JP2020029274A - Packaging container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging container capable of fixing a spout provided in a bag-in-box without distorting corrugated cardboard. SOLUTION: The front plate 11 has at least a back plate 12, a right side plate 13, a left side plate 14 and a bottom lid 15, and the front plate 11 has a drawer hole for pulling out a spout and a drawer hole thereof. A fixing hole provided on the peripheral edge for fixing the spout can be formed by cutting with each cutting line 3a, and the cutting line 3a is provided on the front plate 11, the right side plate 13, and the left side. The wall surface selected from the face plate 14 and the bottom lid 15 is also continuously provided, and the wall surface has a bent portion 7 that allows the remaining piece portion 4 after being cut and opened by each cutting line 3a to be folded back. It is a thing. [Selection diagram] Fig. 1

Description

  The present invention relates to a packaging container, and more particularly, to a packaging container capable of fixing a spout provided in a bag-in-box with a fixing hole without distorting cardboard.

  A bag-in-box (also referred to as a bag-in-carton) is a resin inner bag capable of enclosing a liquid such as a liquid beverage, a liquid cosmetic, or a liquid medicine, and having a spout (cock) for pouring the enclosed liquid. And an outer box made of corrugated cardboard that stores the inner bag and holds the outer shape. The outer box is made by assembling a blank board obtained by punching corrugated paper, storing the inner bag in the assembled outer box, filling the contents thereafter, and closing the box, the bag-in-box. Is completed.

  In the conventional back-in-box 100 of the embodiment shown in FIG. 7, the front plate 111 of the outer box has a drawer hole 103 for drawing out a spout attached to the inner bag to the outside of the box, and a drawer hole 103 drawn out of the drawer hole 103. A fixing hole 105 for fixing the spout to the outer box is formed by a cut line (perforation) 113a. When the back-in box 100 into which the liquid is injected is used for the first time, the spout is used after fixing the spout to the outer box. The fixing procedure is as follows. First, the front plate 111 of the assembled outer box is opened along the cutting line 113a to form the drawing hole 103 and the fixing hole 105, and then the spout is moved out of the box from the drawing hole 103. The flange of the drawer and the spout is hooked on the edge of the fixing hole 105 and fixed to the box wall. This is performed by closing the hole 103. Reference numeral 114 denotes a left side plate, and reference numeral 15 denotes a bottom cover. As a related prior art document, for example, Patent Document 1 can be cited.

JP 2007-22596 A

  However, in the conventional back-in-box 100, as shown in FIG. 7, the remaining piece 104 is often of a single-door type, and when the remaining piece 104 is returned to the original position and the draw-out hole 103 is closed. Since the remaining piece 104 interferes with the spout, the work must be performed while distorting the remaining piece 104, and the workability is very poor. In order to improve the workability, it is possible to increase the area of the drawer hole, but in this case, the inner piece is pushed out of the drawer hole by pushing away the remaining piece by the internal pressure of the liquid stored in the inner bag. There is a risk.

  The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a packaging container capable of fixing a spout provided in a bag-in-box without distorting cardboard. .

The packaging container according to the present invention is a packaging container for packaging a bag having a spout for discharging a liquid,
A front plate which is formed by cutting out a drawing hole for drawing out the spout and a fixing hole provided on a peripheral edge of the drawing hole to fix the spout along respective cutting lines; A back plate arranged at a position facing the face plate, a right side plate and a left side plate connecting the front plate and the back plate to form a belt-shaped body, and a bottom lid connected to a bottom of the front plate And at least,
The cut line is provided in addition to the front plate, the right side plate, the left side plate and a wall surface selected from the bottom cover, and the wall surface is cut off at the respective cut line and opened. It has a bent portion that allows the remaining piece to be folded back.

