JP6298333B2 - Self-supporting flexible container - Google Patents

Description

  A container bag used for mass transfer of grains is made of a sheet and can be folded, so that the flexible container is called a flexible container. Unlike metal and wooden box containers, flexible containers are crushed by their own weight when the load is empty, making it difficult to put objects inside. Therefore, there is a type in which a support is attached to the bag so that the bag is self-supporting so as not to be crushed even when empty, and the shape as a container is maintained. This is called a self-supporting flexible container. The present invention relates to an improvement of such a type of container bag.

There exists patent document 1 as a prior art example of this field. In this state, four slender bars with high elasticity are bent inside the bag, and the four bars are stretched diagonally, and the bag is stretched outward from the inside at both ends to maintain the shape of the bag in a box shape. The bar can be easily attached to and removed from the bag, and is lightweight, so it is convenient for transportation and storage.
However, in this conventional example, since the bar material is provided inside the bag, it may interfere with the input or discharge of the grain, or the bar may be bent due to the impact of the grain at the time of input. All of them remained in the bottom four corners of the bag, and they were easily sanitized by spoilage and rats.

Patent No.3828266

  The present invention is an improvement of such a conventional example, the equipment for maintaining the shape of the bag is arranged outside the bag to prevent it from getting in the way, and the shape of the bag is improved, It is an object of the present invention to provide a self-supporting flexible container having a strong structure that makes it difficult for cargo to remain at the four corners of the bottom when discharging.

According to a first aspect of the present invention, a bag body having a rectangular tube shape made of a sheet is connected to the sides of the front, rear, left, and right side surfaces via a corner surface that is narrower than the side surface. by, forming a whole excised shape four corners of the square tube, fitted with a strip-shaped struts having rigidity on the outer side of the corner surface in the height direction of the bag body, the band in the corner surface Connecting both sides of the cloth to form a cylindrical column housing part, closing the bottom, while opening the top, inserting the column into the column housing from the open top, the upper end of the column The protrusion is formed integrally with the support so that the protrusion protrudes above the support housing, and a pair of left and right fastening tapes provided on the bag body are wound around the protrusion and fastened. It is fixed a cargo inlet on the upper surface of the bag body , The bottom surface of the openable outlet is accomplished by free-standing FIBC comprising respectively.

According to a second aspect of the present invention, there is provided a bag body having a rectangular tubular shape made of a sheet, with the sides of the front, rear, left, and right side surfaces passing through a corner surface that is narrower than the side surface. by connecting, to form a whole excised shape four corners of the square tube, fitted with a strip-shaped struts having rigidity in the height direction of the bag body on the outside of the corner surfaces, the corner surfaces The both sides of the woven fabric are connected to form a cylindrical column housing portion, the bottom portion is closed, while the upper portion is opened, and the column is inserted into the column housing portion from the opened upper portion, and the column A protrusion protruding upward from the support housing is formed integrally with the support, and a pair of left and right fastening tapes provided on the bag body are wound around the protrusion and fastened. to fix the protruding portion, in the outer four side surfaces of the bag body A rigid strip-shaped reinforcement is attached in the width direction of the bag body, and a load inlet is provided on the top surface of the bag body, and a discharge opening that can be opened and closed on the bottom surface. Achieved.

In a preferred embodiment of the present invention as set forth in claim 3, the reinforcing rods are attached along the opening edge of the inlet of the bag body, four corner portions of opposing inlet is diagonally by tensioning cord It is concluded to .

In a preferred embodiment of the present invention as set forth in claim 4, a cylindrical scattering prevention cover is continuously provided at the opening edge of the charging port of the bag body, and the fastening string is provided along the edge of the cover opening at the upper end thereof. Is attached and the cover opening is configured to be closed in a drawstring manner.

In a preferred embodiment of the present invention as set forth in claim 5, a gripping portion is attached to the center of the outside of the support housing .

In a preferred embodiment of the present invention as set forth in claim 6, the strut is constituted by a rectangular hollow plastic structural plate .

In a preferred embodiment of the present invention as set forth in claim 7, a rod-shaped core member is inserted into the hollow portion of the hollow plastic structural plate .

