in a packaging container according to a fourth embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, a packaging container and its developed body according to four embodiments, which are exemplary aspects of the present invention, will be specifically described with reference to the drawings. The packaging container of the present invention is generally assembled by punching (cutting), folding, and gluing a paper sheet. In addition, in the present invention, the "developed body" refers to a semi-finished product that has been assembled up to the stage before assembling the packaging container that will be the final product, and the user of the packaging container receives the developed body and completes the packaging container by a simple assembly operation such as folding it up when using it, and provides it for practical use. The "developed body" is folded and formed into a plate shape with a small overall thickness from the viewpoint of storage and transportability. In addition, in the present invention, the side that is kept up when using the packaging container is the upper side, and the opposite side is the lower side, the side that is usually facing when using it is the front side, and the opposite side is the back side or rear side, and the left side when facing it is the left side, and the right side is the right side.

[0015] [First embodiment] Fig. 1 is a front view of a packaging container 10 according to a first embodiment, Fig. 2 is a perspective view of the same, and Fig. 3 is a top view of the same. In the figures, the arrow x direction and the opposite direction represent the right-left direction, the arrow y direction and the opposite direction represent the front-back direction, and the arrow z direction and the opposite direction represent the up-down direction (the same applies to all drawings hereinafter except for the developed body and the developed view). As shown in Figs. 1 to 3, the packaging container 10 according to this embodiment has a first rear wall 1L, a second rear wall 1R, a first front wall 2L, a second front wall 2R, a first protruding wall 3L, and a second protruding wall 3R.

[0016] The first back wall 1L has a first base 4L and a back vertical side 5B having one end (point P) in common with the first base 4L. In the packaging container 10 according to this embodiment, a flap piece 11L is provided on the first back wall 1L from the viewpoints of manufacturability, ease of handling, and design. However, the flap piece 11L is not an essential component, and its shape is also optional. The left end of the first back wall 1L (the side opposite to the direction of the arrow x; hereinafter, the same applies to the "left side") forms a left vertical side 12L parallel to the back vertical side 5B, and the upper end (the side in the direction of the arrow z; hereinafter, the same applies to the "upper side") is connected to the flap piece 11L.

[0017] The second back wall 1R has a second base side 4R that shares one end (point P) with the back vertical side 5B, and a back vertical side 5B. The end on the right side (the direction of the arrow x, hereinafter the same as the case of "right side") of the second back wall 1R is a right vertical side 12R that is parallel to the back vertical side 5B. The right vertical side 12R has the same length as the left vertical side 12L, and its upper end is connected to an upper oblique side 11R that faces the back vertical side 5B. The second back wall 1R is folded up from the first back wall 1L at the back vertical side 5B to the front side (the direction of the arrow y, hereinafter the same as the case of "front side"). The angle γ between the first back wall 1L and the second back wall 1R is about an obtuse angle to a right angle of less than 180 degrees, but it can be freely selected as appropriate depending on the usage mode and the circumstances of the user (e.g., store clerk, eater, etc.), and may be an acute angle. An arc-shaped cutout 13B is provided at the upper end of the first rear wall 1L and the second rear wall 1R. The left side of the cutout 13B smoothly connects to the flap piece 11L, and the right side connects to the upper end of the upper oblique side 11R.

[0018] The first front wall 2L is folded back from the first rear wall 1L at the first base 4L to the front side and overlapped with the first rear wall 1L. The second front wall 2R is folded back from the second rear wall 1R to the front side at the second base 4R to overlap with the second rear wall 1R. The first front wall 2L and the second front wall 2R are continuous with each other, and a front vertical side 5F, one end of which (point P) is common to the first base 4L and the second base 4R, is interposed between them. The front vertical side 5F extends from point P to the reference point Q, which is the other end.

[0019] The left end of the first front wall 2L has the same shape as the first back wall 1L, and they overlap and become one to form the left vertical side 12L. In the first front wall 2L, the first front wall oblique side 14L extends obliquely from the upper end of the left vertical side 12L toward the back vertical side 5B at an angle of approximately 45 degrees with the first base side 4L. In the first front wall 2L, the first front wall oblique side 14L ends at a point S, and the first oblique side 6L extends from the point S to the reference point Q. The first oblique side 6L will be described later. Therefore, the first front wall 2L has a pentagonal shape consisting of five sides: the first base side 4L, the left vertical side 12L, the first front wall oblique side 14L, the first oblique side 6L, and the front vertical side 5F.

[0020] The right end of the second front wall 2R has the same shape as the second back wall 1R, and they overlap and become one to form the right vertical side 12R. In the second front wall 2R, the second front wall oblique side 14R extends obliquely from the upper end of the right vertical side 12R toward the back vertical side 5B at an angle of approximately 45 degrees with the second base side 4R. In the second front wall 2R, the second front wall oblique side 14R ends at a point U, and the second oblique side 6R extends from the point U to the reference point Q. The second oblique side 6R will be described later. Therefore, the second front wall 2R has a pentagonal shape consisting of five sides: the second base side 4R, the right vertical side 12R, the second front wall oblique side 14R, the second oblique side 6R, and the front vertical side 5F.

[0021] The first protruding wall 3L is a triangular wall consisting of three sides, a first hypotenuse 6L, a protruding side 7, and a first edge side 8L. The first hypotenuse 6L starts from a reference point Q, which is the other end of the front vertical side 5F, and extends obliquely upward (a combined direction of the opposite direction of the arrow x and the arrow z) along the front surface of the first back wall 1L, reaching a point S, which is one end of the first front wall hypotenuse 14L. The protruding side 7 starts from the reference point Q and rises to the front side from the back vertical side 5B. The first edge side 8L connects the end points (points S and T) of the first hypotenuse 6L and the protruding side 7.

[0022] The second protruding wall 3R is a triangular wall consisting of three sides: the second hypotenuse 6R, the protruding side 7, and the second edge side 8R. The second hypotenuse 6R starts from the reference point Q and extends obliquely upward (the combined direction of the arrow x and arrow z directions) along the front surface of the second back wall 1R. The protruding side 7 is a side shared with the first protruding wall 3L. The second edge side 8R connects the end points (points U and T) of the second hypotenuse 6R and the protruding side 7. The angle θ between the first base side 4L and the first hypotenuse 6L L , and the angle θ between the second base 4R and the second oblique side 6R R Both are approximately 45 degrees. Note that "approximately xx degrees" here means that some margin of error is allowed when manufacturing so that the angle of the target part is xx degrees (this applies to all instances of "approximately xx degrees" in this invention and this specification).

[0023] The overlapping first back wall 1L and first front wall 2L, and the overlapping second back wall 1R and second front wall 2R are all pasted together and fixed by adhesion. At this time, the first back wall 1L and the first front wall 2L are bonded to each other at a strip-shaped first adhesive region 9L along the first oblique side 6L among the opposing surfaces of the overlapping first back wall 1L and first front wall 2L. Also, the second back wall 1R and the second front wall 2R are bonded to each other at a strip-shaped second adhesive region 9R along the second oblique side 6R among the opposing surfaces of the overlapping second back wall 1R and second front wall 2R. In the present invention, the term "along" or "along" refers to a state of extending approximately parallel to an object adjacent to or in the vicinity of the object. Since the first rear wall 1L and the first front wall 2L, and the overlapped second rear wall 1R and the second front wall 2R are bonded together, the angle between the first front wall 2L and the second front wall 2R is substantially the same as the angle γ between the first rear wall 1L and the second rear wall 1R. In Figures 2 and 3, the two are represented by γ without distinction. The packaging container 10 configured as described above is provided with a small plate 15 formed into an inverted pyramid shape by the first rear wall 1L, the second rear wall 1R, the second protruding wall 3R, and the first protruding wall 3L.