  According to the present invention, the cutout line provided to enable the formation of the drawing hole in the front plate is continuously provided on the wall surface selected from the right side plate, the left side plate, and the bottom cover in addition to the front plate. Since the wall has a bent portion that allows the remaining pieces after being cut and opened at the respective cutting lines to be folded back, after the packaging container is assembled, the remaining pieces after being cut and opened at the cutting lines after the packaging container is assembled. Can be folded back at the bent portion, and can be easily bent with the ridge formed by the front plate and the other wall as a fulcrum. Then, after that, by folding back at the bent portion and returning the remaining piece portion folded at the ridge portion to the original shape and sliding it back to the original position, the fixing hole provided on the periphery of the drawing hole and The spout can be fixed with the remaining piece. As a result, the spout can be fixed with good workability without distorting the cardboard.

  In the packaging container according to the present invention, the fixing hole is provided at a leading end portion of the drawing hole opposite to the bent portion.

  According to the present invention, since the fixing hole is provided at the tip of the drawing hole on the opposite side of the bent portion, it is folded back at the bent portion and the remaining piece bent at the ridge is returned to the original shape. When sliding back to the original position, it can be performed without distorting the cardboard.

  In the packaging container according to the present invention, when the cutout line is provided on the front plate and the right side plate or the left side plate, the fixing hole is a lower end of a drawout hole on the opposite side of the bent portion. Section.

  According to the present invention, since the fixing hole is provided at the tip of the lower edge of the drawing hole on the opposite side of the bent portion, the remaining piece folded back at the bent portion and bent at the ridge is returned to the original shape. When returning to the original position by sliding while returning, it can be performed without distorting the cardboard, and the weight can be received and stably held by the wall surface of the front plate.

  In the packaging container according to the present invention, the fixing hole is provided as a projecting hole on a periphery of the drawing hole, and an opening width of the projecting hole is equal to or substantially equal to a diameter of a mounting portion of the spout. Is the same.

  According to the present invention, since the opening width of the projecting hole is the same as or approximately the same as the diameter of the mounting part of the spout, the mounting part of the spout can be fixed so as to fit into the projecting hole. As a result, the spout can be fixed without play.

  In the packaging container according to the present invention, when the fixing hole is provided at a leading end portion of the drawing hole on the opposite side of the bent portion, the fixing hole side extending from the front plate to face the other wall surface. At least one side edge of the edge is provided with an engagement recess at any position on the front plate.

  According to the present invention, at least one of the side edges of the fixing hole extending from the front plate facing the other wall surface has an engagement recess at any position of the front plate. When returning the residual piece having the same shape as the engagement recess to the original position, the projection can be fitted into the recess to be engaged. As a result, the remaining piece returned to the original position can be fixed without play.

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

  According to the present invention, it is possible to provide a packaging container capable of fixing a spout provided in a bag-in-box without distorting corrugated cardboard.

It is a development view showing an example of the cardboard which constitutes the packaging container concerning the present invention. It is a schematic diagram which shows the example of the hole for extraction and the fixing hole provided in the periphery of the hole for extraction. FIG. 2 is an external perspective view of the corrugated cardboard shown in FIG. 1 as a packaging container, in which (A) shows a form in which a cutout portion is cut out from the assembled packaging container to form a fixing hole; Is a form of a drawing hole after cutting off at each cutting line and opening the remaining piece. FIG. 4B is an explanatory view showing an operation mode in which the residual piece portion after opening in FIG. 3B is slid back to the original position, and fitted into the mounting portion of the spout. It is explanatory drawing which shows the aspect with which the engagement recessed part provided in the front plate and the convex part provided in the remaining piece part engage. It is a schematic diagram which shows the example of the hole for a drawer, and the fixing hole provided in the periphery of the hole for a drawer, (A) is an example which provided the hole for a drawer in the front plate and the left side plate, (B) Is an example in which a drawing hole is provided between the front plate and the bottom cover. It is explanatory drawing which shows the example of the conventional packaging container.

  A packaging container according to the present invention will be described with reference to the drawings. It should be noted that the present invention is not limited to the contents described in the following embodiments, but includes other embodiments and usage examples that can be considered within the scope of the matters described in the claims. Various changes and combinations of the above embodiments may be made without departing from the scope of the present invention.