According to the first aspect of the present invention, since the sheet- shaped square tube-shaped bag body is formed in a shape in which the four corners of the square tube are cut out as a whole, there is an effect that the cargo hardly remains at the bottom corners inside the bag body. When the cargo is a grain, it remains unsanitary if it remains in the bag, and it is unsanitary because of the present invention. However, according to the present invention, the grain hardly remains, and there is no such inconvenience. In addition, since the struts are attached to the outside of the corner surface in the height direction of the bag body, the struts not only interfere with loading and unloading of the load, but these struts maintain the shape of the bag body well even when empty This has the effect that it is easy to load the load.
In addition, since the column is inserted into the column accommodating portion formed on the corner surface, it is easy to attach the column and to easily replace the broken column.
In addition, a protruding part that protrudes above the band plate housing part is integrally formed at the upper end of the support column, and the protruding part is fixed by winding a pair of right and left fastening tape around it, so that the support column can be securely attached to the support column receiving part. The column can be accommodated and the column does not come out of the column accommodating part during use.

In the second aspect, in addition to the function and effect of the first aspect, the reinforcing body is attached in the width direction of the bag body at the outer center of the four side surfaces of the bag body. In cooperation with, the bag is kept in good shape so that it does not collapse when empty. The larger the bag and the larger the bag, the greater the self-supporting effect of this reinforcement.
In addition, since the column is inserted into the column accommodating portion formed on the corner surface, it is easy to attach the column and to easily replace the broken column.
In addition, a protruding part that protrudes above the band plate housing part is integrally formed at the upper end of the support column, and the protruding part is fixed by winding a pair of right and left fastening tape around it, so that the support column can be securely attached to the support column receiving part. The column can be accommodated and the column does not come out of the column accommodating part during use.

  In Claim 3, after attaching a reinforcing rod along the opening edge of the inlet of the bag body, the opposite corners of the inlet are fastened diagonally with a tension string, so that the inlet remains open. It has the effect of keeping the shape correct and making it easier to load cargo.

  According to the fourth aspect of the present invention, since the cylindrical scattering prevention cover is continuously provided at the opening edge of the insertion opening of the bag body, the entire opening is covered with the scattering prevention cover by closing the cover opening in a drawstring manner with a fastening string. Can do. For this reason, even if the load is fully accommodated near the insertion port, there is an effect that the load is not scattered by wind or vibration or spilled out of the bag body during the transfer of the bag.

According to the fifth aspect of the present invention , the grip portion is attached to the center of the outer side of the support housing, so that the bag body can be easily folded by holding the grip portion.

According to the sixth aspect of the present invention , since the support column is a rectangular hollow plastic structural plate, there is an effect that it is lightweight and rigid.

According to the seventh aspect , since the rod-shaped core material is inserted into the hollow portion of the hollow plastic structural plate, there is an effect that the strength of the support is further improved.

Overall view showing an outline of a self-supporting flexible container according to an embodiment of the present invention Plan view showing the main part of FIG. Fig. 1 is a plan view showing the tension strap in use FIG. 3 is a plan view for explaining how to use the tension string of FIG. Overall view showing the load loaded on the flexible container in Fig. 1 FIG. 5 is an enlarged sectional view taken along line AA in FIG. Front view of the flexible container shown in Fig. 1 loaded with cargo Front view of the FIBC outlet shown in Fig. 7 Explanatory drawing of the process of inserting a column into the column container of the flexible container shown in FIG. Explanatory drawing of a state in which a support is inserted in the process of FIG. FIG. 10 is an enlarged cross-sectional view taken along line BB in FIG. The front view of the support | pillar accommodating part of embodiment different from FIG. Fig. 1 is an enlarged view of the upper slope before fixing the post attached to the flexible container shown in Fig. 1. 13 is an enlarged view of the upper slope after fixing the column of FIG. Sectional drawing which follows the DD line of FIG. Cross-sectional view of the inlet when the anti-scattering cover of Fig. 1 is folded and fully opened FIG. 1 is a plan view showing a state in which a plurality of flexible containers of FIG. 1 are loaded on a truck bed.

Next, an embodiment of the present invention will be described.
Reference numeral 1 denotes a bag body, which is made of a soft and foldable sheet such as a woven fabric or a film, and may have numerous holes or no holes such as a mesh.
The capacity is at least several hundred liters, and the larger one is about 2000 liters. If the bag is fully filled, the total weight will be several hundred kilograms or more, and if the capacity is 1600 liters, it will be 1 ton. The type of cargo is not limited as long as it is cereal grains, wood chips, sand, pebbles, etc. The shape is almost cubic and the length of one side is about 90 cm to 110 cm.

