AU2015299917B2

AU2015299917B2 - Container bag

Info

Publication number: AU2015299917B2
Application number: AU2015299917A
Authority: AU
Inventors: Yong Deok Choi
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-08-06
Filing date: 2015-07-29
Publication date: 2018-02-08
Anticipated expiration: 2035-07-29
Also published as: KR101459113B1; AU2015299917A1; WO2016021867A1

Abstract

The present invention provides a container bag comprising: a body part; and a plurality of lifting belts, wherein the body part comprises: a plurality of side wall portions which are provided so as to form an inner space where powders are stored, both side ends of each thereof being mutually connected, and the width of the lower section being formed wider than the width of the upper section so that bending portions are formed on the both side ends; a cover portion which has an inserting tube portion formed in the middle thereof and is connected to the upper ends of the side wall portions; and a floor portion connected to the lower ends of the side wall portions, and wherein the plurality of lifting belts comprise: ring portions which project over the cover portion; binding portions which are respectively connected to both ends of the ring portions and respectively combined along the middle portion of one side wall portion and the middle portion of another side wall portion adjacent thereto; and a lower support portion which is connected to the lower end of each of the binding portions and combined with the floor portion, whereby a container bag of the same size can contain a maximum load amount by maintaining a stable, upright shape when filled with contents, and stability is enhanced when loads are laminated in multiple stages.

Description

(57) Agg:

[gS g 7j|^j

Ol 9. ΐ ti -trwo 2016/021867 Al llllllllllllllllllllllllllllllllllllllllllllllllll^ ^l7} 9999 AT-7] =99-9 9-tJ.

999; 9 99 971199 9-9=-9 91 9 999 99 999 999 999 9999 9> ^99 )9999 FWtMs] Ull°M 99 9 9=1 9 999 999=} 9999 99 999 999=9 99-9=9 99 «199 9 99999 999/} «1999

99=19 971199,9-71

98-9=1,99999 7fls 999 9 999 tfJASI = 999 ΛΤ=1=7-=} , =1 9999 99=19 9999 9991 =19 =2-999,9-71 =2=19=1 9999 99 99=1=1 99=1 999 999 9999,9-71 9 999=1 999 99=1=1 9M 9999 9

7fl=l 99999 9999 9999 99 9999.

199

99 9 ?WI 99-=9=9,

99997} 9^v9 99=1=1 999° [DESCRIPTION] [Invention Title]

CONTAINER BAG [Technical Field]

The present invention relates to a container bag, and more particularly, to a container bag that can accommodate a maximum load capacity with respect to the same size while maintaining a stable upright form at the filling with substances and may enhance stability in stacking upon a multi-stage stacking.

[Background Art]

Generally, a container bag, which is also called a flexible intermediate bulk container (FIBC), a big bag, or a bulk bag, is an industrial container for receiving, transporting, and storing powder materials, such as grains, synthetic resin materials, etc. The container bag is formed of a flexible synthetic resin material to allow convenient reception and withdrawal of powder materials.

In this case, the container bag receives 500 Kg to 2000 Kg substances, such as chemicals, minerals, grains, synthetic resin materials, cement particles, etc. The container bag is transported using a crane or a hoist forklift and stored in a warehouse or is mounted on and transported by a truck. In recent years, the quantity of goods transported increases along with an increase in international transactions. In order to save shipping costs and storage costs, the demand for a container bag with enhanced reception efficiency that may be stably transported or loaded in a warehouse has increased.

FIGS. 1 and 2 are perspective views showing conventional container bags

100 and 200.

As shown in FIGS. 1 and 2, the conventional container bag 100 or 200 include a side wall 110 or 210 that forms an inner space in which substances are received, a cover 120 or 220 that selectively opens or closes an upper portion of the side wall 110 or 210, and a floor 130 or 230 that selectively opens or closes a lower portion of the side wall 110 or 210. In addition, a ring part 140 or 240 formed as a transport rope or belt is provided around the upper portion of the side wall 110 or

210.

Here, when substances are received, the side wall 110 or 210 is sealed in the form of a cylinder or a square pillar. The container bag 100 having the side wall 110 sealed in the form of a cylinder may receive a lot of substances. However, when a plurality of container bags 100 are stored in a container box or a warehouse, there has been a problem of the plurality of container bags 100 being not in close contact with one another to thereby form a spare space, thus increasing an air gap and occupying a large volume.

