JP7102837B2 - Packaging container - Google Patents

Description

The present invention relates to a packaging container.

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. Possiblely provided containers (liquid wrapping paper containers) are disclosed. This 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.

Further, a tubular sleeve member is known that covers the side surface of a box-shaped container body to protect the container body and improve the design.

Japanese Unexamined Patent Publication No. 9-290822

It has been studied to cover the box-shaped container body as disclosed in Patent Document 1 with the above-mentioned sleeve member, but in the case of a packaging container as described in Patent Document 1, the container body comes off from the sleeve. There was a risk of falling out.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a packaging container capable of preventing the sleeve from moving to the lower surface side and the container body from falling off from the sleeve.

One aspect of the present invention for solving the above problems is a container body formed of a first sheet material and a second sheet material and deformable between a box-shaped state and a flat state, and the above -mentioned container body. The container body comprises an upper surface, a lower surface, and a plurality of side surfaces in the box-shaped state, including a tubular sleeve capable of covering at least a part of the side surface of the container body in the box-shaped state. An opening is formed in, and from the side surface, a connecting portion in which the first sheet material and the second sheet material are connected in a state of being sealed and overlapped at the peripheral edge portion extending over the entire circumference of the outer edge is extended and connected. The portion can be along the side surface so that the edge faces the top surface side, and the sleeve, in a state of covering the side surface, engages with the connection portion along the side surface so as to face the top surface side of the sleeve. A packaging container with a regulatory section that regulates movement to the bottom surface.

According to the present invention, it is possible to provide a packaging container capable of preventing the sleeve from moving to the lower surface side and the container body from falling off from the sleeve.

An exploded perspective view of the packaging container according to the first embodiment of the present invention. Partial sectional view of the packaging container according to the first embodiment of the present invention. Perspective view of the container body according to the first embodiment of the present invention in a flat state. Top view of the blank of the container body according to the first embodiment of the present invention. The figure which shows the deformation method of the container body which concerns on 1st Embodiment of this invention. Top view of the blank of the sleeve according to the first embodiment of the present invention. Partial sectional view of the packaging container according to the second embodiment of the present invention. Top view of the blank of the container body according to the second embodiment of the present invention. Top view of the blank of the sleeve according to the second embodiment of the present invention. Partial sectional view of the packaging container according to the third embodiment of the present invention.

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

<First Embodiment>
(Packaging container)
The packaging container 300 according to the first embodiment of the present invention is composed of a container body 100 and a tubular sleeve 200 capable of covering the side surface of the container body 100. FIG. 1 shows an exploded perspective view of the packaging container 300, and FIG. 2 shows a partial cross-sectional view of the packaging container 300 as viewed from the side surface side. The container body 100 shown in FIG. 1 is in a box-shaped state, which will be described later.

As shown in FIGS. 1 and 2, by inserting the container body 100 into the inner circumference of the sleeve 200, the side surface of the container body 100 is covered with the sleeve 200. Although details will be described later, the sleeve 200 is restricted from moving downward (on the lower surface 130 side of the container body 100) while covering the side surface of the container body 100.

(Container body)
Next, the container body 100 will be described with reference to FIGS. 1 to 4. The container body 100 is a box-shaped container formed by overlapping and sealing the ends of blanks obtained by cutting a sheet material into a predetermined shape. The container body 100 is, for example, a container that can be deformed between a box-shaped state and a flat state.

FIG. 3 shows a perspective view of the container body 100 in a flat state with the upper surface facing upward. Further, FIG. 4 shows a plan view of the blanks 100a and 100b, which are examples of the blanks of the container body 100.

(Box type)
As shown in FIG. 1, in the box-shaped container body 100, a gap (accommodation space) is formed by an upper surface 110 having an opening 111, a lower surface 130, and a plurality of side surfaces 120. From the side surface 120, a side seal portion 140 and a folded-back piece 150, which are connecting portions connected in a state where the sheet materials are overlapped, extend and are provided so as to be able to be folded back along the side surface 120. The side seal portion 140 can be aligned with the side surface 120 with the end edge facing the upper surface 110 side. As an example, the container body 100 includes a regular hexagonal upper surface 110 and lower surface 130, and six side surfaces 120 extending from each side of the upper surface 110 and the lower surface 130. Although not shown, a spout to which a cap or the like can be attached may be attached to the opening 111.

(Flat state)
As shown in FIG. 3, the container body 100 in a flat state is composed of a first portion 170a and a second portion 170b that overlap each other. As shown in FIG. 4, the blank for forming the container body 100 is composed of a blank 100a corresponding to the first portion 170a and a blank 100b corresponding to the second portion 170b.