Reference numeral 2 denotes a side surface surrounding the front, rear, left and right of the bag body 1 and is connected in a cylindrical shape via a corner surface 3 between the vertical sides. The corner surface 3 is narrower than the side surface 2 and is entirely strip-shaped. For this reason, the bag body 1 has a shape in which the four corners of the rectangular tube are cut out.
This characteristic shape is evident in FIG. FIG. 2 is a schematic plan view of the bag body 1 and shows a state in which the inside of the bag body 1 is viewed from the opening 4 on the opened upper surface. Reference numeral 5 denotes a bottom surface, and 6 denotes a discharge port.

  A column 7 is attached to the corner surface 3 along the outside. The column 7 is in the form of a strip having rigidity, and is preferably a hollow plastic structure plate formed by an integral extrusion method. The hollow plastic structural board is also commonly referred to as Pradan (plastic corrugated cardboard), and is widely used for logistics and the like as an alternative to the plywood board. The properties are lightweight, tough and excellent in buffering properties. As shown in FIG. 11, the cross-sectional structure is a structure in which two front and back thin plates are connected by parallel ribs, and thereby has a number of hollow portions 7a in the vertical direction. This is cut to a certain width to form a belt-like plate to form the column 7. If a plastic rod-shaped core member 8 is inserted into the hollow portion 7a, the hollow portion 7a is further strengthened. If the thickness of the core material 8 is formed close to the inner diameter of the hollow portion 7a, the core material 8 can be fixed to the support column 7 simply by being inserted, and there is no need for assembling.

  Reference numeral 9 denotes a band cloth, which is connected by sewing both sides to a corner surface, thereby forming a cylindrical column accommodation portion 10 in which the column 7 is accommodated. The bottom part of the support column accommodating part 10 is permanently closed by sewing or closed with a tape 11 with a hook-and-loop fastener so as to be freely opened and closed. The tape 11 also serves to reinforce the corners of the bag body 1.

Reference numeral 12 denotes a protrusion formed integrally with the support 7 at the upper end of the support 7, which protrudes above the support 10 (FIG. 10). Reference numerals 13 and 14 denote a pair of left and right fastening tapes sewn on the bag body 1, which are wound around the protruding portion 12 and fastened by a surface fastener. Thus, the support column 7 is attached in the height direction of the bag body 1 so as not to come off from the support column accommodating portion 10 in an unsteady manner.
Reference numeral 15 denotes a protruding portion covering cloth having substantially the same width as the protruding portion 12, the proximal end side being fixed to the bag body 1, and the opposite side being a free end. This covers the entire upper end surface of the projecting portion 12, and the left and right fastening tapes 13 and 14 are wound from above (FIG. 14). As a result, it is possible to prevent the upper end surface of the protruding portion 12 from being exposed, and to reliably prevent grains and the like from entering the hollow portion.
Further, 16 and 17 are a pair of upper and lower fastening tapes sewn on the bag body 1,
Of these, the upper fastening tape 17 has a proximal end fixed to the inside of the insertion port 4, and the free end of the upper fastening tape 17 extends to the lower fastening tape 16 beyond the splash prevention cover 24 in the folded state. Overlap and fasten with hook and loop fasteners (FIG. 16). In this way, the scattering prevention cover 24 is bundled by the upper and lower fastening tapes 16 and 17 and is kept fully open.

  Reference numerals 18a and 18b are tension strings omitted in FIG. 2, and in cooperation with the reinforcing rod 21 (FIG. 6) attached along the opening edge of the input port 4, hold the input port 4 in an open state. The ends of the tension straps 18a and 18b are fixed to the four corners of the insertion port 4, and are fastened diagonally when the cargo is loaded, and when the bag body 1 is folded, as shown in FIG. Disconnect.

21 is a tape-like gripping part attached to the center of the outer side of the column housing part 10, and if this is held, the large bag body 1 can be easily folded and convenient.
Reference numeral 22 denotes a reinforcing body in which the supporting column housing portion 10 is attached to the center of the side surface 2, which is constituted by a hollow plastic structural plate similar to the supporting column 7, and is stored in the reinforcing member storing portion 23 similar to the supporting column housing portion 10. Install in the width direction of 10. The reinforcing body 22 not only can reinforce the side surface 2, but also maintains the shape well so that the bag does not collapse when empty.
Since the bag body 1 as a whole has a shape in which the four corners of the rectangular tube are cut out, when the bag body 1 is carried by the truck T, the bag body 1 can be stacked side by side with no gap and more efficient than the cylindrical one. There is an effect that it is good (FIG. 17).