The container bag 200 having the side wall 210 sealed in the form of a square pillar may have a reduced spare space and a decreased air gap when a plurality of container bags 200 are mounted on a truck or stored in a warehouse. However, when a certain amount or more of substances are received, there has been a problem of a bulging phenomenon in which a central portion 211 of the side wall 210 protrudes outward to occupy a more loading space, which is caused due to the weight of the substances.

Furthermore, when a plurality of container bags 200 are stacked and loaded in multiple stages, there has been a problem of the container bags 200 not being able to maintain their own forms and thus not being stably stacked because the weight of each of the container bags 200 is distributed to the protruding portion 211 of the side wall 210. Thus, when the container bag 200 falls down, there has been a serious problem of a worker being seriously injured or the substances received therein pouring out to be damaged or lost.

2015299917 03 Jan 2018

In addition, in order to solve a problem of a multi-stage stacking being impossible due to the bulging phenomenon and a limited space not being able to be efficiently used, a method of forming a reinforcing part in a vertical or horizontal direction of the side wall 210 has been proposed. However, there has occurred a problem of a load weight being concentrated on a part adjacent to the reinforcing part and the container bag 200 being torn, thus significantly decreasing its durability and also increasing production costs due to the formation of the reinforcing part.

Also, a method of sewing a partition that connects inner side surfaces of the side wall 210 in order to decrease the bulging phenomenon of the side wall 210 has also been proposed. However, foreign materials generated during a process of fabricating the partition can be mixed with substances stored therein, and also an inner skin that protects the substances cannot be used due to the partition. Upon a multi-stage stacking, a connection portion of the partition is easily damaged to decrease stability in stacking.

It is an object of the present invention to substantially overcome or at least ameliorate one or more of the above disadvantages.

It would be preferable for the present invention to provide a container bag that may accommodate a maximum load capacity with respect to the same size while maintaining a stable, upright shape at the filling with substances and may enhance stability in stacking upon a multistage stacking.

An aspect of the present invention provides a container bag including a body including a plurality of side walls provided to form an inner space where powder materials are received, wherein both side ends of each of the plurality of side walls are connected to side ends of other adjacent side walls, and a lower width is formed greater than an upper width to form bending parts on the both side ends, a cover connected to upper ends of the side walls, the cover having an insertion tube formed at a center thereof, and a floor connected to lower ends of the side walls; and a plurality of lifting belts each including a ring part provided to protrude over the

AH26( 14099077_ 1 ):TCW

2015299917 03 Jan 2018 cover, a binding part connected to both ends of the ring part and combined along a center line of one side wall and a center line of an adjacent side wall, and a lower support part connected to a lower end of the binding part and combined to the floor, wherein the binding part is disposed symmetrically to a binding part of another lifting belt with respect to the center of the side wall and combined to an inside surface of the side wall, and the lower support part is disposed to surround a floor surface of the floor; and a connection portion between the binding part and the ring part is interposed and combined between the upper end of the side wall and the cover, and a connection portion between the binding part and the lower support part is interposed and combined between the lower end of the side wall and the floor.

Advantageous Effects

Accordingly, the present invention may provide the following effects.

First, a central portion of each edge of the floor is formed to be bent inward and connected to the side walls. In addition, a lower support part of the lifting belt pulls a central portion of an adjacent edge of the floor in a diagonal direction and supports the floor. Accordingly, a curved portion that is recessed inward is formed along a central line of the side wall, and four virtual pillars are formed in the form of a clover from a center of the body to edges thereof. In this way, the weight of the bag may be distributed to floor surfaces of the four pillars, thus stably accommodating the movement of the upper portion and strongly maintaining an upright form of the body.

Second, the lifting belt distributively supports the weight of substances accommodated in the body through the binding part combined to the side wall and the lower support part combined to the floor and also delivers a lifting force to an upper portion and a lower portion of the body at the same time. Therefore, stability in delivery may be enhanced by minimizing the shaking of the body, and product durability may be improved by preventing a connection portion between the lifting belt and the body from being torn due to the movement of the body.

Third, the lifting belt may pass between the cover and the side wall and between the side wall and the floor and may be repetitively combined upon once sewing, thus allowing components to be strongly and efficiently combined to thereby increase product productivity.

