JP6972731B2 - Packaging container - Google Patents

Description

The present invention relates to a packaging container.

A packaging container formed by bending a sheet material into a box shape and overlapping and sealing the ends is known.

For example, in Patent Document 1, a peelable pull tab is provided on a side seal of a container body using a sheet material based on paper, and the pull tab is peeled off via a peeling layer made of an easily peelable tape-like film. A wrapping container (liquid wrapping paper container) that is provided as possible is disclosed. This packaging container can be disassembled by pulling the pull tab to peel off the side seal portion or by pulling the pull tab provided on the side plate to cut through the side plate.

Japanese Unexamined Patent Publication No. 9-290822

Since the packaging container of Patent Document 1 is easy to disassemble at the time of disposal, it is useful for reducing the volume of waste, but the packaging container once disassembled cannot be reassembled and used.

The present invention has been made in view of such a problem, and can be deformed between a box-shaped state and a flat state, and even after being crushed to a flat state once, the box-shaped state is restored again. It is intended to provide a packaging container that can be reused by returning it.

One aspect of the present invention for solving the above problems is a packaging container formed of a sheet material and deformable between a box-shaped state and a flat state, and has a rectangular shape that overlaps with each other in the flat state. It comprises a first portion and a second portion, an opening is formed in the first portion, and the first portion and the second portion are surrounded by four edge edges where the end faces of the sheet material are exposed. , Of the first part and the second part, the parts along the four edge edges are sealed to each other to form a side seal part having a linear first ruled line inside, and the seal is sealed except for the opening. have, in Tan Taira state, the upper surface including the opening of the first portion with bending the sheet material along the first borders, to form a gap between the first and second portions By forming a lower surface facing the upper surface of the second portion and four side surfaces and stacking the side seal portions along the side surfaces, it can be transformed into a box-shaped state, and in the box-shaped state. , The side seal portion is separated from the four side surfaces, the sheet material is extended along the first ruled line , the gap between the first portion and the second portion is eliminated, and the first portion and the first portion are eliminated. By overlapping the two parts with each other, it can be deformed into a flat state, and in the box-shaped state, the side seal portion is along the side surface so that the end surface of the sheet material along the side seal faces the lower surface side. Ru stacked Te, a packaging container.

According to the present invention, it can be deformed between a box-shaped state and a flat state, and even after being crushed to a flat state once, it can be reused by returning it to the box-shaped state again. Packaging containers can be provided.

A perspective view of the packaging container according to the first embodiment of the present invention in a box shape. Perspective view of the packaging container according to the first embodiment of the present invention in a flat state. Top view of the blank of the packaging container according to the first embodiment of the present invention. The figure which shows the state of deformation of the packaging container which concerns on 1st Embodiment of this invention. Sectional drawing of the ruled line of the packaging container which concerns on 1st Embodiment of this invention The figure which shows the state of the deformation which concerns on the deformation example of a packaging container. Top view of the packaging container according to the modified example of the present invention

The packaging container according to the embodiment of the present invention will be described with reference to the drawings. In the embodiment and each modification, the same or corresponding configurations are designated by the same reference numerals and the description thereof will be omitted. Further, in the following description, for convenience, the vertical direction in which the packaging container is upright as a box-shaped state is referred to as a vertical direction.

<Embodiment>
The packaging container 100 according to an embodiment of the present invention is formed between a box-shaped state and a flat state, which is formed by superimposing and sealing the ends of blanks obtained by cutting a sheet material into a predetermined shape. It is a deformable container.

(Box type)
FIG. 1A shows a perspective view of the packaging container 100 in a box-shaped state. Further, in order to clarify the shape of the packaging container 100, in FIG. 1B, a pair of first side surfaces 121 facing the side seal portions 140, which will be described later, and a pair of facing second side surfaces 122. The perspective view of the packaging container 100 before bending along the side surface 120 composed of is shown.

As shown in FIGS. 1A and 1B, the box-shaped packaging container 100 has a pair of first surfaces facing the upper surface 110 and the lower surface 130 in which the opening 111 is formed. A gap (accommodation space) is formed by the side surface 121 and the pair of second side surfaces 122 facing each other.