The first portion 170a is a plurality of upper isosceles trapezoidal surfaces 120a formed between the upper surface 110, a plurality of upper isosceles trapezoidal surfaces 120a extending from each side of the upper surface 110, and a plurality of adjacent upper isosceles trapezoidal surfaces 120a. Includes 150a and an upper seal allowance 140a forming a peripheral edge of the upper isosceles trapezoidal surface 120a and the upper folded surface 150a on the opposite side of the upper surface 110 to the entire outer edge of the first portion 170a. ..

The second portion 170b is formed between the lower surface 130, a plurality of lower isosceles trapezoidal surfaces 120b extending from each side of the lower surface 130, and a plurality of lower isosceles trapezoidal surfaces 120b adjacent to each other. Along the edge of the side folded surface 150b and the lower isosceles trapezoidal surface 120b and the lower folded surface 150b on the opposite side of the lower surface 130, the lower side constituting the peripheral edge portion of the outer edge of the second portion 170b. Includes a seal allowance of 140b.

The upper surface 110 and the lower surface 130 are convex polygonal surfaces. In the packaging container 100, as an example, the upper surface 110 and the lower surface 130 are formed in a congruent regular hexagonal shape. As an example, the upper surface 110 and the lower surface 130 may have similar shapes having different areas. The shapes of the upper surface 110 and the lower surface 130 are not limited as long as they are convex polygonal shapes. As the shapes of the upper surface 110 and the lower surface 130, in addition to the regular hexagon shown in the embodiment, a rectangular shape is also useful from the viewpoint of loading efficiency in a box-shaped state, convenience of handling members such as blanks, and the like. An opening 111 is formed on the upper surface 110.

The plurality of upper isosceles trapezoidal surfaces 120a and the plurality of lower isosceles trapezoidal surfaces 120b are surfaces forming the side surface 120 of the container body 100 in a box-shaped state. In the container body 100, as an example, the upper isosceles trapezoidal surface 120a and the lower isosceles trapezoidal surface 120b are rectangular, but as in the embodiment described later, the upper isosceles trapezoidal surface 120a and the lower isosceles trapezoidal surface 120b are , It may be an isosceles trapezoid shape that is not rectangular.

The upper folded surface 150a and the lower folded surface 150b are surfaces forming the folded piece 150 of the container body 100 in a box-shaped state, and are surfaces that are folded in the process of deformation described later.

The upper folded surface 150a and the lower folded surface 150b have a first portion 170a and a first portion 170a and a first portion 170a from each apex of the upper surface 110 and the lower surface 130, as shown by a dotted line in FIG. 4, in order to facilitate folding in the process of deformation. A folded ruled line 151 extending toward the peripheral edge of the portion 170b of 2 may be provided.

The upper seal allowance 140a and the lower seal allowance 140b are strip-shaped surfaces provided for connecting the first portion 170a and the second portion 170b at the peripheral edge portion. When connecting the first portion 170a and the second portion 170b, the first portion 170a and the second portion 170b are overlapped with each other, and the upper seal allowance 140a and the lower seal allowance 140b face each other. The side seal portions 140, which are the connecting portions, are formed by sealing and adhering the surfaces to be bonded to each other. The shapes of the upper seal allowance 140a and the lower seal allowance 140b can be arbitrarily set as long as there is a seal allowance that overlaps with each other in order to form the side seal portion 140 by overlapping.

The width of the side seal portion 140, that is, the width of the upper seal allowance 140a and the lower seal allowance 140b may be constant as long as the first portion 170a and the second portion 170b can be connected, or is constant. It does not have to be, and the edge does not have to be straight.

The region for sealing the upper seal allowance 140a and the lower seal allowance 140b can be a strip-shaped region having a predetermined width, for example, as shown with hatching in FIG. The container body 100 formed in this way has an airtightness except for the opening 111.

The blanks 100a and 100b can be formed by dividing the regions constituting each surface by, for example, cutting the sheet material into a predetermined shape and providing ruled lines as shown by thin lines and dotted lines in FIG.

The sheet material used for the blanks 100a and 100b 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 according to the required functions.

(Transformation method)
Next, an example of a method of transforming a flat packaging container into a box-shaped state will be described using the container body 100. 5 (a) to 5 (d) show a diagram illustrating an example of a method of deforming the container body 100.

