JPH0369793B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a prismatic cylindrical transportation bag, and more particularly to a prismatic cylindrical transportation bag comprising an inner tube and an outer bag made of a flexible sheet, both of which are cylindrical. The purpose is to provide a transport bag that can be easily manufactured using a cylindrical material, and that takes on a prismatic cylindrical shape when filled with contents, making it convenient for transportation and storage.

Containers for transporting or storing powdered or granular agricultural products, processed agricultural products, or industrial raw materials include those made of rigid materials such as plates, metals, synthetic resin molded products, etc., and fabrics and synthetic resin sheets. Some are made of flexible materials such as. On the other hand, there are two types of containers: cylindrical and prismatic, and various containers have been proposed depending on the combination of materials and shapes. Considering the type of contents to be filled, ease of handling, price, volume when empty, etc., it is preferable to use flexible materials such as cloth or synthetic resin sheets. Sometimes a rectangular tube shape is most desirable, but when using such flexible materials, it is necessary to make the material into a rectangular tube shape by some means and maintain this rectangular tube shape. In the conventional case, a peripheral wall made of a flexible material is bent in advance to form a rectangular tube shape, and perforated support walls are installed at the four corners of this peripheral wall, that is, between adjacent peripheral walls, to hold the contents. Even when filled, the container maintains its predetermined prismatic cylindrical shape. In this case, it is necessary to bend the bag in advance, and it is necessary to secure perforated support walls by sewing or other means to the four corners of the rectangular cylinder-shaped peripheral wall. , wooden boards, metals, etc., but if the item is made of a flexible material such as a bag, another member made of the same flexible material may be stretched at a specific position. Installing and fixing is an extremely difficult task,
This is time-consuming and may require modification of the sewing machine or require complicated work.

In view of these points, the inventor of the present invention has developed a bag that can be easily manufactured, has a rectangular cylindrical shape when filled with contents, and has the least amount of voids between bags during transportation and storage. As a result of intensive research and various experiments to obtain a rational prismatic cylindrical bag suitable for transportation and storage, we found that it is a non-porous, cylindrical, flexible sheet-like product with a length shorter than the outer bag. It consists of an inner cylinder and an outer bag made of a cylindrical flexible sheet whose circumference is approximately four times the diameter of the inner cylinder. The inner cylinder is inserted so that the upper and lower ends of the inner cylinder are at a position away from the upper and lower ends, and when the inner cylinder and outer bag are combined, when the outer bag is made square, the inner cylinder is inserted into the outer bag. This purpose can be well achieved by creating a prismatic cylindrical transport bag that has its contact parts sewn or glued together to form a prismatic cylindrical shape when filled with contents. The present invention has been obtained.

Now, an example of the implementation of the present invention will be explained in more detail with reference to the attached drawings. 1 is an outer bag, 2 is an inner cylinder, and the length H of the outer bag 1 is longer than the length H' of the inner bag 2. ing. Also, the circumference of outer bag 1 is X, which is the inner bag 2.
The length is approximately four times the diameter Y. Both the outer bag 1 and the inner bag 2 are cylindrical and made of sheet-like material. This sheet-like material is, for example, a woven fabric, a plastic film, a non-woven fabric, or a so-called warif, which is made by continuously laminating vertically and horizontally a split fiber made by making small cracks in a plastic film. Although there are no particular limitations on these materials or structures, it is preferable that they have no elongation as a whole. In the case of woven fabrics, woven fabrics such as ribbon yarns and tape yarns are preferred. In addition, the density of the sheet-like material, that is, the coarseness of the mesh, is arbitrary and varies depending on the type and size of the contents to be filled, and the contents must be relatively large and have good air permeability. If the item is desired, a coarse one is preferable, and if the contents are fine, a tightly woven one is preferable to prevent leakage. In addition, when the contents are fine and must not leak from the outer bag, but cannot be prevented from flowing out from the inner bag, it is preferable to use a bag with relatively coarse mesh. The inner cylinder 2 is inserted inside the outer bag 1, but at this time the inner cylinder 2 is positioned in the middle of the outer bag 1. In other words, the upper end 3 of the outer bag 1 and the upper end 4 of the inner tube 2 must not be in a state where they coincide, nor the lower end 5 of the outer bag 1 and the lower end 6 of the inner tube 2, as shown in FIG. If the upper end 3 of the outer bag 1 and the upper end 4 of the inner cylinder 2 are placed apart from each other as shown in the figure, the length of the outer bag 1 is equal to the length of the inner cylinder 2.
Since it is longer than the length, the lower end 5 of the outer bag 1 and the lower end 6 of the inner cylinder 2 are naturally located at a distance. In this case, the upper end 3 of the outer bag 1
and the upper end 4 of the inner cylinder 2 and the lower end 5 of the outer bag 1
The inner cylinder 2 may be arranged so that the lengths between the inner cylinder 2 and the lower end 6 of the inner cylinder 2 are equal, or may be arranged so that the lengths are unequal. The outer bag 1 and the inner tube 2 inserted into it are joined together at a specific point by means such as sewing or gluing. If the inner tube 2 is inserted inside the outer bag 1, which has been made into a square, with its cylindrical shape, the outer bag 1 and the inner tube 2 will be As shown in Figure 5, it is inscribed at locations A, B, C, and D. This is because the circumferential length of the outer bag 1 is approximately four times the diameter of the inner cylinder 2, and the inscribed A,
It may be sewn or glued at locations B, C, and D. However, in the present invention, the outer bag 1 and the inner cylinder 2 are not limited to joining at the points indicated by A, B, C, and D, but as shown in FIG. , C, and D at two points A' and A'' equidistant from the contact points, or at three points A, A', and A'', or between A' and A''. This is because the outer bag 1 and the inner cylinder 2 are not made of a rigid body such as metal, but are made of a sheet-like material that has flexibility and can be easily deformed. It is possible.

