JPS5815304Y2 - Illustrated Ibukuro - Google Patents

Description

[Detailed description of the invention] This invention relates to a large returnable bag that is used repeatedly when transporting rice grains, fertilizers, and other granular, powdered, or lump materials.

Generally, this type of bag is hung vertically and loaded onto a truck, freight car, ship, etc., as it is packed vertically, and when unloading, it is hung vertically or placed directly above a hopper, etc. Since the container is moved and the contents are discharged from the lower end for use, there is an advantage that the work can be done consistently and its efficiency can be improved.

Conventionally, such returnable bags include cylindrical bags and rectangular cylindrical bags.

The opening of a cylindrical item is generally closed by tightening a string, which gives it a simple structure and excellent durability. When hung vertically, it expands due to the weight of the contents,
It has the disadvantage that it becomes elongated vertically, and it also has the disadvantage that when it is loaded on a truck or the like, it is not possible to obtain a stable and orderly loading condition.

Furthermore, there is also the complexity of having to tighten the upper end openings one by one.

On the other hand, rectangular cylindrical items do not stretch as much as cylindrical ones when suspended, and can provide a stable and orderly loading condition, but their shapes are generally more complex. This is especially noticeable at openings.

In other words, the rectangular tube-shaped bag has a rectangular top surface, so
It is not possible to simply tighten the rim with a string.

If this were done, the angular shape would collapse, and there would be no point in forming it into a prismatic tube shape.

Generally, the more complex the shape, the weaker the strength.

Therefore, apart from the upper end, it is not preferable that the lower end, on which a larger force acts, has a complicated structure.

In addition, since the entire weight of the contents above the bottom of the bag acts on the bottom of the bag, it is difficult to maintain a square tube shape. will occur.

Therefore, it is better to make the bottom of the bag cylindrical.

On the other hand, if the upper part of the bag (that is, the part other than the bottom part) maintains a rectangular cylindrical shape, the loaded state will not collapse to a large extent when the bags are loaded.

The present invention was developed based on the above circumstances, and aims to provide a bag that can compensate for the drawbacks of the cylindrical and prismatic bags without compromising their advantages. be.

That is, in this case, the main body is formed into a rectangular tube shape without being cylindrical, and the lower end opening is closed so that only the bottom part changes from the cylindrical shape to the spherical shape, and the angular shape corresponding to the lower end opening is closed. An upper end opening that can be opened and closed with a zipper or the like is provided on the top surface of the bag, and the center of discharge at the lower end of the bag coincides with the center of input at the upper end of the bag.

In order to construct a square tube shape, the top surface is made square, reinforcing material is used at each corner, and the warp threads on each surface part of the square tube shape are made stronger or denser. This can be easily solved with technology.

Since the center of the input and the center of the discharge are aligned, when the top opening is opened and the filling aid is used to fill the contents, the contents will be directed toward the bottom opening and toward the center. When the bag is filled, the contents will not be filled into the deformed state, and since the main body is square cylindrical, even if the bag is hung vertically, it will not be as cylindrical as a whole. By using a zipper etc. at the top end of the bag without stretching, there is no need to tighten the bag opening, and even if the main body is dropped violently on the floor, the bag opening will not be damaged by the impact. This feature has been achieved in that the contents do not spill out.

The embodiments shown in the drawings will be described below.

1 is a main body made of a woven fabric whose weft and warp are made of a synthetic resin with strong tensile strength, such as polyethylene or polypropylene, in order to withstand heavy objects. Using reinforcement material at the corners,
In weaving each side of the rectangular tube, possible technical means are used, such as making the warp threads in the corner parts stronger or denser.

2 is a reinforcing material 2' provided at the corner of the square tubular mounting body 1.
A pair of hanging bands attached to the.

The lower end opening of the main body 1 is knitted so that it can be closed as usual, but its structure is such that three loop-shaped pocket stitches are provided with a plurality of string passing holes 4 at regular intervals. A bag bottom tightening string 5 is inserted through the string passing hole 4.

The cinching string 6 is inserted around the lower opening of the bag, and its insertion structure is either to form a blind weave section consisting only of warp yarns with no weft directly in the main body of the bag, or to provide a hole through which the string can pass. Insert it into this.

Therefore, the bag is constructed so that the bottom tightening string 6 is first tied, and then the tied part is pushed inward, and then the bag bottom final tightening string 5 is squeezed to close the bag bottom.

The top surface 7 of the bag is formed into a flat square shape, and there are double lids 8 and 9 on this side.

Both of the upper and lower lids 8 and 9 can be opened left and right around the openings 8a and 9a, and their intersection point 10 is located on the center line of the lower end opening.

The upper cover 8 forming the upper surface 7 is made somewhat larger than the lower cover 9, and can be closed with a fastener f or a velvet fastener f'.

Reference numeral 11 denotes a filling aid, which has a cylindrical shape, and has a temporary suspension band 12 attached to the hopper at the upper end, and a ring-shaped core material 13 and 14 made of iron, plastic, etc. at the lower end, which increases the shrinkage allowance 15. It is sewn on.

Now, in order to fill the contents into the bag, close the bottom of the bag as described above, open the upper and lower lids 8 and 9 of the double lid, and
The ring-shaped core material 13, 14 portion of the filling aid 11 is
Insert the openings 8a of the upper lid 8 and lower lid 9 as shown in the figure.
, 9a are brought into contact with the foreshortened portion 15.