First, as shown in FIG. 5A, the first portion 170a and the second portion 170b of the container body 100 in a flat state are placed on the peripheral portion (specifically, the side seal portion 140 and the upper side, etc.). Bend (along the ruled line between the trapezoidal surface 120a and the lower isosceles trapezoidal surface 120b) to separate the first portion 170a and the second portion 170b. As a result, a gap is formed between the first portion 170a and the second portion 170b, and the upper surface 110, the lower surface 130, and the side surface 120 are formed. At the same time, the upper folded surface 150a and the lower folded surface 150b each approach the adjacent upper isosceles trapezoidal surface 120a and the sides shared by the lower isosceles trapezoidal surface 120b. As a result, the upper folded surface 150a and the lower folded surface 150b are folded so that the folded ruled line 151 faces the outside of the gap, and becomes a folded piece 150.

Next, as shown in FIG. 5B, the side seal portion 140 is placed along the side surface 120 with the end edge facing the upper surface 110.

Next, as shown in FIG. 5 (c), the folded piece 150 is placed along the outer peripheral surface of the side surface 120. The direction in which the folded piece 150 is aligned is not limited, and as shown in FIG. 5 (c), a plurality of folded pieces 150 may be aligned in the same direction along the circumferential direction of the side surface 120. Each folded piece 150 may be aligned in a different direction.

At this time, the folded piece 150 may be attached to the surface of the side surface 120. As a method of attaching the folded piece 150 to the side surface 120, 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 container body 100 transformed from the box-shaped state to the flat state can be used again as the box-shaped state, so that it is flat. The container body 100 in such a state can be reused.

By the above procedure, as shown in FIG. 5D, the container body 100, which was in a flat state, can be transformed into a box-shaped state.

The box-shaped container body 100 can be flattened by the procedure opposite to the above.

Specifically, first, the folded piece 150 of the box-shaped container body 100 is separated from the side surface 120.

Next, at the peripheral edge portion (specifically, along the ruled line between the side seal portion 140 and the side surface 120), the first portion 170a and the second portion 170b are extended.

Next, the gap between the first portion 170a and the second portion 170b is eliminated, and the first portion 170a and the second portion 170b are overlapped with each other to deform the container body 100 into a flat state. can do.

(sleeve)
Next, the sleeve 200 will be described with reference to FIGS. 1, 2, and 6. The sleeve 200 includes a peripheral wall 210 and an engaging piece 220. FIG. 6 shows a plan view of the blank 200a, which is an example of the blank of the sleeve 200.

The peripheral wall 210 is formed by connecting a plurality of surfaces having a shape corresponding to the side surface 120 in the circumferential direction so as to cover the side surface 120 of the container body 100. In the sleeve 200, six rectangular surfaces corresponding to the shape of the side surface 120 are connected in the circumferential direction to form a peripheral wall 210.

The engaging piece 220 is a plate-shaped member that restricts the downward movement of the sleeve 200 when the side surface of the container body 100 is covered. As shown in FIGS. 1 and 2, in a state where the sleeve 200 covers the side surface of the container body 100, the engaging piece 220 is bent toward the inner peripheral side of the sleeve 200 so as to face downward from the upper end of the peripheral wall 210. ing.

As an example, the blank 200a of the sleeve 200 can be formed by cutting a sheet material into a predetermined shape and providing a ruled line as shown by a thin line in FIG. 6 to partition a plurality of regions.

As shown in FIG. 6, the blank 200a includes a peripheral wall 210, an engaging piece 220, and a sealing allowance 230.

As shown in FIG. 6, the engaging piece 220 is provided on each of the plurality of surfaces constituting the peripheral wall 210 so as to extend from a side in which the plurality of surfaces are connected and an adjacent side. In the sleeve 200, six engaging pieces 220 are provided as an example, and each engaging piece 220 extends from the upper end of each rectangular surface constituting the peripheral wall 210. The number of engaging pieces 220 is not limited as long as it is one or more, but it is preferably two or more in order to reliably regulate the movement of the sleeve 200.

As an example, in the sleeve 200, a sealing allowance 230 formed at one end of the peripheral wall 210 is connected to the other end side of the peripheral wall 210 by sealing, adhesion, etc. to form the peripheral wall 210 in a tubular shape, and the engaging piece 220 has an end edge. It is formed by folding back downward on the inner peripheral side of the peripheral wall 210.

The sheet material used for the sleeve 200 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 or 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 according to the required functions. Further, plastic, metal or the like may be used.

