JP2023094333A - packaging container - Google Patents

Abstract

To provide a packaging container with excellent durability against impact caused by dropping, etc.SOLUTION: A container body 2 of the invention is formed by bending and joining one continuous sheet material 5A. The sheet material 5A has a laminated structure in which multiple layers are laminated, and a filling part 120 in which a filler is enclosed is formed between the layers in the sheet material. The container body 2 is equipped with: a bottom surface part 22; a front wall 23 and a back wall 24 facing each other; and a pair of side walls 25 located between them and facing each other, and has an ear-shaped part 27 extending outward from between the bottom surface part 22 and the pair of side walls 25. The ear-shaped part 27 is continuous with each of the pair of side walls 25 through a lateral fold part 63a and bent along the lateral fold part 63a so as to be in contact with the side wall 25 or the bottom part 22, and the folded state of the ear-shaped part 27 is held by a covering sheet 4 covering all or part of the ear-shaped part 27.SELECTED DRAWING: Figure 1

Description

The present invention relates to packaging containers.

2. Description of the Related Art As packaging containers for containing contents such as beverages and liquid detergents, packaging containers having a container body formed by folding and joining sheet materials are known.
In Patent Document 1, the outer surface of an inverted truncated cone-shaped tubular member is in close contact with the inner surface of a flexible packaging bag, and the bottom of the flexible packaging bag is formed substantially horizontally with the bottom surface of the tubular member, A self-supporting composite container is described in which the open end at the top of the flexible bag is horizontally palm-sealed.

In Patent Document 2, after forming a palm-to-face heat-bonded portion and a bottom edge heat-bonded portion perpendicular to each other in a laminated sheet, a rectangular cylindrical body portion is formed near the bottom edge heat-bonded portion, and bottom side end heat-bonded portions are formed in a linear shape on two opposite sides of the bottom side end heat-bonded portions, and portions outside the bottom side end heat-bonded portions are cut. , a self-standing bag is described.

In Patent Document 3, a self-supporting bag is formed by joining the edges of a laminated film into a bag shape, and has a rectangular bottom surface at the bottom and plate-shaped pieces projecting laterally on both sides of the bottom surface. bag is described.

In Patent Document 4, a bottom portion formed by folding a sealant layer in one laminate inward and a bag body formed by sealing the periphery of the laminate are provided, and both ends above the bottom portion are provided. A self-supporting bag is disclosed in which a ruled line provided on the inside of the bag folds inward under the self-weight of the content liquid so that the bottom becomes flat.

Patent Literatures 5 and 6 disclose a box-shaped container comprising an inner bag having ear portions and an outer box containing the inner bag. Such an inner bag is assembled in the shape of a box, and is housed in an outer case with the ear portions bent toward the top or side of the box.

JP-A-11-236054 JP 2001-328644 A JP-A-2003-26189 JP 2012-116498 A JP-A-07-223633 Japanese Patent Application Laid-Open No. 2004-099110

Self-supporting packaging containers such as those disclosed in Patent Documents 1 to 6 have a flat bottom surface formed by linearly joining sheet materials together. When an external force is applied to a self-supporting packaging container formed by joining sheet materials together, the stress concentrates on the joints between the sheet materials, and there is a tendency for the bag to break starting from this portion. In particular, when a self-supporting packaging container is dropped, the impact of the drop and the load of the contents such as liquid are likely to be applied to the joining points between the sheet materials at the bottom of the packaging container. The packaging containers of Patent Literatures 1 to 4 have insufficient durability against impact caused by dropping or the like in the lower portion thereof. Patent Documents 5 and 6 have an outer box disposed outside the inner bag, but the inner bag is difficult to maintain in a regular three-dimensional shape such as a cube or rectangular parallelepiped due to the weight of the contents. As a result, it is difficult to accommodate the inner bag in the outer box of the packaging containers of Patent Documents 5 and 6, making it difficult to assemble the packaging containers.

SUMMARY OF THE INVENTION An object of the present invention is to provide a packaging container that has excellent durability against impact caused by dropping or the like and that can be easily assembled.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging container having a container body having a space for containing contents therein.
It is preferable that the container main body is formed by folding and joining one continuous sheet material.
It is preferable that the sheet material has a laminated structure in which a plurality of layers are laminated, and that a filling portion in which a filler is filled is formed between the layers of the sheet material.
The container body includes a bottom surface portion, a front wall and a rear wall that are continuous with the bottom surface portion in the front-rear direction via a bent portion and face each other in the front-rear direction, and are positioned between the front wall and the rear wall, It is preferable to have a pair of side walls facing each other in a cross direction crossing the front-rear direction.
It is preferable that the container body has an ear-shaped portion extending outward from between the bottom portion and the pair of side walls in the cross direction.
It is preferable that the ear-shaped portions are continuous with the pair of side walls through the side bent portions and are bent along the side bent portions so as to contact the side walls or the bottom surface. .
It is preferable that the ear-like portion is held in a folded state by a cover sheet that covers all or part of the ear-like portion.

According to the packaging container of the present invention, it has excellent durability against impact caused by dropping or the like, and can be easily assembled.

FIG. 1 is a perspective view showing one embodiment of a packaging container according to the present invention. FIG. 2 is a developed view of a sheet member forming the container body shown in FIG. FIG. 3 is a perspective view showing another embodiment of the packaging container according to the present invention. FIG. 4 is a perspective view showing still another embodiment of the packaging container according to the present invention. FIG. 5 is a developed view of a sheet member forming the container body shown in FIG.

Hereinafter, the packaging container of the present invention will be described based on its preferred embodiments. FIG. 1 shows an embodiment (hereinafter also referred to as "first embodiment") of the packaging container of the present invention.
As shown in FIG. 1, the packaging container 1A of the present embodiment includes a container body 2 for containing contents therein, a spout 3 fixed to a top surface portion 26 of the container body 2, and an outer peripheral surface of the container body 2. and a covering sheet 4 arranged on at least a part of.
As shown in FIG. 1, the packaging container 1A can stand on its own by grounding the bottom surface portion 22 of the container body 2 on a horizontal surface. In such a self-standing state, the height direction Z of the packaging container 1A coincides with the vertical direction. That is, the bottom surface portion 22 of the container body 2 faces downward, and the opposite side of the bottom surface portion 22 in the height direction Z of the packaging container 1A (for example, the side of the spout 3) faces upward. Hereinafter, unless otherwise specified, the description of the packaging containers 1A to 1C of each embodiment will be the description of the packaging containers in the self-supporting state.

