JP7810054B2 - Paper and packaging containers - Google Patents

Description

The present invention relates to paperboard containers and packaging containers.

Packaging containers are known that have a pouch filled with food or the like and a paper container that houses the pouch (see, for example, Patent Documents 1 and 2). The paper container refers to an outer box made of paper or the like. The paper container (sleeve) disclosed in Patent Document 1 has perforated tear lines that allow it to be cut into a desired shape. Such paper containers are sometimes provided with a zipper with parallel perforations to make cutting easier.

JP 2010-241447 A Japanese Patent Application Publication No. 9-77135

In order to create a triangular shape when viewed from the side, as in the paper container (outer box) disclosed in Patent Document 2, fold lines are provided in the paper material that makes up the sides of the paper container, and the paper material is folded so that an acute angle is formed at the fold lines. However, if a zipper section is provided in the part that is folded so that an acute angle is formed, the perforations in the zipper section may unintentionally break when the paper material is folded.

The present invention aims to provide paperboard and packaging containers that can prevent the perforations in the zipper section from unintentionally breaking.

In order to achieve the above-mentioned object, the paper container of the present invention has a tubular portion extending in the height direction and a bottom plate portion provided at one end of the tubular portion in the height direction, the tubular portion having a front plate portion extending from an edge of the bottom plate portion on one side in the front-to-rear direction intersecting the height direction to the other side in the height direction, a rear plate portion extending from an edge of the bottom plate portion on the other side in the front-to-rear direction to the other side in the height direction, and a pair of side plate portions extending from respective edges of the bottom plate portion on both sides in the width direction intersecting the height direction and the front-to-rear direction to the other side in the height direction and connecting the front plate portion and the rear plate portion, the pair of side plate portions having a first side plate fold curve extending in the height direction in the middle part in the front-to-rear direction of the other side in the height direction, and when the pair of side plate portions are folded at the first side plate fold curve, the front plate portion The edge on the other side in the height direction and the edge on the other side in the height direction of the rear panel are close to each other, and the shape as viewed from the width direction gradually shortens in the front-to-rear direction from one side to the other in the height direction, becoming pointed on the other side in the height direction, the tubular portion has a zipper portion provided around the entire circumference in the middle part in the height direction, and the side zipper portions of the zipper portion provided on the pair of side panel portions are provided so as to intersect with the first side panel fold curve, and the shape as viewed from the width direction gradually extends diagonally from one side to the other in the height direction from the end on one side in the front-to-rear direction of the side panel toward the position of the first side panel fold curve, and gradually extends diagonally from the other side to one side in the height direction from the position of the first side panel fold curve toward the end on the other side in the front-to-rear direction of the side panel.

To achieve the above objective, the packaging container of the present invention comprises the above-mentioned paper container and a pouch filled with food and contained in the paper container.

This invention prevents the perforations in the zipper section from unintentionally breaking.

1 is a perspective view showing a packaging container in a first state according to an embodiment. FIG. 10 is a perspective view showing the packaging container in a state where the paper container is in a second state and the lid plate portion is open. FIG. FIG. 1 is a plan view of a paper material. FIG. 2 is a front view of FIG. 1; FIG. 2 is a rear view of FIG. 1; FIG. 2 is a side view of FIG. 1; 10 is a perspective view showing the packaging container in a state where the paper container is in a second state and the lid plate portion is closed. FIG. FIG. 8 is a side view of FIG. 7. FIG. 1 is a perspective view of a paper container cut at the zipper portion. This is a perspective view of the lower part of the paper container with the triangular part folded inward. This is a perspective view of the lower part of the paper container with the triangular part folded outward. This is a diagram showing a large number of emergency food kits stored in boxes.

Hereinafter, a paperboard container and a packaging container according to an embodiment of the present invention will be described with reference to FIGS. 1 to 12.
A packaging container 1 according to this embodiment shown in Figures 1 and 2 is provided in an emergency food (food stockpile) set 11. The packaging container 1 has a pouch 2 (see Figure 2) filled with food and a paper container 3 that houses the pouch 2. The paper container 3 is a paper outer box that houses the pouch 2. In the packaging container 1 of this embodiment, two pouches 2 are housed in one paper container 3. Figure 1 shows the packaging container 1 in a state where the cover plate 33 of the paper container 3 is closed. Figure 2 shows the packaging container 1 in a state where the cover plate 33 of the paper container 3 is open.