[0024] The bonding state of the first back wall 1L and the first front wall 2L, and the second back wall 1R and the second front wall 2R will be described. FIG. 4 is a plan view (equivalent to a developed view) showing a sheet 110 that is punched out of a single sheet of paper and is not folded or glued, for manufacturing the packaging container 10 according to this embodiment and the developed body of the packaging container (hereinafter simply referred to as the "developed body") 10' described later. In the actual manufacturing of the packaging container 10, the sheet 110 is formed, adhesive is applied to a gluing margin 109 described later, and then the sheet is folded to be shaped and glued to manufacture the packaging container. In the case of machine production, the processes from punching out a single sheet of paper to manufacturing the developed body (reference numeral 10' described later) as a product are all carried out by machine. Therefore, the sheet 110 is a semi-finished product (intermediate product) that is not generally distributed on the market (the same applies to the sheets 120, 130, and 140 of other embodiments described later).

[0025] The sheet 110 has a shape in which a flap 111L extends from a position corresponding to one side of a flat hexagon. The sheet 110 has fold lines 104, 105, 106L, and 106R that are pressed in a straight line during punching to facilitate folding. The fold lines 104 and 105 are perpendicular to each other, and the intersection point is point P shown in Figures 1 and 2. From the position of point Q on the fold line 105 moving from point P to the opposite side to the flap 111L, the angle δ that the fold lines 106L and 106R make with both the fold lines 104 and 105 is 1 , δ 2 , δ 3 , δ 4 is extending in a direction at a 45-degree angle.

[0026] The folding lines 104, 105, 106L, and 106R divide the area into the first back panel 101L, the second back panel 101R, the first front panel 102L, the second front panel 102R, the first protruding panel 103L, and the second protruding panel 103R. The first back panel 101L is the first back wall 1L, the second back panel 101R is the second back wall 1R, the first front panel 102L is the first front wall 2L, the second front panel 102R is the second front wall 2R, the first protruding panel 103L is the first protruding wall 3L, and the second protruding panel 103R is the second protruding wall 3R. A strip-shaped, straight overlap margin 109 is formed along the folding line 106L, with the point P as the center. An adhesive is applied to the overlapping portion 109, or a double-sided tape is attached (these are referred to as "adhesive or the like"). This folding line 106L is a portion that will become the first oblique side 6L when the packaging container 10 is completed.

[0027] FIG. 5 is a perspective view of the packaging container 10 during the manufacturing process to explain the process of manufacturing the developed body (developed body 10' described later). FIG. 5 shows a state in which the flap 111L side of the sheet 110 is kept horizontal along the folding line 104, and the surface including the first front panel 102L and the second front panel 102R is folded up to a right angle toward the side where the overlapping margin 109 is provided. As shown in FIG. 5, the overlapping margin 109, which was linear, is folded around point P. The sheet 110 is further folded to overlap the first back panel 101L and the first front panel 102L, and the second back panel 101R and the second front panel 102R, and are bonded together by adhesive or the like attached to the overlapping margin 109. In this manner, the developed body 10' is manufactured from the sheet 110. FIG. 6 is a front view of the developed body 10' manufactured in this manner, and FIG. 7 is a rear view. The deployable body 10' according to this embodiment has a first back plate 101L, a second back plate 101R, a first front plate 102L, a second front plate 102R, a first protruding plate 103L, and a second protruding plate 103R. Note that the direction of the arrow z in the figure is the same as in Figures 1 to 3, but the direction of the arrow x does not coincide with Figures 1 to 3 because the body is not folded at the folding line 105.

[0028] The first back panel 101L has a first base 4L and a back vertical side 5B that has one end in common with and is perpendicular to the first base 4L. The second back panel 101R has a second base 4R on an extension of the first base 4L and a back vertical side 5B. The portion of the sheet 110 that was the fold line 104 is folded back to become the first base 4L and the second base 4R. The back vertical side 5B is a portion of the fold line 105 in the sheet 110, and becomes the fold line as it is. The portion of the sheet 110 that was the flap 111L becomes the flap piece 11L provided on the first back panel 101L. In addition, the first back panel 101L has the left vertical side 12L described in the description of the packaging container 10. The second back panel 101R has the right vertical side 12R and the upper oblique side 11R described in the description of the packaging container 10. Furthermore, the cutout 13B mentioned in the description of the packaging container 10 is provided at the upper end of the first back panel 101L and the second back panel 101R.

[0029] The first front panel 102L is a portion folded back from the first back panel 101L to the front at a portion of the fold line 104 that is the first bottom side 4L and overlapped. The second front panel 102R is a portion folded back from the second back panel 101R to the front at a portion of the fold line 104 that is the second bottom side 4R and overlapped. The first front panel 102L and the second front panel 102R are connected to each other, and a front vertical side 5F, one end of which (point P) is common to the first bottom side 4L and the second bottom side 4R, is interposed between them. The front vertical side 5F extends from point P to the reference point Q, which is the other end. The front vertical side 5F is a portion that was part of the fold line 105 in the sheet 110, and becomes the fold line as it is. Additionally, the first front plate 102L has the left vertical side 12L, the first front wall oblique side 14L, and the first oblique side 6L described in the description of the packaging container 10, and together with the first base side 4L and the front vertical side 5F described above, forms a pentagonal shape with five sides. The second front plate 102R has the right vertical side 12R, the second front wall oblique side 14R, and the second oblique side 6R described in the description of the packaging container 10, and together with the second base side 4R and the front vertical side 5F described above, forms a pentagonal shape with five sides.

[0030] The first protruding plate 103L is a triangular plate consisting of three sides, the first hypotenuse 6L, the protruding side 7, and the first edge side 8L. The first hypotenuse 6L starts from a reference point Q, which is the other end of the front vertical side 5F, and extends obliquely upward (a combined direction of the opposite direction of the arrow x and the arrow z) along the front surface of the first back plate 101L, reaching a point S, which is one end of the first front wall hypotenuse 14L. The protruding side 7 starts from the reference point Q and rises to the front side from the back vertical side 5B. The first edge side 8L connects the end points (points S and T) of the first hypotenuse 6L and the protruding side 7.

[0031] The second protruding plate 103R is a triangular plate consisting of three sides, the second hypotenuse 6R, the protruding side 7, and the second edge side 8R. The second hypotenuse 6R starts from the reference point Q, which is the other end of the front vertical side 5F, and extends obliquely upward (the combined direction of the arrow x direction and the arrow z direction) along the front surface of the second back plate 101R, reaching a point U, which is one end of the second front wall hypotenuse 14R. The protruding side 7 is a side shared with the first protruding plate 103L. The second edge side 8R connects the end points (points U and T) of the second hypotenuse 6R and the protruding side 7.