The container body 2 includes a bottom portion 22 , a front wall 23 , a back wall 24 , a pair of side walls 25 , 25 , and a top portion 26 facing the bottom portion 22 in the height direction Z. A front wall 23 , a rear wall 24 and a pair of side walls 25 , 25 are erected from the periphery of the bottom portion 22 .
The packaging container 1A has a front-back direction X, which is the depth direction when the container 1A is viewed from the front wall 23 of the container body 2, and an orthogonal direction Y as a crossing direction crossing the front-back direction X. Such an orthogonal direction Y is a direction orthogonal to the front-rear direction X, and is a horizontal direction with respect to the front wall 23 and the rear wall 24 . That is, in the packaging container 1A, the container body 2 has a front wall 23 and a back wall 24 that face each other in the front-rear direction X, and is located between the front wall 23 and the back wall 24 and faces each other in the orthogonal direction Y of the container body 2. A pair of side walls 25, 25 facing each other. The front wall 23 and the rear wall 24 are continuous with the bottom portion 22 in the front-rear direction X via the bottom bent portion 63 .

The container body 2 has an accommodation space for accommodating contents. The accommodation space is a space surrounded by a front wall 23 , a rear wall 24 , a bottom portion 22 , a pair of side walls 25 and 25 , and a top portion 26 . The contents of the packaging container 1A are accommodated in such an accommodation space. The contents contained in the container body 2 may be liquid or powder. When the contents are liquid, for example, liquid hair care agents such as shampoo and hair rinse, liquid soaps such as body soap and hand soap, liquid detergents for clothes or dishes, softeners, seasonings, cosmetics such as lotions, Examples include, but are not limited to, beverages, liquid foods, drugs such as disinfectant alcohol, and the like.

The container body 2 of this embodiment has a filling portion 120 (non-adhesive region 110), which will be described later. The filling part 120 can be filled with a filling material such as air. Accordingly, the filling part 120 functions as a cushion that prevents the container body 10 from being damaged. In the container body 2 of the present embodiment, filling portions 120 are formed along the peripheral edges of the front wall 23, the rear wall 24, and the bottom portion 22 (see FIG. 1). Further, the filling portion 120 is formed along the periphery of the through hole 33 of the top surface portion 26 .

A side seal portion 81 is formed in the center of the side wall 25 in the front-rear direction X of the container body 2 of the present embodiment. The side wall 25 of this embodiment is divided into a front portion 251 on the side of the front wall 23 and a rear portion 252 on the side of the rear wall 24 with the side seal portion 81 as a boundary. The side seal portion 81 forms a peripheral wall consisting of the front wall 23, the rear wall 24, and the side walls 25 (the front portion 251 and the rear portion 252) positioned therebetween, that is, the cylindrical portion of the container body 2. At the same time, a housing space defined by the peripheral wall, the bottom surface portion 22, and the top surface portion 26 is formed.
The side seal portion 81 of this embodiment is positioned at the center of the side wall 25 in the front-rear direction X and extends in the height direction Z of the packaging container 1A. The side seal portion 81 is also formed continuously from the side wall 25 to the ear-shaped portion 27 described later.
The position of the side seal portion 81 on the side wall 25 is not limited to the center of the side wall 25 in the front-rear direction X, and can be formed at any location on the side wall 25 . For example, the position of the side seal portion 81 may be biased toward the front side (front wall 23 side) or rear side (back wall 24 side) of the center of the side wall 25 in the front-back direction X.

The container body 2 has ears 27 extending outward in the orthogonal direction Y from between the bottom surface portion 22 and the pair of side walls 25 , 25 in the orthogonal direction Y. As shown in FIG. Ears 27 are triangular portions extending from the lower edge of sidewall 25 . The ear-shaped portion 27 is continuous with each of the pair of side walls 25, 25 via the side bent portion 63a. The side bent portion 63a is a bent portion that forms the lower edge of the side wall 25 and forms the base of the triangular ear-shaped portion 27. As shown in FIG. Further, when the container body 2 is viewed from the bottom surface portion 22, the ear-shaped portions 27 are continuous with the bottom surface portion 22 via the bent portions 63a located on both sides of the bottom surface portion 22 in the orthogonal direction Y.
The ear-shaped portion 27 has a flat shape, and has a surface on the side of the side wall 25 (hereinafter, also referred to as a “surface facing the side wall”) and a surface on the opposite side of the surface, that is, a surface on the side of the bottom surface portion 22 (hereinafter, referred to as a “surface facing the side wall”). Also referred to as a “bottom portion facing surface”). A portion of the side seal portion 81 described above is present on the surface of the ear-shaped portion 27 facing the side wall, and the other portion is positioned at the center position of the side wall 25 in the front-rear direction X. As shown in FIG. More specifically, the side seal portion 81 extends from the side wall 25 to the outer end of the ear portion 27 in the orthogonal direction Y (vertex of the triangular shape) so as to bisect the side bent portion 63a. there is

As shown in FIG. 1, the ear-shaped portion 27 of this embodiment is bent along the side bent portion 63a so as to contact the side wall 25. As shown in FIG. The ear-shaped portions 27 are held in a bent state by the cover sheet 4 covering all or part of them. In this embodiment, the covering sheet 4 covers the entire periphery of the container body 2 .
Alternatively, the ear-shaped portion 27 may be bent along the side bent portion 63a so as to contact the bottom portion 22. As shown in FIG.

The spout 3 of this embodiment, as shown in FIG. and a screw thread 32 . The spout 3 is fitted with a cap (not shown) that closes the opening formed in the tubular portion 31 . Such a cap has a plurality of threads formed on its inner peripheral surface, and can be detachably screwed to the tubular portion 31 via the threads 32 of the tubular portion 31 . The spout 3 can be formed by injection molding of synthetic resin or the like.

The container body 2 is formed by bending and joining one continuous sheet material 5A.
The packaging container 1A of the present embodiment has a laminated structure in which a plurality of layers of the sheet material 5A (see FIG. 2) forming the container body 2 are laminated. That is, the sheet material 5A is a laminate of a plurality of film layers. The sheet material 5A has an adhesive region 111 in which the film layers are adhered to each other by a known method such as an adhesive, and a non-adhesive region 110 in which the film layers are not adhered to each other. there is Such non-adhesive areas 110 can encapsulate filler material between the film layers. When the filler is enclosed in the non-adhesive region 110, the laminated structure of the sheet material 5A expands in the thickness direction to form the filler portion 120. As shown in FIG. The filling part 120 includes not only a form in which the filler is enclosed in the non-adhesive region 110 and expanded, but also a form before the filler is enclosed or after the filler is removed and before the filling part 120 expands. be.