AH26( 14099077_ 1 ):TCW

2015299917 03 Jan 2018

Fourth, through the lifting belt and a central portion of a bent edge of the floor, the body may be maintained in the shape of a square pillar without a separate partition member. In this way, an inner liner that may protect substances accommodated in the body from foreign materials, moisture, etc. may be injected and used, thereby enhancing product storage efficiency.

Description of Drawings

Preferred embodiments of the present invention will now be described, by way of examples only, with reference to the accompanying drawings, wherein:

FIGS. 1 and 2 are perspective views showing conventional container bags.

FIG. 3 is a perspective view showing a container bag according to an embodiment of the present invention.

FIG. 4 is an exemplary view showing a floor of a container bag that is filled with substances according to an embodiment of the present invention.

AH26( 14099077_ 1 ):TCW

FIG. 5 is an exploded view showing a container bag according to an embodiment of the present invention.

FIG. 6 is a perspective view showing a cover of a container bag according to an embodiment of the present invention.

FIG. 7 is a perspective view showing a floor of a container bag according to an embodiment of the present invention.

FIGS. 8A to 8c are cross sectional views showing an aspect in which substances are filled in a container bag according to an embodiment of the present invention.

[Best Mode for Carrying Out the Invention]

The best mode for carrying out the invention will be described below.

[Mode for Carrying Out the Invention]

Hereinafter, a ventilated smoking filter and a method of fabricating the same according to a preferred first embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 3 is a perspective view showing a container bag according to an embodiment of the present invention; FIG. 4 is an exemplary view showing a floor of a container bag that is filled with substances according to an embodiment of the present invention; FIG. 5 is an exploded view showing a container bag according to an embodiment of the present invention; FIG. 6 is a perspective view showing a cover of a container bag according to an embodiment of the present invention; FIG. 7 is a perspective view showing a floor of a container bag according to an embodiment of the present invention; and FIGS. 8A to 8c are cross sectional views showing an aspect in which substances are filled in a container bag according to an embodiment of the present invention.

As shown in FIGS. 3 to 8C, a container bag 300 according to an embodiment of the present invention is formed to include a body 10 and a lifting belt 20.

It is preferable that the container bag 300 be formed of a deformable and flexible material so that the container bag 300 may be folded and stored to minimize the volume when substances such as powder materials are not received. Here, the container bag 300 may be weaved with natural fiber materials, polyvinyl chloride (PVC), or synthetic resin materials (e.g., polypropylene, polyethylene). Thus, the container bag 300 may maintain strength as well as appearance. If necessary, an inner liner (not shown) formed of a synthetic resin material having a water-resistant function may be provided inside the container bag.

Referring to FIGS. 3 to 5, the body 10 includes a plurality of side walls 11 and 12, a cover 13, and a floor 14. Here, the plurality of side walls 11 and 12 are provided to form an inner space where powder materials are received, and side ends 1 lb of the side walls are connected to those of other adjacent side walls.

For example, when the body 10 is provided in the form of a square pillar, the side walls 11 and 12 may be provided as four. One side end of a side wall may be sequentially connected to one side end of another side wall to form a square pillar with opened top and bottom surfaces. It will be appreciated that the side wall may be provided as a single film. In this case, an inner space may be formed by folding an inner side at a certain interval and connecting one side end and the other side end to form a polygonal pillar.

In addition, since each of the side walls 11 and 12 is formed to have a lower width c greater than an upper width b, bending parts 1 Id are formed at the side ends lib. Thus, the inner space of the body 10 may be formed to have a lower crosssection area greater than an upper cross-section area. The side ends 1 lb of the four side walls 11 are mutually connected to form a square pillar having an open top surface and an open bottom surface and having a narrow upper portion and a wide lower portion.

When the bending parts lid are formed at the side ends lib of the side wall 11, each of the bending parts lid may be inclined to connect a side wall at a side of the narrow upper portion and a side wall at a side of the wide lower portion. Here, a portion in which the top end of the bending part 1 Id is connected to an upper side end edge of the side wall and a portion in which the floor end of the bending part lid is connected a lower side end edge of the side wall are shown as being bent. However, the portions may be smoothly curved.