The pouch 2 is, for example, a substantially rectangular bag made of a resin film laminate, and three or four sides of the resin film laminate are heat-sealed.
For example, one pouch 2 is filled with pre-gelatinized rice, and the other pouch 2 is filled with soup or the like. The pre-gelatinized rice filled in the pouch 2 may be cooked by pouring hot water into the inside of the pouch 2. The soup filled in the pouch 2 may be cooked by pouring hot water into the inside of the pouch 2, or may be something that can be eaten without pouring hot water or water into the inside of the pouch 2.

The paper container 3 is assembled by folding a single sheet of paper material 4 shown in FIG. 3 and gluing together necessary portions.
The folding carton 3 has a tubular portion 31, a bottom plate portion 32, and a cover plate portion 33. The direction in which the tubular portion 31 extends, i.e., the axial direction of the tubular portion 31, is referred to as the height direction. A direction perpendicular to the height direction is referred to as the left-right direction, and a direction perpendicular to the height direction and the left-right direction is referred to as the front-rear direction. The left-right direction corresponds to the width direction in the claims. In the drawings, the left-right direction is indicated by arrow X, the front-rear direction is indicated by arrow Y, and the height direction is indicated by arrow Z. One side in the height direction is referred to as the bottom side, and the other side is referred to as the top side. One side in the front-rear direction is referred to as the front side, and the other side is referred to as the back side. In the left-right direction, the right and left sides when facing the front side in the front-rear direction are simply referred to as the right and left sides.
The bottom plate 32 is connected to one end in the height direction of the tubular part 31, i.e., the lower end 311. The cover plate 33 is connected to the other end in the height direction of the tubular part 31, i.e., the upper side. In the description of the paper container 3, the upper end is sometimes referred to as the top 36.

The bottom plate portion 32 is disposed with its plate surface facing the height direction. When viewed from the height direction, the bottom plate portion 32 has a long rectangular shape extending in the left-right direction. The bottom plate portion 32 in this embodiment is made up of multiple connected pieces of paper.
The cylindrical portion 31 has a front plate portion 5, a rear plate portion 6, and a pair of side plate portions 7. The front plate portion 5, one side plate portion 7, the rear plate portion 6, and the other side plate portion 7 are arranged in this order in the circumferential direction of the cylindrical portion 31. The circumferential direction is the direction around the axis of the cylindrical portion 31. Adjacent plate portions in the circumferential direction of the cylindrical portion 31 are continuous. The cylindrical portion 31 has an open upper end portion 312.

As shown in Figures 1, 2, and 4, the front plate portion 5 extends upward from a front edge portion 321 of the bottom plate portion 32. As shown in Figures 1, 2, and 5, the rear plate portion 6 extends upward from a rear edge portion 322 of the bottom plate portion 32. As shown in Figures 1, 2, and 6, one side plate portion 7 extends upward from a left edge portion 323 of the bottom plate portion 32. The other side plate portion 7 extends upward from a right edge portion 324 (see Figures 1 and 2) of the bottom plate portion 32. Hereinafter, one side plate portion 7 may be referred to as the left side plate portion 7, and the other side plate portion 7 may be referred to as the right side plate portion 7.
The front plate 5 and the rear plate 6 are flat. The rear plate 6 has a rectangular surface. The front plate 5 has the same rectangular shape as the rear plate 6, with a notch 51 (see FIG. 2 ) formed in the surface. The notch 51 is formed on the upper side of the front plate 5.

The pair of side plate portions 7 are symmetrical in the left-right direction. The side plate portions 7 can be in both a folded state shown in Figure 1 and an unfolded state shown in Figure 2. The folded state of the side plate portions 7 is referred to as the first state, and the unfolded state of the side plate portions 7 is referred to as the second state. In the second state, the plate surfaces of the side plate portions 7 face in the left-right direction.