A fluid (gas or liquid), a solid (for example, granules, resin pellets, etc.), or a semi-solid (for example, a foam material, etc.) can be used as the filler enclosed in the filling part 120. However, the packaging container 1A From the viewpoint of weight reduction, it is preferable to use a gas as the filler.
Gases used as fillers include, for example, air, nitrogen, oxygen, inert gases (argon, helium, etc.) and the like. From the viewpoint of cost and the like, it is preferable to use air.
The internal pressure of the filling part 120 is not particularly limited, but from the viewpoint of ensuring the rigidity of the packaging container 1A more reliably, it is preferably 10 kPa or more, more preferably 30 kPa or more, and preferably 500 kPa or less, more preferably 500 kPa or more in terms of gauge pressure. It is preferably 60 kPa or less.

The sheet material 5A of this embodiment will be described with reference to FIG. FIG. 2 shows a developed view of the sheet material 5A before the container body 2 is assembled. The sheet material 5A of this embodiment has a shape that is long in one direction, and has a longitudinal direction X1 that is the longitudinal direction of the sheet material 5A and a lateral direction Y1 orthogonal to the longitudinal direction X1. .
The sheet material 5A shown in FIG. 2 has a horizontally long hexagonal top sheet portion 56 that is long in the horizontal direction Y1 and a vertically long hexagonal main body sheet portion 50 that is long in the vertical direction X1. The top sheet portion 56 has a square portion located in the central portion C and an isosceles triangular portion located in the side portions S, S and projecting outward in the horizontal direction Y1 from the square portion. have. The top sheet portion 56 has a through hole 33 through which the cylindrical portion 31 is passed in the square portion.
The body sheet portion 50 and the top sheet portion 56 are connected via a laterally bent portion 61b extending in the lateral direction Y1. In the sheet material 5A of this embodiment, two vertically bent portions 61 that are spaced apart in the horizontal direction Y1 and extend in the vertical direction X1 are formed linearly continuously over the entire length of the sheet material 5A. The top sheet portion 56 and the main body sheet portion 50 are divided into a pair of side portions S, S and a central portion C located between the pair of side portions S, S by two vertically bent portions 61. .

The main body sheet portion 50 is formed with a center bent portion 65 extending in the horizontal direction Y1 so as to bisect the entire length of the sheet portion 50 in the vertical direction X1. The body sheet portion 50 is line-symmetrical about the central bent portion 65 as an axis.
Further, the body sheet portion 50 is formed with a pair of bottom bent portions 63, 63 that are separated from the center bent portion 65 on both sides in the vertical direction X1 and extend in the horizontal direction Y1. The main body sheet portion 50 is divided by a pair of bottom bent portions 63, 63 into a lower sheet portion 52 and peripheral wall sheet portions J1, J2 connected to the lower sheet portion 52 via the bottom bent portion 63 in the vertical direction X1. be done. In the sheet material 5A, the top surface sheet portion 56, the peripheral wall sheet portion J1, the lower sheet portion 52, and the peripheral wall sheet portion J2 are connected in this order along the vertical direction X1 at the center position in the horizontal direction Y1.

The peripheral wall sheet portions J1 and J2 are divided into three regions by the vertically bent portion 61. As shown in FIG. Specifically, the peripheral wall sheet portion J1 adjacent to the top sheet portion 56 includes the front sheet portion 53 located in the central portion C and the side wall sheet portions 551 located on both side portions S, S of the central portion C. , 551 . The other peripheral wall sheet portion J2 is divided into a back sheet portion 54 located in the central portion C and side wall sheet portions 552, 552 located on both side portions S, S of the central portion C. As shown in FIG.
In the container body 2 , the front sheet portion 53 forms the front wall 23 , the lower sheet portion 52 forms the bottom portion 22 and the ears 27 , and the rear sheet portion 54 forms the rear wall 24 . Further, the above-described top surface sheet portion 56 forms the top surface portion 26 .

Side wall sheet portions 551 and 552 located on both left and right sides (both sides in the lateral direction Y1) of the front sheet portion 53 and the back sheet portion 54 form the side walls 25 in the container body 2 . Side wall sheet portions 551, 551 (hereinafter also referred to as "front side sheet portions 551") located on both sides of the front sheet portion 53 form the front portion 251 of the side wall 25 described above. Side wall sheet portions 552 , 552 (hereinafter also referred to as “rear side sheet portions 552 ”) located on both sides of the back sheet portion 54 form the rear portion 252 of the side wall 25 described above.
In the sheet member 5A, the front sheet portion 53 and the front sheet portion 551 are connected in the horizontal direction Y1, and the back sheet portion 54 and the rear sheet portion 552 are connected in the horizontal direction Y1.
Each of the front seat portion 551 and the rear seat portion 552 has a right-angled trapezoidal shape. A portion (lower bottom portion) is adjacent to the front sheet portion 53 or the back sheet portion 54 via the vertically folded portion 61 .
The lower seat portion 52 is defined by two bottom bent portions 63 . The lower sheet portion 52 is connected to the peripheral wall sheet portions J1 and J2 via the bottom bent portion 63 in the longitudinal direction X1.

In the lower seat portion 52, oblique-side bent portions 62 intersecting the horizontal direction Y1 are formed line-symmetrically about the central bent portion 65 as an axis. More specifically, on one end side (left side) of the lower seat portion 52 in the horizontal direction Y1, two oblique side bent portions 62 are formed line-symmetrically about the central bent portion 65, and one end of the central bent portion 65 ( It is formed in an inclined line shape starting from the left end in the horizontal direction Y1 and ending at the intersection of the bottom bent portion 63 and the vertically bent portion 61 . Similarly, on the other end side (right side) of the lower seat portion 52 in the horizontal direction Y1, two oblique side bent portions 62 are formed line-symmetrically about the central bent portion 65, and the other end (lateral side) of the central bent portion 65 It is formed in an inclined line shape starting from the right end in the direction Y1 and ending at the intersection of the bottom bent portion 63 and the vertically bent portion 61 .