As shown in FIG. 1B, the first side surface 121 is composed of two surfaces, an upper first side surface 121a connected to the upper surface 110 and a lower first side surface 121b connected to the lower surface 130. Will be done. The heights of the upper first side surface 121a and the lower first side surface 121b constituting the first side surface 121 are not particularly limited, but can be preferably used at 10 mm or more and 800 mm or less. Further, the height of the second side surface 122 is also not particularly limited, but can be suitably used when it is 20 mm or more and 800 mm or less.

At each of the both side ends of the first side surface 121 and the second side surface 122, a bent piece 150 connected in a triangularly bent state is formed at the boundary between the first side surface 121 and the second side surface 122. It is foldably connected. The surface of the bent piece 150 on the first side surface 121 side is divided into a surface connected to both side ends of the upper first side surface 121a and a surface connected to both side ends of the lower first side surface 121b. There is.

From the vertical center of the bent piece 150 connected to both side ends of the first side surface 121 and the first side surface 121, a side seal portion 140 having a predetermined width formed by sealing the end portions of the sheet material is first. It is foldably connected at the boundary between the side surface 121a and the folding piece 150.

More specifically, the side seal portion 140 includes the lower end of the bent piece 150 connected to both side ends of the upper first side surface 121a and the upper first side surface 121a, and the lower first side surface 121b and the lower first side. It is formed by sealing each other with a first sealing allowance 191 of a predetermined width extending from each of the upper ends of the bent pieces 150 connected to both side ends of the side surface 121b.

A linear first ruled line 171 is formed on the sheet material between the side seal portion 140 and the first side surface 121 and the bent pieces 150 at both ends thereof. Further, a linear second ruled line 172 is formed on the sheet material at the center in the vertical direction of the second side surface 122 and the bent pieces 150 at both ends thereof.

As shown in FIG. 1A, in the box-shaped packaging container 100, the side seal portion 140 is bent along the first ruled line 171 toward the first side surface 121, and then the bent piece 150 is bent. By bending along the second side surface 122, the side seal portion 140 is bent along the first side surface 121 and the second side surface 122.

(Flat state)
FIG. 2 shows a perspective view of the packaging container 100 in a flat state. FIG. 2A is a perspective view showing a state in which the upper surface 110 of the packaging container 100 in a flat state is turned upward. FIG. 2B is a perspective view showing a state in which the lower surface 130 of the packaging container 100 in a flat state is turned upward.

As shown in FIG. 2, the packaging container 100 in a flat state is composed of a rectangular first portion 201 and a second portion 202 that overlap each other.

The first portion 201 includes a top surface 110, a pair of upper upper first side surfaces 121a, a portion of the pair of second side surfaces 122 above the second ruled line 172, and a first ruled line 171 of the bent piece 150. And above the second ruled line 172, and the upper side surface of the first seal allowance 191 constituting the side seal portion 140.

Further, the second portion 202 includes a lower surface 130, a pair of lower first side surfaces 121b, a portion of the pair of second side surfaces 122 below the second ruled line 172, and a second portion of the bent piece 150. It includes a lower side of the ruled line 171 and the second ruled line 172, and a lower side surface of the first seal allowance 191 constituting the side seal portion 140.

In the first portion 201 and the second portion 202, the side seal portions 140 that seal the sheet materials with each other are located at the opposite edges of the four edge edges. Then, the first ruled line 171 is located on the sheet material inside the side seal portion 140. Further, at the remaining two edges of the first portion 201 and the second portion 202, the sheet material is folded back along the second ruled line 172 to form the folded portion 180. The packaging container 100 thus formed has an airtightness except for the opening 111.

(blank)
FIG. 3 shows a plan view (developed view) of the blank 101, which is an example of the blank of the packaging container 100. The blank 101 is formed by cutting one sheet material into a predetermined shape and partitioning a region constituting each surface or the like in a box-shaped state by a ruled line shown by a dotted line.

The sheet material used for the blank 101 is not particularly limited, but for example, a laminated film in which a thermoplastic resin layer or a sealant layer is laminated on a paper base material layer can be preferably used. In addition to this, a barrier layer, a functional film, or the like may be added as appropriate depending on the required functions.

As shown in FIG. 3, in the blank 101, a pair of second side surfaces 122 are connected to two opposite edges of the lower surface 130, and a pair of lower first side surfaces are connected to the remaining two edges of the lower surface 130. 121b are connected. Then, four bent pieces 150 are connected between the adjacent second side surface 122 and the lower first side surface 121b.