After that, the contents are filled into the bag from the cylindrical part of this filling aid 11, and the double lid upper lid and lower lid 8, 9 are used.
Since the intersection of is on the center line of the lower end of the bag bottom, the filling aid will correctly face the bottom opening, and the contents will be correctly placed towards the center of the bag, and will not be placed in a deformed state. do not have.

Therefore, there is no need to modify the shape of the filling rear packaging.

Moreover, the lower end opening of the filling aid 11 is held between the opening 8a of the upper lid 8 and the opening 9a of the lower lid 9 by the annular core material 13, 14, so that it does not move unnecessarily.
The contents are filled correctly.

After filling, the filling aid 11 is removed, the upper and lower lids 8 and 9 of the double lid are closed, and the hanging band 2 is used to suspend and transport.

The filled contents are transported as described above, and as shown in FIG. Therefore, the force due to the weight of the contents that acts to push open the part tightened by the bag bottom final tightening string 5 is relatively small.Therefore, there is no risk that the bottom will come off during hanging transportation, and the bag can be transported easily. Although the main body 1 filled with the contents expands due to the contents, it has a rectangular tube shape compared to a cylindrical one, so it can be stably placed vertically on a truck, freight car, etc. I can do it.

However, when the bottom tightening string 5 is loosened in order to release the contents, the part bound by the bottom tightening string 6 is pushed out to fall due to the weight of the contents. The substance is easily released.

By the way, there is a string passing hole 4 in the bag sewing 3 part, and the bag bottom tightening string 5 is inserted through this, so the string passing hole 4 is not directly exposed to the inner surface of the packaging body, and therefore the contents are not exposed. There is no leakage and the strength is not weakened due to the provision of the string passage hole 4. Also, the bag bottom is thickly shaped at the perforations of the bag stitching part 3, so it does not become uneven even under filling pressure. , a stable external shape can be obtained.

The one shown in FIGS. 8 and 9 shows a modified example of the upper end opening, which does not have a double lid structure, but has two bands 16 attached in parallel to the back surface of the lid so as to intersect with the fastener f of the opening 8a. Only the ends of the band 16 are sewn.

In this case as well, the configuration is such that the crossing portion matches the lower end opening of the bag.

The direction intersecting the longitudinal direction of the fastener f is reinforced by the band 16.

The one shown in FIG. 10.11 has a double lid structure, but the openings g a and 9 a of the upper lid 8 and the lower lid 9 are on the same line, and the upper lid 8 is provided with a zipper f.

In this case, the opening 9a of the lower cover 9 in the direction crossing the direction of the fastener f in the one shown in FIGS. 1 and 2,
Alternatively, there is no band 16, 16 in the direction intersecting the direction of the fastener f in those shown in FIGS. 8 and 9, but the openings 8a and 9a of the upper lid 8 and lower lid 9 are
They are on the same line and coincide with each other, and since they are located in the center of the upper cover 8 and lower cover 9 and do not extend all the way to the cover plate, the openings 8a and 9a are widest at the center, and the openings are filled with Since the auxiliary tool 11 will be inserted, the contents will be thrown toward the center of the bag.

The one shown in FIGS. 12 and 13 uses a velvet fastener f' instead of the fastener f in the one shown in FIGS. 10 and 11, and the filling aid 11 is inserted as follows. This is similar to that shown in FIGS. 10 and 11.

In any case, the most distinctive feature of the present invention is that the packaging body is shaped like a rectangular cylinder, and the bottom opening is closed so that only the bottom part is cylindrical. Although the main body bulges out, the overall shape is square and cylindrical, so it does not become elongated due to the weight of the contents compared to a cylindrical one, and it is possible to fill the contents correctly. Since the center of input and the center of discharge of the bag are coincident, it is possible to fill the bag effectively.

[Brief explanation of the drawing]

Figure 1 is an overall slanted view of the proposed returnable bag. FIG. 2 is a partial cross-sectional view of the same as above. Figure 3 is a partial vertical sectional view of the returnable bag according to the present invention. Figure 4 is a partial view of the lower part of the bag that is being finalized. Figure 5 is a partial view of the lower part of the original returnable bag after the partial notch has been tightened. FIG. 6 is a perspective view showing a state in which the filling aid is being inserted into the upper end opening of the bag shown in FIG. 1; FIG. 7 is a partial cross-sectional view of the same as the above, showing a state in which the filling aid has been fitted. Figures 8 and 9 are a plan view and a cross-sectional view showing the structure of the upper end of the bag according to an embodiment different from those shown in Figures 1-2. Fig. 10.11 is a plan view and a cross-sectional view of the upper end of the bag according to an embodiment further different from Fig. 8.9. Figures 12 and 13 are a plan view and a cross-sectional view of the case where a velvet fastener is used to close the top end of the bag. 1... Packing body, 2... Hanging band, 7... Top surface of bag.

Claims (1)

[Scope of utility model registration request] The housing body is formed into a rectangular tube shape, and the lower end opening is closed with a tightening cord so that only the bottom part is cylindrical. A pair of hanging bands are provided on both sides of the square tubular housing body, and the lower end opening A top end opening that can be opened and closed with a zipper etc. is provided on the top of the bag corresponding to the
A heavy goods returnable bag configured such that the center of discharge at the bottom end and the center of input at the top end coincide with each other.