[0032] Angle θ between the first base 4L and the first hypotenuse 6L L , and the angle θ between the second base 4R and the second oblique side 6R R Both are at approximately 45 degrees. First oblique side 6L is the location of fold line 106L in sheet 110, and becomes the fold line as is. Second oblique side 6R is the location of fold line 106R in sheet 110, and becomes the fold line as is. Projecting side 7 is the location of part of fold line 105 in sheet 110, and becomes the fold line as is.

[0033] Among the opposing surfaces of the overlapped first back plate 101L and first front plate 102L, the first back plate 101L and the first front plate 102L are bonded to each other at a strip-shaped first adhesive region 9L along the first oblique side 6L. Among the opposing surfaces of the overlapped second back plate 101R and the second front plate 102R, the second back plate 101R and the second front plate 102R are bonded to each other at a strip-shaped second adhesive region 9R along the second oblique side 6R. The area that was the overlap margin 109 in the sheet 110 is now the first adhesive region 9L on the surface on the first front plate 102L side and the second adhesive region 9R on the surface on the second back plate 101R side. Then, the sheet 110 is in a state of being bonded to the opposing surfaces (the first back plate 101L and the second front plate 102R) to which no adhesive or the like is attached (i.e., not the overlap margin). That is, on both the left and right sides, the surface on which the overlap margin 109 is formed switches between the front side (first front panel 102L) and the rear side (second rear panel 101R) with the folding line 105 as the reference.

[0034] As shown in FIG. 6, the first adhesive region 9L and the second adhesive region 9R are orthogonal (approximately 90 degrees). However, the overlap margin 109 of the sheet 110 is in a straight line. When the deployable body 10' according to this embodiment is to be produced mechanically, a roll of paper material is cut into sheets, or an already sheet-shaped paper material is conveyed in one direction, and the paper material is subjected to punching, application of adhesive, and folding, etc., in sequence. At this time, by setting the conveying direction of the paper material (sheet 110) to one of the directions of the double arrow C1 shown in FIG. 4, in the operation of applying adhesive, etc., a mechanical device can apply adhesive, etc., in a line along the conveying direction to the linear overlap margin 109. Therefore, the deployable body 10' according to this embodiment, and further the packaging container 10 according to this embodiment, are excellent in productivity.

[0035] In the deployed body 10' according to this embodiment, the notches 13B are formed at the upper ends of the first back panel 101L and the second back panel 101R, and the upper ends of the first protruding panel 103L and the second protruding panel 103R facing these are gripping parts 13F with the front and back surfaces exposed. A user of the packaging container 10 (e.g., a store clerk; the same applies below) who receives the deployed body 10' grips the gripping part 13F with his / her fingers or pulls the first protruding panel 103L and the second protruding panel 103R forward from the first back panel 101L and the second back panel 101R with a cooking utensil such as a potato scoop. At this time, the protruding side 7 is appropriately adjusted so that the front vertical side 5F and the rear vertical side 5B are mountain folds, and the first oblique side 6L and the second oblique side 6R are also valley folds when viewed from the front. The plates are folded so that the small plate 15 has a desired size and a stable angle between the first and second base edges 4L and 4R. In this manner, the packaging container 10 according to the present embodiment shown in Figs. 1 to 3 can be easily assembled from the unfolded body 10'. The first and second base edges 4L and 4R, which were in a straight line in the unfolded body 10' state, open at an obtuse angle with the point P as the base point, so that the packaging container 10 can be placed on a flat surface such as a table with the first and second base edges 4L and 4R as the bottom. As described above, the packaging container 10 according to the present embodiment can be used by placing seasonings or the like in the small plate 15 and placing it on a flat surface.

[0036] [Second embodiment] Fig. 8 is a front view of the packaging container 20 according to the second embodiment, Fig. 9 is a left side view of the same, and Fig. 10 is a top view of the same. Fig. 11 is a perspective view showing an example of a state in which the packaging container 20 according to this embodiment is used. In Figs. 8 to 11 and Figs. 12 and 13 described later, the same reference numerals are used for the components having the same configuration as the packaging container 10 according to the first embodiment and the deployed body 10' thereof, and the same reference numerals are used to designate the components having similar configurations with an alphabet added to the end thereof, so that the description of the similar configurations of the components will be omitted and the differences will be mainly described below.

[0037] As shown in Figs. 8 to 11, the packaging container 20 according to this embodiment includes a main storage section 21, and a small dish section 16 is disposed above the main storage section 21 (in the direction of the arrow z). The small dish section 16 is a member having a shape similar to that of the packaging container 10 according to the first embodiment. The main storage section 21 has a larger storage capacity than the small dish section 16. The main storage section 21 includes a first storage side wall 22L, a second storage side wall 22R, and a front storage peripheral wall 23F, which are connected in this order in an annular shape (the term "annular" here refers to the way in which the two walls are connected to form a ring, and is a concept that includes the case in which the two walls are pyramidal as in this embodiment, resulting in a blocked opening) to form the peripheral wall 23 of the main storage section 21.

[0038] The front storage peripheral wall 23F is composed of a first front wall 23L and a second front wall 23R. Between the four side walls (the first storage side wall 22L, the second storage side wall 22R, the second front wall 23R, and the first front wall 23L) of the peripheral wall 23 are boundary lines 28a, 28b, 28c, and 28d. The four side walls of the peripheral wall 23 are long in the vertical direction and have a triangular shape with the shortest side (opening edges 24a-d described below) on the upper side and the apex opposite to the shortest side on the lower side, so that the peripheral wall 23 as a whole has a quadrangular pyramid shape with the apex on the lower side (the side opposite to the direction of the arrow z. Hereinafter, the same applies to the case of "lower side").

[0039] The upper opening 24 of the main storage section 21 is formed by the opening edges 24a, 24b, 24c, and 24d located at the top of the first storage side wall 22L, the second storage side wall 22R, the second front wall 23R, and the first front wall 23L, and the first edge edge 8L and the second edge edge 8R of the small dish section 16. According to the packaging container 20 of this embodiment, as shown in FIG. 11, a main food 25a such as French fries can be stored in the main storage section 21, and a side food 25b such as ketchup can be stored in the small dish 15a. Then, a person can easily eat the main food 25a without a stand such as a table by holding the peripheral wall 23 of the main storage section 21 with one hand and picking up the main food 25a with the other hand and dipping it in the side food 25b and applying it to it.

[0040] 12 is a plan view (equivalent to a developed view) showing a sheet 120 for manufacturing a packaging container 20 according to this embodiment and a developed body of the packaging container (hereinafter simply referred to as the "developed body") 20' described below. The sheet 120 is made up of a small dish portion 110a which becomes the small dish portion 16, and a main accommodation portion 121 which becomes the main accommodation portion 21. The main accommodation portion 121 is provided with a substantially square portion made up of a second front side plate 123R, a second accommodation side plate 122R, a first accommodation side plate 122L, and a first front side plate 123L, and further includes an overlapping side plate 123D which is continuous with the first front side plate 123L. In the sheet 120, the second front side plate 123R is the second front side wall 23R, the second storage side plate 122R is the second storage side wall 22R, the first storage side plate 122L is the first storage side wall 22L, and the first front side plate 123L is the first front side wall 23L. In the small plate portion 110a in this embodiment, the main differences from the sheet 110 in the first embodiment are that the fold line 105a is longer than the fold line 105, there is no flap 111L, and there are two overlap margins, denoted by reference numerals 109A and 109B.