The lower sheet portion 52 of the present embodiment has a bottom sheet portion 52a forming the bottom portion 22 in the central portion C, and ear forming sheet portions 57 forming the ear-shaped portions 27 in the side portions S, S. In other words, the lower sheet portion 52 has a bottom sheet portion 52a and ear forming sheet portions 57 located on both sides of the bottom sheet portion 52a. The ear forming sheet portion 57 has a pair of triangular regions e defined by a longitudinally folded portion 61 , two oblique side folded portions 62 , 62 and a center folded portion 65 . Such a triangular region e is the surface of the ear-shaped portion 27 facing the bottom portion. Such region e is hereinafter also referred to as “lower surface region e”. Also, in the ear forming sheet portion 57, two triangles defined by the bottom bent portion 63, the oblique side bent portion 62, and the side edge f1 of the lower sheet portion 52 and having line symmetry about the central bent portion 65 as an axis. are the side wall facing surfaces of the ear-like portion 27 . Such region f is hereinafter also referred to as “upper surface region f”.

The bottom bent portion 63 that defines the lower seat portion 52 is continuous across the entire width of the body seat portion 50 . A portion of the bottom bent portion 63 located at the central portion C forms an edge along the orthogonal direction Y of the bottom portion 22, while portions located at the side portions S, S serve as side bent portions 63a.

The sheet material 5A of this embodiment has the adhesive area and the non-adhesive area as described above. In the peripheral wall sheet portions J1 and J2 of the sheet material 5A, a plurality of central adhesion regions 111a located in the central portion C are intermittently arranged in the longitudinal direction X1, and further laterally along the longitudinally bent portion 61. A bonding region 111b is formed (see FIG. 2). In the sheet material 5A of the present embodiment, a plurality of annular non-bonded regions 110a surrounding the central bonded region 111a are formed continuously in the longitudinal direction X1. As a result, the side portions of the non-bonded regions 110a are aligned in the longitudinal direction X1 to form the non-bonded regions 110 extending in the longitudinal direction X1. These annular non-bonded regions 110a communicate with each other in the longitudinal direction X1. A non-bonded region 110b is arranged adjacent to the side bonded region 111b in the horizontal direction Y1, and the non-bonded region 110b extends in the vertical direction X1. In the peripheral wall sheet portions J1 and J2, the non-bonded area 110b and the annular non-bonded area 110a communicate with each other with the side bonded area 111b interposed therebetween.
Further, the sheet material 5A of the present embodiment has an annular non-adhesive region 110c surrounding the through hole 33 in the central portion C of the top sheet portion 56, and further has an annular non-adhesive region 110c in the bottom sheet portion 52a. 110d. The annular non-bonded region 110c of the top sheet portion 56 communicates with the annular non-bonded region 110a located on the front sheet portion 53 in the longitudinal direction X1, and the annular non-bonded region 110d of the bottom sheet portion 52a is It communicates with each annular non-adhesive region 110a located on the front sheet portion 53 and the back sheet portion 54 in the longitudinal direction X1.

The non-adhesive region 110 formed on the back sheet portion 54 communicates with the filler injection port 130 at the outer end portion in the longitudinal direction X1. The filler injection port 130 communicates with the outside, and the filler can be injected into the non-bonded region 110 through the filler injection port 130 .
In this way, since the filling portion 120 in which the filling material is enclosed is formed in the sheet material 5A, the filling portion 120 acts as a cushion when the packaging container is dropped. On the other hand, high durability is obtained.

The lateral adhesive region 111b of this embodiment is formed apart from the central adhesive region 111a in the lateral direction Y1. On both sides of the lateral adhesion region 111b in the lateral direction Y1, side portions of the annular non-adhesion region 110a and non-adhesion regions 110b extending in the longitudinal direction X1 are located. 2, upper and lower filling portions 123 extending in the height direction Z are formed.
In the packaging container 1A of the present embodiment, since the filling of the filler is blocked in the side adhesion region 111b, the sheet material 5A is easily folded along the vertical folding portion 61, and the shape retention of the container body 2 is further ensured. becomes easier.

In this embodiment, a non-filling portion 121 that partially blocks the filling of the filling material is formed at the end portion of the top and bottom filling portion 123 on the side of the bottom portion 22 . Such a non-filling portion 121 is formed along the side bent portion 63a, as shown in FIG. That is, since the upper and lower filling portions 123 extend to the ear-forming sheet portion 57 (ear-shaped portion 27) and the portions along the side bent portions 63a are the non-filling portions 121, the upper and lower filling portions The flow path of the filler at 123 is locally narrowed at the position of the side bend 63a. As a result, bulging of the filling portion 120 due to the filling material can be suppressed at the side bent portion 63a and its vicinity, so that bending at the side bent portion 63a accompanying the bulging of the upper and lower filling portions 123 is further guided. As a result, the ear-shaped portion 27 can be easily bent, and the state in which the ear-shaped portion 27 abuts against the side wall 25 can be easily maintained. Such an effect is effective in maintaining the container body 2 in a fixed three-dimensional shape such as a cube or rectangular parallelepiped. In addition, by bending the ear-shaped portions 27, the bottom surface portion 22 is easily held flat, and the self-supporting property of the packaging container is further improved.
The non-filling portion 121 of this embodiment can be formed by providing the bonding region 111 within the non-bonding region 110 . That is, the bonding region 111 becomes the non-filling portion 121 . Non-filling portions 121 (non-adhesive regions 110 ) are intermittently formed along bottom bent portion 63 .

A method of forming the container body 2 using the sheet material 5A of this embodiment will be described. First, the sheet material 5A is folded in two along the center folding portion 65. As shown in FIG. With the sheet material 5A folded in two, the side portions of the opposing portions are joined together in a straight line to form side seal portions 81. As shown in FIG. Such a side seal portion 81 joins the side edges along the longitudinal direction X1 of the main body sheet portions 50 facing each other. As a result, the front sheet portion 551 and the rear sheet portion 552 of the side portions S, S of the body sheet portion 50 are joined together, and the edges f1 of the upper surface region f on the lateral direction Y1 outer side are joined together. .

Next, the folded portion 61b of the top sheet portion 56 is folded into a mountain fold, and the isosceles triangular portions of the side portions S, S of the top sheet portion 56 are folded to the side seal portion 81 (side wall 25) side. fold into Next, the two equal sides of the isosceles triangular portion of the top sheet portion 56 and the upper edges of the front sheet portion 551 and the rear sheet portion 552 (peripheral edges of the oblique sides of the right-angled trapezoidal shape) are They are joined to form a V-shaped seal portion 82 . The V-shaped seal portion 82 and the side seal portion 81 are connected to form a Y-shaped seal portion on the side wall 25 .
Next, the vertical direction X1 outer edge of the square portion located in the central portion C of the top sheet portion 56 and the vertical direction X1 outer edge of the back sheet portion 54 are joined by the upper end seal portion 88. do. Thereby, the top surface portion 21 and the pair of side walls 25, 25 are formed. The side wall 25 includes the front seat portion 551 , the rear seat portion 552 , and the isosceles triangular portion of the top seat portion 56 .