Since the inner space of the body 10 has a wide lower portion and a narrow upper portion, as described above, the weight of substances may be stably supported by the wide lower portion at the filling with the substances, and thus uprightness may be enhanced. Accordingly, by mounting the container bag 300 on a palette with a certain length and width in an automated warehouse, a stable supporting force may be provided upon a multi-stage stacking. Thus, the container bag 300 may be stacked in two or more stages. Also, a larger number of container bags 300 may be stored in a limited space, thus providing an effect of reducing distribution costs.

Furthermore, since the entire weight of the substances accommodated in the body 10 is applied from the narrow upper portion to the wide lower portion along the side ends 1 lb of the side walls 11 and 12 and is distributively supported by the sides of the floor, stability in uprightness is improved. Although the body 10 is formed higher than the related art, the container bag 300 filled with substances does not fall down and may maintain its upright form.

Thus, even when a 1000 kg container bag with a 33.3% increased height or a 1500 kg container bag with a 100% increased height is used instead of a conventional 750 kg container bag, the upright state may be maintained and thus load storage efficiency may be increased. Also, load and delivery efficiency may be remarkably improved by increasing a load capacity that can be delivered at one time and decreasing the number of deliveries.

An inner liner (not shown) that separates and protects the substances received therein from an inner surface of the side wall 11 may be further provided in the body 10. That is, since the body may be kept in the shape of a square pillar through the lifting belts and centers of bent edges of the floor without a separate partition member, the inner liner may be injected into and used in the body 10.

Thus, when the substances are fine particles such as powder materials, the substances may be prevented from being lost through a connection portion between the side walls 11 and 12, and also may be prevented from being contaminated by foreign substances flowing into a gap of the connection port. Accordingly, storage efficiency may be further enhanced.

An insertion part 13a through which the substances composed of powder materials are inserted is formed at the center of the cover 13. The cover 13 is connected to an upper end of the side wall 11. Here, the cover 13 is connected to the upper ends of the side walls 11 and 12 along an external edge to form the top surface of the inner space.

It will be appreciated that the cover 13 may have a polygonal cross section or a circular cross section according to the shape of the body 10. As shown, when the body 10 has a square pillar shape, it is preferable that the cover 13 have a square cross section. In this case, the insertion part 13a may be formed as a circular pillar in which the insertion part 13a is bonded to an edge of a circular opening formed at the center of the cover 13.

It will be appreciated that the insertion part 13a is not limited in shape to the circular pillar and may be formed in various forms. The insertion part 13a may be separately formed and bonded to the edge of the opening of the cover 13. Alternatively, the insertion part 13a may be integrally formed to extend from the edge of the opening of the cover 13.

In detail, the insertion part 13a is a passageway through which the substances flow into the inner space of the body 10. That is, the substances may be inserted into the inner space by brining the insertion part 13a in close contact with a lower end of a supplying means (not shown), such as a funnel, for injecting the substances. In this case, a fixing strap (not shown) may be provided at one side of an outer surface of the insertion part 13a. The inner space may be sealed by filling with the substances and then tying the fixing strap.

In addition, referring to FIGS. 4 and 5, the floor 14 is connected to the lower ends of the side walls 11 and 12. That is, the floor 14 is connected to the lower ends of the side walls 11 and 12 along the external edge to form a bottom surface of the inner space. Here, the floor 14 may have a polygonal cross section or a circular cross section according to the shape of the body 10. As shown, when the body 10 has a square pillar shape, it is preferable that the floor 14 have a square cross section.

In detail, the substances that have been injected into the inner space through the insertion part 13a may be discharged through the insertion part 13a while the body 10 is turned upside down. Alternatively, the substances may be discharged by connecting a discharging part, which is an opening formed at the center of the floor 14. That is, when the substances are injected into the body 10, the discharging part is sealed. When the injected substances are discharged, the substances are discharged to the outside from the body 10 by lifting up the body 10 and opening the discharging part.

Referring to FIGS. 3 to 4, the lifting belt 20 includes a ring part 21, binding parts 22 and 24, and a lower support part 23. Here, respective parts of the lifting belt 20 are classified as the ring part 21, the binding parts 22 and 24, and the lower support part 23 on the basis of functions of the lifting belt 20. It is preferable that the ring part 21, and the binding parts 22 and 24, and the lower support part 23 be integrally formed. That is, the lifting belt 20 may be provided as a strap formed of a synthetic resin. It is preferable that the lifting belt 20 be formed of polypropylene (PP). In this case, the lifting belt 20 may be provided as a ring shape by folding a center part to form a ring at one side and connecting both ends.