The upper surface 110 is connected to the edge of the second side surface 122 facing the lower surface 130. A pair of upper first side surfaces 121a are connected to the end edge orthogonal to the end edge to which the second side surface 122 of the upper surface 110 is connected.

Further, on the edge of the bent piece 150 connected to the other second side surface 122 and the other second side surface 122 facing the lower surface 130 and the lower first side surface 121b, the other second side surface is formed. A second seal allowance 192 for the top seal portion for sealing and connecting the upper surface 110 and the upper first side surface 121a connected to the 122 and the bent piece 150 connected thereto are connected over a predetermined width. ing.

The edges of the bent piece 150, the upper first side surface 121a, the lower first side surface 121b facing the upper surface 110, the lower surface 130, and the second side surface 122, and the second sealing allowance 192 for the top seal portion. A pair of first seal allowances 191 for forming the side seal portion 140 are connected over a predetermined width to the end edge orthogonal to the end edge to which the bent piece 150 is connected. In FIG. 3, the first seal allowance 191 and the second seal allowance 192 are shown with hatching.

Between the first seal allowance 191 and the bent piece 150, the upper first side surface 121a, the lower first side surface 121b, and the second seal allowance 192, the above-mentioned linear first ruled line 171 is formed. It is formed. Further, the second side surface 122, the pair of bent pieces 150 connected to the second side surface 122, and the first seal allowance 191 have the above-mentioned linear shape passing through the center of the second side surface 122 and the bent piece 150. A second ruled line 172 is formed.

On the folded piece 150, a ruled line extending diagonally from the contact point between the edge of the bent piece 150 on the first seal allowance 191 side and the second ruled line 172 to the corners of the upper surface 110 and the lower surface 130 is formed. There is.

(Transformation method)
Next, a method of transforming the packaging container 100 in a flat state into a box-shaped state will be described. FIGS. 4 (a) to 4 (d) show diagrams illustrating each procedure relating to the method of deforming the container body 100.

First, as shown in FIG. 4A, the sheet material of the packaging container 100 in a flat state is bent along the first ruled line 171 or folded back along the second ruled line 172. By extending the portion 180, the first portion 201 and the second portion 202 are separated to form a gap between the first portion 201 and the second portion 202, and the upper surface 110 and the lower surface are formed. The 130, the first side surface 121, and the second side surface 122 are formed. At this time, bending of the sheet material along the first ruled line 171 and extension of the folded portion 180 along the second ruled line 172 may be performed at the same time.

FIG. 5 shows a cross-sectional view of the periphery of the first ruled line 171 and the second ruled line 172 at this time. FIG. 5A shows a cross section around the first ruled line 171 cut along the AA'line. Further, FIG. 5B shows a cross section around the second ruled line 172 cut along the BB'line.

As shown in FIG. 5A, by changing the packaging container 100 from a flat state to a box-shaped state, the sheet material is bent along the first ruled line 171. Further, as shown in FIG. 5B, by changing the packaging container 100 from a flat state to a box-shaped state, the folded portion 180 of the sheet material extends along the second ruled line 172.

In FIG. 5, the first ruled line 171 and the second ruled line 172 have a shape recessed from the front surface to the back surface of the sheet material, but the shape of the first ruled line 171 and the second ruled line 172 is this. For example, it may be a straight line convex toward the back surface.

Next, as shown by the black arrow in FIG. 4B, the side seal portion 140 is bent upward or downward along the first ruled line 171.

Next, the bent piece 150 is folded toward the second side surface 122 as shown by the black arrow in FIG. 4 (c). As a result, the side seal portion 140 can be overlapped along the first side surface 121 and the second side surface 122.

At this time, the bent piece 150 may be attached to the surface of the second side surface 122. As a method of attaching the bent piece 150 to the second side surface 122, for example, there is a method of using a heat seal, a hot melt adhesive, or the like. Further, by attaching with a removable joining member such as a hook-and-loop fastener or a snap button, the packaging container 100 transformed from the box-shaped state to the flat state can be used again as the box-shaped state, and is flat. The stated packaging container 100 can be reused.

By the above procedure, as shown in FIG. 4D, the flat packaging container 100 can be transformed into a box-shaped state.

The box-shaped packaging container 100 can be flattened by the reverse procedure of the above.

Specifically, first, the bent piece 150 of the box-shaped packaging container 100 is separated from the second side surface 122.

