JPH08283Y2 - Combined container - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite type container, in particular, a synthetic resin inner bag for filling a liquid in a packaging box made of paperboard, and the outside of the packaging box made of synthetic resin. And a composite container covered with an outer bag.

[0002]

2. Description of the Related Art A bag-in-box type composite container is used as a container for filling various liquids. This type of container has a bag made of a polymer film for filling a liquid in a packaging box made of corrugated cardboard, for example, and has a cylindrical mouth part attached to the bag. Is exposed to the outside through an outer packaging box. Such packaging boxes can be folded flat when not in use, which results in a very good space factor for transporting and storing empty containers.

However, in such a container, a bag for filling a liquid is arranged in a packaging box made of corrugated cardboard paper, and since the corrugated cardboard box faces the outer surface, it is strong when it comes into contact with water. Deteriorates and is damaged. If the contents are filled and put in a refrigerator and then taken out after cooling, condensation will occur on the surface of the outer cardboard box. In order to eliminate such a defect, as shown in FIGS. 8 and 9, the inner bag 2 is arranged inside the packaging box 1, and
A packaging box has been proposed in which the outer side of the packaging box 1 is covered with an outer bag 3. According to such a double bag type composite container, it is possible to prevent the outer corrugated cardboard box from getting wet or condensing.

[0004]

However, in such a double bag type composite container, a lid plate 5 and a bottom plate 6 through which a tubular mouth portion 4 connected to the inner bag 2 penetrates, respectively. 2 is fixed by an adhesive 7.
The inner bag 2 is bonded to the lid plate 5 and the bottom plate 6 with the adhesive 7 so that the inner bag 2 in the packaging box 1 is joined.
Is for accurate positioning. That is, when the inner bag 2 is displaced with respect to the packaging box 1, when the liquid is filled in the bag 2, the inner bag 2 expands so as to follow the inner peripheral surface of the packaging box 1 as shown in FIG. This is because the inner bag 2 is broken, which causes breakage of the inner bag 2.

However, when the inner bag 2 is dot-attached to the lid plate 5 and the bottom plate 6 with the adhesive 7 and the outer side of the packaging box 1 is covered with the outer bag 3, a composite container is manufactured. The process to do is very complicated. In addition, such a complicated manufacturing process makes it extremely difficult to make bags by automation, which increases costs and makes them unsuitable for mass supply.

The present invention has been made in view of the above problems, and in particular, it eliminates the step of spotting the inner bag in the packaging box with an adhesive, thereby simplifying the manufacturing process. It is an object of the present invention to provide a composite type container as described above.

[0007]

According to the present invention, an inner bag made of synthetic resin for filling a liquid is housed in a packaging box made of paperboard, and an outer bag made of synthetic resin is provided outside the packaging box. In a composite container so as to cover, the packaging box is assembled into a tubular shape whose upper and lower sides are opened, and an inner bag and an outer bag are attached to the inside and the outside of the tubular packaging box, respectively, and the packaging is performed. The inner bag and the outer bag are joined to each other above and below the box, and the bottom plate and the lid plate are folded together with the inner bag and the outer bag to close the upper and lower openings.

[0008]

Therefore, the inner bag and the outer bag are attached to the inside and the outside of the packaging box formed by the paperboard in a tubular shape, and the inner bag and the outer bag projecting from the upper and lower sides of the packaging box are mutually attached. The bottom opening is closed by sealing and then folding the inner bag and the outer bag together with the bottom plate of the packaging box. Further, by folding the inner bag and the outer bag together with the lid plate, the upper opening is closed so that the composite container can be assembled.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 3 and 4 show a corrugated cardboard base paper 11 for assembling a packaging box for a composite container according to an embodiment of the present invention.
12 are shown respectively. That is, in the packaging box of the container according to this embodiment, two corrugated cardboard base papers 11 and 12 are used in combination.

