JPH07125770A - Transportation container for liquid - Google Patents

Abstract

PURPOSE:To provide a liquid container for transportation, which keeps the contents safely against external shocks and reduces the keeping space of vacant containers without shock-absorbing materials charged in the clearance between the under face of the lid of the rigid plastic external case and the upper face of the contents. CONSTITUTION:A liquid container is constituted of a rigid plastic external container 1 composed of a reverse pyramidal and trapezoidal body 1a having a specified volume, which can be superposed in the vacant state and the lid 1b thereof, and an internal container 2 having a pouring inlet 3, made of square double or tripple flexible plastic film containing the contents. A liquid material is poured in the internel container 2 and it is placed in the external container 1. The magnitude of respective external and internal containers 1, 2 is defined so that the clearance between the upper face of the internel container 2 and the under face of the lid 1b gets to 5-20mm in the state that the lid is put on.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid transportation container which can be repeatedly used for transportation of liquid substances such as beverages, foods and chemicals.

[0002]

2. Description of the Related Art In recent years, liquid transport containers used for transporting beverages such as mineral water and alcoholic beverages, liquid foods such as soy sauce and oil, and liquid chemicals such as paints and pesticides have been replaced by conventional metal cans and plastic bottles. Instead, containers called bag-in-box (BIB) have become mainstream. This bag-in-box is a one-time use, so-called one-way transportation, in which an inner container of plastic film or blow molded product is inserted and set in an outer container such as paperboard or corrugated board. Since it can be incinerated and the outer container can be recycled as waste paper, it can be easily disposed of, and has rapidly spread.

However, the bag-in-box which uses such a cardboard as an outer container has the following drawbacks. That is, an outer container such as a corrugated cardboard designed for one-way transportation is not suitable for repeated use and is weak against water, so that it is easily damaged when wet with rain or the like, and stacking becomes difficult. On the other hand, if corrugated board or the like is processed to have water resistance, there arises inconvenience that a separate separation process is required for recycling as waste paper. In addition, transportation of mineral water, etc., whose contents have almost no odor
In the case of storage, the odor of the treatment agent such as corrugated cardboard may be transferred to the contained liquid material through the inner bag. In addition, pests are easily infested with corrugated cardboard and the like, which lacks hygiene.

Therefore, recently, a bag-in-box using plastic as a material for the outer container has been proposed (Japanese Patent Laid-Open No. 4-72142, etc.). When such an outer container made of plastic is used, the above-mentioned drawbacks in the case of using a corrugated board or the like as a material for the outer container are improved, and there is an advantage that they can be stacked high.

[0005]

However, when plastic is used as the material of the outer container, the shock resistance is high but the shock absorption is inferior to the case where corrugated cardboard is used. If the container is accidentally dropped, the inner container may be torn and the contents contained may flow out. In order to prevent such an accident, it may be possible to fill the gap between the outer container and the inner container with a cushioning material, but the cost is high due to the material cost and the effort of filling the cushioning material, and the inconvenience that waste increases. is there.
In addition, since the plastic outer container cannot be folded like the outer container made of corrugated ball, it is a storage space for empty containers.
You can't reduce the cost.

Therefore, as a result of various experiments such as a drop test and a transport test, the present inventor did not fill the gap between the outer container and the inner container with a cushioning material, and the contents against the impact from the outside. In addition, we have completed a liquid transport container that can be maintained and can be stacked to make it a small volume when empty.

[0007]

In order to solve the above problems, the present invention provides the following liquid transport container. That is, an outer container 1 made of a hard plastic, which has a predetermined volume and can be superposed in the shape of an inverted truncated pyramid, and a lid 1b thereof, and a rectangular double or triple soft plastic for containing contents. It is composed of an inner container 2 formed of a film and having a spout 3. A liquid content is injected into the inner container 2 to be contained in the outer container 1, and the upper surface of the inner container 2 with the lid 1b closed and the lid. 1b is a liquid transportation container in which the size of the outer container 1 and the inner container 2 is set so that the gap between the lower surface of 1b and the lower surface is 5 to 20 mm.

[0008]

In the present invention, since the size of the outer container and the inner container is set so that the gap between the upper surface of the inner container and the lower surface of the lid of the outer container is set to 5 to 20 mm, a proper play can be secured. Then, within the range of this interval, the inner container is less likely to be broken (broken). Further, since the shape of the main body of the outer container is the inverted truncated pyramid shape, they can be overlapped when empty.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a partially cutaway perspective view of a liquid transportation container according to the present invention, FIG. 2 is a perspective view showing a state in which contents are discharged from the liquid transportation container, and FIG. 3 is a vertical section of the liquid transportation container. Fig. 4 shows the number of drops and the lid before the inner container ruptures.
1b is a graph showing the relationship between the gap between the upper surface of the inner container and the lower surface of the lid when closed, FIG. 5 is a perspective view of the outlet of the spout provided on the top plate of the lid, and FIG. FIG. 7 is a perspective view and a cross-sectional view showing an embodiment of FIG. 7, FIG. 7 is a perspective view and a cross-sectional view showing still another embodiment of the outlet, and FIG. 8 is a front view showing a fitted state of the lid of the outer container and the main body. FIG. 9 is an enlarged sectional view showing a fitted state of the lid of the outer container and the main body.

As shown in FIGS. 1 and 3, a liquid transport container according to the present invention is formed of an outer container 1 including a main body 1a and a lid 1b both made of hard plastic, and a soft plastic film. And the inner container 2.