[Basic configuration of packaging container]
The packaging container 1 according to the present invention is used for packaging a bag body 2 having a spout 21 for discharging a liquid such as a sealed liquid beverage, a liquid cosmetic, or a liquid medicine. The basic configuration has at least a front plate 11, a rear plate 12, a right side plate 13, a left side plate 14, and a bottom cover 15, as shown in FIGS. More specifically, a front plate 11, a rear plate 12 disposed at a position facing the front plate 11, a right side plate 13 and a left side plate 14 for connecting the front plate 11 and the rear plate 12 to form a belt-shaped body. And at least a bottom lid 15 formed by folding and overlapping a plurality of bottom flaps 151 to 154 at respective connection portions.

  The features of the present invention are as follows: (1) The front plate 11 has a drawing hole 3 for drawing out the spout 21, and a fixing hole 5 provided on the periphery of the drawing hole 3 for fixing the spout 21. And (2) the cut line 3a is formed by the right side plate 13, the left side plate 14, and the bottom cover 15 (front plate connection) in addition to the front plate 11. It is also provided continuously on the wall surface selected from the bottom flap 153), and the wall surface has a bent portion 7 that allows the remaining piece portion 4 after being cut and opened by each cut line 3a to be folded. is there.

  In the packaging container 1, a cutout line 3a provided to enable the drawing hole 3 to be formed in the front plate 11 has a right side plate 13, a left side plate 14, and a bottom cover 15 (front plate connection) in addition to the front plate 11. It is provided continuously on the wall surface selected from the bottom flap 153), and the wall surface has the bent portion 7 that allows the remaining piece portion 4 to be folded back after being cut and opened by the respective cut line 3a. After the assembly 1 is assembled, the remaining piece portion 4 after being cut and opened at each cutting line 3a can be folded back at the bent portion 7 and the front plate 11 and other wall surfaces (13, 14, 153) ) Can be easily bent with the ridge 8 formed as a fulcrum. After that, the remaining piece portion 4 folded back at the bent portion 7 and bent at the ridge portion 8 is slid while returning to the original shape and returned to the original position, thereby being provided on the peripheral edge of the drawing hole 3. The spout 21 can be fixed by the fixing hole 5. As a result, the spout 21 can be fixed with good workability without distorting the cardboard.

  Note that “at least” means that the upper lid 16 is formed by overlapping the upper flaps 161 to 164. The upper surface 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 an upper side of the rear plate 12, and a right side connected to an upper side of the right side plate 13. The left side plate connecting upper surface flap 162 connected to the upper side of the left side plate 14 and the upper surface flap 164 of the side plate. Since the upper surface flap only needs to be able to form the upper lid 16, the upper surface flap does not necessarily need to be composed of four sheets, but may be composed of one or more arbitrary numbers.

  In addition, the bottom lid 15 is composed of bottom flaps 151 to 154, the bottom flaps 151 to 154 are a front plate connection bottom flap 153 connected to the bottom of the front plate 11, and the back plate connected to the bottom of the back plate 12. A connection bottom flap 151, a right side plate connection bottom flap 154 connected to the bottom of the right side plate 13, and a left side plate connection bottom flap 152 connected to the bottom of the left side plate 14. The bottom flaps need not necessarily be composed of four sheets, and the cutout line 3a for forming the drawing hole 3 may be composed of the minimum number of sheets that can be formed by the front plate 11 and the front plate connection bottom flap 153. Can be.

  The packaging container 1 is a rectangular parallelepiped or cubic outer box formed by assembling the one illustrated in FIG. 1 in an assembling procedure example described later. The “right” and “left” of the right side plate 13 and the left side plate 14 are represented as left and right positions when the assembled packaging container 1 shown in FIGS. 3 to 6 is viewed from the front plate 11 side. Therefore, in the state before assembly in FIG. 1, the right side of the front plate 11 is the left side plate 14 and the left side is the right side plate 13. In the illustrated example, the spout 21 is fixed by the drawer hole 3 and the fixing hole 5 provided in the front plate 11 in front of the outer box, but the spout 21 is always provided in the front plate 11. It is not necessary to have the same shape as a whole, and if it is the same form, it is fixed by the draw-out hole and the fixing hole provided on the top surface (the surface of the upper lid 16) of the outer box. Is also good.

