JP7326654B2 - packaging container - Google Patents

Description

The present invention relates to packaging containers. More specifically, the present invention relates to a packaging container capable of reducing the amount of liquid left in the inner bag of a bag-in-box (also called a bag-in-carton).

The bag-in-box is capable of enclosing liquids such as liquid beverages, liquid cosmetics, liquid medicines, etc., and has an inner bag having a spout for pouring out the enclosed liquid to the outside, and stores the inner bag to retain the outer shape. It is a box composed of an outer box. If the liquid continues to be poured out from the spout of the bag-in-box, eventually the liquid will stop coming out of the spout. At this time, due to the structure of the inner bag, a certain amount of liquid remains at the bottom of the inner bag as an unpoured liquid. In order to drain the liquid remaining at the bottom of the inner bag (also referred to as residual liquid), the user had to manually tilt the entire back-in box.

As for the residual liquid at the bottom, for example, Patent Document 1 proposes a back-in box for reducing the amount. This back-in-box is formed by turning up a part of the bottom surface opposite to the spout side and bending that part to form a convex body, thereby raising the rear part of the bag-in-box. is tilted toward the spout side. The ridgeline of the formed convex body is obliquely formed with respect to the bottom surface of the bag-in-box. Since the rear part of the bag-in-box is supported by the ridgeline of the formed convex body, the ridgeline of the convex body must be stably supported in order for the convex body to stably support the rear part of the bag-in-box. preferably grounded to

However, in order to ground the ridgeline of the convex body, the bending angle must be adjusted when forming the ridgeline. In addition, since the ridgeline is not symmetrical, the support of the rear portion of the bag-in-box was somewhat unstable.

JP 2009-298450 A

In response to this problem, the present applicant has filed an application for a packaging container 101 (unpublished application) in which a convex body M with bilaterally symmetrical folding lines 151a can be provided at the rear of the back-in box, as shown in FIG. )are doing. In the packaging container 101, as shown in FIGS. 7 and 8, the bottom cover 15 is formed by folding the right side plate connecting bottom flap 154 and the left side plate connecting bottom flap 152 along the folding lines 13a and 14a, respectively. The face plate connecting bottom flap 153 and the rear plate connecting bottom flap 151 are formed by bending along the folding lines 11a and 12a in that order and overlapping them. Therefore, as shown in FIG. 7A, the bottom lid 15 has a slight step because the rear plate connecting bottom flap 151 overlaps the front plate connecting bottom flap 153, and the bottom lid 15 is not flat.

In addition, as shown in FIG. 8, the packaging container 101 is provided with a long front plate connecting bottom flap 153 for forming the convex body M, so there is a drawback that corrugated cardboard with a large area is required. there were. Further, in the packaging container 101, the front plate connecting bottom flap 153 is folded back along the folding line 153a to form a bent piece I to form an acute angle portion, and then the rear plate connecting bottom flap 151 is folded inward along the folding line 151a, The bent tip portion E is brought into contact with the acute-angled portion to form a convex body M having the folding line 151a as the top. As described above, the procedure for forming the convex body M is special, and a dedicated box making machine is required.

The present invention has been made to solve the above problems, and its object is to stably incline the entire bag-in-box so that the front portion of the bag-in-box having a spout is lowered. To provide a packaging container which has a flat bottom and is easy to form without increasing the area of corrugated cardboard.

A packaging container according to the present invention is a packaging container for packaging a bag having an outlet for dispensing liquid,
A front plate capable of forming a fixing hole for penetrating and holding the spout, a rear plate arranged at a position facing the front plate, and a band-like structure connecting the front plate and the rear plate. A right side plate and a left side plate forming a body, a front plate connecting bottom flap connected to the bottom of the front plate, a rear plate connecting bottom flap connected to the bottom of the rear plate, and a bottom of the right side plate. a bottom cover formed by folding and overlapping a plurality of bottom flaps, each of which includes a right side plate connecting bottom flap and a left side plate connecting bottom flap connected to the bottom of the left side plate, at respective connecting portions. ,
Either the right side plate connecting bottom flap or the left side plate connecting bottom flap is provided with a convex body forming portion capable of forming a convex body having a ridge line parallel to the bottom side of the back plate. cage,
On the bottom flap on the side where the convex body forming part is provided, there are a valley fold line for valley folding the convex body forming part, a cut line for separating other than the valley fold line, and an intermediate part between the cut off convex body forming part A ridge line that is mountain-folded at a position and a tip on the opposite side of the valley-fold line are formed,
The bottom flap on the side where the convex body forming part is not provided is formed with a slit part into which the tip part can be inserted to form the convex body.