Next, a filler such as air is filled from the filler inlet 130 . The non-bonded area 110 swells due to the filling of such a filler. Since the adhesive region 111 (non-filled portion 121) is not filled with the filler, the bent portions 61 and 63 formed with the adhesive region 111 are naturally bent as the non-bonded region 110 bulges, and the sheet material 5A is folded into a box. formed into a shape. More specifically, the central folded portion 65 is unfolded in two, and the four lateral portions S, S of the lower sheet portion 52 are folded so that the bottom sheet portion 52a and the lower surface region e form a continuous flat bottom surface. is bent in a mountain fold. Further, the bottom bent portion 63 in the central portion C is folded in a mountain fold so that the front sheet portion 551 and the rear sheet portion 552 stand up from the bottom sheet portion 52a, and the bottom bent portion 63 in the side portion S (lateral The bent portion 63a) is bent in a valley fold. The side bent portion 63a is bent so as to intersect a portion of the bottom bent portion 63 located in the central portion C. As shown in FIG. That is, the side bent portion 63a is bent along the front-rear direction X into a valley fold. As a result, the upper surface region f and the lower surface region e of the ear-forming sheet portion 57 overlap to form the flat ear-shaped portion 27 . The upper surface area f serves as the side wall facing surface of the ear-shaped portion 27 , and the lower surface area e serves as the bottom surface facing surface of the ear-shaped portion 27 . Also, the bottom sheet portion 52 a becomes the bottom portion 22 .

The bottom portion 22 formed in this manner is continuous with the front wall 23 and the rear wall 24 via the bottom bent portion 63 as described above.
The side bent portion 63 a forms a boundary portion between the side walls 25 , 25 and the ear-like portion 27 . That is, the ear-shaped portion 27 is continuous with the side wall 25 via the side bent portion 63a. Further, the side bent portion 63a serves as a boundary portion that divides the side seal portion 81 into a portion present on the side wall 25 and a portion present on the ear-shaped portion 27 (surface facing the side wall).
In this manner, the container body 2 having a housing space surrounded by the front wall 23, the rear wall 24, the bottom portion 22, the pair of side walls 25, 25, and the top portion 26 is formed.

The packaging container 1A of this embodiment is formed by folding the sheet material 5A at each folding portion, and the bottom surface portion 22 and the ear-shaped portions 27 are formed by the peripheral walls (the front wall 23 and the rear wall) of the container body 2 adjacent thereto. 24, contiguous with the sidewall 25). Such a container body 2 is less likely to break even if an impact is applied to the lower portion thereof. More specifically, when the container body is formed by bonding separate sheets together, there is a risk that the bonding will be released and the sheets will peel off when an impact is applied to the bonded portions of the sheets. For example, when the container drops, the lower part of the container body is likely to receive the impact of the drop and the load of the contents inside the container. Therefore, if there is a portion where the sheets are joined to each other in the lower portion, the sheets are likely to separate from each other due to the impact and load, and the container body is damaged. On the other hand, the container body 2 of the present embodiment has a bottom surface portion 22 continuous with the front wall 23 and the rear wall 24, respectively, and ear-shaped portions 27 continuous with the bottom surface portion 22 and the side walls 25, respectively. There are no joints between the sheets at the bottom. As a result, the container body 2 is less likely to be damaged due to the separation of the sheets. Moreover, in the packaging container 1A of the present embodiment, the ear-shaped portions 27 are kept folded by the covering sheet 4, so that the strength of the lower portion of the container body 2 where the ear-shaped portions 27 are located can be maintained high. Furthermore, since the sheet material 5A forming the container body 2 has the filling portion 120, the durability of the container body 2 can be maintained high.
As described above, the packaging container 1A of the present embodiment has excellent durability against impact caused by dropping or the like. In addition, since the bent portions 61 and 63 of the sheet material 5A are naturally bent as the non-adhesive region 110 (filling portion 120) bulges, the box-shaped container body 2 can be easily assembled. Such bulging of the non-bonded area 110 (filling portion 120 ) is also effective in maintaining the three-dimensional shape of the container body 2 .

Further, in the present embodiment, the ear-shaped portions 27 are held in a folded state by the covering sheet 4, so that the packaging container 1A as a whole becomes compact and a good appearance can be obtained.
Since the ears 27 of this embodiment are bent so as to contact the side wall 25 , the lower portion of the side seal portion 81 is protected by the ears 27 . As a result, in the lower portion of the container body 2, the resistance to impact such as dropping (hereinafter also referred to as "impact resistance") can be further improved.

As the sheet material 5A, for example, a film sheet material made of synthetic resin, a laminated sheet material made of a laminate of a film layer made of synthetic resin and a metal layer such as aluminum, or a film layer made of synthetic resin and a metal such as aluminum can be used.
When the sheet material 5A includes a film sheet material or a film layer made of synthetic resin, polyolefin resin, polyester resin, polyamide resin, or the like can be used as the synthetic resin.
Polyolefin resins include high-density polyethylene (HDPE), medium-density polyethylene (MDPE), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), and ultra-low-density polyethylene (ULDPE). Stretched uniaxially oriented polyethylene (OPE), biaxially oriented polyethylene (BOPE), polyethylene resins such as ethylene vinyl alcohol copolymer (EVOH), polypropylene (PP), homopolypropylene, random copolymer polypropylene, etc. mentioned.
Polyester-based resins include polyethylene terephthalate (PET), amorphous polyethylene terephthalate (amorphous PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), and the like.
Examples of polyamide-based resins include nylon 6, nylon 66, and aromatic nylon.
From the viewpoint of facilitating the formation of the container body 2, the sheet material 5A preferably has a sealant layer mainly composed of a thermoplastic resin such as the polyolefin resin on the inner surface thereof.

From the viewpoint of further improving the strength of the container body 2, the thickness of the sheet material 5A is preferably 70 μm or more and 200 μm or less.
Each sealing portion such as the side sealing portion 81 forming the container body 2 can be formed by various known methods such as heat sealing, ultrasonic sealing, high-frequency sealing, or the like, and bonding with an adhesive.

The cover sheet 4 of this embodiment is a shrink label provided by a known method. 2, the container body 10 is covered. This coating maintains the bent state of the ear-shaped portion 27 .

