JPH0513709Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a container for transporting powder and granular material that is suspended and discharged from the bottom by its own weight.

PRIOR ART

As shown in FIGS. 7 and 8, conventional containers for transporting powder and granular materials of this type consist of a tough outer bag X and a dense inner bag Y placed inside the outer bag.
It is commonly known as a flexible container. Both have a capillary inlet 51 on the top and a capillary outlet 52 on the bottom, both of which are closed with a fastening string 53, and a hanging rope 54 with a fastener 55 on the side of the outer bag. It is attached through.

When this container for transporting powder or granular material is suspended by a hanging rope and the fastening string is loosened at the destination, the powder or granular material will fall under its own weight from the discharge port and be discharged.

[Problem that the invention attempts to solve]

However, when this conventional container for transporting powder and granular materials is intended to be used many times as a returnable bag, for example, if the transported object is iron powder, rusty iron powder that scatters during discharge and adheres to the outer bag surface gets mixed in. There is a problem,
In addition, even with materials other than iron powder, the outer bag must be washed each time to prevent foreign matter from entering, which is a problem that requires considerable time and effort.

There is also the problem that the bag becomes expensive when it is intended to be used as a single-use disposable bag.

This idea was made in view of these problems with conventional products, and its purpose was to create an inexpensive product made from cardboard, which was sufficiently profitable as a disposable container, and The object of the present invention is to provide a container for transporting powder or granular material whose contents can be easily discharged at a destination.

[Means to solve the problem]

In order to achieve the above object, the container for transporting powder and granular materials in this invention has a rectangular cylindrical body formed by a pair of side walls and a pair of end walls, and this body has a lid flap at the upper end of each wall. It consists of a corrugated outer box, which has an outer bottom flap on the lower edge of each side wall and an inner bottom flap on the lower edge of each end wall, and an inner bag to be placed inside the outer box. A slit for inserting a knife when opening is formed in each of the outer bottom flaps at the abutting edges, and a cutout is provided at a position corresponding to this slit in the inner bottom flap, and a cutout is provided in each outer bottom flap parallel to the slit. A center fold line is provided, and the tape is adhered to the position where it passes over the slit of the outer sole flap and reaches the end wall.

[Effect]

When opening a container for transporting powder and granular materials constructed in this way, a hanging band is hung outside the center fold line of the outer bottom flap, and a cutter is inserted into the slit at the abutting edge of both outer bottom flaps. Then cut the bottom of the inner bag and cut the tape (see Figure 5).
The outer sole flap bends and opens from the center fold line due to the weight of the contents (see Fig. 6), allowing the contents to be safely and easily taken out.

〔Example〕

1 to 6 show examples of this invention,
As shown in FIG. 1, this powder transport container has a rectangular cylindrical body formed by a pair of side walls 1 and a pair of end walls 2 made of corrugated cardboard. The matching outer lid flaps 3 are connected to the lower edges thereof, and the outer bottom flaps 4 which abut against each other during assembly are connected to each other, and the inner lid flaps 5 are connected to the upper edges of each end wall 2, and the inner bottom flaps 6 are connected to the lower edges thereof. a rectangular parallelepiped outer box A;
This outer box is combined with an inner bag B made of a synthetic resin film or the like with an open top to be placed inside the outer box.

The outer box A made of corrugated cardboard is formed by bending a single punched board shown in FIG. The punched substrate will be explained in detail. A pair of rectangular side walls 1 and a pair of rectangular end walls 2 are alternately connected in the horizontal direction via vertical fold lines 7, and a narrow seam allowance 8 is connected to the edge of the end side wall 1, A rectangular outer lid flap 3 is attached to the upper edge of each side wall 1 via a transverse fold line 9, and a transverse fold line 10 is attached to the lower edge of each side wall 1.
A rectangular outer bottom flap 4 is connected to the upper edge of each end wall 2 via a horizontal fold line 9, and a rectangular inner lid flap 5 is connected to the lower edge of each end wall 2 via a horizontal fold line 10. Shape inner bottom flaps 6 are arranged one after the other.

Each outer bottom flap 4 that abuts during assembly has a long slender slit 11 at the abutting edge into which a knife is inserted when opening.
(See FIG. 3) A shallow and long notch 12 is provided, and a center fold line 13 is provided in the middle in parallel with the transverse fold line 10 and parallel to the slit 11.

The slit 11 is used to cut the inner bag by inserting a knife from the bottom when opening the bag, and it is necessary to form the width to fit the knife.In addition to providing the notch 12 as described above, the outer bottom flap A slit may be formed by shortening the length.

Each inner bottom flap 6 has a notch 14 that deeply enters at right angles from the center of the free edge, notches 15 that shallowly enter in parallel to both sides of this notch, and a diagonal cut that connects the tips of these parts. A pair of square opening fins 17 bounded by a fold line 16 are provided.