As shown in Figures 1, 2, and 6, each of the pair of side panels 7, 7 has a first side panel fold curve 71, a second side panel fold curve 72, a third side panel fold curve 73, and a fourth side panel fold curve 74. The side panel 7 can be bent at each of the fold curves 71-74. The first side panel fold curve 71 extends linearly in the vertical direction at the center of the side panel 7 in the front-to-rear direction. The first side panel fold curve 71 extends from the midpoint of the height of the side panel 7 to the upper end. The second side panel fold curve 72 extends across the entire front-to-rear direction at the midpoint of the height of the side panel 7. The second side panel fold curve 72 is positioned above the lower end 711 of the first side panel fold curve 71 on the side panel 7. The second side panel fold curve 72 intersects with the first side panel fold curve 71. The third side panel fold line 73 extends from the lower end 711 of the first side panel fold line 71 to the front, lower corner of the side panel portion 7. The fourth side panel fold line 74 extends from the lower end 711 of the first side panel fold line 71 to the rear, lower corner of the side panel portion 7.

The left side panel 7 is bent so that the first side panel fold curve 71, the third side panel fold curve 73, and the fourth side panel fold curve 74 protrude to the right. The right side panel 7 is bent so that the first side panel fold curve 71, the third side panel fold curve 73, and the fourth side panel fold curve 74 protrude to the left. In other words, the pair of side panels 7, 7 are bent so that the first side panel fold curve 71, the third side panel fold curve 73, and the fourth side panel fold curve 74, respectively, protrude toward the inside of the folding carton 3. The second side panel fold curve 72 will be described later.

When the pair of side panels 7, 7 are bent as described above, the portion in front of the first side panel fold line 71 approaches the portion behind the first side panel fold line 71. The first side panel fold line 71 is located on the upper side of the side panel 7, and below the first side panel fold line 71 is a triangular portion 76 surrounded by the third side panel fold line 73, the fourth side panel fold line 74, and the lower edge of the side panel 7. Therefore, the upper side of the side panel 7, where the first side panel fold line 71 is located, is bent more than the lower side. As a result, the shape of the bent side panel 7, as seen from the left-right direction, becomes gradually shorter in the front-to-rear direction from bottom to top, becoming a pointed shape, i.e., a roughly triangular shape with an upwardly pointed tip, as shown in Figure 6 . The roughly triangular shape includes not only triangles but also trapezoids whose upper base is shorter than their lower base. The roughly triangular shape of the side panel 7 as seen from the left-to-right direction as described above is the first state. In the first state, the shape of the paper container 3 when viewed from the left and right is roughly triangular with a pointed upwards edge.

As shown in Figures 1 and 4, in the first state, the front plate 5 gradually slopes rearward from the bottom to the top. The rear plate 6 gradually slopes frontward from the bottom to the top. In the first state, the upper edge 54 of the front plate 5 and the upper edge 61 of the rear plate 6 may be in contact with each other or may be close to each other with a gap. When the upper edge 54 of the front plate 5 and the upper edge 61 of the rear plate 6 are in contact with each other, the shape of the folding carton 3 viewed from the left and right becomes a triangle pointed upward. When the upper edge 54 of the front plate 5 and the upper edge 61 of the rear plate 6 are close to each other with a gap, the shape of the folding carton 3 viewed from the left and right becomes a trapezoid pointed upward.
2, in the second state, the front plate 5 and the rear plate 6 extend substantially perpendicularly in the height direction from the bottom plate 32. In the second state, the upper edge 54 of the front plate 5 and the upper edge 61 of the rear plate 6 are separated, and the upper end 312 of the tubular portion 31 is open. In the second state, the side plate 7 and the folding carton 3 have a rectangular shape when viewed from the left and right.

As shown in Figures 1 to 3, the cover plate portion 33 is provided continuous with the upper edge portion 61 of the rear plate portion 6. A first cover plate fold curve 331 extending in the left-right direction is provided at the boundary between the cover plate portion 33 and the rear plate portion 6. The cover plate portion 33 and the rear plate portion 6 can be bent at the first cover plate fold curve 331. A second cover plate fold curve 332 extending in the left-right direction is provided on the cover plate portion 33 at a position away from the first cover plate fold curve 331. The side of the cover plate portion 33 closer to the first cover plate fold curve 331 than the second cover plate fold curve 332 is referred to as the first cover plate portion 333, and the side away from the first cover plate fold curve 331 is referred to as the second cover plate portion 334. The first cover plate portion 333 and the second cover plate portion 334 can be bent at the second cover plate fold curve 332. The distance between the first cover plate fold line 331 and the second cover plate fold line 332 is approximately the same as the dimension of the bottom plate portion 32 in the front-to-rear direction.