(Regarding movement restrictions)
By covering the side surface 120 of the container body 100 with the sleeve 200, as shown in FIG. 2, the side seal portion 140 along the side surface 120 so as to face the upper surface 110 side and the engaging piece 220 facing downward are engaged. It fits. This restricts the downward movement of the sleeve 200 from the container body 100. As a result, when the outer peripheral surface of the packaging container 300 (that is, the outer peripheral surface of the sleeve 200) is grasped and the upper surface 130 of the container body 100 is directed downward and the packaging container 300 is tilted or turned upside down, the container is used. It is possible to prevent the main body 100 from coming off from above the sleeve 200 and falling off. As shown in FIG. 2, the side seal portion 140 and the engaging piece 220 may be engaged with each other so that the end edges are in contact with each other, or other surfaces such as the surface of the side sealing portion 140 and the engaging piece 220. It may be engaged in contact with the portion, and the place of engagement is not limited as long as the movement of the sleeve 200 can be restricted.

When covering the container body 100 with the sleeve 200, for example, the container body 100 is inserted from the upper end side of the sleeve 200. As a result, the engaging piece 220 of the sleeve 200 is folded downward and patted toward the peripheral wall 210. Then, by inserting the container body 100 until the end edge of the engagement piece 220 gets over the end edge of the side seal portion 140, as shown in FIG. 2, the end edge of the side seal portion 140 and the engagement piece of the sleeve 200 are inserted. It can be engaged with the edge of 220.

<Second embodiment>
FIG. 7 shows a partial cross-sectional view of the packaging container 301 according to the second embodiment as viewed from the side surface side, and FIG. 8 is a plan view of blanks 101a and 101b which are examples of blanks of the container body 101 used for the packaging container 301. 9 shows a plan view of the blank 201a, which is an example of the blank of the sleeve 201 used for the packaging container 301. The difference between the packaging container 300 and the packaging container 301 is the shape of the container body and the sleeve. Specifically, the container body 101 is formed in an inverted tapered shape in which the side surface 121 narrows from the upper surface 110 to the lower surface 130. Further, the sleeve 201 used for the packaging container 301 includes a peripheral wall 211 and an engaging piece 220. As shown in FIG. 7, the peripheral wall 211 is formed in an inverted tapered shape that narrows from the upper side to the lower side in accordance with the shape of the side surface 121 of the container main body 101. By forming the container body 101 and the sleeve 201 in an inverted tapered shape in this way, it is possible to provide a highly designed packaging container 301.

As shown in FIG. 8, the upper isosceles trapezoidal surface 121a and the lower isosceles trapezoidal surface 121b of the container body 101 are not rectangular but areosceles trapezoidal. Further, in the blanks 101a and 101b, the upper surface 110 and the lower surface 130 have a regular hexagonal shape, and the upper surface 110 is formed in an area larger than that of the lower surface 130. The side of the upper isosceles trapezoidal surface 121a of the container body 101 on the upper seal allowance 140a side and the side of the lower isosceles trapezoidal surface 121b on the lower seal allowance 140b side are formed to have the same length. The upper isosceles trapezoidal surface 121a has an isosceles trapezoidal shape in which the length of the side on the upper surface 110 side is longer than the length of the side on the upper seal allowance 140a. Further, the lower isosceles trapezoidal surface 121b has an isosceles trapezoidal shape in which the length of the side on the lower seal allowance 140b side is longer than the length of the side on the lower surface 130 side.

As shown in FIG. 9, the peripheral wall 211 is formed by connecting a plurality of surfaces having a shape corresponding to the side surface 121 in the circumferential direction so as to cover the side surface 121 of the container body 101. In the sleeve 201, six inverted tapered trapezoidal surfaces corresponding to the shape of the side surface 120 are connected in the circumferential direction to form the peripheral wall 211.

As shown in FIG. 7, in the packaging container 301 as well, the side seal portion 140 engages with the engaging piece 220 in a state where the sleeve 201 covers the side surface of the container body 101 as in the packaging container 300. As a result, the downward movement of the container body 101 of the sleeve 201 is restricted, and the container body 101 is prevented from falling off from above the sleeve 201. As shown in FIG. 7, the side seal portion 140 and the engaging piece 220 may be engaged so that the edge edges are in contact with each other, or other surfaces such as the surface of the side sealing portion 140 and the engaging piece 220. It may be engaged in contact with the portion, and the place of engagement is not limited as long as the movement of the sleeve 200 can be restricted.

<Third embodiment>
FIG. 10 shows a partial cross-sectional view of the packaging container 302 according to the third embodiment as viewed from the side surface side. The difference between the packaging container 301 and the packaging container 302 is the shape of the sleeve. Specifically, the sleeve 202 used for the packaging container 302 includes a peripheral wall 211, a convex portion 250 which is a regulating portion for restricting the downward movement of the container body 100 of the sleeve 202, and a bottom portion 260. To. As the material of the sleeve 202, plastic, metal, or the like can be preferably used because of the ease of forming the convex portion 250.