[0041] The overlap margin 109B is formed in a strip-like straight line along the fold line 106L of the first front plate 102La, and extends through the second front plate 102Ra to the vicinity of the end of the second back plate 101Ra. The fold line 106L is a portion that becomes the first oblique side 6L when the packaging container 20 is completed. The overlap margin 109A is formed parallel to the overlap margin 109B and has the same length as the overlap margin 109B, at a position equidistant from point P, which is the intersection point of the fold line 104 and the fold line 105. When the unfolded body 20' is completed, a part of the overlap margin 109A is overlapped with the area along the fold line 106R of the second front plate 102Ra. An adhesive or the like is attached to the overlap margins 109A and 109B.

[0042] Between the second front plate 123R, the second storage side plate 122R, the first storage side plate 122L, the first front plate 123L, and the overlapping side plate 123D, which are connected in this order, fold lines 128c, 128b, 128a, and 128d are formed in this order. The second front plate 102Ra of the small plate portion 110a and the second storage side plate 122R are connected via the opening edge 24b, and a fold line 128e is formed on the opening edge 24b. A cut 127 is provided between the second protruding plate 103R of the small plate portion 110a and the second storage side plate 122R of the main storage portion 121.

[0043] Among the edges of the second front panel 123R, the long edge 128d' is provided with two insertion pieces 125a spaced apart. The insertion piece 125a has narrowed constrictions 125b formed on both sides of the boundary with the second front panel 123R. Meanwhile, the folding line 128d has two slits 125c spaced apart. At both ends of the slit 125c, very short cuts 125d perpendicular to the slit 125c are provided from the slit 125c toward the folding line 128a. Furthermore, the folding line 128a has a slightly wide slit-shaped hole 26b. Meanwhile, the side 112L of the first front panel 102La that overlaps with the first back panel 101La in the deployed body 20' described later protrudes at an angle from the left vertical side 12La of the first back panel 101L, and is provided with a protruding piece 26a in the middle. Further, a notch 129 having the same shape as the notch 13B is provided between the opening edge 24a of the first accommodating side plate 122L and the opening edge 24b of the second accommodating side plate 122R. The notch 129 overlaps and becomes integrated with the notch 13B when the packaging container 20 is assembled (see FIG. 11).

[0044] As in the first embodiment, the small plate portion 110a of the sheet 120 is folded back along the fold line 104 so that the side where the overlapping portions 109A and 109B are provided becomes a valley. Then, the first back plate 101La and the first front plate 102La, as well as the second back plate 101Ra and the second front plate 102Ra, are overlapped and bonded together with adhesive or the like attached to the overlapping portions 109A and 109B. In this manner, the unfoldable body 20' is manufactured from the sheet 120. FIG. 13 is a front view of the unfoldable body 20' manufactured in this manner, and FIG. 14 is a rear view.

[0045] Among the opposing surfaces of the overlapped first back plate 101La and first front plate 102La, the first back plate 101La and the first front plate 102La are bonded to each other at a strip-shaped first adhesive region 9LA along the first oblique side 6L. Among the opposing surfaces of the overlapped second back plate 101Ra and the second front plate 102Ra, the second back plate 101Ra and the second front plate 102Ra are bonded to each other at a strip-shaped second adhesive region 9RA along the second oblique side 6R. In this embodiment, the extension of the second adhesive region 9RA in the state of the overlap margin 109A is an L-shaped fourth adhesive region 9LB (shown by a two-dot chain line). The first back plate 101La and the first front plate 102La are bonded to each other by the fourth adhesive region 9LB. Furthermore, the extension of the first adhesive region 9LA in the state of the overlap margin 109B is an L-shaped third adhesive region 9RB (shown by a two-dot chain line). The second back panel 101Ra and the second front panel 102Ra are bonded to each other through the third adhesive region 9RB.

[0046] The area of ​​the sheet 120 that was the overlap 109B is now the first adhesive area 9LA on the surface of the first front panel 102La, and the third adhesive area 9RB that spans the surface of the second front panel 102Ra and the surface of the second back panel 101Ra. The area of ​​the sheet 120 that was the overlap 109A is now the second adhesive area 9RA on the surface of the second back panel 101Ra, and the fourth adhesive area 9LB that spans the surface of the first back panel 101La and the surface of the first front panel 102La. Except for the area where the adhesive or the like is bonded to each other, the sheets are bonded to their respective opposing surfaces where no adhesive or the like is attached (i.e., not an overlap). That is, the surfaces on which the overlap 109A and 109B are formed are switched between the front side (first front panel 102L, second front panel 102R) and the back side (first back panel 101L, second back panel 101R) based on the folding line 104. The fourth adhesive region 9LB arranged parallel to the first adhesive region 9LA can be regarded as a part of the first adhesive region, and the third adhesive region 9RB arranged parallel to the second adhesive region 9RA can be regarded as a part of the first adhesive region. That is, in the present invention, the first adhesive region and the second adhesive region may be formed in two rows as in this embodiment, or may be formed in three or more rows.

[0047] As shown in FIG. 13, the first adhesive area 9LA and the second adhesive area 9RA required to form the small plate 15a are perpendicular (approximately 90 degrees). Therefore, if an overlapping margin is to be provided on the same surface, the overlapping margin must be made perpendicular midway, which is generally not suitable for mechanical production in which adhesive or the like is applied in accordance with the conveying direction. However, as shown in FIG. 12, the overlapping margins 109A and 109B are each linear on the sheet 120. When mechanical production of the deployable body 20' according to this embodiment is attempted, by setting the conveying direction of the paper material (sheet 120) to one of the directions of the double-headed arrow C2 shown in FIG. 12, in the operation of applying adhesive or the like, adhesive or the like can be applied in a line to each of the linear overlapping margins 109A and 109B by a mechanical device along the conveying direction.

[0048] Therefore, the deployable body 20' according to this embodiment, and further the packaging container 20 according to this embodiment, are excellent in productivity. Note that, as the region to which adhesive or the like is attached, the band-shaped first adhesive region 9LA along the first oblique side 6L and the band-shaped second adhesive region 9RA along the second oblique side 6R alone are sufficient, but by providing the third adhesive region 9RB and the fourth adhesive region 9LB, the number of adhesive points becomes double, and the adhesive strength is further increased.

[0049] The user of the packaging container 20 who received the deployed body 20' folds the fold lines 128a, 128b, 128c, and 128d in a valley fold when viewed from the front (the surface of FIG. 13), and overlaps the second front side plate 123R so that the second front side plate 123R is the front side (outside) and the overlapping side plate 123D is the back side (inside). Then, the user folds the fold lines 128f at the bases of the two insertion pieces 125a provided on the second front side plate 123R in a valley fold to create creases, and inserts the two insertion pieces 125a into the two slits 125c provided at the positions corresponding to the fold lines 128d. Then, the narrowed portions 125b of the insertion pieces 125a are caught in the notches 125d at both ends of the slits 125c, and are firmly locked so that they do not easily come out. In this manner, the main storage section 21 having a quadrangular pyramid shape is formed. In the formed main accommodation section 21, what were the folding lines 128d (including the slits 125c) and the edges 128d' (including the insertion pieces 125a) in the deployed body 20' overlap to form the boundary line 28d.