The main body 1a of the outer container 1 is formed in an inverted truncated pyramid shape, and a plurality of inner containers 2 can be stacked when the inner container 2 is empty, so that space can be saved when the outer container is stored. it can. Further, by forming the shape of the inverted truncated pyramid, it is possible to stabilize the contents at the position shown in FIG. 2 when discharging the contents.

The inner container 2 is formed in a rectangular shape by double or triple-layering a soft plastic film such as polyethylene or ethylene vinyl acetate copolymer and welding the periphery. When the film has a double structure, a polyethylene film having a thickness of 60 μ to 100 μ is used for both the inside and the outside. In order to improve the gas barrier property, use a film of 3
Although it has a heavy structure, the material in that case is a polyethylene film from the inside, a composite film of an ethylene vinyl acetate copolymer saponified product, a polyethylene film or a composite film of nylon, in the order of 60 μ to 100 μ in thickness.
It is preferable to use the same one.

The sizes of the main body 1a and the inner container 2 can be arbitrarily determined. For example, the sizes shown in Table 1 are determined according to the volume of the liquid content accommodated in the inner container 2.

[Table 1]

In Table 1, the gap between the upper surface of the inner container 2 and the lower surface of the lid 1b in the state where the lid 1b is closed shows that the integrity of the contents is shown from the results of the drop test and the transport test shown in Table 2. It is a selection of high numbers. The number of drops until the inner container obtained from these test results broke and the inner container 2
The relationship between the upper surface and the gap between the lower surface of the lid 1b is shown in FIG.

[Table 2]

The inner container 2 is provided with a spout 3. The spout 3 is formed by welding the base of a generally used plastic cylindrical spout to the inner container 2.
A concave stopper made of the same material is fitted and stored in the outer container 1 during transportation and storage. In order to discharge the stored contents, the spout 3 is pulled out from the outlet 4 provided in the lid 1b of the outer container 1, the plug is removed, and a nozzle is attached if necessary. The nozzle to be mounted may be, for example, the cock type nozzle shown in FIG. 1 or the hose type nozzle shown in FIG.

The outlet 4 provided in the lid 1b needs to be able to be closed except when the contents are discharged, from the viewpoint of preventing damage to the spout 3 during transportation of the container and hygiene. As the closing means, any of the shutter type as shown in FIG. 5, the seal type as shown in FIG. 6 and the rubber stopper type as shown in FIG. 7 can be selected. Whichever closing means is selected, the base of the spout 3 is taken out of the outlet 4
A semicircular cut having the same diameter as that of the spout 3 is provided at the outlet 4 so that the spout 3 can be locked. By locking the base of the pouring spout 3 in this notch, the pouring spout 3 is stable even when the contents are discharged.

As shown in FIGS. 8 and 9, the peripheral edge portion of the lid 1b is formed so as to sandwich the upper edge portion of the main body 1a in order to enhance the sealing property of the outer container. Further, the main body 1a and the lid 1b of the outer container 1 are fitted with the fitting projections 5 formed at two places on the long side of the lid 1b at the fitting holes 6 provided at the corresponding positions of the main body 1a. It is fixed by doing. By fixing the lid 1b in this manner, the lid 1b does not easily fall off during transportation and the like, while the pressing portion 7 provided under the fitting hole 6 is pushed to push the fitting protrusion 5 of the lid 1b. The lid 1b can be easily removed by pushing up the lower part.

[0018]

According to the liquid transportation container of the present invention,
Without filling the space between the lower surface of the lid of the outer container and the upper surface of the inner container with buffer material, the contents can be protected against impact from the outside, safe transportation can be ensured, and the empty container can be secured. It was possible to repeatedly use it by overlapping in a small volume.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a liquid transportation container according to the present invention.

FIG. 2 is a perspective view showing a state in which contents are being discharged from a liquid transportation container.

FIG. 3 is a vertical cross-sectional view of a liquid transportation container.

FIG. 4 is a graph showing the relationship between the number of drops until the inner container is broken and the gap between the upper surface of the inner container and the lower surface of the lid when the lid 1b is closed.

FIG. 5 is a perspective view showing an outlet closing means provided on the top plate of the lid.

FIG. 6 is a perspective view and a sectional view showing another embodiment of the outlet.

FIG. 7 is a perspective view and a sectional view showing still another embodiment of the outlet.

FIG. 8 is a front view showing a fitted state of the lid of the outer container and the main body.

FIG. 9 is an enlarged cross-sectional view showing a fitted state of the lid of the outer container and the main body.

[Explanation of symbols]

 1 Outer container 1a Main body 1b Lid 2 Inner container 3 Spout 4 Outlet 5 Fitting protrusion 6 Fitting hole 7 Pushing part

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kazuhiro Goto 1457-6 Funaho, Funaho-cho, Asaguchi-gun, Okayama (72) Inventor Shinichi Sawai Canal Co., Ltd. 1-2-15 Ryusen, Taito-ku, Tokyo ( 72) Inventor Takeshi Ushida 2-14-6 Shindo, Nishi-ku, Nagoya, Aichi Prefecture Cow Cow Co., Ltd.

Claims (1)

[Claims] 1. An outer container 1 made of a hard plastic, which has a predetermined volume and can be superposed in the shape of an inverted truncated pyramid, and a lid 1b thereof, and a rectangular double or triple layer for containing contents. Inner container 2 formed of the soft plastic film and having a spout 3, and the liquid content is injected into the inner container 2 to be housed in the outer container 1 and the lid 1b is closed. A liquid transportation container in which the size of the outer container 1 and the inner container 2 is set so that the gap between the upper surface and the lower surface of the lid 1b is 5 to 20 mm.