Here, the ring part 21 may protrude over the cover 13. That is, the ring part 21 may refer to a part of the lifting belt 20 that protrudes over the cover 13 from the upper end edges of the side walls 11 and 12. For example, the ring part 21 may be formed by folding a middle part of the lifting belt 20 to form a ring and positioning the ring over the cover 13.

Also, the lifting belt 20 may be fixed by combining a lower portion of the ring to the side walls 11 and 12. Both ends of the lifting belt 20 may be disposed at a side of the floor 14 and combined to each other and also with the floor 14 to form the lower support part 23.

In addition, the ring part 21 may have one end connected to an upper end edge of one side wall 11 and the other end connected to an upper end edge of another side wall 12 adjacent to the side wall 11. Preferably, it should be understood that the phrase “one end and the other end of the ring part 21” refers to portions at which the ring part 21 is connected to the binding parts 22 and 24. For example, when the body 10 is provided in a square pillar shape, four side walls 11 and 12 may be provided to form a front surface, a right surface, a back surface, and a left surface of the body 10. In this case, four lifting belts 20 may be provided to form four ring parts 21.

That is, one end of one ring part 21 and the other end of another ring part may be disposed on an upper end of one side wall 11 and may be brought in close contact with each other at the middle of the upper end of the side wall 11. In this case, the ring part 21 may be disposed in the shape of a diamond inside the cover 13.

The body 10 may be lifted up by inserting a lifting device into a gap between a bottom surface of the ring part 21 and a top surface of the cover 13 and putting the lifting device into the ring part 21. In addition, the binding parts 22 and 24 are connected to the ends of the ring part 21 and combined along the center of the side wall 11 and the center of the side wall 12. Here, the binding parts 22 and 24 refer to parts of the lifting belt 20 which are connected to a lower portion of the ring part 21. Two binding parts 22 and 24 are connected to both ends of the ring part 21 in one lifting belt.

In this case, a first binding part 22 connected to one end of the ring part 21 is disposed and combined in a vertical direction along the center of one side wall 11. A second binding part 24 connected to the other end of the ring part 21 is disposed and combined in a vertical direction along the center of another side wall 12 adjacent to the side wall 11 to which the first binding part 22 is combined.

That is, a first binding part 22 of one lifting belt 20 and a second binding part of another lifting belt may be combined to the center of one side wall 11. In this case, it is preferable that a first binding part 22 of one lifting belt and a second binding part of another lifting belt be disposed in close contact with each other with respect to a central line 1 le of the side wall 11.

It will be appreciated that the binding parts of the two lifting belts disposed along the central line lie of the side wall 11 may be combined to the side wall 11 while overlapping each other. It is preferable that outer lines of the lifting belts be aligned along the central line lie and combined to the side wall 11 so that a combination area between the side wall 11 and the lifting belt may be maximized. In this case, it is preferable that a first binding part 22 of one lifting belt and a second binding part of another lifting belt, which are disposed on the side wall 11, be disposed symmetrically with each other.

Here, a combining distance between the binding part 22 and the side wall 11 is provided shorter than a height of the side wall. It is preferable that the combining distance be provided as 85% to 99% of the height of the side wall. In this case, the combining distance denotes a part in which the binding part 22 and the side wall 11 are substantially sewed. It is preferable that the upper end of the side wall 11 and the binding part be not sewed to each other and also the lower end of the side wall 11 and the binding part be not sewed to each other.

When the combining distance is less than 85%, the binding part may not endure the weight of the substances stored in the body and may be separated from the side wall. On the other hand, when the combining distance exceeds 99% and the binding parts are combined between the side wall and the cover or between the side wall and the floor while overlapping each other, penetration portions of a sewing strap may overlap each other, thus reducing a combination strength between the upper end of the side wall and the lower end of the floor.

In addition, the lower support part 23 is connected to lower ends of the binding parts 22 and 24 and also combined to the floor 14. Here, preferably, it should be understood that the lower support part 23 denotes a part of the lifting belt 20 which is connected to the lower ends of the binding parts 22 and 24.