[0050] Next, the user folds back the folding line 128e in a valley fold as viewed from the front, brings the portion that will become the small dish portion 16 to the front side (the side where the main storage portion 21 is located), and pulls the first protruding plate 103L and the second protruding plate 103R away from the first back plate 101La and the second back plate 101Ra to the front side by pinching the gripping portion 13F with the fingers. At this time, the protruding side 7 is appropriately adjusted so that the front vertical side 5F and the back vertical side 5B are valley folds, and the first oblique side 6L and the second oblique side 6R are also valley folds as viewed from the front. Then, the first bottom edge 4L and the second bottom edge 4R of the first back plate 101La and the second back plate 101Ra are inserted into the opening formed by the opening edges 24a, 24b, 24c, and 24d, and the rear surfaces (surfaces without the overlapping margins 109A and 109B) of the first back plate 101La and the second back plate 101Ra are overlapped with the front surfaces of the first storage side plate 122L and the second storage side plate 122R, respectively. In this state, the side 112L of the first front plate 102La is shaped along the boundary line 28a between the first storage side plate 122L and the second storage side plate 122R. Then, the protruding piece 26a is fitted and locked into the hole 26b provided in the boundary line 28a, thereby completing the packaging container 20 in which the small plate portion 16 is fixed above the main storage portion 21. In this manner, the packaging container 20 according to this embodiment shown in Figs. 8 to 11 can be easily assembled from the developed body 20'.

[0051] In the completed state of the packaging container 20, the second storage side wall 22R and the second front wall 2R are connected via the opening edge 24b constituting a part of the upper opening 24 of the main storage section 21. In addition, in the state of the packaging container 20, the opening edge 24b is folded back to overlap the second storage side wall 22R and the second rear wall 1R, and the first storage side wall 22L and the first rear wall 1L. Furthermore, the first front wall 2L has a side 112L along the boundary line 28a interposed between the first storage side wall 22L and the front storage peripheral wall 23F (and further the first front side wall 23L), and is provided with a protruding piece 26a protruding from the side 112L. The boundary line 28d is provided with a hole 26b into which the protruding piece 26a is fitted and engaged.

[0052] The first back wall 1L and the first front wall 2L and the second back wall 1R and the second front wall 2R (the back vertical side 5B and the front vertical side 5F) are folded in a valley fold and fixed above the main storage section 21, but due to the restoring force that tries to return this folding to its original state (the angle tries to open up), a pressing force acts on the protruding piece 26a toward the hole 26b. Therefore, the engagement between the hole 26b and the protruding piece 26a does not easily come off.

[0053] In this embodiment, the left vertical side 12L and the protruding piece 26a, which are shaped along the boundary line 28a, are provided on the first front panel 102La, but they may be provided on the first back panel 101La side that is overlapped, or on both the first front panel 102La and the first back panel 101La. When provided on the first back panel 101La side, the first back panel 101La side has a shape similar to that of the side 112L and the protruding piece 26a, for example, in FIG. 12. However, when provided only on the first back panel 101La side, the first front wall 2L that is not engaged is located on the front side, which is unstable, so it is preferable to provide them on the first front panel 102La as in this embodiment, or on both the first front panel 102La and the first back panel 101La.

[0054] In this embodiment, the front storage peripheral wall 23F is described as having an overall quadrangular pyramid shape consisting of two side walls, the first front side wall 23L and the second front side wall 23R. However, the shape of the front storage peripheral wall 23F need only connect the boundary line 28a with the first storage side wall 22L and the boundary line 28c with the second storage side wall 22R to the front storage peripheral wall 23F, and the number of side walls may be one or three or more, the wall may be curved, or any other shape may be used.

[0055] Furthermore, the first storage side wall 22L and the second storage side wall 22R are important components that are overlapped with the first rear wall 1L and the second rear wall 1R, but there are no particular restrictions on the areas other than those that are overlapped with the first rear wall 1L and the second rear wall 1R. For example, in the lower area that is not in contact with the first rear wall 1L or the second rear wall 1R, the number of circumferential side walls may be one or three or more, may be curved, or may have various other shapes. Furthermore, since the first storage side wall 22L and the second storage side wall 22R are not glued to the first rear wall 1L and the second rear wall 1R, some clearance may be provided within the range in which the engagement between the protruding piece 26a and the hole 26b is maintained, the angle between the first storage side wall 22L and the second storage side wall 22R does not have to match the angle between the first rear wall 1L and the second rear wall 1R, and a curved surface may be provided between the first storage side wall 22L and the second storage side wall 22R or over the entire area.

[0056] In addition, in this embodiment, an example of a packaging container 20 suitable for eating on the go is given, in which the main storage section 21 has no bottom, but this is not limited to this, and it is also acceptable to provide a bottom surface having a horizontal flat surface or curved surface at the lower end of the peripheral wall, or even to provide a foot portion. The above-mentioned shape of the main storage portion is the same in the following embodiments.

[0057] [Third embodiment] Fig. 15 is a perspective view of the packaging container 30 according to the third embodiment from diagonally above the left on the front side, and Fig. 16 is a perspective view of the packaging container 30 according to the third embodiment from diagonally slightly above the left on the back side. Fig. 17 is a plan view (equivalent to a developed view) of the packaging container 30 according to this embodiment and a sheet 130 for manufacturing the developed body thereof (not shown in this embodiment). In Figs. 15 to 17, the same reference numerals as those in the second embodiment are used to designate the same members as those in the second embodiment, and description of the same configurations and structures of the members will be omitted, and differences will be mainly described below.

[0058] As shown in Figs. 15 and 16, the packaging container 30 according to this embodiment includes two small plates, a first small plate 16a and a second small plate 16b, and a main storage section 21a having a larger storage capacity than the first small plate 16a and the second small plate 16b. In the packaging container 30, the first small plate 16a and the second small plate 16b are disposed above the main storage section 21a (in the direction of the arrow z). In addition, in the packaging container 30, the second small plate 16b is attached to the rear side of the first storage side wall 22L. In this embodiment, the main storage section 21a and the first small plate 16a are almost the same as the main storage section 21a and the small plate 16 according to the second embodiment. This embodiment is different from the second embodiment in that in addition to the configuration of the packaging container 20 according to the second embodiment, the second small plate 16b is provided. In the second small dish portion 16b, the same reference numerals are used to designate the same components as those in the small dish portion 16 of the second embodiment.

[0059] As shown in FIG. 17, the sheet 130 has a shape in which a second small plate portion 130b is added to a main storage portion 131 and a first small plate portion 130a similar to the sheet 120 in the second embodiment shown in FIG. 12. The second small plate portion 130b has the same shape as the first small plate portion 130a except that it does not have a protruding piece 26a. The first small plate portion 130a and the second small plate portion 130b are connected to each other at a portion where the first front plate 102La′ becomes the folded edge 36 that is continuous with the opening edge 24a when the packaging container 30 is completed. This portion is a folding line 133 in the sheet 130. A cut 137 is formed between the first protruding plates 103L on the extension line of the folding line 133.