The central cutout 14 is a cut with some width, and when each bottom flap is folded in and the bottom is assembled (see Figure 3), it overlaps with the slit 11, so that the cutter does not fit inside the box when the package is opened. Easy to get deep into.

The opening fins 17 in the inner bottom flap are formed as large as possible to allow the contents to be smoothly discharged, and are designed to open in all directions from the diagonal fold line (see FIG. 6).

Furthermore, the center fold line 13 of the outsole flap 4 is provided at a position (see FIG. 3) where the hanging of the opening fin does not get in the way.

In this embodiment, the cutout portion 14 is a simple cut, but the entire opening fin 17 may be cut out.

In addition, when the cardboard material is a thick board with 5 to 7 layers, the center fold line 13 of the outer bottom flap and the diagonal fold line 16 of the inner bottom flap are on the inside surface of the cardboard, as shown in FIG. It is formed by a half-cut cut, making it easy to bend.

The shape of the opening fin 17 of the inner bottom flap is as follows.
In addition to the above-mentioned shapes, the shape can be appropriately selected in consideration of the size of the bottom surface, the material of the granular material to be transported, the particle size, the flow friction, etc.

When using the powder transport container, fold in the inner bottom flap at the lower edge of the trunk of the outer box A and open the outer bottom flap 4.
At the same time, the adhesive tape a (see FIG. 5) is pasted to the position where it passes over the slit in the abutting portion of the outer sole flap and reaches the end wall to form the bottom surface.
For powder and granules, place the inner bag inside the outer box with an open top.
It is injected into this inner bag. Then close the inner bag,
The inner bag is sealed by folding the inner and outer lid flaps, but if the upper end of the inner bag is held between the inner and outer lid flaps or fixed to the lid flap, the inner bag will fall when the contents are removed. It is convenient for taking out the contents.

Next, the fastening string b is wrapped lengthwise around the entire box body so as to pass through the center fold line 13 and the tip of the outer bottom flap on the bottom surface, and the packaging is completed.

By hanging the string in this way, the outer sole flap does not bend from the center fold line and does not accidentally fall out during transportation.

If the contents are relatively light, the fastening string b may be omitted and only the sealing adhesive tape a may be used.

At the destination, as shown in Figs. 5 and 6, the box is suspended by hanging a pair of hanging bands C on the outside of the center fold line 13, and a long-handled knife d is inserted into the slit 11 in the center of the bottom. When the cutting edge is deeply pierced and the adhesive tape a and the inner bag B are cut, and the fastening string b is then cut, the opening fin and the outer sole flap bend from the fold line due to the weight of the powder and granule, respectively, and open. of powder and granules are discharged all at once.

When first inserting a knife into the slit to cut the inner bag, leave both ends of the adhesive tape a uncut to maintain the sealed state and prevent the contents from dripping out before cutting the inner bag. It's safe.

[Effect of idea]

This idea is structured as described above, so
This produces the following effects.

The outer box is made of cardboard, and can be provided at low cost, making it profitable as a disposable container.Since the container is rectangular, there is no wasted space during loading, and transport efficiency is high.

In addition, when opening the package at the destination, there is a slit for inserting a knife in the center of the bottom, which acts as a guide and allows the knife to be easily inserted from the bottom of the box, allowing the knife to accurately cut open the inner bag without cutting open the cardboard. This has the effect of allowing the contents to be taken out safely and easily.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of this invention, Fig. 2 is a bottom view of the above, Fig. 3 is a developed plan view of the outer box of the above, Fig. 4 is an enlarged sectional view showing fold lines, Fig. 5
FIG. 6 is an explanatory diagram showing the procedure for discharging the contents. Further, FIG. 7 is a perspective view showing a conventional example, and FIG. 8 is a longitudinal sectional view of the same. A...outer box, B, Y...inner bag, X...outer bag, a
... Adhesive tape, b ... Fastening string, c ... Hanging band, d ... Cutlery, 4 ... Outer bottom flap, 6 ... Inner bottom flap, 11 ... Slit, 12 ... Notch, 13 ... Center fold line, 14...Deletion, 16...
...diagonal crease line, 17...opening fin.

Claims (1)

[Scope of utility model registration request] The pair of side walls and the pair of end walls form a rectangular cylindrical body, and this body has a lid flap connected to the upper edge of each wall, an outer bottom flap connected to the lower edge of each side wall, and an outer bottom flap connected to the lower edge of each side wall. It consists of a cardboard outer box with inner bottom flaps connected to the lower edge of the end wall, and an inner bag to be placed inside this outer box.A cutlery is inserted into each outer bottom flap at the abutting edge when opening the box. In addition to forming a slit, a cutout is provided in the inner sole flap at a position corresponding to the slit, and each outer sole flap is further provided with a center fold line parallel to the slit, which passes over the slit in the outer sole flap. A container for transporting powder or granular material, characterized in that a tape is attached to the end wall.