Next, the sheet material is stretched along the first ruled line 171 or folded back along the second ruled line 172 (that is, from the state shown in the right figure of FIG. 5 to the state shown in the left figure). do). At this time, the stretching of the sheet material along the first ruled line 171 and the folding back of the sheet material along the second ruled line 172 may be performed at the same time.

Next, the gap between the first portion 201 and the second portion 202 is eliminated, and the first portion 201 and the second portion 202 are overlapped with each other to deform the packaging container 100 into a flat state. can do.

(Transformation example of transformation method)
The method of transforming the packaging container 100 into a box shape is not limited to the above method. FIG. 6 shows a deformation method according to a modification. The difference between the deformation method of FIG. 6 and the deformation method of FIG. 4 is the bending direction of the side seal portion 140 and the folding direction of the bent piece 150.

As shown in FIG. 6B, in the deformation method according to the modification, the side seal portion 140 is bent upward along the first ruled line 171 as shown by the black arrow. Then, as shown in FIG. 6 (c), the bent piece 150 is folded toward the first side surface 121.

As a result, as shown in FIG. 6D, the flat packaging container 100 is placed along the first side surface 121 and the second side surface 122 above the side surface 120 by the side seal portion 140. It can be transformed into a stacked state. The packaging container 100 deformed in this way can also be made flat by the procedure opposite to the above.

(Modification example of packaging container)
In the packaging container 100, the side seal portions 140 are provided at the two opposite end edges of the rectangular first portion 201 and the second portion 202, but the number of the side seal portions 140 is not limited to two.

FIG. 7 shows a plan view of the packaging container 300 and the packaging container 400 according to the modified example in a flat state. The difference between the packaging container 100 and the packaging container 300 and the packaging container 400 is the formation position of the side seal portion 140, the first ruled line 171 and the second ruled line 172.

As shown in FIG. 7A, the packaging container 300 has a side seal portion 141 shown with hatching formed over three end edges. A linear first ruled line 171 is formed inside the side seal portion 141, and a second ruled line 172 is formed on the remaining one edge. Like the blank 101, the packaging container 300 is provided with a pair of first sealing allowances and a pair of second sealing allowances on the opposite edges of one substantially rectangular blank, and the blank is centered. It can be formed by sealing each sealing allowance after bending with.

Further, as shown in FIG. 7 (b), in the packaging container 400, the side seal portion 142 is formed over all four edge edges. A linear first ruled line 171 is formed inside the side seal portion 142. The second ruled line 172 is not formed on the packaging container 400. The packaging container 400 can be formed, for example, by forming the first portion and the second portion with square-shaped blanks and sealing all the edges.

The present invention can be suitably used for a packaging container filled with a liquid.

100, 300, 400 Packaging container 101 Blank 110 Top surface 111 Opening 120 Side surface 121 First side surface 122 Second side surface 130 Bottom surface 140 Side seal part 150 Folded piece 171 First ruled line 172 Second ruled line 180 Folded part 191 First Seal allowance 192 Second seal allowance 201 First part 202 Second part

Claims (2)

A packaging container made of sheet material that can be deformed between a box-shaped state and a flat state.
It has a rectangular first portion and a second portion that overlap each other in the flat state.
An opening is formed in the first portion.
The first portion and the second portion are surrounded by four edge edges where the end faces of the sheet material are exposed.
Of said first portion and said second portion, said four of a portion along the edge are sealed to one another, side seal portion having a first ruled line linear inward is formed, except for the opening Has airtightness ,
In the previous Symbol flat state,
Folding the sheet material along the first borders, before Symbol upper surface and the second containing the opening of the first portion to form a gap between the first portion and the second portion A lower surface facing the upper surface of the portion and four side surfaces are formed.
By stacking the side seal portions along the side surface, the side seal portion can be transformed into the box-shaped state.
In the box-shaped state,
The side seal portion is separated from the four side surfaces, and the side seal portion is separated from the four side surfaces.
Is extended to the sheet material along the first borders, and eliminate the gap between the front Symbol first portion and the second portion,
By overlapping the first part and the second part with each other, it can be transformed into the flat state .
In the state of the box-type, so that the end faces of the sheet material along the side seal faces the lower surface side, the side seal portion Ru superimposed along said sides, the packaging container. The packaging according to claim 1, wherein at least a part of the side surface portion in the box-shaped state of the first portion or the second portion and a portion overlapping the same have joint members detachable from each other. container.

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