According to this invention, the bottom flap on the side where the convex body forming portion is provided is folded along the valley fold line and mountain-folded along the ridge line, and the tip portion is the bottom surface on the side where the convex body forming portion is not provided. It can be inserted into the slit of the flap to form a convex body. As a result, the whole packaging container can be stably inclined so that the front portion of the packaging container having the spout is lowered. Furthermore, this packaging container can be formed without increasing the area of the corrugated cardboard, has a flat bottom, and is easy to form.

In the packaging container according to the present invention, the tip of the convex-shaped body forming portion includes an insertion portion having a length L2 smaller than the length L1 of the slit portion and capable of being inserted into the slit portion, and a length of the slit portion. It has an engaging portion with a length L3 that is larger than L1 and can be engaged with the slit portion.

In the packaging container according to the present invention, the bottom flap on the side not provided with the convex body forming portion is provided with a notch portion at the end portion on the back plate side.

In the packaging container according to the present invention, in the bottom flap on the side where the convex body forming part is provided, the width from the folding line to the opposite side of the folding line for folding the bottom flap is the width of the convex body forming part It is the same as the width to the outer edge.

In the packaging container according to the present invention, the bottom flap on the side where the convex body forming portion is provided is folded along the valley fold line and mountain-folded along the ridge line, and the tip portion is the convex body forming portion. The projecting body is formed by being inserted into the slit portion of the bottom flap on the side where the is not provided.

In the packaging container according to the present invention, the bag body is an inner bag forming a bag-in-box, and the packaging container is an outer box forming the bag-in-box.

According to the present invention, the entire bag-in-box can be stably inclined so that the front part of the bag-in-box having the outlet is lowered, and the bottom is flat and the forming procedure is simple without increasing the area of the cardboard. An easy packaging container can be provided.

1 is an exploded view showing an example of a packaging container according to the present invention; FIG. 1 is an external perspective view of a bag-in-box containing a packaging container according to the present invention; FIG. FIG. 4 is a perspective view showing a state after the packaging container is turned upside down so that the bottom lid faces upward, and a convex body is formed on the bottom lid. FIG. 4 is a perspective view showing a form before forming a convex body on the bottom cover in FIG. 3 ; FIG. 4 is a perspective view showing an intermediate state in which a convex body is formed on the bottom cover in FIG. 3 ; (A) is an explanatory view showing a form in which the packaging container is placed before forming the convex body on the bottom lid, and (B) is an illustration after forming the convex body on the bottom lid and tilting the packaging container. It is explanatory drawing which shows a form. (A) is an explanatory diagram showing a comparative form in which the packaging container is placed before forming the convex body on the bottom lid, and (B) is an illustration after forming the convex body on the bottom lid and tilting the packaging container. is an explanatory diagram showing a comparative form of. FIG. 8 is an exploded view of the packaging container shown in FIG. 7;

A packaging container according to the present invention will be described with reference to the drawings. The present invention is not limited to the following embodiments. As shown in FIG. 1, the packaging container according to the present invention can be assembled by providing folding lines, slits, etc. in each part of a single plate-like (sheet-like) member, and bending or cutting each part. but not limited to this. A plurality of members constituting the packaging container may be connected and assembled.

[Packaging container]
A packaging container 1 according to the present invention is used for packaging a bag having an outlet for dispensing a liquid such as a liquid beverage, a liquid cosmetic, a liquid drug, etc., and maintaining the outer shape of the bag. As shown in FIGS. 1 to 6, its basic configuration is a packaging container for packaging a bag body 2 having a spout 21 for spouting liquid, and the spout 21 is passed through and held. A front plate 11 capable of forming a fixing hole 5, a rear plate 12 disposed at a position facing the front plate 11, and a right side portion connecting the front plate 11 and the rear plate 12 to form a belt-like body. It has at least a face plate 13, a left side plate 14, and a bottom lid 15 formed by folding bottom flaps 151 to 154 at respective connecting portions and overlapping them.