For example, when a folded portion of the lifting belt 20 forms the ring part

21, both ends of the lifting belt 20 are connected to each other and disposed on the floor 14 to form the lower support part 23. It will be appreciated that the folded part of the lifting belt 20 can be disposed on the floor 14 to form the lower support part 23. In this case, the ends of the lifting belt 20 are connected to each other while protruding over the cover 13 to form the ring part 21.

It is preferable that each of lower support parts of four lifting belts be disposed to connect two adjacent sides among the four sides of the floor 14. That is, the lower support part 23 may be disposed to connect the center of one side of the floor 14 with the center of another side adjacent to the one side. In this case, ends of two lower support parts may be disposed in close contact to each other at the center of a side. Preferably, it should be understood that the phrase “ends of the lower support part 23” refers to portions in which the lower support part 23 is connected with the binding parts 22 and 24.

Here, it is preferable that each lower support part be disposed and fixed symmetrically to a lower support part of another lifting belt with respect to the center of each edge of the floor. That is, it is preferable that lower support parts be disposed symmetrically about a virtual line that connects a center of one side edge of the floor with a center of an edge opposite (not connected) to the one side edge.

It will be appreciated that the floor is not limited in shape to a square and can be provided in the form of a rectangle. In this case, in the floor, the lower support parts are mirror-symmetrical to one another with respect to a virtual line that connects centers of a pair of opposite long edges, and the lower support parts are symmetrical to one another with respect to a virtual line that connects centers of a pair of opposite short edges. As described above, upon the up-lifting of the body 10 through the ring part 21, the lifting belt 20 can distributively support the weight of the substances stored in the body 10 through the binding parts 22 and 24 combined to the side walls 11 and 12 and the lower support part 23 combined to the floor 14.

Also, since a lifting force may be delivered to the upper portion and the lower portion of the body 10 at the same time, the shaking of the body 10 can be minimized. Thus, a safety accident or a loss of the substances, which may occur when the body 10 moves, can be prevented, thus enhancing delivery safety. In addition, the weight that has been concentrated on a connection part between the lifting belt 20 and the body 10 may be distributed to prevent the body 10 from being tom. Accordingly, since an allowable tension load of the lifting belt 20 may be increased, a foundation technique for fabricating a large-scale container bag may be provided.

It is preferable that the binding parts 22 and 24 be disposed in close contact to an inner surface of the side wall 11, and the lower support part 23 be disposed to surround a bottom surface of the floor 14.

That is, the binding parts 22 and 24 are combined to the inner space of the body 10 in which the substances are stacked, and the lower support part 23 is combined to the bottom surface of the floor 14 that is in direct contact with a palette or the ground.

Thus, when the container bag 300 is provided in a plurality and disposed in parallel in a horizontal direction, and thus several bodies 10 are in contact with one another, lifting belts 20 may be prevented from being tangled upon the withdrawal of the container bags 300. Accordingly, a binding force between the lifting belt 20 and the body 10 may be prevented from being reduced due to the contact and friction between the lifting belts 20, and product durability may be improved.

In addition, upon the up-lifting of the body 10 through the ring part 21, the body 10 may be stably lifted up by supporting the floor 14 using the entire area of the lower support part 23.

Also, the connection parts between the ring part 21 and the binding parts 22 and 24 may be combined between the upper end of the side wall 11 and the cover 13 while overlapping each other. Also, the connection parts between the lower support part 23 and the binding parts 22 and 24 may be combined between the lower end of the side wall 11 and the floor 14 while overlapping each other.

In detail, edges of the cover 13, and the side walls 11 and 12, and the floor 14 may be combined to one another through a sewing or an adhesive to form the body 10. In this case, the lifting belt 20 may be disposed through a combining part between the cover 13 and the side wall 11 or 12 and a combining part between the side wall 11 or 12 and the floor 14.

Particularly, in the majority of cases, members of the body 10 may be combined to one another, and the body 10 and the lifting belt 20 may be combined to each other, through a sewing. Here, when the members of the body 10 are combined to one another, the combining parts between the members may be combined through once sewing while overlapping each other, and thus the lifting belt 20 may be combined more robustly and efficiently.

It is preferable that a center portion 14b of an edge 14a of the floor 14 be bent inward, and a center portion 1 If of the lower end of the side wall 11 connected with the center portion 14b of the edge 14a of the floor 14 be bent upward. In this case, when the floor 14 and the side wall 11 are combined to each other, a curved portion 42 that is recessed inward from a lower portion of a center of each side surface of the body 10 along an upper side may be formed.