[0060] In the sheet 130, the overlapping margin 139B is formed in a strip-like straight line along the folding line 106L in the first front plate 102La' of both the first small plate portion 130a and the second small plate portion 130b. Then, in both directions of the first small plate portion 130a and the second small plate portion 130b, it extends through the second front plate 102Ra' to the vicinity of the end of the second back plate 101Ra'. The folding lines 106L of the first small plate portion 130a and the second small plate portion 130b are the portions that become the first oblique sides 6L when the packaging container 30 is completed. The overlapping margin 139A is formed in parallel with the overlapping margin 139B at a position equidistant from the point P on both the first small plate portion 130a and the second small plate portion 130b, with the same length therebetween. When the deployed body 30' is completed, a part of the overlap margin 139A of both the first small plate portion 130a and the second small plate portion 130b is overlapped with a region along the folding line 106R of the second front plate 102Ra'. An adhesive or the like is applied to the overlap margins 139A and 139B.

[0061] Furthermore, in the sheet 130, the opening edge 24a of the first housing side plate 122L is provided with a step portion 132 that is missing an edge less than other positions on the opening edge 24a and the opening edge 24d of the first front side plate 123L. Furthermore, in the sheet 130, an arc-shaped cut 135 is formed in a position slightly closer to the cutout 129 than the center of the line segment of the fold line 128b in the first housing side plate 122L, the chord of which is perpendicular to the cutout and the arc faces the cutout 129. The portion of the cutout 135 that corresponds to the cutout is a fold line 138.

[0062] As in the second embodiment, both the first small dish portion 130a and the second small dish portion 130b of the sheet 130 are folded back along the fold line 104 so that the sides with the overlaps 139A, 139B form valleys. Then, the first back plate 101La and the first front plate 102La', as well as the second back plate 101Ra' and the second front plate 102Ra' are overlapped and bonded together with adhesive or the like attached to the overlaps 139A, 139B. In this manner, a development body (not shown) is manufactured from the sheet 130.

[0063] In the deployed body according to this embodiment manufactured in this manner, for both the first small dish portion 130a and the second small dish portion 130b, the first back plate 101La and the first front plate 102La' are bonded to each other in a band-shaped first adhesive region (not shown) along the first oblique side 6L among the opposing surfaces of the overlapped first back plate 101La and the first front plate 102La'. Also, the second back plate 101Ra' and the second front plate 102Ra' are bonded to each other in a band-shaped second adhesive region (not shown) along the second oblique side 6Ra among the opposing surfaces of the overlapped second back plate 101Ra' and the second front plate 102Ra'.

[0064] 17, the overlapping portions 139A and 139B of the sheet 130 are each linear. When the deployed body according to this embodiment is to be mechanically produced, the conveying direction of the paper material (sheet 130) is set to either direction of the double-headed arrow C3 shown in FIG. 17, and in the operation of applying adhesive or the like, the adhesive or the like can be applied in a line by a machine along the conveying direction to the linear overlapping portions 139A and 139B. Therefore, the deployed body according to this embodiment, and further the packaging container 30 according to this embodiment, are excellent in productivity.

[0065] A user of the packaging container who receives the unfolded body according to this embodiment can easily assemble the main storage section 21a and the first small plate section 16a in the same manner as in the second embodiment. After that, when the unassembled second small plate section 130b is folded at the fold line 133 so that it becomes a valley fold when viewed in the unfolded view of FIG. 17, it is designed to just climb over the step section 132. The surface on the mountain fold side of the folded fold line 133 becomes the folded side 36. Furthermore, the second small plate section 130b is assembled in the same manner as the packaging container 10 according to the first embodiment to obtain the second small plate section 16b. In this state, the second small plate section 16b is not stable because only the side that was the fold line 133 is connected to the first small plate section 16a and the lower part is free. However, since there is a tongue piece 34 formed by raising the notch 135 slightly outward at the position where the second bottom side 4R of the first small dish portion 16a overlaps on the outer surface of the first housing side wall 22L, the user can simply pinch the second bottom side 4R into the gap between the tongue piece 34 and the first housing side wall 22L, as shown in Fig. 16. The second bottom side 4R is locked by the tongue piece 34, so that the second small dish portion 16b is fixed to the outer surface of the first housing side wall 22L at two points, one above and one below. In this manner, the packaging container 30 according to this embodiment shown in Figs. 15 and 16 can be easily assembled from the developed body.

[0066] The packaging container 30 according to this embodiment has two small plates 15a, 15b consisting of a first small plate portion 16a and a second small plate portion 16b, so that, for example, side dishes such as two different kinds of dipping sauces with different flavors can be placed in each of the small plates 15a, 15b. A person can hold the peripheral wall 23 of the main storage portion 21a with one hand and pick up a main food 25a such as French fries stored in the main storage portion 21a with the other hand. The person can then dip the picked up main food 25a into the two kinds of side foods and spread it over it. Therefore, the person can easily eat without a stand such as a table, and can enjoy the different flavors of the two kinds of side foods.

[0067] [Fourth embodiment] Fig. 18 is a perspective view showing a packaging container 40 according to the fourth embodiment, and Fig. 19 is an exploded view from the front of the packaging container 40. In Fig. 18 and Fig. 19, as well as Fig. 20 and Fig. 21 described later, the same reference numerals as those in the first and second embodiments are used to denote the same components as those in the packaging container 10 and its deployed body 10' according to the first embodiment, and the packaging container 20 and its deployed body 20' according to the second embodiment, and thus descriptions of the same components, structures, etc. will be omitted, and differences will be mainly described below.

[0068] As shown in Fig. 18, the packaging container 40 according to this embodiment is composed of a container body 41 and a second small plate portion 16s. The container body 41 and the second small plate portion 16s are separate members. The container body 41 has a structure and configuration similar to that of the packaging container 20 according to the second embodiment. Meanwhile, the second small plate portion 16s is the same as that of the packaging container 10 according to the first embodiment. As shown in Fig. 19, the packaging container 40 according to this embodiment can be obtained by moving the second small plate portion 16s in the direction of arrow D and assembling it to the container body 41.

[0069] The developed body of the second small dish portion 16s and its manufacturing method, the developed view (sheet 110) of the second small dish portion 16s, and the method of assembling the developed body of the second small dish portion 16s are the same as those of the packaging container 10 according to the first embodiment, so please refer to the drawings and explanations in the first embodiment. Also, although there are differences in minor points, the manufacturing method of the developed body of the container body 41 and the assembly method of the container body 41 are also substantially the same as those of the packaging container 20 according to the second embodiment, so please refer to the drawings and explanations in the second embodiment.