A feature of the present invention is that the bottom flap of either the right side plate connecting bottom flap 154 or the left side plate connecting bottom flap 152 can form a convex body 30 having a ridge line 33 parallel to the bottom side of the rear plate 12. A shape forming portion 31 is provided. The bottom flap (the left side plate connecting bottom flap 152 in the case of FIGS. 1 to 5) on the side where this convex body forming part 31 is provided has a valley fold line 32 for valley folding the convex body forming part 31 and its A cutting line 36 that cuts off the portion other than the valley fold line, a ridge line 33 that folds the mountain at an intermediate position of the cut protrusion forming portion 31, and a tip portion 34 on the opposite side of the valley fold line 32 are formed. On the other hand, the tip portion 34 can be inserted into the bottom flap (the right side plate connecting bottom flap 154 in the case of FIGS. 1 to 5) on the side where the convex body forming portion 31 is not provided to form the convex body 30. A slit portion 41 is formed.

In the packaging container 1 of the present invention having such characteristics, the bottom flap on the side where the convex body forming portion 31 is provided is folded at the valley fold line 32 and mountain-folded at the ridge line 33, and the tip portion 34 is convex. The convex body 30 can be formed by being inserted into the slit part 41 of the bottom flap on the side where the body forming part 31 is not provided. As a result, the whole packaging container 1 can be stably inclined so that the front portion of the packaging container 1 having the spout 21 is lowered, and the amount of liquid remaining in the bag can be reduced. Further, the packaging container 1 can be formed without increasing the area of the corrugated cardboard, has a flat bottom, and is easy to form.

Note that "at least" is because it typically has a top lid 16 formed by overlapping top flaps 161-164. The bottom flaps 151 to 154 are a front plate connecting bottom flap 153 connected to the bottom of the front plate 11, a rear plate connecting bottom flap 151 connected to the bottom of the rear plate 12, and a right side connected to the bottom of the right side plate 13. A face plate connecting bottom flap 154 and a left side plate connecting bottom flap 152 connected to the bottom of the left side plate 14 . The upper flaps 161 to 164 are a front plate connecting upper flap 163 connected to the upper surface of the front plate 11, a rear plate connecting upper flap 161 connected to the upper side of the rear plate 12, and a right side connecting to the upper side of the right side plate 13. A face plate connecting top flap 164 and a left side plate connecting top flap 162 connected to the upper edge of the left side plate 14 . The packaging container 1 is a rectangular parallelepiped or cubic exterior box formed by assembling these. The top flap does not necessarily have to consist of four sheets. Since it is sufficient to form the upper cover 16, any number of the upper cover 16 may be one or more. If the bottom flap on the side where the convex body forming portion 31 is provided is the right side plate connecting bottom flap 154 or the left side plate connecting bottom flap 152, the bottom flaps do not necessarily need to be composed of four pieces. 30 can be formed and the tip portion 34 can be configured with the minimum number of pieces that can be inserted into the slit portion 41 .

Each component will be described in detail below with reference to the drawings. In addition, in each figure, the dashed lines represent cut lines (perforations) that can be cut.

(Front plate)
The front plate 11 is a plate-like body that holds and fixes the spout 21 through it, as shown in the development view of FIG. 1 and the assembly view of FIG. 2 . The front plate 11 includes a bottom lid 15 (specifically, a front plate connecting bottom flap 153 (also simply referred to as a bottom flap 153)), a right side plate 13, a left side plate 14, and an upper lid 16 (specifically, a top flap). 163), respectively. A connecting portion between the front plate 11 and the bottom flap 153 is provided with a folding line 11a. A connecting portion between the front plate 11 and the right side plate 13 is provided with a folding line 11b. A connecting portion between the front plate 11 and the left side plate 14 is provided with a folding line 11c. A connecting portion between the front plate 11 and the upper flap 163 is provided with a folding line 11d.

As shown in FIGS. 1 and 2, the front plate 11 has perforations 3 (perforations, etc.) for forming a hole for drawing out the spout 21, and a peripheral edge of the hole for drawing. A perforation line (perforation or the like) is provided to enable the formation of a fixing hole 5 for fixing the pouring port 21 . By cutting the cutting line 3 of the front plate 11 as well as the cutting line 3 provided on the other wall surface, the residual piece portion 4 shown in FIG. 2 is formed. The “other wall surface” is either the left side panel 14 or the right side panel 13 . After the packaging container 1 is assembled, the residual piece 4 can be easily folded back at the folding portion 7 provided on the other wall surface, and further, the front plate 11 and the other wall surface (for example, the left side plate 14) can be folded back. Since it can be easily bent with the ridge 8 formed as a fulcrum, the spout 21 can be fixed in the fixing hole 5 formed by removing the excision piece 6 .

