JP3127060B2 - Box type container with inner bag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box-shaped container with an inner bag, in which a bag for storing a liquid, a powder or the like is preserved and protected in a box. .

[0002]

2. Description of the Related Art Heretofore, as this type of box-shaped container with an inner bag (bag-in-carton), a container composed of a paperboard box and an inner bag made of a plastic film is generally used. Among such box-shaped containers with an inner bag, for example, for a liquid, after attaching a cylindrical inner bag to a blank plate at a predetermined position, assembling into a rectangular tube shape, drilling a hole and attaching a spout. After that, the upper and lower edges of the inner bag are sealed and hermetically sealed, and the upper and lower sides of the box are folded and hot melt boxed to assemble. And the bottom is folded flat, but in order to make it easier to pour the contents liquid, the top surface is left with a part of the inclined surface formed by folding, and the spout is located on this inclined surface. Is widely used.

[0003]

As described above, a conventional box-shaped container with an inner bag is difficult to disassemble because it is firmly made of a hot-melt box with the inner bag incorporated therein. It is very difficult to separate the body and the inner bag, and it is practically impossible for the consumer to disassemble and separate the two after using the content liquid. However, recently, it is desired to separate burnable and non-burnable refuse from the viewpoint of environmental problems. However, in the conventional box-shaped container with an inner bag as described above, a paper box and a plastic box are used. There is a problem that bags cannot be sorted.

[0004] The present invention has been made in view of the above problems, and an object thereof is to provide a box-shaped container with an inner bag which can easily separate the box from the inner bag. Is to do.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a hot-melt box assembly which has a flat bottom surface and a part of a top surface left. A box made of paperboard having a fold-formed inclined surface at the upper part of the front side plate, and a plastic film built in the box so that the content liquid is poured out from a spout attached to the inclined surface. In a box-shaped container with an inner bag, which is formed with an inner bag, a perforated line is formed on a rear side plate opposite to the inclined surface of the box body by connecting both upper ends thereof to a downward perforation line, and a fold and a top surface and a right side plate are folded. A ruled line to be a fold of the surface and the left side plate is formed by a perforated ruled line, and a zipper portion is provided on the bottom surface of the box body so as to avoid a glue bonding portion.

It is preferable to make a half cut in the glue bonding portion forming the bottom.

[0007]

In the box-shaped container with an inner bag having the above structure, the upper side of the rear side plate is broken by pressing the portion of the rear side plate defined by the perforation line with a finger, and the top surface is raised on both sides. It is broken at the perforation ruled line and the folded state of the inclined surface is released. Further, the bottom portion is released by peeling off the zipper portion on the bottom surface. That is, the upper perforation line, the perforation ruled line, and the zipper portion on the bottom serve to release the top and bottom of the box, respectively. Then, the upper and lower opened boxes are disassembled, and the inner bag is separated from the box by separating the inner bag from the box.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a perspective view showing a box-shaped container with an inner bag according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the rear side of the container as viewed obliquely from below.

As shown in these figures, a box-shaped container 1 with an inner bag has an inner bag 3 made of a plastic film inside a box body 2 made of paperboard as shown by a dashed line. The body 2 has an inclined surface 2b with a top surface 2a partially left at the top.
The spout 5 is attached to a hole 4 provided on the inclined surface 2b. Spout 5 shown
Is a screw type cap 5a formed by injection molding of plastic.
And a spout body 5b into which the cap 5a is screwed. The spout body 5b has its front side flange (not shown) welded to the inner surface of the inner bag around the hole formed in the inner bag 3. It is in a state.

A rear perforated line 6 is formed on the rear plate 2d, which is opposite to the front plate 2c having the inclined surface 2a of the box body 2 and which is opposite to the front plate 2c.
A and creases of the right side plate 2d and creases of the top surface 2a and the left side plate 2f are formed by perforation rule lines 7 and 8, respectively. Further, a zipper portion 9 is provided on the bottom surface 2 g of the box 2.
Is provided.