When the cover plate 33 is bent forward and downward along the first cover plate fold line 331 in the first state, it overlaps the front surface of the front plate 5. At this time, the cover plate 33 is flat and not bent along the second cover plate fold line 332. As shown in Figures 7 and 8, when the cover plate 33 is bent forward along the first cover plate fold line 331 in the second state and the second cover plate 334 is bent downward along the second cover plate fold line 332, the first cover plate 333 is positioned above and between the front plate 5 and the rear plate 6, and the second cover plate 334 overlaps the front surface of the front plate 5.

The cover plate 33 has a latching portion 335 on its lower side when folded along the first cover plate fold line 331 and overlapped with the front surface of the front plate 5. The latching portion 335 is a convex portion that protrudes by forming an arc-shaped notch 336 in the cover plate 33 and pushing out the notch 336. The front plate 5 has a first latching portion 52 into which the latching portion 335 of the cover plate 33 overlapping the front surface of the front plate 5 can be inserted in the first state, and a second latching portion 53 into which the latching portion 335 of the cover plate 33 overlapping the front surface of the front plate 5 can be inserted above the space between the front plate 5 and the rear plate 6 and into which the latching portion 335 of the cover plate 33 overlapping the front surface of the front plate 5 can be inserted in the second state. The first latching portion 52 and the second latching portion 53 are linear notches formed in the front plate 5.

As described above, the folding carton 3 is produced by folding a single sheet of paper material 4 and gluing together the necessary portions. As shown in Figure 3, before the folding carton 3 is assembled, the front panel 5 and the left side panel 7 are adjacent to each other via a fold line 41, the left side panel 7 and the rear panel 6 are adjacent to each other via a fold line 42, and the rear panel 6 and the right side panel 7 are adjacent to each other via a fold line 43. A glue tab 45 is provided on the right side of the front panel 5 via a fold line 44. The glue tab 45 is glued to the vicinity of the front edge of the right side panel 7.
The cover plate portion 33 is adjacent to the rear plate portion 6 via a first cover plate folding line 331 .
As described above, the bottom plate portion 32 is made up of multiple connected pieces of paper. The pieces of paper that make up the bottom plate portion 32 are a first piece 411 adjacent to the lower edge of the front plate portion 5 via a fold line 46, a second piece 412 adjacent to the lower edge of the rear plate portion 6 via a fold line 47, a third piece 413 adjacent to the lower edge of the left side plate portion 7 via a fold line 48, and a fourth piece 414 adjacent to the lower edge of the right side plate portion 7 via a fold line 49. The first piece 411, the second piece 412, the third piece 413, and the fourth piece 414 each partially or entirely overlap with the adjacent pieces to make up the bottom plate portion 32.

As shown in FIGS. 1 to 3 , a zipper portion 8 is formed around the entire periphery of the intermediate portion in the height direction of the tubular portion 31. The zipper portion 8 is formed by forming two parallel perforations 86, 86 spaced apart. The two perforations 86, 86 are arranged one above the other. The zipper portion 8 can divide the tubular portion 31 into two parts in the height direction by cutting out the portion between the parallel perforations 86, 86. Of the zipper portion 8, the portion provided on the front plate portion 5 is referred to as a front zipper portion 81, the portion provided on the back plate portion 6 is referred to as a back zipper portion 82, and the portions provided on the pair of side plates 7, 7 are referred to as side zipper portions 83.
As shown in FIGS. 2, 3 and 5, the front zipper portion 81 and the rear zipper portion 82 extend linearly in the left-right direction.