(back plate)
The rear plate 12 is a plate-like body arranged at a position facing the front plate 11, as shown in FIG. The rear plate 12 includes a bottom lid 15 (specifically, a rear plate connecting bottom flap 151 (also simply referred to as a bottom flap 151)), a left side plate 14, and a top lid 16 (specifically, a top flap 161). are connected to each other. A connecting portion between the back plate 12 and the bottom flap 151 is provided with a folding line 12a. A folding line 12b is provided at the connecting portion between the rear plate 12 and the left side plate 14. As shown in FIG. A folding line 12 c is provided at the connecting portion between the rear plate 12 and the upper flap 161 . A glue margin piece 121 is further connected to the back plate 12 . A folding line 12 d is provided at the connecting portion between the back plate 12 and the paste strip piece 121 . The paste margin piece 121 is bent along the folding line 12d and adhered to the inner surface of the right side plate 13, thereby integrally fixing the band-shaped body into a tubular shape. Thereby, a cylindrical barrel portion is formed.

(Right side plate)
The right side plate 13 is a plate-like body arranged opposite the left side plate 14, and connects the front plate 11 and the rear plate 12 together with the left side plate 14 to form a belt-like body. The right side plate 13 includes the front plate 11, the bottom lid 15 (specifically, the right side plate connecting bottom flap 154 (also simply referred to as the bottom flap 154)), the top lid 16 (specifically, the top flap 164), are connected to each other. A connecting portion between the right side plate 13 and the front plate 11 is provided with a folding line 11b. A connecting portion between the right side plate 13 and the bottom flap 154 is provided with a folding line 13a. A connecting portion between the right side plate 13 and the upper flap 164 is provided with a folding line 13b. The right side plate 13 may be provided with a cutting line 3 continuing from the front plate 11 for forming the residual piece portion 4 shown in FIGS. 1 and 2 .

(Left side plate)
The left side plate 14 is a plate-like body arranged at a position facing the right side plate 13, and connects the front plate 11 and the rear plate 12 together with the right side plate 13 to form a belt-like body. The left side plate 14 includes a front plate 11, a rear plate 12, a bottom lid 15 (specifically, a left side plate connecting bottom flap 152 (also simply referred to as a bottom flap 152)), and an upper lid 16 (specifically, an upper surface). flaps 162) are connected to each other. A connecting portion between the left side plate 14 and the front plate 11 is provided with a folding line 11c. A connecting portion between the left side plate 14 and the rear plate 12 is provided with a folding line 12b. A connecting portion between the left side plate 14 and the bottom flap 152 is provided with a folding line 14a. A connecting portion between the left side plate 14 and the upper flap 162 is provided with a folding line 14b. The left side plate 14 may be provided with a cutting line 3 continuing from the front plate 11 for forming the residual piece portion 4 shown in FIGS. 1 and 2 .

(Bottom lid)
The bottom lid 15 is a plate-like body formed by overlapping a plurality of bottom flaps 151 to 154 and constitutes the bottom portion of the packaging container 1 . The bottom lid 15 is formed by folding the bottom flaps 151 to 154 on the basis of the folding lines provided at the joints of the bottom flaps 151 to 154 and overlapping them. In the example of FIG. 1, the front plate connecting bottom flap 153, the rear plate connecting bottom flap 151, the right side plate connecting bottom flap 154, and the left side plate connecting bottom flap 152 are folded in this order. The folding order of the front plate connecting bottom flap 153 and the rear plate connecting bottom flap 151 may be reversed. The front plate connecting bottom flap 153 is a bottom flap connected to the front plate 11 and has a folding line 11a at the connecting portion with the front plate 11 . The rear plate connecting bottom flap 151 is a bottom flap connected to the rear plate 12 and has a folding line 12a at the connection portion with the rear plate 12 . The right side plate connecting bottom flap 154 is a bottom flap connected to the right side plate 13 , and the connecting portion with the right side plate 13 is provided with a folding line 13 a. The left side plate connecting bottom flap 152 is a bottom flap connected to the left side plate 14 and has a folding line 14a at the connecting portion with the left side plate 14 .