Thus, when the container bag 300 is fdled with the substances, four pillars g are formed toward four sides from the center of the body 10. In this case, the cross section of the body 10 may be formed in the shape of a four-leaf clover, and four virtual pillar shapes may be formed in four directions from the center of the cross section.

Also, it is preferable that the lower support part 23 be disposed to support the floor 14 by connecting the center portion 14b of one side edge of the floor 14 and the center portion of another side edge adjacent to the one side edge 14a in a diagonal direction. Here, the lifting belt 20 is combined along an inner side of the side wall 11 of the body 10 to surround the bottom surface of the floor 14. Accordingly, the lower support part 23 may pull the center portion 14b of the adjacent edge of the floor 14 inward and then may support the floor 14.

That is, the connection parts between the binding parts 22 and 24 and the lower support part 23 may apply pressure to curved portions 42 formed at surfaces of the body 10 in directions of the pillars g to more accurately maintain the recessed shape of the curved portions 42.

Thus, a bulging phenomenon in which a central portion of the body 10 protrudes outward may be prevented. When the container bag 300 is loaded on and stored in a delivery vehicle or a warehouse while entirely maintaining a square pillar shape, an air gap between the container bags 300 may be decreased to provide a lot more reception space in the same volume.

In addition, since the weight of the container bag 300 is distributed to the floor having four virtual pillars formed therein, the movement of the upper portion may be stably accommodated, and thus an upright form may be strongly maintained. Thus, even when the container bag 300 is additionally formed to have a greater height, the uprightness of the container bag 300 may be maintained. Accordingly, a large-scale container bag may be fabricated.

In detail, when the inner space of the body 10 is filled with the substances, the substances m are first piled at the center of the floor 14, and the substances that are piled to a certain height or more flow toward the side wall 11. In this case, when a packaging film formed as a deformable space is filled with the substances, the substances tend to be piled up to the maximum volume while maintaining a certain surface area. Thus, in the center of the side wall, a bulging phenomenon in which a central portion of the side wall entirely intends to be circular may occur in order to secure the maximum area without changing the total length.

Here, since the curved portion 42 that is recessed inward is formed at the center of the side wall 11, the bulging phenomenon may be prevented due to a tensile force such as h. In this way, the center portion 14b of each edge of the floor 14 may be formed to be curved inward, and the center portion 14b of the edge of the floor 14 may be pulled inward and then supported by the lower support part 23.

Thus, the bulging phenomenon may be prevented by pressing the central portion of the side wall of the body 10 inward through the binding parts 22 and 24 and the connection portions between the binding parts 22 and 24 and the lower support part 23 in addition to a tensile force caused by the curved portion 42. Thus, an air gap between bodies 10 disposed in parallel in a horizontal direction may be minimized, and thus storage efficiency may be enhanced.

Here, it is preferable that the lower support part 23 be combined to cover a bottom surface of a protruding part of the floor 14, corresponding to lower portions of the pillars g that are formed at four sides from the center of the body 10. Thus, the protruding part of the floor 14 may be prevented from being in contact with the ground, a palette, or another container bag and from being intensively worn out, and thus production durability may be improved.

It is preferable that each edge of the cover 13 and each edge of the floor 14 have a spare length greater than a width of an end of the side wall 11 combined thereto, and each corner of the cover 13 and each corner of the floor 14 be folded in a cone shape and connected to the side wall 11.

In detail, referring to FIGS. 5 and 6, each edge of the cover 13 may be formed longer than an upper width of the side wall 11, and a spare portion 13b of the edge is folded to one side. The comer of the cover 13 may be connected to the side wall 11 while being folded in a cone shape 13c. In this case, it is preferable that the cover 13 be formed to have a size that can cover the top surface of the inner space while the spare portion 13b is folded.

Also, referring to FIG. 8A, the cover 13 and the side wall 11 are mainly combined through a sewing. The cover 13 is sewed while an outer portion of the cover 13 is bent upward so that the inner surface of the side wall 11 and the bottom surface of the cover 13 are in contact with each other in order to efficiently perform the sewing.

In this case, referring to FIG. 8B, a part that cannot be filled with the substances is formed in an upper portion of the inner space due to a sewed part 41 between the side wall 11 and the cover 13. In this way, as the spare portion 13b is formed at a boundary of the cover 13, the cover 13 may be expanded upward upon the filling with the substances.