[0070] 20 is a plan view (equivalent to a developed view) showing a sheet 140 for manufacturing a developed body (not shown in this embodiment) of the container body 41 of the packaging container 40 according to this embodiment. As shown in FIG. 20, the sheet 140 is composed of a main storage portion 141 and a small plate portion 140a similar to the sheet 120 in the second embodiment shown in FIG. 12. The small plate portion 140a differs from the small plate portion 110a in that the first back panel 101La" and the second back panel 101Ra" do not reach the notch 13B in the sheet 120, but are cut off at the retreat edge 45 perpendicular to the fold line 105. The main accommodation portion 141 also differs from the main accommodation portion 121 in that a pair of triangular cutouts 42 and a pair of slits 43 extending from the bottom corners of each of the cutouts 42 are provided near the cutouts 129 of the opening edges 24a, 24b of the first accommodation side plate 122Lb and the second accommodation side plate 122Rb. A very short cut 44 perpendicular to the slits 43 is provided at the end of each of the pair of slits 43.

[0071] By producing a development body (not shown) of the container body 41 from the sheet 140 shown in Fig. 20 by the method described in the second embodiment, and further assembling it, the container body 41 shown in Figs. 18 and 19 can be produced. Fig. 21 shows an enlarged perspective view of the upper part of the container body 41 in the packaging container 40 according to this embodiment. As shown in Fig. 21, the shape of the vicinity of the upper end of the container body 41 is different from that of the packaging container 20 according to the second embodiment. First, in the vicinity of the upper end of the container body 41, the vicinity of the upper ends of the first rear wall 1L' and the second rear wall 1R' are cut off by the receding edge 45, so that the upper ends (notches 129) of the first storage side wall 22L and the second storage side wall 22R are not reached.

[0072] Therefore, the front surfaces of the first storage side wall 22L and the second storage side wall 22R are exposed, and an insertion opening 46 appears in the gap between the first storage side wall 22L and the second storage side wall 22R and the first back wall 1L' and the second back wall 1R'. In addition, the notch 42, the slit 43, and the notch 44 are connected downward in this order at both ends of the left and right direction of the insertion opening 46. As shown in FIG. 19, when the second small plate portion 16s is moved in the direction of the arrow D and the first bottom side 4L and the second bottom side 4R are inserted into the insertion opening 46, it is guided by the notch 42 and proceeds through the slit 43 until it hits the notch 44. Then, the second small plate portion 16s is sandwiched and held by the entire area above the notch 44 in the gap between the first storage side wall 22L and the second storage side wall 22R and the first back wall 1L' and the second back wall 1R'. Therefore, in the packaging container 40 of this embodiment, the second small plate portion 16s is fixed firmly to the container body 41.

[0073] The packaging container 40 according to this embodiment has two small plates 15a, 15b consisting of a first small plate portion 16f and a second small plate portion 16s, so that two types of side dishes can be placed on the small plates 15s, 15f, as in the packaging container 30 according to the third embodiment, and the eater can easily eat without a stand such as a table, and can enjoy the different tastes of the two types of side dishes. In particular, in the packaging container 40 according to this embodiment, the small plates 15s and 15f face in the same direction, so that the user of the packaging container 40 can easily place two types of side dishes, and the eater can easily dip them into the main food. In addition, in the packaging container 40 according to this embodiment, the second small plate portion 16s can be removed from the container body 41, so that the eater can eat while placing the second small plate portion 16s on a stand such as a table.

[0074] In the packaging container 40 according to the present embodiment, the container body 41 and the second small dish portion 16s may be manufactured from the sheet 140 shown in FIG. 20 and the sheet 110 shown in FIG. 4 using different paper materials, but the sheets 140 and 110 may be formed from a single piece of paper material to manufacture both of the developed bodies. In this case, by arranging the overlaps 109A and 109B of the sheet 140 and the overlap 109 of the sheet 110 so that they are parallel to each other, adhesive or the like can be applied in a line by a machine device along the conveying direction, so that both developed bodies can be manufactured at the same time, which is excellent in productivity. Furthermore, in this case, if the overlap 109 of the sheet 110 is positioned on the same line as the overlap 109A or overlap 109B of the sheet 140, the number of lines to which adhesive or the like is applied at one time can be up to two, which is even more excellent in productivity. For example, a sheet of the second small plate portion 16s can be placed at the position of the second small plate portion 130b on the sheet 130 in Figure 17 so that the glue direction is aligned, and both deployment bodies can be manufactured at the same time, and then the deployment bodies can be separated at their boundary line (lines 137 and 133 on the sheet 130 in Figure 17) to produce individual deployment bodies.

[0075] The four embodiments described above are merely representative examples of the present invention, and the present invention is not limited to these embodiments. For example, in the above embodiments, the number of small dish parts is one or two, but the present invention is not limited to this, and three or more small dish parts may be provided. Regarding the number and thickness of the flaps, although only one or two flaps of approximately the same thickness are provided, three or more flaps may be provided, and the thickness may be wider or narrower.

[0076] In the above embodiment, the angle θ between the first base and the first oblique side L , and the angle θ between the second base and the second hypotenuse R Although an example of the angle θ is given, the angle is not limited to 45 degrees. L The angle θ R If they are approximately equal, then (θ L ≒θ R ) Good. L ≒θ RIf the folded first and second base edges are returned to their original flat shape, the overlaps that will become the first adhesive region and the overlaps that will become the second adhesive region will be parallel or in a straight line. L ≒θ R The packaging container and its development body that satisfy the above can be produced mechanically by aligning the conveying direction of the paper material with the extending direction of the overlapping portion. L ≒θ R A packaging container and its deployment body that satisfy the above condition are excellent in productivity. L ≒θ R Setting the angle to ≒ 45 degrees is preferable because it makes it easier to shape and easier to design. L The angle θ R The term "approximately equal" means that some degree of error during manufacturing is allowed.

[0077] In the second to fourth embodiments, the main storage section and at least one small dish section are made of a single sheet of paper, but the present invention is not limited to this, and the main storage section and the small dish section may be separate. For example, in the fourth embodiment, the container body does not include a small dish section, and only the main storage section is provided, to which a separate small dish section is connected, also falls within the scope of the present invention. The method of connecting the main storage section and the separate small dish section is not limited to the configuration of the fourth embodiment, and any conventionally known locking or fixing method may be used.

[0078] In the above embodiment, the first and second front walls of the packaging container (particularly the small dish portion when the main storage portion is provided) are connected to each other, but the present invention is not limited to this, and the first and second front walls may not be connected to each other, i.e., the container may not have a front vertical side. Similarly, the first and second front plates of the deployed body of the packaging container may not be connected to each other, i.e., the container may not have a front vertical side. In these cases, the reference point (point Q in the figure) that is the starting point of the first oblique side, the second oblique side, and the protruding side may be located at one end (point P in the figure) where the first base side and the second base side are common.

[0079] In the above embodiment, the overlapping margin of each sheet is formed in a fixed direction (the direction of the fold line that forms the first oblique side), but the overlapping margin may be formed in a direction perpendicular to these (the direction of the fold line that forms the second oblique side). In this case, by making the conveying direction of the sheet perpendicular to these directions, it is possible to apply adhesive or the like in a line to the overlapping margin by a mechanical device. Note that, when changing the direction of the overlapping margin in the first embodiment, it is preferable to provide a flap 111L on the second back panel 101R.