(top lid)
The upper lid 16 is formed by folding the upper surface flaps 161 to 164 with the folding lines provided at the connecting portions as base lines and overlapping them. When the bag body 2 having a handle (not shown) is packaged, the upper lid 16 may optionally be provided with a handle hole 160 for exposing the handle to the outside of the packaging container 1 .

The back plate connecting top flap 161 is a top flap connected to the back plate 12 , and has a folding line 12 c at the connection with the back plate 12 . The front edge 161a of the rear plate connecting top flap 161 may be retracted so as not to interfere with the formation of the handle hole 160. As shown in FIG. The front plate connecting top flap 163 is a top flap connected to the front plate 11, and has a folding line 11d at the connecting portion with the front plate 11. As shown in FIG. The front plate connecting top flap 163 may also have its leading edge 163a retracted so as not to interfere with the formation of the handle hole 160. As shown in FIG. The left side plate connecting top flap 162 is a top flap connected to the left side plate 14, and the connecting portion with the left side plate 14 is provided with a folding line 14b. A notch portion 162 a that forms a part of the handle hole 160 may be provided in the left side plate connection top flap 162 . The right side plate connecting top flap 164 is a top flap connected to the right side plate 13, and the connecting portion with the right side plate 13 is provided with a folding line 13b. The right side plate connection top flap 164 may be provided with a bent portion 164a forming the handle hole 160 and a cut line 164b (perforation).

(Assembly procedure)
As described above, after the trunk portion is formed by the paste margin piece 121, the bottom lid 15 and the top lid 16 are formed in the following procedure. However, the procedure for forming the bottom lid is an example in which the convex body forming portion 31 is provided on the left side plate connecting bottom flap 152 and the slit portion 41 is provided on the right side plate connecting bottom flap 154. The formation procedure is an example of the case where the handle hole 160 is provided in the right side plate connection top flap 164 .

Regarding the bottom lid 15, (1) the front plate connecting bottom flap 153 is folded inward with the folding line 11a as a base line. (2) Fold the back plate connecting bottom flap 151 inward with the folding line 12a as a base line. The order of (1) and (2) may be reversed. (3) Bend the right side plate connecting bottom flap 154 inward with the folding line 13a as a base line. (4) Using the folding line 14a as a base line, fold the left side plate connecting bottom flap 152 inward. A bottom lid 15 is thus formed, and the bag body 2 is accommodated in the packaging container 1 at this stage. Each bottom flap may be partially or wholly adhered to another bottom flap as long as the functions of the present invention are not hindered.

As for the upper lid 16, (5) the front plate connecting upper flap 163 is bent inward with the folding line 11d as a base line. (6) Using the folding line 12c as a base line, fold the back plate connecting top flap 161 inward. The order of (5) and (6) may be reversed. (7) Using the folding line 14b as a base line, fold the left side plate connecting top flap 162 inward. (7) Using the folding line 13b as a base line, fold the right side plate connecting top flap 164 inward. Thereby, the upper lid 16 is formed. It should be noted that each top flap may be partially or wholly adhered to another top flap within a range that does not interfere with the function of the present invention.

(Packaging container material and size)
As the material of the packaging container 1, it is preferable to use paper products (paper products such as cardboard and paperboard), but the material is not limited to paper products. For example, you may use resin etc. which are easy to process. When a resin is used, it is possible to manufacture the packaging container 1 that takes advantage of the characteristics of the resin. As a result, it is possible to manufacture a plurality of types of packaging containers 1 having different properties and appearances. Also, the size of the packaging container 1 is not particularly limited, but when a liquid detergent or the like used in general households is enclosed in the bag body 2, the length, width, and depth of the packaging container 1 are each about several tens of centimeters. It is preferable to become The shape of the packaging container 1 is not limited to a rectangular parallelepiped, but may be a cube, or may be a polygon with one side and the opposite side having a pentagon or more.

(convex body)
The convex body 30 is formed by a convex body forming portion 31 formed in one of the right side plate connecting bottom flap and the left side plate connecting bottom flap (the left side plate connecting bottom flap 152 in the example of FIG. 1). be. 3 to 5, the convex body forming portion 31 can form a convex body 30 having a ridge line 33 parallel to the bottom side of the back plate 12. As shown in FIGS.