The box 2 is formed by assembling a blank plate whose development view (front side) is shown in FIG. The blank plate B is formed by punching a raw material having a print or the like on the front side into the shape shown in the figure. As shown in FIG.
The wide left side plate 11 and the narrow front side plate 1 through b, c, d
2. A wide right side plate 13, a narrow width rear side plate 14, and an adhesive flap 15 are continuously provided in the lateral direction, and an inner lid plate is provided above each of the side plates 11 to 14 via horizontal ruled lines e, f, g, h. 16, a bent plate 17, an outer lid plate 18, and a bent plate 19 are continuously provided, and the inner bottom plate 20, the bent plate 21, and the bottom plate 11 are disposed below the side plates 11 to 14 via horizontal ruled lines i, j, k, and l. The outer bottom plate 22 and the bent plate 23 are formed in a continuous configuration. Among the upper horizontal ruled lines, the ruled line e at the boundary between the left side plate 11 and the inner lid plate 16 and the ruled line g at the boundary between the right side plate 13 and the outer lid plate 18 are formed by perforated ruled lines. Also, the rear side plate 14
Has a perforated line 1 that is curved downward by connecting both sides of the upper end.
4a are formed.

An inclined region 24 is defined above the front side plate 12 by a ruled line m, and an isosceles triangular folded region 25 is formed in the left side plate 11 and the right side plate 13 adjacent to both sides of the inclined region 24. , 26 are defined by oblique rule lines n, o starting from both ends of rule line m. In the folding regions 25 and 26, punched holes 25a, 25b and 26 are formed on oblique ruled lines p and q extending from both ends of the ruled line m toward the center.
a, 26b are formed, and the upper punched holes 25a, 2b are formed.
6a is a round hole in which two arcs are connected, and a lower punched hole 2 is formed.
5b and 26b are folding regions 25 and 26 from both ends of the ruled line m.
Are formed in a square shape so as to cut out a part thereof. The inner bottom plate 20 is formed with cutouts 20a on both left and right sides and arc-shaped cutouts 20b on the tip edges. Half cuts 21a and 23a are formed on the front sides of the bent plates 21 and 23 corresponding to the cuts 20. Are provided. Further, the outer bottom plate 22 is provided with a band-shaped zipper portion 22a at a position slightly closer to the right side plate 13 by perforation.
On the front side of the inner lid plate 16 and the inner bottom plate 20 located above and below the left side plate 11, half cut perforations 16a and 20c for improving adhesion are formed over a wide area near the left side plate 11. .

Next, a procedure for incorporating the inner bag 3 in the blank plate B will be described. First, the emulsion adhesive F is applied to a plurality of positions on the inner surface of the blank plate B indicated by oblique lines in FIG.
The blank plate B is folded flat along the vertical ruled lines a and c so as to sandwich the cylindrical inner bag 3 made of a plastic film whose back is sealed in advance, and the inner bag 3 is attached to the inner surface of the blank plate B with the adhesive F. The outer surface of the bonding flap 15 is bonded to the inner surface of the end portion of the left side plate 11 with a hot melt adhesive. In this case, both open ends of the tubular inner bag 3 are projected from above and below the blank plate B. Then
The blank plate B is raised in the shape of a rectangular tube, and a hole (a position indicated by a dotted line in the drawing) for attaching a spout is formed in the inclined region 24 of the front side plate 12. In this case, a hole is simultaneously formed in the inner bag 3 stuck along the inner surface of the box 2. Subsequently, the spout body 5b is inserted into the hole from the inside of the inner bag 3 toward the outside of the box, and the front side of the base flange is attached around the hole formed in the inner bag 3 by ultrasonic welding. Then, the lower end and the upper end of the inner bag 3 are sequentially heat-sealed and closed, and an air leak of the inner bag 3 is checked in this state. Finally, the bottom part and the top part of the box 2 are assembled, closed with a hot-melt adhesive, and box-formed.

The bottom of the box 2 is first assembled by bending the plate 2
1 and 23 are folded inward at ruled lines j and l, and the inner lid plate 2 is
0 is folded in this order by the ruled line i, and the outer lid plate 22 is folded in this order by the ruled line k, and the outer surface of the inner lid plate 20 and the inner surface of the outer lid plate 22 are hot-melt bonded linearly or at several places outside the zipper portion 22a, The region surrounded by the half cuts 21a and 23a of the bent plates 21 and 23 is bonded by hot melt at a position corresponding to the outer lid 22.

The assembling of the top portion is performed by folding the fold area 25 of the left side plate 11 and the fold area 26 of the right side plate 13 along the oblique ruled lines p and q at the center.
Is inclined, the bent plate 17 is horizontally bent at the ruled line f, and the bent plate 19 is folded inward at the ruled line h to cover the bent plate 17, and then the inner lid plate 16 is cut from the left and right at the perforated ruled line e.
The outer lid plate 18 is folded in this order along the perforated ruled line g, and these are bonded to each other by hot melt. Here, the lower punched holes 25 in the folding regions 25 and 26 are provided.
The b and 26b serve to facilitate the folding operation of the folding regions 25 and 26, and the upper punched holes 25a and 26a serve to prevent the folding regions 25 and 26 from hindering the spout body 5b.