  Hereinafter, each component will be described in detail with reference to the drawings.

(Front plate)
The front plate 11 is a plate-like body that is held through and fixed to the spout 21 as shown in the development view of FIG. 1 and the assembly view of FIG. The front plate 11 includes a bottom cover 15 (specifically, a front plate connection bottom flap 153 (also simply referred to as a bottom flap 153)), a right side plate 13, a left side plate 14, and a top cover 16 (specifically, a top flap). 163). The joint between the front plate 11 and the bottom flap 153 is provided with a folding curve 11a. A bent portion 11b is provided at a connecting portion between the front plate 11 and the right side plate 13. A fold curve 11c is provided at a connection portion between the front plate 11 and the left side plate 14. A connecting portion between the front plate 11 and the upper surface flap 163 is provided with a folding curve 11d.

  As shown in FIGS. 1 and 2, the front plate 11 has a cutout line 3 a (a perforated line or the like) which can be formed by cutting out a drawing hole 3 for drawing out the spout 21. A cutting line 5a (perforation or the like) which is provided on the periphery and which can be formed by cutting out a fixing hole 5 for fixing the spout 21 is provided. By cutting out the cut-out line 3a of the front plate 11 and the cut-out line 3a provided on the other wall surface as well, the residual piece portion 4 shown in FIG. 3B is formed. After the packaging container 1 is assembled, as shown in FIG. 3 (B), the remaining piece portion 4 can be easily folded back at a bent portion 7 provided on another wall surface.

  Further, after the packaging container 1 is assembled, the residual piece portion 4 has a ridge portion 8 composed of a front plate 11 and other wall surfaces (13, 14, 153) as shown in FIG. It can be easily bent as a fulcrum. Thereafter, as shown in FIG. 4 (B), the remaining piece portion 4 folded back at the bent portion 7 and bent at the ridge portion 8 is slid while returning to the original shape, thereby returning to the original position. As shown in C), the spout 21 can be fixed by the fixing holes 5 provided on the periphery of the drawing hole 3. In this series of operations, the spout 21 can be fixed with good workability without distorting the cardboard.

  When the user pulls out the spout 21 from the inside of the packaging container 1 to use it, the user performs an operation according to the following procedure. That is, (1) a circular portion defined by a cut line 5a formed by a normal perforation is strongly pressed with a finger or the like to cut it. Thereby, the fixing hole 5 is formed on the front plate 11. (2) The remaining piece portion 4 is folded back toward the near side with the bent portion 7 as a base line while cutting out the cut line 3a formed of a normal perforation in the form of the remaining piece portion 4. Thereby, as shown in FIG. 4 (A), the extraction hole 3 for extracting the spout 21 to the outside is formed by the front plate 11 and other wall surfaces. (3) The spout 21 is pulled out from the packaging container 1 and, as shown in FIG. 4B, a mounting portion (not shown) formed of a circular groove provided at the base of the spout 21. An inner edge (also referred to as an inner surface edge) of the fixing hole 5 provided on a peripheral edge of the drawing hole 3 is fitted. (4) The spout 21 fitted in the fixing hole 5 is slid by returning the folded-back residual piece portion 4 to the original position while returning it to the original shape, thereby setting the spout 21 fitted in the fixing hole 5 in FIG. As described above, the fixing hole 5 is held and fixed by the semicircular or substantially semicircular concave edge 4b at the tip end of the remaining piece 4 as shown in FIG. Thus, the spout 21 can be fixed to the packaging container 1 with good workability without distorting the assembled cardboard.