First, referring to the corrugated cardboard base paper 11 shown in FIG. 3, the corrugated cardboard base paper 11 is provided with a front plate 13, and a bottom plate 14 is continuously provided at the lower end side so as to be bendable. A lid plate 15 is connected to the upper end of the front plate 13 in a bendable manner. A circular opening 16 is formed at the center of the lid plate 15.

A left side plate 17 is provided on the left side of the front plate 13 so as to be bendable. And this side plate 1
Triangular flaps 18 on the bottom and top of 7, respectively
19 are foldable and are connected in series. A bending line 20 is formed on the left side plate 17 so as to vertically penetrate therethrough, and the bending line 20 crosses the lower flap 18 and the upper flap 19. And the left side plate 1
At the left end of 7, a joint piece 21 is continuously provided so as to be bendable.

Next, another corrugated board raw paper 12 will be described. As shown in FIG.
Has substantially the same configuration as that of the corrugated cardboard base paper 11, and a bottom plate 24 and a lid plate 25 are foldably connected to the lower and upper parts of the back plate 23, respectively. A right side plate 27 is connected to the left side of the back plate 23 so as to be bendable. And the lower part and the upper part of the side plate 27 are respectively 3
Square flaps 28 and 29 are arranged in series. A folding line 30 extending vertically is formed so as to cross the side plate 27 and the flaps 28 and 29. Further right side plate 2
A joining piece 31 is continuously provided at the left end of 7.

Instead of using two corrugated fiberboard base papers 11 and 12, two corrugated fiberboard base papers may be punched in a pre-connected state, and a packaging box may be assembled from a single base paper.

The packaging box assembled from the two corrugated cardboard base papers 11 and 12 shown in FIGS. 3 and 4 is designed to be combined with an inner bag 35 and an outer bag 36 as shown in FIG. Both of the bags 35 and 36 are formed in a tubular shape, and the upper and lower parts thereof are open. Then, these bags 35 and 36 are sealed by the sealing portions 37 and 38 at the lower end side and the upper end side as shown in FIG. Further, the inner bag 35 is connected to a tubular mouth portion 34.

The operation of assembling such a composite type container will be described in more detail. As shown in FIG. 5, two corrugated cardboard base papers 11 and 12 are combined to form a rectangular box-shaped packaging box. That is, the joining piece 21 connected to the left side plate 17 on the front plate 13 side is joined to the end of the back plate 23 to join them. Similarly, the joining piece 31 provided at the tip of the right side plate 27 on the rear plate 23 side is joined to the right end portion of the front plate 13. As a result, a rectangular box-shaped packaging box is assembled from the two corrugated cardboard base papers 11 and 12. In this packaging box, the bottom plates 14 and 24 and the lid plates 15 and 25 are both open.

As described above, the two corrugated cardboard base papers 11 and 12 are
The inner bag 35 and the outer bag 36 are arranged inside and outside the tubular packaging box assembled by joining the above.
That is, the corrugated cardboard base paper 1 is placed between the inner and outer bags 35 and 36.
The packaging box consisting of 1 and 12 comes to be sandwiched. The height dimension of each of the bags 35 and 36 is set to a value slightly larger than the height dimension of the corrugated cardboard base papers 11 and 12. Therefore, the upper end portions of the bags 35, 36 protruding from the upper and lower sides of the packaging box are sealed by the seal portions 38, 37
Seal by.

As a result, as shown in FIG. 6 and FIG. 1, the inner bag 35 and the outer bag 36 are mounted inside and outside the cylindrical packaging box, respectively, and the inner bag 35 is placed above and below the packaging box. Bag 35 and outer bag 3
6 and 6 are sealed by the seal portions 37 and 38.

Such a packaging box is assembled in the shape of a rectangular parallelepiped to fill the liquid therein. That is, the inner and outer bags 3
The bottom plates 14 and 24 are bent inward together with 5 and 36, and the lower flaps 18 and 28 are attached to the bottom plates 14 and 28 from the outside.
Fold it so that it overlaps 24. The upper opening is closed by the lid plates 15 and 25, and the upper flaps 19 and 29 are bent to close the upper opening. That is, the flaps 19 and 29 on both sides are bent so as to overlap the cover plates 15 and 25. As a result, a composite container assembled in a rectangular parallelepiped shape as shown in FIG. 7 is obtained.