In the example of FIG. 1, the left side plate connection bottom flap 152 provided with the convex body forming part 31 has a valley fold line 32 for valley folding the convex body forming part 31, a cutting line 36 for cutting off other than the valley fold line, A ridge line 33 for mountain folding and a tip portion 34 on the opposite side of the valley folding line 32 are formed at an intermediate position of the separated projection forming portion 31 . On the other hand, the right side plate connection bottom flap 154 where the convex body forming part 31 is not provided is formed with a slit part 41 into which the tip part 34 can be inserted to form the convex body 30 . Reference numerals 30a and 30b denote two surfaces of the convex body 30 which is folded at the ridgeline 33. As shown in FIG.

The tip portion 34 of the projection forming portion 31 is not particularly limited in shape as long as it can be inserted into the slit portion to form the projection 30 . 3 to 5, the distal end portion 34 of the projection forming portion 31 has an insertion portion 35a having a length L2 which is smaller than the length L1 of the slit portion 41 and can be inserted into the slit portion 41, and an engaging portion 35b having a length L3 which is longer than the length L1 of the slit portion 41 and which can be engaged with the slit portion 41. As shown in FIG. It is preferable that the locking portion 35b has a stepped shape in which both ends in the length direction of the distal end portion 34 are notched. By doing so, the locking portion 35b can be locked to both end edges of the slit portion 41. As shown in FIG.

In the bottom flap (the right side plate connecting bottom flap 154 in the example shown in FIG. 1) on the side where the convex body forming part 31 is not provided, the slit part 41 inserts the tip part 35 of the convex body 30 into the entire back-in box. It is provided at a predetermined position that can be tilted. This predetermined position is not particularly limited as long as it allows the entire back-in box to be inclined, but as shown in FIGS. Furthermore, a notch 45 is provided at the end of the right side plate connecting bottom flap 154 on the side of the rear plate 12 . The notch portion 45 is preferably provided because it can be cut off by hooking a fingertip when cutting the projection forming portion 31 along the cutting line 36 . The position where the notch 45 is formed is not particularly limited, but as shown in FIGS. Reference numeral 42 indicates a notch edge of the notch portion 45 having a substantially semicircular shape, and reference numeral 44 indicates an edge of the right side plate connecting bottom flap 154 on the side of the rear plate 12 .

(Procedure for forming convex body)
When the volume of the liquid enclosed in the bag body 2 decreases with use, a sufficient amount of liquid does not come out from the spout 21.例文帳に追加In particular, when the liquid surface of the liquid sealed in the bag body 2 and the spout 21 are at the same height, the liquid does not come out from the spout 21 . In such a case, the user (1) turns the packaging container 1 upside down as shown in FIG. (2) As shown in FIG. 5, the convex body forming portion 31 formed on the left side plate connecting bottom flap 152 is peeled off along the tear line 36 and bent along the valley fold line 32 . (3) As shown in FIG. 3, the convex body 30 is formed by mountain-folding along the ridge line 33 of the convex body forming portion 31 . (4) Insert the tip portion 34 of the projection forming portion 31 into the slit portion 41 of the bottom flap on the side where the projection forming portion 31 is not provided. Thus, the convex body 30 is formed

In this convex body 30, the ridgeline 33, which is the top, is parallel to the folding line 12a and perpendicular to the folding line 14a. Therefore, the entire ridgeline 33 of the convex body 30 can be brought into contact with the mounting surface 19 of the mounting table 50 without the need for the user to adjust the position and direction of the bent portion (see FIG. 6). As a result, the rear portion of the packaging container 1 can be stably held. The angle of the two surfaces 30a and 30b forming the ridgeline 33 is not particularly limited, but may be, for example, 90° or an angle in the vicinity thereof (eg, 60 to 120°).

In addition, in the bottom flap (the left side plate connecting bottom flap 152 in the example of FIG. 1) on the side where such a convex body forming part 31 is provided, the width (length) to the opposite side of the folding line 14a where the bottom flap 152 is folded ) is preferably the same as the width (length) from the folding line 14 a to the outer edge 37 of the projection forming portion 31 . By doing so, the band-shaped remnant of the bottom flap 152 does not remain on the bottom after the protrusion forming portion 31 is cut off. Reference numeral 37a denotes an outer edge other than the portion where the convex body forming portion 31 is formed, and the width (length) to this outer edge 37a is the same as the outer edge 37 described above, as shown in FIGS. length. On the side of the folding line 14a, the belt-like remaining portion of the bottom flap 152 after cutting off the projecting body forming portion 31 along the cutting line 36 is continuous without separating from the folding line 14a, so there is no problem.