(Back plate)
The back plate 12 is a plate-like body arranged at a position facing the front plate 11 as shown in FIG. The back plate 12 includes a bottom cover 15 (specifically, a back plate connection bottom flap 151 (also simply referred to as a bottom flap 151)), a left side plate 14, and a top cover 16 (specifically, a top flap 161). Each is connected. A fold curve 12a is provided at a connection portion between the back plate 12 and the bottom flap 151. A fold curve 12b is provided at a connection portion between the back plate 12 and the left side plate 14. A fold curve 12c is provided at a connection portion between the back plate 12 and the top flap 161. A glue margin piece 121 is further connected to the back plate 12. A fold curve 12d is provided at a connection portion between the back plate 12 and the adhesive margin piece 121. The glue allowance piece 121 is bent with the folding curve 12 d as a base line, and is adhered to the inner surface of the right side plate 13 to integrally fix the belt-shaped body to a cylindrical shape. Thus, a cylindrical body is formed.

(Right side plate)
The right side plate 13 is a plate-shaped body disposed at a position facing the left side plate 14, and connects the front plate 11 and the back plate 12 together with the left side plate 14 to form a belt-shaped body. The right side plate 13 includes a front plate 11, a bottom cover 15 (specifically, a right side plate connecting bottom flap 154 (also simply referred to as a bottom flap 154)), an upper cover 16 (specifically, a top flap 164), Are connected to each other. A bent portion 11b is provided at a connection portion between the right side plate 13 and the front plate 11. A fold curve 13 a is provided at a connection portion between the right side plate 13 and the bottom flap 154. A bent portion 13b is provided at a connection portion between the right side plate 13 and the upper surface flap 164.

  In the present invention, the cut line 3a is continuously provided on the wall surface selected from the right side plate 13, the left side plate 14, and the bottom cover 15 (specifically, the front plate connecting bottom flap 153) in addition to the front plate 11. The wall surface has a bent portion 7 that allows the remaining piece portion 4 after being cut and opened at each cut line 3a to be turned back. Accordingly, when the cutout line 3a is provided on the right side plate 13 (not shown), the front plate 11 and the right side plate 13 form the residual piece portion 4, and the above-described functions and effects of the present invention are achieved.

(Left side plate)
The left side plate 14 is a plate-shaped body disposed at a position facing the right side plate 13, and connects the front plate 11 and the back plate 12 together with the right side plate 13 to form a belt-shaped body. The left side plate 14 includes a front plate 11, a rear plate 12, a bottom cover 15 (specifically, a left side plate connection bottom flap 152 (also simply referred to as a bottom flap 152)), and a top cover 16 (specifically, top surface. Flaps 162). The joint between the left side plate 14 and the front plate 11 is provided with a folding curve 11c. A bent portion 12b is provided at a connection portion between the left side plate 14 and the rear plate 12. A fold curve 14a is provided at a connection portion between the left side plate 14 and the bottom flap 152. A fold curve 14b is provided at a connection portion between the left side plate 14 and the upper surface flap 162.

  As in the description of the right side plate 13, in the present invention, the cutout line 3 a is selected from the right side plate 13, the left side plate 14, and the bottom lid 15 (specifically, the front plate connecting bottom flap 153) in addition to the front plate 11. It is also provided continuously on the wall surface, and the wall surface has a bent portion 7 that allows the remaining piece portion 4 after being cut and opened at each cut line 3a to be turned back. Therefore, as shown in FIGS. 1 and 2, when the cutout line 3 a is provided on the left side plate 14, the remaining piece 4 is formed by the front plate 11 and the left side plate 14, and as shown in FIG. The function and effect of the present invention will be achieved.

(Bottom lid)
The bottom cover 15 is a plate-like body formed by overlapping a plurality of bottom flaps 151 to 154, and forms a bottom surface of the packaging container 1. The bottom cover 15 has a front plate connecting bottom flap 153, a right side plate connecting bottom flap 154, a left side plate connecting bottom flap 152, and a rear plate connecting, using the folding curves provided at the connecting portions with the bottom flaps 151 to 154 as base lines. It is formed by folding and overlapping the bottom flaps 151 in this order. The order in which the front plate connecting bottom flap 153 and the right side plate connecting bottom flap 154 are bent is not limited to the above order, and may be reversed. The front plate connecting bottom flap 153 is a bottom flap connected to the front plate 11, and a bent portion 11 a is provided at a connection portion with the front plate 11. The back plate connecting bottom flap 151 is a bottom flap connected to the back plate 12, and has a fold curve 12 a at a connection portion with the back plate 12. The right side plate connecting bottom flap 154 is a bottom flap connected to the right side plate 13, and a bent portion 13 a is provided at a connection portion with the right side plate 13. The left side plate connecting bottom flap 152 is a bottom flap connected to the left side plate 14, and a joint with the left side plate 14 is provided with a bent curve 14 a.