In such a container, since the cylindrical mouth portion 34 attached to the inner bag 35 penetrates through the cover plate 15 on the front plate 13 side and faces the outside, the cylindrical mouth portion is formed. It is possible to fill the inside of the liquid through the portion 34 and to discharge the inside of the liquid through the tubular mouth portion 34. Further, such a container can be folded flat when not in use as shown in FIGS. 6 and 1. Therefore, the space factor for transportation and storage is very good.

Moreover, in the composite container according to this embodiment, the inner bag 35 and the outer bag 36 are sealed by the seal portions 37 and 38 above and below the packaging box, respectively. Therefore, when the contents are filled, as shown in FIG. 2, the inner bag 35 is inflated cleanly, which effectively prevents the inner bag 35 from being damaged.

By thus sealing the inner and outer bags 35 and 36 with the seal portion 37 on the bottom side and the seal portion 38 on the upper side, respectively, the step of spotting the inner bag 35 in the packaging box with an adhesive is performed. It becomes unnecessary and there is no danger of welding pinholes due to the use of hot melt for bonding.

In addition to the upper seal portion 38 on the outside of the packaging box, the inner bag 35 is sealed by the seal portion 39 as shown in FIG. Will be inside the packaging box. Therefore, it is possible to prevent the occurrence of upper pinholes due to the rubbing of the packaging box after assembly. Moreover, at the time of assembly, since the inner bag 35 has a predetermined amount of internal space because it is along the front surface of the packaging box, it is possible to fill the liquid by using a simple nozzle type filling device. it can.

[0023]

As described above, according to the present invention, the packaging box is assembled into a tubular shape with the top and bottom opened, and the inner bag and the outer bag are attached to the inside and the outside of the tubular packaging box, respectively. The inner bag and the outer bag are joined to each other above and below the packaging box, and the bottom plate and the lid plate are folded together with the inner bag and the outer bag to close the upper and lower openings. Therefore, it is not necessary to fix the inner bag by spotting it on the inside of the packaging box, which greatly simplifies the manufacturing process and allows the assembly to be automated.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a composite container according to an embodiment of the present invention in a folded state.

FIG. 2 is a vertical sectional view of the same rectangular parallelepiped assembled state.

FIG. 3 is a developed plan view of a corrugated cardboard base paper which constitutes a packaging box.

FIG. 4 is a developed plan view of a corrugated cardboard base paper which constitutes a packaging box.

FIG. 5 is an exploded perspective view showing assembly.

FIG. 6 is a perspective view of the assembled composite container.

FIG. 7 is a perspective view of a rectangular parallelepiped assembled state.

FIG. 8 is a cross-sectional view of a conventional packaging box in a folded state.

FIG. 9 is a cross-sectional view of a conventional packaging box assembled in a rectangular parallelepiped shape.

[Explanation of symbols]

 11 Corrugated Base Paper 12 Corrugated Base Paper 13 Front Plate 14 Bottom Plate 15 Lid Plate 17 Left Side Plate 18 Triangular Flap 19 Triangular Flap 23 Back Plate 24 Bottom Plate 25 Lid Plate 27 Right Side Plate 28 Triangular Flap 29 Triangular Flap 34 Tube Portion 35 Inner bag 36 Outer bag 37 Seal part 38 Seal part 39 Seal part

Claims (1)

[Scope of utility model registration request] 1. A composite container in which an inner bag made of synthetic resin for filling a liquid is housed in a packaging box made of paperboard, and the outer side of the packaging box is covered with an outer bag made of synthetic resin. Assembling the packaging box into a tubular shape with an open top and bottom, and mounting an inner bag and an outer bag inside and outside the tubular packaging box, and at the top and bottom of the packaging box, an inner bag and an outer side, respectively. A composite container, wherein a bag is joined to each other, and a bottom plate and a lid plate are folded together with the inner bag and the outer bag to close upper and lower openings.