As shown in Figures 1-3 and 7, the side zipper portion 83 intersects with the first side panel fold line 71. The side zipper portion 83 has a mountain-like shape, with the first side zipper portion 831 extending gradually upward from the front edge of the side panel 7 toward the position of the first side panel fold line 71 in the center in the front-to-rear direction, and the second side zipper portion 832 extending gradually upward from the rear edge of the side panel 7 toward the position of the first side panel fold line 71. The first side zipper portion 831 and the second side zipper portion 832 are symmetrical in the front-to-rear direction. In this embodiment, both the first side zipper portion 831 and the second side zipper portion 832 extend linearly, and the side zipper portion 83 has an inverted V shape.

When the side plate 7 is folded along the first side fold line 71, the first side zipper portion 831 and the second side zipper portion 832 move close to each other. When the side plate 7 is folded, the center portion in the front-to-back direction relative to the front and rear edges, i.e., the portion where the first side fold line 71 is provided, moves left and right. On the right side plate 7, the first side fold line 71 moves leftward, and on the left side plate 7, the first side fold line 71 moves rightward. The first side zipper portion 831 and the second side zipper portion 832 extend diagonally relative to the direction in which the first side fold line 71 moves, i.e., the direction in which the side plate 7 is folded.

The second side panel fold line 72 is located along a line connecting the front and rear ends of the perforation 86 below the side zipper portion 83. The triangular portion of the side panel portion 7 surrounded by the perforation 86 below the side zipper portion 83 and the second side panel fold line 72 is referred to as the triangular portion 75.

As shown in Figure 3, the overlap flap 45 is also provided with an overlap flap zipper portion 84 having the same shape as the side zipper portion 83 of the overlapping right side plate portion 7. The overlap flap zipper portion 84 is adjacent to the front zipper portion 81. A notch 85 is provided between the overlap flap zipper portion 84 and the front zipper portion 81. The overlap flap zipper portion 84 and the front zipper portion 81 are adjacent to each other but are not continuous.
The zipper portion 8 is cut by grasping and pulling the left side of the notch 85, i.e., the right end portion 811 of the front zipper portion 81, thereby cutting the perforations 86, 86 and removing the zipper portion 8. As shown in Figure 9, once the zipper portion 8 is cut, the paper container 3 is divided into an upper portion and a lower portion of the zipper portion 8. The portion of the paper container 3 above the zipper portion 8 is referred to as the upper portion 34, and the lower portion is referred to as the lower portion 35.

The emergency food set 11 is stored with two pouches 2 housed inside a paper container 3, the paper container 3 in the first state, and the cover plate portion 33 of the paper container 3 locked with the first locking portion 52. The emergency food set 11 can be eaten after cooking by pouring hot water or water into the pouches 2. In the following explanation, hot water is poured into the pouches 2 for cooking.

When preparing the emergency food set 11, first, as shown in Figure 2, the cover plate 33 is removed from the first locking portion 52. One or two pouches 2 are removed from inside the paper container 3. The side plate portions 7 are expanded to place the paper container 3 in the second state. In the second state, the tubular portion 31 of the paper container 3 becomes a substantially rectangular parallelepiped.
The removed pouch 2 is opened and the food inside the pouch 2 is returned to the inside of the paper container 3 without spilling. Hot water is poured into the opened pouch 2, and the food inside the pouch 2 is cooked for a predetermined time.
For example, if one pouch 2 is filled with instant rice and the other pouch 2 is filled with soup that does not require hot water, hot water is added only to the pouch 2 filled with instant rice. By arranging the pouch 2 of instant rice filled with hot water and the pouch 2 of soup side by side inside the paper container 3, the soup can also be warmed by the heat generated when the instant rice is cooked.

After pouring hot water into the pouch 2, as shown in Figures 7 and 8, the cover plate 33 is folded along the first cover plate fold line 331 and the second cover plate fold line 332, the first cover plate 333 is placed above the space between the front plate 5 and the rear plate 6, the second cover plate 334 is placed on the front surface of the front plate 5, and the latched portion 335 of the cover plate 33 is inserted into the second latching portion 53. This maintains the paper container 3 in the second state and the cover plate 33 covers the top of the pouch 2, improving heat retention during cooking.