The packaging container 1A of this embodiment has a container body 2 covered with a covering sheet 4 . A method of forming such a packaging container 1A will be described below.
First, the container body 2 is assembled by folding and joining the sheet material 5A as described above. At this stage, the ears 27 are not yet folded. Next, the ears 27 are bent at the side bent portions 63 a so that the ears 27 are brought into contact with the side walls 25 , and the container body 2 is covered with the cover sheet 4 which has been formed into a cylindrical shape in advance. Thereafter, by thermally shrinking the covering sheet 4 , the periphery of the container body 2 is covered with the covering sheet 4 , and the folded state of the ear-shaped portions 27 is maintained by the covering sheet 4 .

Next, another embodiment of the packaging container of the present invention will be described. In the following description, components different from those of the embodiment shown in FIGS. 1 and 2 will be mainly described, and similar components will be denoted by the same reference numerals, and description thereof will be omitted. The description of the above-described embodiment is appropriately applied to components that are not particularly described.
Also, in the following description, the same reference numerals are given to the components common to different embodiments, and the description thereof is omitted. Also in this case, the description of the common components is appropriately applied.

FIG. 3 shows a packaging container 1B of the second embodiment. Although the covering sheet 4 of the first embodiment described above covers the entire periphery of the container body 2, the covering sheet according to the present invention is not limited to such a form. As shown in FIG. 3, the covering sheet 4B may be a sheet that partially covers the sidewall 25. As shown in FIG. A tack label is used for the covering sheet 4B shown in FIG. A tack label is a label having an adhesive layer made of an adhesive on one side, and a known label can be used.
When a tack label is used for the covering sheet 4B, the covering sheet 4B may be attached to the side wall 25 so as to cover the entire ear-shaped portion 27. FIG.

1 C of packaging containers of 3rd Embodiment have the filling part 120 between the layers in the laminated structure of 5 C of sheet materials like 1st Embodiment. 1 C of packaging containers of this embodiment also have the filling part 120 extended in the height direction Z on each of a pair of side walls 25 and 25 similarly to 1st Embodiment.
As shown in FIG. 4, the container main body 2C includes a top surface portion 26 that is continuous with the front wall 23 and the rear wall 24 via a bent portion 64 in the front-rear direction X. As shown in FIG.
The container body 2</b>C of the present embodiment has top surface ears 28 extending outward from between the top surface 26 and the pair of side walls 25 in the orthogonal direction Y. As shown in FIG. The top surface ear-shaped portion 28 has a flat triangular shape, like the ear-shaped portion 27 of the first embodiment. The top surface ear-shaped portion 28 has a surface on the top surface portion 26 side (hereinafter also referred to as a “top surface portion facing surface”) and a surface on the side wall 25 side (sidewall facing surface). In this way, in addition to the ear-shaped portions 27 extending in the orthogonal direction Y from between the bottom surface portion 22 and the side walls 25, the top surface ear-shaped portions 28 may be provided.
The top surface ear-shaped portions 28 of the present embodiment are continuous with the pair of side walls 25 via the top surface side bent portions 64a. The top surface side bent portion 64 a is a bent portion that forms the upper edge of the side wall 25 and forms the base of the triangular top surface ear-shaped portion 28 .
The top surface ear-shaped portion 28 is bent along the top surface side bent portion 64a so as to be in contact with the side wall 25. As shown in FIG. Alternatively, the top surface ear-shaped portion 28 may be bent along the top surface side bent portion 64a so as to be in contact with the top surface portion 26 .

The top surface ear-shaped portion 28 is held in the folded state by the covering sheet 4 that covers all or part of the top surface ear-shaped portion 28 . The top surface ear-shaped portion 28 of this embodiment is held in its folded state by the cover sheet 4 that covers the entire periphery of the container body 2C. It may be a sheet that covers the

The side seal portion 81 of this embodiment is formed at the center position of the side wall 25 in the orthogonal direction Y and extends in the height direction Z, as in the first embodiment. The side seal portion 81 extends to the outer end (vertex of the triangle) in the orthogonal direction Y of the ear-shaped portion 27 on the side of the bottom portion 22 so as to bisect the side bent portion 63a. (not shown). Further, the side seal portion 81 extends to the outer end (vertex of the triangle) in the orthogonal direction Y of the top surface ear-shaped portion 28 so as to bisect the top surface side bent portion 64a (Fig. not shown).

The container main body 2</b>C of this embodiment has a top surface seal portion 89 that traverses the top surface portion 26 in the orthogonal direction Y. As shown in FIG. The top surface seal portion 89 is connected to the upper end of the side seal portion 81 and is continuous between the outer ends in the orthogonal direction Y on the surfaces of the top surface ear-shaped portions 28 facing the top surface portion. Further, the top surface seal portion 89 is erected with respect to the top surface portion 26 while the spout 3 is fixed. The top surface seal portion 89 is formed on the top surface portion 26 so as to divide the top surface portion 26 and the top surface ear-shaped portion 28 into two parts, one on the front wall 23 side and the other on the back wall 24 side. In addition, in the top surface ear-shaped portion 28, the top surface seal portion 89 formed on the surface facing the top surface and the side seal portion 81 formed on the side wall facing surface are aligned with each other. Portions 81 and 89 overlap.
Hereinafter, when the top surface portion 26 is divided into the front wall 23 side and the rear wall 24 side with the top surface seal portion 89 as a boundary, the portion on the front wall 23 side is also referred to as the "front side top surface portion 26a". The portion on the side of 24 is also referred to as "back side top surface portion 26b". In the top surface portion 26, the top surface seal portion 89 joins a front-side top surface sheet portion 56a and a back-side top surface sheet portion 56b, which will be described later (see FIG. 5).

The top surface ear-shaped portion 28 of the present embodiment is divided into the front wall 23 side and the rear wall 24 side with the side seal portion 81 or the top surface seal portion 89 as a boundary. Hereinafter, when the top surface ear-shaped portion 28 is divided into the front wall 23 side and the rear wall 24 side with the side seal portion 81 or the top surface seal portion 89 as a boundary, the portion on the front wall 23 side is referred to as the "front side ear". The portion on the side of the back wall 24 is also referred to as a "back-side ear-shaped portion 28b". The side sealing portions 81 of the top ear-shaped portion 28 join the lower surface region i of the front side ear forming sheet portion 58a and the lower surface region i of the back side ear forming sheet portion 58b, which will be described later. In addition, the top surface sealing portion 89 of the top surface ear-shaped portion 28 joins the top surface region h of the front side ear forming sheet portion 58a and the top surface region h of the back side ear forming sheet portion 58b, which will be described later.