As shown in FIG. 10, the convex portion 250 is formed so as to protrude from the inner peripheral surface of the peripheral wall 211 of the sleeve 202 and engage with the side seal portion 140 in a state where the sleeve 202 covers the side surface of the container body 101. There is.

The bottom portion 260 is a plate extending inward from the lower end of the peripheral wall 211 in order to cover at least a part of the lower surface 130 of the container body 101 when the sleeve 202 covers the side surface of the container body 101. It is a shaped member.

As shown in FIG. 10, in the packaging container 302, the side seal portion 140 engages with the convex portion 250 in a state where the sleeve 202 covers the side surface of the container body 101. As a result, the downward movement of the container body 101 of the sleeve 202 is restricted, and the container body 100 is prevented from falling off from above the sleeve 202. Further, by covering at least a part of the lower surface 130 of the container body 101 with the bottom portion 260, it is possible to prevent the container body 101 from falling off from below the sleeve 202. In the packaging container 302, the sleeve 202 does not have to include the bottom 260. As shown in FIG. 10, the side seal portion 140 and the convex portion 250 may be engaged so that the end edges are in contact with each other, or may be engaged with other portions such as the surfaces of the side seal portion 140 and the convex portion 250. It may be abutted and engaged, and the place of engagement is not limited as long as the movement of the sleeve 200 can be restricted.

<Modification example>
In the first embodiment and the second embodiment, an example in which a container body is formed by using two sets of blanks 100a and 100b and blanks 101a and 101b corresponding to the first portion 170a and the second portion 170b. As shown, these blanks may be integrally formed. Specifically, for example, a blank may be formed by connecting a part of the peripheral edge portion of the blank corresponding to the first portion 170a and the second portion 170b to form a connecting portion.

When the container body is formed by using the integrally formed blank, for example, the blank is folded back at the connecting portion to overlap the first portion 170a and the second portion 170b, and then the upper seal allowance 140a. And the lower seal allowance 140b is sealed. By integrally forming the blanks in this way, for example, when the sheet material is punched to form a blank, many blanks can be punched from one sheet material, so that the container body and the container body and the blank can be used at low cost. It is possible to manufacture the packaging container that was used.

The embodiment of the present invention is not limited to the above embodiment and each modification as long as it is a packaging container that can prevent the container body from falling off from the sleeve, and each feature may be appropriately combined and carried out. For example, the sleeve 200 according to the first embodiment may be provided with a bottom portion 260.

The present invention can be suitably used for a packaging container including a container body and a tubular sleeve capable of covering the side surface of the container body.

100, 101 Container body 100a, 100b, 101a, 101b Blank 110 Top surface 111 Opening 120 Side surface 120a, 121a Upper isosceles trapezoidal surface 120b, 121b Lower isosceles trapezoidal surface 130 Lower surface 140 Side seal part 140a Upper seal allowance 140b Lower seal Allowance 150 Folded piece 150a Upper folded surface 150b Lower folded surface 151 Folded ruled line 170a First part 170b Second part 200, 201, 202 Sleeve 210, 211 Peripheral wall 220 Engagement piece 230 Sealing allowance 250 Convex 260 Bottom 300, 301, 302 packaging container

Claims (4)

A container body formed of a first sheet material and a second sheet material and deformable between a box-shaped state and a flat state ,
Including a tubular sleeve capable of covering at least a part of the side surface of the container body in the box-shaped state .
The container body
In the box-shaped state,
With top, bottom, and multiple sides,
An opening is formed on the upper surface.
From the side surface, a connecting portion in which the first sheet material and the second sheet material are connected in a sealed and overlapped state at the peripheral edge portion extending over the entire circumference of the outer edge extends.
The connection can be along the side surface so that the edge faces the top surface side.
The sleeve
With the side surface covered, the sleeve is provided with a regulating portion that restricts the movement of the sleeve to the lower surface side by engaging with the connecting portion along the side surface so as to face the upper surface side.
Packaging container. The packaging container according to claim 1, wherein the regulating portion is a plate-shaped member extending downward from the upper end on the inner peripheral side of the sleeve. The packaging container according to claim 1, wherein the regulating portion is a convex portion protruding from the inner peripheral surface of the sleeve. The packaging container according to any one of claims 1 to 3, further comprising a bottom that can cover at least a part of the lower surface of the container body when the sleeve covers the side surface.

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