After a predetermined time has passed and the food in the pouch 2 has been completely heated, the zipper 8 is cut off and the upper part 34 of the paper container 3 is removed. The lower part of the pouch 2 is housed in the lower part 35, and the upper part is exposed and ready to eat.
As shown in Figure 10, after removing the upper portion 34 (see Figure 9) of the folding carton 3, the triangular portion 75 of the side plate portion 7 of the lower portion 35 can be folded inward at the second side plate folding line 72. This reinforces the side plate portion 7 that has been opened in the second state, and allows the lower portion 35 of the folding carton 3 to be maintained in the second state. Furthermore, by placing one pouch 2 in front of and one pouch 2 behind the inwardly folded triangular portion 75, the positions of the two pouches 2 are stabilized.
11, after removing the top portion 34 (see FIG. 9) of the paper container 3, the triangular portion 75 of the side panel 7 can be folded outward along the second side panel folding line 72. This allows the triangular portion 75 to protrude outward and be used as a handle. The triangular portion 75 can be gripped even when the food in the pouch 2 (see FIG. 10) is hot.

As shown in Figure 12, when storing a large number of emergency food sets 11 in a box 12 or the like, it is possible to store many emergency food sets 11 in a small space by storing them so that the front-to-back direction is the up-to-down direction, and the bottom plate portion 32 and the top portion 36 of the paper container 3 are arranged alternately in the up-to-down direction.

Next, the functions and effects of the packaging container 1 and the paper container 3 according to this embodiment will be described with reference to the drawings.
In the packaging container 1 and the paper container 3 according to this embodiment, the side zipper portion 83 provided on the side plate 7 of the zipper portion 8 has a mountain-shaped configuration in which a first side zipper portion 831 extends gradually upward from the front edge of the side plate 7 toward the position of the first side plate fold line 71 in the center in the front-to-rear direction, and a second side zipper portion 832 extends gradually upward from the rear edge of the side plate 7 toward the position of the first side plate fold line 71. The first side zipper portion 831 and the second side zipper portion 832 extend obliquely to the direction in which the first side plate fold line 71 moves, i.e., the direction in which the side plate 7 is folded. Therefore, when the side plate portion 7 is folded at the first side plate fold line 71, a force is unlikely to act in a direction that would break the perforations 86, 86 of the side zipper portion 83, so that unintentional breaking of the perforations 86, 86 of the side zipper portion 83 can be prevented.

In the paper container 3 according to this embodiment, the side panel 7 has a second side panel fold line 72 that runs along a line connecting the front and rear ends of the perforation 86 below the side zipper section 83. As a result, after removing the top section 34 of the paper container 3, the triangular section 75 of the side panel 7 of the bottom section 35 can be folded inward at the second side panel fold line 72 to reinforce the side panel 7 that has been unfolded in the second state, maintaining the bottom section 35 of the paper container 3 in the second state. Furthermore, by placing one pouch 2 in front of and one pouch 2 behind the folded-in triangular section 75, the positions of the two pouches 2 can be stabilized. Furthermore, by folding the triangular section 75 outward at the second side panel fold line 72, the triangular section 75 protrudes outward and can be used as a handle.

In the paper container 3 according to this embodiment, the front panel 5 is provided with a first locking portion 52 into which the locked portion 335 of the cover panel 33 overlapping the front surface of the front panel 5 can be inserted when in the first state, and a second locking portion 53 into which the locked portion 335 of the cover panel 33 can be inserted when it overlaps the front surface of the front panel 5 and is located above the space between the front panel 5 and the rear panel 6 when in the second state. This allows the cover panel 33 locked to the first locking portion 52 to maintain the paper container 3 in the first state, and the cover panel 33 locked to the second locking portion 53 to maintain the paper container 3 in the second state.

The above describes embodiments of the packaging container and paper carton according to the present invention, but the present invention is not limited to the above embodiments and can be modified as appropriate within the scope of the spirit thereof.
For example, in the above embodiment, two pouches 2 are housed in the paper container 3, but one or three or more pouches 2 may be housed therein. The paper container 3 of the above embodiment may also be used for a paper container that does not house a pouch 2.
In the above embodiment, first side zipper portion 831 and second side zipper portion 832 of side zipper portion 83 each extend linearly, but they may also extend in a curved line. For example, side zipper portion 83 may be arc-shaped.