As shown in FIG. 5, the sheet material 5C of the third embodiment has a substantially rectangular shape elongated in the vertical direction X1, and has two vertically folded portions 61 spaced apart in the horizontal direction Y1 and extending in the vertical direction X1. are divided into a pair of side portions S, S and a central portion C located between the pair of side portions S, S. The sheet material 5C has laterally bent portions 64 extending in the lateral direction Y1, which are formed separately from both ends of the sheet material 5C in the longitudinal direction X1 toward the center in the longitudinal direction X1. Both ends define end regions E1 and E2 that extend across the entire width of the sheet material 5C. A portion of the laterally bent portion 64 located on the side portion S serves as a top surface side bent portion 64a.
The sheet material 5C of the present embodiment is formed with two bottom bent portions 63, 63 positioned more centrally in the vertical direction X1 than the laterally bent portion 64. As shown in FIG. Similar to the first embodiment, the bottom bent portion 63 and the vertically bent portion 61 are positioned at the center of the sheet material 5C in the longitudinal direction X1 and on both sides of the lower sheet portion 52 in the lateral direction Y1. It defines an ear-forming sheet portion 57 . Also, in the sheet material 5C, a central bent portion 65 extending in the lateral direction Y1 is formed between the two bottom bent portions 63, 63 at the central position in the longitudinal direction X1. The lug forming sheet portion 57 is formed with an oblique bent portion 62 that divides the lug forming sheet portion 57 into the aforementioned triangular regions e and f.
Further, the vertically folded portion 61 defines a front sheet portion 53 and a front sheet portion 551 between the laterally folded portion 64 and the bottom portion folded portion 63 in the vertical direction X1, and also defines a rear sheet portion 54 and a rear sheet portion. 552.

The longitudinally bent portion 61 is formed by folding a front top sheet portion 56a forming the front top portion 26a and front ear forming sheet portions 58a, 58a in an end region E1 adjacent to the front sheet portion 53 in the longitudinal direction X1. is defining. That is, in the end region E1, the front side top sheet portion 56a is positioned in the central portion C, and the front side ear forming sheet portions 58a, 58a are positioned in both side portions S, S. The front ear-forming sheet portions 58a, 58a form the front ear-shaped portions 28a, 28a in the container body 2C.
In addition, in the end region E2 adjacent to the back sheet portion 54 in the longitudinal direction X1, the vertically bent portion 61 is formed by a back side top sheet portion 56b forming the back side top portion 26b and back side ear forming sheet portions 58b, 58b. defines That is, in the end region E2, the back-side top sheet portion 56b is positioned in the central portion C, and the back-side ear forming sheet portions 58b, 58b are positioned in both side portions S, S. The back-side ear-forming sheet portions 58b, 58b form the back-side ear-shaped portions 28b, 28b in the container body 2C.

Each of the front side ear forming sheet portions 58a, 58a and the rear side ear forming sheet portions 58b, 58b has a square shape and has oblique bent portions 66 extending diagonally toward the four corners of the sheet material 5C. These ear forming sheet portions 58a and 58b are divided into triangular regions h and i with the oblique side bent portion 66 as a boundary. Of these bisected regions, the regions adjacent to the top sheet portions 56a and 56b (regions on the inner side in the lateral direction Y1) are regions h that serve as surfaces facing the top surface portion of the top surface ear-shaped portion 28, The other region (the region on the outer side in the horizontal direction Y1) becomes the region i that is the side wall facing surface. Hereinafter, the region h serving as the top surface facing surface is also referred to as the “upper surface region h”, and the region i serving as the side wall facing surface is also referred to as the “lower surface region i”.

The sheet material 5C of this embodiment has a central adhesive area 111a in the front sheet portion 53, the back sheet portion 54, and the bottom sheet portion 52a, and has side adhesive areas 111b along the longitudinally bent portions 61. . The sheet material 5C also has an annular non-bonded region 110a surrounding the central bonded region 111a, and a non-bonded region 110b adjacent to the side bonded region 111b in the lateral direction Y1 and extending in the longitudinal direction X1. there is Further, the sheet material 5C has semi-annular non-bonded areas 110c1 and 110c2 on the front side top sheet portion 56a and the back side top sheet portion 56b, respectively. Such semi-annular non-bonded regions 110c1 and 110c2 communicate with the annular non-bonded region 110a in the front sheet portion 53 or the back sheet portion 54 in the longitudinal direction X1, and in the container body 2C assembled from the sheet material 5C, An annular filling portion 120 surrounding the spout 3 is formed.
A filler injection port 130 extending outward in the longitudinal direction X1 is formed in the central portion C of the end region E2 adjacent to the back sheet portion 54 in the longitudinal direction X1.

When the container body 2C is formed from the sheet material 5C of this embodiment, the sheet material 5C is folded in two along the central bent portion 65 as in the first embodiment. In this folded state, the side portions of the opposing portions are joined together in a straight line to form side seal portions 81 . The side sealing portion 81 joins the laterally Y1 outer side edges of the front side sheet portion 551 and the rear side sheet portion 552 facing each other, and also seals the lower sheet portion 52 in the upper surface region f of the ear forming sheet portion 57 . are joined together at their side edges f1. Further, the edges i1 outside in the horizontal direction Y1 in the lower surface regions i of the front and rear ear forming sheet portions 58a and 58b are joined together.

Next, the spout 3 is inserted between the opposite end regions E1 and E2 of the sheet material 5C folded in two, and in this state, the spout 3 is positioned on the outer side of the end regions E1 and E2 in the longitudinal direction X1 and in the lateral direction Y1. The extending edges (hereinafter also referred to as "outer edges") are joined together in a straight line to form a top surface seal portion 89, and the spout 3 is disposed between the both end regions E1 and E2 (top surface portion 26). fixed to Thus, the spout 3 is fixed to the top surface portion 26 by the top surface seal portion 89 . The top seal portion 89 joins the outer edges in the longitudinal direction X1 of the front top sheet portion 56a and the back top sheet portion 56b facing each other, and seals the front and back ear forming sheet portions 58a and 58b. The outer edges h1 of the upper surface regions h of are joined together.