  As in the description of the right side plate 13, in the present invention, the cutout line 3 a is selected from the right side plate 13, the left side plate 14, and the bottom lid 15 (specifically, the front plate connecting bottom flap 153) in addition to the front plate 11. It is also provided continuously on the wall surface, and the wall surface has a bent portion 7 that allows the remaining piece portion 4 after being cut and opened by each cut line 3a to be folded. Therefore, as shown in FIG. 6B, when the cutout line 3a is provided on the bottom cover 15 (specifically, the front plate connecting bottom flap 153), the front plate 11 and the bottom cover 15 (specifically, the front plate The remaining piece portion 4 is formed with the connecting bottom flap 153), and the function and effect of the present invention described above can be achieved.

(Top lid)
The upper lid 16 is an upper lid formed by folding the upper surface flaps 161 to 164 on the basis of the fold curves provided at the respective connection portions as base lines. When the bag 2 provided with a handle (not shown) is packaged, the upper lid 16 may optionally have a handle hole 160 for exposing the handle to the outside of the packaging container 1.

  The rear plate connecting upper surface flap 161 is an upper surface flap connected to the rear plate 12, and has a fold curve 12 c at a connection portion with the rear plate 12. The rear plate connecting upper surface flap 161 may be provided with a notch 161 a forming a part of the handle hole 160. The front plate connecting upper surface flap 163 is an upper surface flap connected to the front plate 11, and has a fold curve 11 d at a connection portion with the front plate 11. The front plate connecting upper surface flap 163 may be provided with a notch 163 a that forms a part of the handle hole 160. The left side plate connecting upper surface flap 162 is an upper surface flap connected to the left side plate 14, and has a fold curve 14 b at a connection portion with the left side plate 14. The left side plate connecting upper surface flap 162 may be provided with a notch 162a that forms a part of the handle hole 160. Further, the right side plate connecting upper surface flap 164 is an upper surface flap connected to the right side plate 13, and a joint with the right side plate 13 is provided with a folding curve 13 b. The right side plate connecting upper surface flap 164 may be provided with a slit 164a for forming a notch forming a part of the handle hole 160 and a folding curve 164b.

(Assembly procedure)
As described above, after the trunk portion is formed by the adhesive margin piece 121, the bottom cover 15 and the upper cover 16 are formed in the following procedure. However, the procedure for assembling the packaging container 1 is not particularly limited, and the following procedure is a preferred example. That is, (1) the front plate connecting bottom flap 153 is bent inward with the folding curve 11a as a base line. (2) The right side plate connecting bottom flap 154 is bent inward with the folding curve 13a as a base line. (3) With the folding curve 14a as a base line, the left side plate connecting bottom flap 152 is bent inward and partially adhered to the right side plate connecting bottom flap 154. (4) Using the folding curve 12a as a base line, the rear plate connecting bottom flap 151 is bent inward and partially adhered to the left side plate connecting bottom flap 152. Thereby, the bottom cover 15 is formed, and the bag 2 is stored in the packaging container 1 at this stage. (5) The front plate connecting upper surface flap 163 is bent inward with the folding curve 11d as a base line. (6) The back plate connecting upper surface flap 161 is bent inward with the folding curve 12c as a base line. (7) The right side plate connecting upper surface flap 164 is bent inward with the folding curve 13b as a base line. (8) The left side plate connecting upper surface flap 162 is bent inward with the folding curve 14b as a base line, and partially bonded to the right side plate connecting upper surface flap 164. Thereby, the upper lid 16 is formed. The order of (5) and (6) may be reversed, and the order of (7) and (8) may be reversed.