There are various ways to use a transport bag in which the outer bag and inner cylinder are combined in this way, but the simplest way is to tie the lower end 5 of the outer bag 1 with a string, etc., and use it as a bottom. Of course, inside the inner cylinder 2 to store things,
The space between the inner tube 2 and the outer bag 1 may also be filled with things to be stored, and the upper end of the outer bag 1 may be tied with a string or the like in the same way as the bottom. Another way to use it is to provide a top wall 7 and a bottom wall 8 on the top and bottom of the combined outer bag 1 and inner cylinder 2 to form the main body of the transporter. An injection barrel 9 and a cover 10 for the injection barrel 9 are attached. In addition, the bottom wall 8 has a discharge tube 1 for stored items.
1 and a cover 12 for this discharge tube 11 are attached. The top wall 7 and the bottom wall 8 have the same shape and size, and the length of their peripheral edges is equal to the length of the circumference of the outer bag 1. In order to attach the top wall 7 and the bottom wall 8 to the main body described above, when the outer bag 1 and the inner cylinder 2 are combined, one of the combined points, for example A, must be placed at the center of one side of the top wall 7. and the top wall 7
If the periphery of the outer bag 1 is sewn along the periphery of the top wall 7, the remaining joining points B, C, and D are sewn to match the remaining three sides of the four sides of the top wall 7. This also applies to the bottom wall 8. The top wall 7 and the bottom wall 8 are preferably made of the same material as the outer bag 1, and the injection tube 9 and its cover 10 and the discharge tube 11 and its cover 12 are also made of the same material as the outer bag 1. It is preferable that it be constructed of materials such as

The transport bag according to the present invention is extremely easy to manufacture compared to conventional transport bags in which partition pieces are provided at each internal corner. In other words, the sewing process for sewing partition pieces to each of the internal corners is difficult from the viewpoint of the handling of sewing flexible sheets together, the setting of the sewing places, and the handling of the sewing machine. It is extremely complicated and time-consuming, and work efficiency is inevitably low. In contrast, with the present invention, it is only necessary to determine four equal dividing points on the circumferences of the inner tube and outer bag, and to determine the four equal dividing points, for example, the outer bag is made square and the inner tube is inserted into it. This will determine the contact point, or simply fold the bag in half and then fold it in half again, so there is nothing difficult about it, and you can join these four equal parts by sewing or gluing them together. Since the main body is constructed by doing so, the work for combining them is simple and easy to handle, and the work efficiency is significantly improved.