In the above embodiment, the side panel 7 has a second side panel fold line 72 along a line connecting the front and rear ends of the perforation 86 below the side zipper section 83, and the triangular section 75 of the side panel 7 is folded inward or outward at the second side panel fold line 72, but the second side panel fold line 72 does not necessarily have to be provided.

In the above embodiment, the front plate 5 is provided with the first locking portion 52 into which the locked portion 335 of the cover plate 33 overlapping the front surface of the front plate 5 in the first state can be inserted, and the second locking portion 53 into which the locked portion 335 of the cover plate 33 above the space between the front plate 5 and the rear plate 6 and overlapping the front surface of the front plate 5 can be inserted in the second state, but one or both of the first locking portion 52 and the second locking portion 53 may not be provided. The form of the locking portion that locks the cover plate 33 to the front plate 5 may be other than that described above.
In the above embodiment, the paper container 3 is provided with the cover plate portion 33, but the cover plate portion 33 does not have to be provided.

REFERENCE SIGNS LIST 1 Packaging container 2 Pouch 3 Paper container 5 Front plate portion 6 Rear plate portion 7 Side plate portion 8 Zipper portion 31 Cylindrical portion 32 Bottom plate portion 33 Lid plate portion 52 First locking portion 53 Second locking portion 71 First side plate fold line 72 Second side plate fold line 83 Side zipper portion

Claims (4)

a cylindrical portion extending in a height direction;
a bottom plate portion provided at one end of the cylindrical portion in the height direction,
The cylindrical portion is
a front plate portion extending from an edge portion on one side of the bottom plate portion in a front-rear direction intersecting the height direction to the other side in the height direction;
a rear plate portion extending from an edge portion on the other side in the front-rear direction of the bottom plate portion to the other side in the height direction;
a pair of side plate portions extending from respective edge portions on both sides of the bottom plate portion in a width direction intersecting the height direction and the front-rear direction to the other side in the height direction, and connecting the front plate portion and the rear plate portion;
The pair of side plate portions have a first side plate fold curve extending in the height direction in a middle portion in the front-rear direction in a portion on the other side in the height direction,
When the pair of side plate portions are bent at the first side plate bending lines, an edge portion of the front plate portion on the other side in the height direction and an edge portion of the rear plate portion on the other side in the height direction come close to each other, and the shape viewed from the width direction gradually becomes shorter in the front-rear direction from one side to the other side in the height direction, resulting in a first state in which the shape becomes pointed on the other side in the height direction,
the tubular portion has a zipper portion provided around the entire periphery at a middle portion in the height direction,
The side zipper portions provided on the pair of side plate portions of the zipper portion are
The first side panel bending curve is intersected with the first side panel bending curve,
A paper container whose shape when viewed from the width direction gradually extends diagonally from one side to the other side in the height direction from the end of one side of the side panel portion in the front-to-back direction toward the position of the first side panel fold curve, and gradually extends diagonally from the other side to one side in the height direction from the position of the first side panel fold curve toward the end of the other side of the side panel portion in the front-to-back direction. The paper container according to claim 1, wherein the pair of side plate portions have a second side plate fold line connecting one end of the side zipper portion in the front-to-rear direction to the other end of the side zipper portion in the front-to-rear direction. the first state;
a second state in which the pair of side plate portions are flat and not bent along the first side plate bending line, and an edge portion on the other side in the height direction of the front plate portion and an end portion on the other side in the height direction of the rear plate portion are spaced apart in the front-rear direction, so that the shape viewed from the width direction is rectangular;
a cover plate portion connected to an edge portion on the other side in the height direction of the rear plate portion,
The cover plate portion is
In the first state, the front plate portion overlaps the front plate portion,
In the second state, the gap between the front plate portion and the rear plate portion is closed and the rear plate portion overlaps the front plate portion,
The front plate portion is
a first locking portion that locks the cover plate portion in the first state;
The paper container according to claim 1 or 2, further comprising a second locking portion that fastens the cover plate portion in the second state. The paper container according to claim 1 or 2;
A packaging container having a pouch filled with food and contained in the paper container.