The present invention is not limited to the contents described in the above embodiments, but includes other embodiments and usage examples that are conceivable within the scope of matters described in the claims. Also, various modifications and combinations of the above embodiments may be made within the scope of the present invention.

1 packaging container 2 bag body 3 perforation line (perforation)
4 Remaining piece 5 Fixing hole 6 Cut piece 7 Bending 8 Ridge 11 Front plate 11a-11d Folding line 12 Rear plate 12a-12d Folding line 13 Right side plate 13a, 13b Folding line 14 Left side plate 14a, 14b Folding curve 15 bottom lid 16 top lid 21 spout 30 convex body 30a, 30b convex body surface 31 convex body forming part 32 valley fold line 33 ridge line 34 tip part 35 notch part 35a insertion part 35b locking part 36 cutting line 37 convex body Outer edge 37a of the area where the forming part is formed Outer edge of the area where the convex body forming part is not formed 41 Slit part 42 Notch edge 44 End edge 45 Notch part 50 Mounting table 51 Mounting surface L1 Length of the slit part L2 Length of insertion part L3 Length of locking part 121 Paste margin piece 151 Bottom flap (rear plate connecting bottom flap)
152 bottom flap (left side plate connecting bottom flap)
153 bottom flap (front plate connecting bottom flap)
154 bottom flap (right side plate connection bottom flap)
151a Folding line 153a Folding line 160 Handle hole 161 Rear plate connecting upper flap 162 Left side plate connecting upper flap 163 Front plate connecting upper flap 164 Right side plate connecting upper flap 161a Leading edge 162a Notch 163a Leading edge 164a Folded portion 164b Cutting line ( Perforation)

101 packaging container E tip portion I locking piece (bent piece)

Claims (4)

A packaging container for packaging a bag having an outlet for dispensing liquid,
A front plate capable of forming a fixing hole for penetrating and holding the spout, a rear plate arranged at a position facing the front plate, and a band-like structure connecting the front plate and the rear plate. A right side plate and a left side plate forming a body, a front plate connecting bottom flap connected to the bottom of the front plate, a rear plate connecting bottom flap connected to the bottom of the rear plate, and a bottom of the right side plate. a bottom cover formed by folding and overlapping a plurality of bottom flaps, each of which includes a right side plate connecting bottom flap and a left side plate connecting bottom flap connected to the bottom of the left side plate, at respective connecting portions. ,
Either the right side plate connecting bottom flap or the left side plate connecting bottom flap is provided with a convex body forming portion capable of forming a convex body having a ridge line parallel to the bottom side of the back plate. cage,
On the bottom flap on the side where the convex body forming part is provided, there are a valley fold line for valley folding the convex body forming part, a cut line for separating other than the valley fold line, and an intermediate part between the cut off convex body forming part A ridge line that is mountain-folded at a position and a tip on the opposite side of the valley-fold line are formed,
A slit portion is formed in the bottom flap on the side where the convex body forming portion is not provided so that the tip portion can be inserted to form the convex body. is provided,
The distal end portion of the convex-shaped body forming portion includes an insertion portion having a length L2 smaller than the length L1 of the slit portion and capable of being inserted into the slit portion, and an insertion portion having a length L2 that can be inserted into the slit portion, and The locking portion has a length L3 that can be locked, and the locking portion is a portion that is locked to both end edge portions of the slit portion and cuts both ends in the length direction of the tip portion. A packaging container, characterized in that it has a stepped shape. In the bottom flap on the side where the convex body forming portion is provided, the width to the opposite side of the folding line for folding the bottom flap is the same as the width from the folding line to the outer edge of the convex body forming portion. , The packaging container according to claim 1 . The bottom flap on the side where the convex body forming portion is provided is folded along the valley fold line and mountain-folded on the ridge line, and the tip portion is the bottom flap on the side where the convex body forming portion is not provided. 3. The packaging container according to claim 1 or 2, wherein the convex body is formed by being inserted into the slit of the packaging container. The packaging container according to any one of claims 1 to 3 , wherein the bag body is an inner bag that constitutes a bag-in-box, and the packaging container is an outer box that constitutes the bag-in-box.