In addition, in the case of conventionally known partitions, the partitions provided at the internal corners must be provided with holes through which the stored items can flow, which reduces the strength of the partitions. The fibers of the woven fabric that makes up the partition pieces are exposed at the inner peripheral edge of the flow hole, and these fibers may turn into waste and get mixed into the stored items, damaging the quality of the stored items. However, since the inner cylinder of the present invention does not have a flow hole or a similar structure, the original strength of the inner cylinder can be maintained as it is, and there is no risk of its deterioration. Moreover, since there are no broken parts such as communication holes, there is no fiber waste generated therefrom, so the quality of the stored items will not be impaired. The transport bag of the present invention consists of a simple inner cylinder and an inner and outer part made of a flexible sheet-like material, and the outer bag automatically becomes a rectangular shape just by filling it with stored items. This is because when the stored items are filled, the stored items first accumulate inside the flexible inner cylinder, and then the stored items leak out from below the inner cylinder toward the outer bag. As the accumulation inside the inner cylinder progresses and the contents reach the top of the inner cylinder, the inner cylinder becomes cylindrical, and the contents overflow from the top of the cylinder, causing a gap between the inner cylinder and the outer bag. It will be filled up completely. The space between the inner cylinder and the outer bag is a space surrounded by A and B, B and C, C and D, and D and A, which are the joining points of the inner cylinder and outer bag, To explain one of these spaces, the space surrounded by A and B, the space between A and B in the inner cylinder becomes part of a circle due to the internal pressure of the stored items, but the space between A and B in the inner cylinder becomes part of a circle. The space between A and B is approximately angular. This is because the length between A and B of the outer bag is longer than the length between A and B of the inner cylinder, so the internal pressure of the stored items filled in this space is It is largest at the midpoint between A and B of the bag, becomes smaller as it approaches A and B, and becomes zero at A and B, so it protrudes most outward at the midpoint between A and B, and A In and B, since they are fixed at the same position as the diameter of the inner cylinder, they naturally form a square shape, and this is the same in the other three spaces, so the outer bag is square. In this case, if the circumference of the outer bag is approximately four times the diameter of the inner cylinder, the most preferable rectangular shape is obtained. In this way, the outer bag becomes almost square, and the inner cylinder is inscribed in this square outer bag, maintaining the form of a transport bag, so there is no space between the two during transportation or storage. This is an epoch-making invention that makes it possible to provide transportation bags of the most preferable form, which can be stacked tightly with the least amount of waste, extremely easily, efficiently, and at low cost.

[Brief explanation of drawings]

The accompanying drawings show an example of the implementation of the present invention,
Fig. 1 is a perspective view showing an example of a transportation bag, Fig. 2 is a perspective view showing an example of an outer bag, Fig. 3 is a perspective view showing an example of an inner cylinder, and Fig. 4 is a perspective view showing an example of an inner cylinder inserted into an outer bag. FIGS. 5 and 6 are a side view showing a state in which the outer bag and the inner cylinder are combined, and a plan view showing a location where the outer bag and the inner cylinder are combined. 1... Outer bag, 2... Inner cylinder, 3... Upper end of outer bag, 4... Upper end of inner cylinder, 5... Lower end of outer bag, 6... Lower end of inner cylinder, H
...Length of the outer bag, H'...Length of the inner cylinder, X...Length of the circumference of the outer bag, Y...Diameter of the inner cylinder, A, A', A'', B,
B', B'', C, C', C'', D, D', D''...The combined location of the outer bag and inner cylinder.

Claims (1)

[Claims] 1. A non-porous cylindrical flexible sheet-like material,
It consists of an inner cylinder whose length is shorter than the outer bag, and an outer bag made of a cylindrical flexible sheet-like material whose circumference is approximately four times the diameter of the inner cylinder. When the inner tube is inserted into the inner tube so that the upper and lower ends of the inner tube are located apart from the upper and lower ends of the outer bag, and when the inner tube and the outer bag are combined, the outer bag is made into a square shape. Sewing the part where the inner tube is inscribed in the outer bag,
A prismatic cylindrical transportation bag characterized by forming a prismatic cylindrical shape when assembled by adhesive or other means and filled with contents. 2. The prismatic cylindrical transportation bag according to claim 1, wherein the location where the inner tube is inscribed in the outer bag is a contact point between the inner tube and the outer bag. 3. The rectangular cylindrical shape according to claim 1, wherein the location where the inner cylinder is inscribed in the outer bag is at two points equidistant from the contact point between the inner cylinder and the outer bag, or between these two points. transport bag.