(Material and size of packaging container)
As a material of the packaging container 1, it is preferable to use a paper product (a paper product such as a cardboard or a paperboard), but it is not limited to the paper product. For example, a resin or the like that is easy to process may be used. When a resin is used, the packaging container 1 utilizing the characteristics of the resin can be manufactured. As a result, a plurality of types of packaging containers 1 having different properties and appearances can be manufactured. The size of the packaging container 1 is not particularly limited. However, when potable water or the like used in ordinary households is sealed in the bag body 2, the length of the packaging container 1 is about several tens of centimeters. Is preferred. The shape of the packaging container 1 is not limited to a rectangular parallelepiped, but may be a cube, or one surface and its opposing surface may be polygons of pentagon or more.

(Drawer hole, fixing hole)
The drawing hole 3 has already been described. As shown in FIGS. 1 to 6, as shown in FIGS. 1 to 6, the drawing hole 3 has a bent portion 7 on one side and a cutout line (perforation) 3 a on the other three sides. This hole is formed when the remaining piece 4 is folded back at the bent portion 7. Since the spout 21 is fixed by the fixing hole 5 in the mode shown in FIG. 4, the residual piece portion 4 is usually a quadrangle, but a somewhat deformed quadrangle (called a substantially quadrangle) as long as its function is not hindered. There may be. Note that the concave edge 4b provided at the tip of the residual piece portion 4 (the end opposite to the bent portion 7) is used when the spout 21 is fitted into the fixing hole 5. The spout 21 works together with the fixing holes 5.

  The fixing hole 5 has already been described. However, as shown in FIGS. 1 to 6, the fixing hole 5 is provided at the tip of the drawing hole on the opposite side of the bent portion 7. By doing so, when the remaining piece portion 4 folded back at the bent portion 7 and bent at the ridge portion 8 is returned to the original position by sliding while returning to the original shape, it can be performed without distorting the cardboard.

  When the cutout line 3a is provided on the front plate 11 and the right side plate 13 or the left side plate 14, the fixing holes 5 are formed in the bent portions 7 as shown in FIGS. 1 to 5 and 6A. It is provided at the end of the lower edge of the drawing hole on the opposite side. For example, as shown in FIG. 3, when the fixing hole 5 is provided such that the fixing hole 5 protrudes from the cutout line 3 a of the drawing hole distal end on the opposite side of the bent portion 7, It refers to a corner portion which is the tip position of the cut line 3a at the lower edge of the drawing hole extending from the bent portion 7. By doing so, it is possible to return the original piece to the original shape by sliding the residual piece portion 4 folded back at the bent portion 7 and bent at the ridge portion 8 to the original position without distorting the cardboard, and In addition, the weight of the spout 21 can be received on the wall surface of the front plate 11 at the tip of the lower edge of the drawing hole, and can be stably held.

  On the other hand, when the cut line 3a is provided on the front plate 11 and the bottom lid 15 (specifically, the front plate connecting bottom flap 153), the fixing hole 5 is folded as shown in FIG. It is provided at the center of the upper edge of the drawing hole on the opposite side of the curved portion 7. By doing so, it is possible to return the original piece to the original shape by sliding the residual piece portion 4 folded back at the bent portion 7 and bent at the ridge portion 8 to the original position without distorting the cardboard, and The weight of the spout 21 can be received at the center of the upper edge of the drawing hole at the center of the remaining piece 4 of the front plate 11 and can be stably held.

  The fixing hole 5 is provided as a protruding hole on the periphery of the drawing hole 3, and the opening width W of the protruding hole is, as shown in FIG. 2, the diameter of a mounting portion (not shown) of the spout 21. It is preferably the same or substantially the same. By doing so, the mounting portion of the spout 21 can be fixed so as to fit into the projecting hole, and as a result, the spout 21 can be fixed without play.