[0080] In addition, those skilled in the art may implement various modifications in accordance with conventionally known knowledge without departing from the gist of the present invention. As long as such modifications still provide the configuration of the packaging container or the deployed body of the packaging container of the present invention, they are of course included in the scope of the present invention. [Explanation of symbols]

[0081] 1L, 1L′: 1st back wall, 1R, 1R′: 2nd back wall, 2L: 1st front wall, 2R: 2nd front wall, 3L: 1st protruding wall, 3R: 2nd protruding wall, 4L: 1st 1 base, 4R: 2nd base, 5B: dorsal vertical side, 5F: front vertical side, 6L: 1st hypotenuse, 6R: 2nd hypotenuse, 7: projecting side, 8L: 1st edge, 8R :2nd edge, 9L, 9LA: 1st adhesive area, 9R, 9RA: 2nd adhesive area, 9RB: 3rd adhesive area, 9LB: 4th adhesive area, 10, 20, 30, 40: Packaging container, 10', 20': Developed body, 11L: Flap piece, 11R: Upper hypotenuse, 12L, 12La: Left vertical side, 12R: Right Side vertical side, 13B, 42, 129, 142: Notch, 13F: Knob, 14L: 1st front wall hypotenuse, 14R: 2nd front wall hypotenuse, 15, 15a , 15b, 15s, 15f: Small plate, 16: Small plate part, 16a, 16f: 1st small plate part, 16b, 16s: 2nd small plate part, 20: Packaging container, 21: Main Storage part, 22L: First storage side wall, 22R: Second storage side wall, 23: Peripheral wall, 23F: Front storage peripheral wall, 23L: First front side wall, 23R: Second front side wall , 24: Upper opening, 24a, 24b, 24c, 24d: Opening edge, 25a: Main food, 25b: Sub-food, 26a: Projecting piece, 26b: Hole, 28 a, 28b, 28c, 28d: boundary line, 30: packaging container, 34: tongue, 36: folded edge, 40: packaging container, 41: container body, 42: notch, 43, 125c: slit, 44, 125d, 127, 135, 137: notch, 45: retreating edge, 46: insertion port, 104, 105, 105a, 106L, 106R, 128a to f, 133, 138: folding line, 101L, 101La, 101La″: first back plate, 101R, 101Ra, 101Ra′, 101Ra″: second back plate, 102L, 102La, 102La′: first front plate, 102R, 102Ra, 102 Ra′: second front plate, 103L: first protruding plate, 103R: second protruding plate, 109, 109A, 109B, 139A, 139B: margin, 110, 120, 130, 140: sheet (equivalent to development), 110a, 140a: small plate part, 111L: flap, 112L, 142: side, 121, 131, 141: main storage part, 122L, 122La, 122L: first storage side plate, 122R, 122Rb: second storage side plate, 123L: first front side plate, 123R: second front side plate, 123D: overlapping side plate, 125a: insertion piece, 125b: narrowed part, 128a, 128b, 128c,128d, 128e, 128f: fold lines, 128d′: edge, 130a: first small plate portion, 130b: second small plate portion, 132: step portion,

Claims

1. a first back wall having a first base and a back vertical side having one end common to the first base; A second back wall having a second base side and the back vertical side having one end in common with the back vertical side, and folded forward from the first back wall at the back vertical side; a first front wall folded forward at the first base and overlapped with the first back wall; a second front wall folded forward at the second base and overlapped with the second back wall; a first protruding wall having a triangular shape and three sides: a first oblique side extending obliquely upward along the front surface of the first back wall from one of the reference points; a protruding side rising from the back vertical side to the front from the reference point; and a first edge side connecting the end points of the first oblique side and the protruding side; and a first protruding wall having a triangular shape and three sides, the first oblique side being interposed between the first front wall and the second front wall when the first front wall and the second front wall are connected, and the other end of a front vertical side having one end common to the first base and the second base is used as a reference point when the first front wall and the second front wall are not connected, and the other end of the first base and the second base is used as a reference point. a second protruding wall having a triangular shape including three sides, namely, a second hypotenuse extending obliquely upward along a front surface of the second back wall starting from the reference point, the protruding side interposed between the first protruding wall, and a second edge side connecting the end points of the second hypotenuse and the protruding side, an angle between the first base and the first oblique side and an angle between the second base and the second oblique side are substantially equal; the first rear wall and the first front wall are bonded to each other in a band-shaped first bonding region along the first oblique side of the opposing surfaces of the first rear wall and the first front wall that are overlapped with each other, A packaging container, in which the second rear wall and the second front wall are adhered to each other at a band-shaped second adhesive region along the second oblique side of the opposing surfaces of the overlapping second rear wall and the second front wall.

2. A packaging container as described in claim 1, comprising one or more small dish portions consisting of the packaging container as described in claim 1, and a main storage portion having a larger storage capacity than the small dish portions, and the small dish portions are arranged above the main storage portion.

3. The main storage section includes at least a first storage side wall, a second storage side wall, and a front storage peripheral wall, and the first storage side wall, the second storage side wall, and the front storage peripheral wall are connected in this order in an annular shape to form a peripheral wall of the main storage section, The second storage side wall and the second front wall are connected via an opening edge that constitutes a part of an upper opening of the main storage portion, and the second storage side wall and the second rear wall are folded back at the opening edge to overlap each other, and the first storage side wall and the first rear wall are overlapped, At least one of the first front wall and the first rear wall has a side along a boundary line between the first storage side wall and the front storage peripheral wall, and is provided with a protruding piece protruding from the side, The packaging container according to claim 2 , wherein the boundary line is provided with a hole into which the protruding piece fits and is locked.

4. A development of a packaging container formed by folding and gluing a single sheet, A first back panel having a first base and a back vertical side as a fold line having one end common to and perpendicular to the first base; A second back plate having a second base side on an extension line of the first base side and the back vertical side; a first front panel folded forward at the first base and overlapped with the first back panel; a second front panel folded forward at the second base and overlapped with the second back panel; When the first front panel and the second front panel are connected, the first front panel and the second front panel are interposed between them, and the other end of the front vertical side having one end common to the first base and the second base is used as a reference point. When the first front panel and the second front panel are not connected, one end of the first base and the second base is used as a reference point. A first protruding plate having a triangular shape consisting of three sides: a first oblique side as a folding line between the first front panel and the first back panel surface that extends diagonally upward from one of these reference points, a protruding side as a folding line that similarly starts from the reference point and extends in the same direction in front of the back vertical side, and a first edge side connecting the end points of the first oblique side and the protruding side; Similarly, a second oblique side as a folding line between the second front plate and the second back plate surface extending diagonally upward from the reference point, the protruding side shared with the first protruding plate, and a second edge side connecting the end points of the second oblique side and the protruding side. A triangular second protruding plate having three sides, an angle between the first base and the first oblique side and an angle between the second base and the second oblique side are substantially equal; The first back plate and the first front plate are bonded to each other in a band-shaped first bonding region along the first oblique side of the opposing surfaces of the overlapped first back plate and the first front plate, An unfolded body of a packaging container, in which the second back plate and the second front plate are adhered to each other at a second adhesive region in a band shape along the second oblique side on the opposing surfaces of the overlapping second back plate and the second front plate.

Images