Next, a filler such as air is filled from the filler inlet 130 . As the filling material is filled, the non-bonded area 110 expands, the bent portions 61 and 63 are bent, and the sheet material 5C is formed into a box shape. In particular, since the adhesive region 111 (non-filled portion 121) is not filled with the filler, the bent portions 61 and 63 formed with the adhesive region 111 are naturally bent as the non-bonded region 110 expands. More specifically, the two folds at the central bent portion 65 are released, and the vertical bent portion 61 and the bottom bent portion 63 and the lateral bent portion 64 at the central portion C are bent into mountain folds. On the other hand, the bottom bent portion 63 (lateral bent portion 63a) and the lateral bent portion 64 (top surface side bent portion 64a) of the side portions S, S are bent into valley folds. The valley-folded side bent portion 63a is bent so as to intersect a portion of the bottom bent portion 63 located at the central portion C, and is in a state along the front-rear direction X. As shown in FIG. Further, the valley-folded top surface side bent portion 64a is bent so as to intersect the portion of the laterally bent portion 64 located at the central portion C, and is in a state along the front-rear direction X. As shown in FIG.
By these mountain folds and valley folds, the upper surface region h and the lower surface region i are overlapped to form a flat top surface ear-shaped portion 28 . That is, the top surface side bent portion 64a between the lower surface region i and the side wall 25 overlaps with the vertical bent portions 61 in the end regions E1 and E2. Furthermore, a continuous flat surface is formed by the upper surface region h of the top surface ear-shaped portion 28 and the top surface portion 26 . In addition, the upper surface region f and the lower surface region e of the ear forming sheet portion 57 overlap to form a flat ear-shaped portion 27 , and the top surface portion 26 and the bottom surface portion 22 and the space between the top surface portion 26 and the bottom surface portion 22 are formed. locating sidewalls 25 are formed.
In the top surface ear-shaped portion 28 formed in this manner, the upper surface region h serves as the surface facing the top surface portion, and the lower surface region i serves as the side wall facing surface. The top surface ear-shaped portions 28 of the present embodiment are bent along the top surface laterally bent portions 64 a so as to contact the side walls 25 , and the cover sheet 4 holds the bent state.

In this embodiment, the top surface side bent portion 64 a forms a boundary portion between the top surface portion 26 and the top surface ear-shaped portion 28 . That is, the top surface ear-shaped portion 28 is continuous with the top surface portion 26 via the top surface side bent portion 64a. In addition, the top surface side bent portion 64a serves as a boundary portion that divides the top surface seal portion 89 into a portion that exists on the top surface portion 26 and a portion that exists on the top surface ear-shaped portion 28 (the surface facing the top surface portion). .

In the packaging container 1C of this embodiment, non-filling portions 121 are intermittently formed along not only the bottom bent portion 63 but also the laterally bent portion 64 (not shown). The non-filling portion 121 is formed along the side bent portion 64a of the top surface, as shown in FIG. As a result, the bending of the top surface side bent portions 64 a is further guided, making it easier to bend the top surface ear-shaped portion 28 and to maintain the state in which the ear-shaped portion 28 abuts against the side wall 25 . Such an effect is effective in maintaining the container body 2 in a fixed three-dimensional shape such as a cube or rectangular parallelepiped.

The present invention is not limited to each embodiment described above, and can be modified as appropriate. Moreover, you may combine embodiment mentioned above.
For example, although the containers of the embodiments described above are self-supporting containers, they may be used in a state other than a self-supporting state. For example, the container may be used in a suspended state so that the discharge tool side of the container faces downward in the vertical direction.
Moreover, the packaging container of the present invention may include a pump dispenser detachably attached to the container body 10 instead of the spout 3 to which the cap is attached.

1A, 1B, 1C packaging container 2, 2C container body 22 bottom portion 23 front wall 24 rear wall 25 side wall 26 top surface portion 27 ear-shaped portion 28 top surface ear-shaped portion 3 spout 31 cylindrical portion 32 screw 33 through hole 4 coating Sheets 5A, 5C Sheet material 50 Main body sheet portion 52a Bottom sheet portion 53 Front sheet portion 54 Back sheet portion 55 Side wall sheet portion 56 Top sheet portion 57 Ear forming sheet portion 58 Top ear forming sheet portion 61 Vertical bending portion 62 Oblique side bending Part 63 Bottom bent part 63a Side bent part 64 Lateral bent part 64a Top surface side bent part 65 Central bent part 81 Side seal part 82 V-shaped seal part 89 Top seal part 100 Jig 101 Holding plate 110 Non-bonded Area 111 Adhesion Area 120 Filling Part 121 Non-Filling Part 130 Filling Material Injection Port X Front-Back Direction Y Orthogonal Direction Z Height Direction

Claims (6)

A packaging container comprising a container body having a space for containing contents therein,
The container body is
It is formed by folding and joining one continuous sheet material,
The sheet material has a laminated structure in which a plurality of layers are laminated, and a filling portion in which a filler is enclosed is formed between the layers of the sheet material,
a bottom surface portion, a front wall and a rear wall that are continuous with the bottom surface portion via a bent portion in the front-rear direction and face each other in the front-rear direction; and a pair of side walls facing each other in the cross direction,
an ear-shaped portion extending outward from between the bottom portion and the pair of side walls in the cross direction;
The ear-shaped portions are continuous with the pair of side walls via laterally bent portions, and are bent along the laterally bent portions so as to abut on the side walls or the bottom surface,
A packaging container, wherein the folded state of the ears is held by a cover sheet that covers all or part of the ears. The container body has a side sealing portion formed by joining the side portions of the opposed portions by folding the sheet material in two, and the side sealing portion is partially ear-shaped. 2. The packaging container according to claim 1, wherein the portion is present on the surface facing the side wall, and the other portion is located at the center position of the side wall. The packaging container according to claim 1 or 2, wherein the covering sheet is a shrink label. The packaging container according to claim 1 or 2, wherein the covering sheet is a tack label. The pair of side walls are each formed with the filling portion extending in the height direction of the container body, and the end portion of the filling portion on the side of the bottom portion is a non-filling portion that partially blocks the filling of the filling material. The packaging container according to any one of claims 1 to 4, wherein a part is formed. The container body includes a top surface portion continuous with the front wall and the back wall via a bent portion in the front-rear direction, and extends outward from between the top surface portion and the pair of side walls in the cross direction. It has an ear-shaped part on the top surface,
The top surface ear-shaped portion is continuous with each of the pair of side walls via the top surface side bent portion, and is bent along the top surface side bent portion so as to be in contact with the side wall or the top surface portion. and
The packaging container according to any one of claims 1 to 5, wherein the folded state of the top surface ear-shaped portion is held by the covering sheet covering all or part of the top surface ear-shaped portion. .

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