  When the fixing hole 5 is provided at the tip end of the drawing hole on the opposite side of the bent portion 7, the fixing hole side edge (upper edge or lower edge) extending from the front plate 11 to another wall surface. At least one side edge may be provided with an engagement recess 9 at any position of the front plate 11. By doing so, when returning the residual piece portion 4 having the convex portion 4a having the same shape as the engaging concave portion 9 to the original position, the convex portion 4a can be fitted into the engaging concave portion 9 to be engaged. As a result, it is possible to prevent the residual piece portion 4 returned to the original position shown in FIG. 4C from returning to the position before the slide shown in FIG. It can be fixed without sticking. It is desirable that such an engagement concave portion 9 is provided on a side edge orthogonal to the direction in which it returns to the position before sliding in order to eliminate return, and it may be provided on the upper edge shown in FIG. It may be provided on the lower edge similar to the fixing hole 5.

  As described above, in the packaging container 1 according to the present invention, the remaining piece 4 after being cut and opened by the perforated line 3a can be folded back at the bent portion 7 and the front plate 11 and other wall surfaces ( 13, 14, 153) can be easily bent using the ridge 8 as a fulcrum, and the corrugated cardboard is distorted by sliding the remaining piece 4 back to the original shape and returning it to the original position. Can be done without.

DESCRIPTION OF SYMBOLS 1 Packaging container 2 Bag body 3 Pull-out hole 3a Cut line (perforation)
4 Remaining piece part 4a Convex part 4b Concave edge 5 Fixing hole 5a Cut line (perforation)
Reference Signs List 6 cut piece portion 7 bent portion 8 ridge 9 engagement concave portion 11 front plate 11a to 11d bent curve 12 back plate 12a bent curve (first bent curve)
12b Folded curve 12c Folded curve 12d Folded curve 13 Right side plate 13a, 13b Folded curve 14 Left side plate 14a, 14b Folded curve 15 Bottom lid 16 Top lid 21 Spout 121 Glue margin 151 Bottom flap (back panel connection bottom flap)
152 Bottom flap (left side plate connecting bottom flap)
153 Bottom flap (Front plate connection bottom flap)
154 bottom flap (right side plate connecting bottom flap)
151a Folded curve (2nd folded curve)
152a Fold curve (third curve)
153a Fold curve (3rd curve)
160 Handle hole 161 Back plate connecting top flap 162 Left side plate connecting top flap 163 Front plate connecting top flap 164 Right side plate connecting top flap 161a Notch 162a Notch 163a Notch 164a Slit 164b Folding curve

100 Conventional packaging containers (back-in-box)
103 Pull-out hole 104 Residual piece 105 Fixing hole 111 Front plate 113a Cut line (perforation)
114 Left side plate 115 Bottom cover

Claims (6)

A packaging container for packaging a bag having a spout for discharging a liquid,
A front plate which is formed by cutting out a drawing hole for drawing out the spout and a fixing hole provided on a peripheral edge of the drawing hole to fix the spout along respective cutting lines; A back plate arranged at a position facing the face plate, a right side plate and a left side plate connecting the front plate and the back plate to form a belt-shaped body, and a bottom lid connected to a bottom of the front plate And at least,
The cut line is provided in addition to the front plate, the right side plate, the left side plate and a wall surface selected from the bottom cover, and the wall surface is cut off at the respective cut line and opened. A packaging container having a bent portion capable of folding the remaining piece portion.   The packaging container according to claim 1, wherein the fixing hole is provided at a tip end of the drawing hole opposite to the bent portion.   When the cut line is provided in the front plate and the right side plate or the left side plate, the fixing hole is provided at a leading edge lower end portion of the drawing hole opposite to the bent portion. Item 3. The packaging container according to Item 1 or 2.   The said fixing hole is provided as a protruding hole in the periphery of the said drawing hole, The opening width of this protruding hole is the same as the diameter of the mounting part which the said spout has, or substantially the same. 4. The packaging container according to any one of 3.   When the fixing hole is provided at a tip end of the drawing hole on the opposite side of the bent portion, at least one of the fixing hole side edges extending from the front plate so as to face the other wall surface. The packaging container according to any one of claims 1 to 4, wherein an engagement recess is provided at any position of the front plate. The packaging container according to any one of claims 1 to 5, wherein the bag body is an inner bag constituting a bag-in-box, and the packaging container is an outer box constituting the bag-in-box.