  24 is an anti-scattering cover continuously provided at the opening edge of the loading port 4 and is folded over the opening edge of the loading port 4 so as not to interfere with loading, but when loading is completed, the upper and lower fastening tapes 16, 17 1 is unwound and stretched upward as shown in FIG. 1, and further, the fastening string 25 attached along the edge of the cover opening is squeezed to close the cover opening in a purse-like manner (FIG. 5). As a result, it is possible to prevent grains and the like from being blown away by wind or spilling out due to vibration during transfer even when the paper is fully loaded.

Reference numeral 26 denotes a hanging strap, which is connected to the upper four corners of the bag body 1 via a connecting ring 27 to be paired on the left and right sides.
At this time, the tubular discharge port 6 that is folded and closed is covered with a discharge port pressing cover 28 provided on the bottom surface, and closed so that the discharge port 6 does not open due to heavy pressure of the load (FIG. 7).
When discharging the load, the hook-and-loop fastener 29 of the discharge port presser cover 28 is peeled off to open the discharge port 6, and the load is taken out by its own weight.

1 is a bag body 2, a side surface 3, a corner surface 4, an input port 5, a bottom surface 6, a discharge port 7, a support column 8, a core material 9, a strap 10, a support column receiving portion 12, and protruding portions 13, 14. The fastening tapes 16 and 17 are the upper and lower fastening tapes 18a and 18b, the tension string 20, the connector 21, the gripping part 22, the reinforcing body 23, the reinforcing body accommodating part 24, the anti-scattering cover 26, the hanging string 28, and the outlet cover.

Claims (7)

The bag body forms a rectangular tubular steel sheets, by connecting the sides each other of the four sides of the front, rear, left and right through a narrow corner surface width than side, were excised four corners of the square tube the entire Formed into a shape,
Attaching the strip-shaped struts having rigidity on the outer side of the corner surface in the height direction of the bag body,
Connect the both sides of the woven cloth to the corner surface to form a cylindrical support column, close the bottom, open the top, and insert the support into the support column from the open top And
A protrusion protruding above the support housing is formed integrally with the support on the upper end of the support, and a pair of left and right fastening tapes provided on the bag body are wound around the protrusion to be fastened. And fixing the protrusion
A self-supporting flexible container with a loading port on the top of the bag body and an openable and closable outlet on the bottom. The bag body forms a rectangular tubular steel sheets, by connecting the sides each other of the four sides of the front, rear, left and right through a narrow corner surface width than side, were excised four corners of the square tube the entire Formed into a shape,
At the outside of the corner surface, a strip-shaped support column having rigidity is attached in the height direction of the bag body,
Connect the both sides of the woven cloth to the corner surface to form a cylindrical support column, close the bottom, open the top, and insert the support into the support column from the open top And
A protrusion protruding above the support housing is formed integrally with the support on the upper end of the support, and a pair of left and right fastening tapes provided on the bag body are wound around the protrusion to be fastened. And fixing the protrusion
At the center of the outside of the four side surfaces of the bag body, a rigid strip-shaped reinforcing body is attached in the width direction of the bag body,
In addition, a self-supporting flexible container that has a loading port on the top surface of the bag body and a discharge port that can be opened and closed on the bottom surface. The self-supporting flexible container according to claim 1 or 2 , wherein a reinforcing rod is attached along the opening edge of the charging port of the bag body, and the opposite four corners of the charging port are diagonally fastened with a tension string. . A cylindrical scattering prevention cover is continuously provided at the opening edge of the charging opening of the bag body, and a fastening string is attached along the opening edge of the cover opening at the upper end to close the cover opening in a purse-like manner. The self-supporting flexible container according to any one of claims 1 to 3. The self-supporting flexible container according to any one of claims 1 to 4, wherein a gripping portion is attached to an outer center of the support housing. Freestanding FIBC according to any one of claims 1 to 5, characterized in that the strut is constituted by a hollow plastic structure plate rectangle. The self-supporting flexible container according to claim 6, wherein a rod-shaped core member is inserted into a hollow portion of the hollow plastic structural plate.