The box-shaped container 1 with an inner bag formed as described above is, as shown in FIGS.
4) along the curved perforation line 6 (14a), the fold of the top surface 2a and the right side plate 2e (13) and the fold line of the top surface 2a and the left side plate 2f (11). ) And perforated line 8 (e),
A zipper portion 9 (22a) is provided on the bottom surface avoiding the adhesive bonding portion.

The used box-shaped container 1 with an inner bag is pressed with a finger or the like so as to make a cut in the perforation line 6 to break the upper portion of the rear side plate 2 d, and then lifted to lift the top surface 2.
a By breaking the perforated ruled lines 7 and 8 on both sides, the folded state of the inclined surface 2b is released and the upper part is released. On the other hand, the zipper part 9 is peeled off and the outer lid plate 2 is removed.
2 is cut off, a finger is inserted into the notch 20b of the inner lid plate 20 and pulled up, so that the area surrounded by the half cuts 21a and 23a of the bent plates 21 and 23 adhered to the inner surface of the outer lid plate 20. Is delaminated and peeled off, so that the bottom is released. When the upper and lower sides of the box 2 are released as described above, the box 2 can be easily disassembled thereafter, and the box 2 is not finely dispersed as in the case where the box 2 is forcibly disassembled. Then, by disassembling the box 2 and peeling off the inner bag 3 from the box 2, both can be completely separated.

In the above embodiment, the perforated line 6 is connected to the upper end of the rear side plate 2d and curved downward in an arc shape.
However, it goes without saying that the perforation line 6 is not limited to this shape. That is, it suffices only to define a portion that is connected to the perforated ruled lines 7 and 8 on both sides of the top surface 2a and that can be pressed by a finger on the upper portion of the rear plate 2d. Top surface 2a from both sides
The shape may be an appropriate shape such as a small semicircular shape that goes inward toward the inside along the fold line of the above.

[0020]

As described above, in the box-shaped container with an inner bag according to the present invention, the upper side of the rear side plate is broken by pressing the portion defined by the perforation line of the rear side plate with a finger, and the upper side is lifted as it is. The top is released by breaking the perforation ruled line on both sides of the surface, and the bottom is released by peeling off the zipper part provided on the bottom, so the box can be easily disassembled afterwards As a result, the paperboard box and the plastic film inner bag can be easily separated. Therefore, what can effectively deal with the separation and disposal of garbage can be provided.

Further, by making a half cut in the adhesive bonding portion forming the bottom surface, the operation for releasing the bottom portion can be performed more easily.

Also, the perforation line at the upper part of the rear plate, the perforation ruled lines at both sides of the top surface, the zipper part at the bottom surface, and the half cut provided at the bottom bonding part can be formed at the same time when the blank plate is punched from the raw material. It can be manufactured with almost no change in the specifications of the current box type container with an inner bag.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a box-shaped container with an inner bag as one embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which the rear side is viewed obliquely from below.

FIG. 3 is a development view showing a blank plate forming a box when viewed from the front side.

FIG. 4 is a development view showing the same when viewed from the back side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box-type container with an inner bag 2 Box 2a Top surface 2b Inclined surface 2c Front side plate 2d Rear side plate 2e Right side plate 2f Left side plate 2g Bottom surface 3 Inner bag 5 Spout 6 Perforated line 7, 8 Perforated line 9 Zipper 21a, 23a half cut

Claims (2)

(57) [Claims] 1. A board made of paperboard, which is assembled by hot-melt box making, has a bottom surface folded flat, and has an inclined surface formed at the top of the front side plate with a part of the top surface left. In a box-shaped container with an inner bag, comprising a box and a plastic film inner bag built in the box so that the content liquid is poured out from a spout attached to the inclined surface. Form a perforation line going down on the rear side plate opposite to the inclined surface at the upper end by connecting both sides of the upper end, and form a crease line between the top surface and the right side plate and a crease line between the top surface and the left side plate with the perforation line. A box-type container with an inner bag, further comprising a zipper portion provided on the bottom surface of the box body so as to avoid the glue bonding portion. 2. The box-shaped container with an inner bag according to claim 1, wherein a half cut is made in an adhesive bonding portion forming a bottom surface.