In addition, referring to FIG. 8C, as the part that has been folded in the cone shape 13c at the comer of the cover 13 is gradually unfolded, the central portion of the cover 13 may protrude higher than the boundary to form a pyramid shape. In detail, when the substances are powder materials, air is included between particles of the substances with which the inner space is filled. In order to discharge the air to the outside, about seven to ten hours are required according to the weight or volume of the particles.

That is, when the body is levelly filled with the substances such as powder materials, and container bags are stacked in multiple stages, air between the substances of a container bag stacked in a lower stage is discharged to the outside due to the weight of a container bag stacked in an upper stage. Thus, the container bag stacked in the lower stage sinks down. Thus, a container bag stacked in an upper portion of a lower container is not properly supported and thus easily falls down.

In this case, the part that has been folded in the cone shape 13c at the corner of the cover 13 is unfolded and thus the central portion of the cover 13 protrudes higher than the boundary. Thus, the substances may be sufficiently injected in the form of a pyramid. Subsequently, the volume decreased due to the discharge of the inner air is filled with the substances that are sufficiently injected in the form of a pyramid.

Thus, even when container bags are stacked in multiple stages without a process of discharging air between the substances, and thus the air is discharged due to the pressure from a container bag stacked in an upper stage, the upper portion of the body does not sink down. Accordingly, a container bag may be stably stacked above a lower container having a flat top surface.

In addition, referring to FIGS. 5 to 7, each edge of the floor 14 may be 5 formed longer than a lower width of the side wall 11, and a spare portion 14d of the edge is folded to one side. The corner of the floor 14 may be connected to the side wall 11 while being folded in a cone shape 14c. In this case, it is preferable that the floor 14 be formed to have a size that can cover the bottom surface of the inner space while the spare portion 14d is folded.

Also, the floor 14 and the side wall 11 are mainly combined through a sewing.

The floor 14 is sewed while an outer portion of the floor 14 is bent downward so that the inner surface of the side wall 11 and the top surface of the floor 14 are in contact with each other in order to efficiently perform the sewing.

In this case, a part that cannot be filled with the substances is formed in a lower boundary of the inner space due to the sewed part 41 between the side wall 11 and the floor 14. Thus, upon the filling with the substances, the part that has been folded in the cone shape 14c at the comer of the floor 14 may be gradually unfolded to protrude in a convex manner.

Thus, bottom surface parts of the floor 14 corresponding to floor parts of the four pillars protrude downward. The weight applied to the floor 14 is distributed to the comers, and also the distributed weight may be concentrated on the convex part toward the floor. Accordingly, the container bag 300 does not fall down to the left or right and may keep standing up by stably supporting the bottom surface of the container bag 300.

In the ring part 21 of the lifting belt 20, ring-shaped auxiliary lifting belts 30 that engage with and lift up ring parts of other lifting belts disposed adjacent to the ring part 21 of the lifting belt 20 are provided. It is preferable that auxiliary lifting belts 30 be disposed to face each other at one side and the other side of the body 10. 5 Here, the auxiliary lifting belts 30 may engage with two lifting belts disposed at one side of the body 10 and two lifting belts disposed at the other side of the body 10.

When the two auxiliary lifting belts 30 are lifted up, the four lifting belts may also be lifted up along with two auxiliary lifting belts 30 engaging therewith.

That is, when the two auxiliary lifting belts 30 disposed at both sides of the body 10 are lifted, a front side and a back side of the body 10 in which the auxiliary lifting belts 30 are not disposed may be pulled up and lifted by the lifting belts engaging with the auxiliary lifting belts 30.

Thus, a tensile force applied to the body 10 upon the up-lifting is not concentrated on both sides of the body 10, but distributed over the entire outer surface of the body 10. The body 10 may be lifted up by uniformly tightening the outer surface. Accordingly, product durability may be enhanced through the weight distribution.

Furthermore, when it is difficult to lift up the four lifting belts at the same time, the container bag may be stably lifted up without separation of the lifting belt

20 from the body 10 or without losses such as tearing of the body 10 by lifting up only the two auxiliary lifting belts 30 using a lifting apparatus such as a fork lift or a hoist. Accordingly, the present invention may be utilized for various lifting apparatuses and various situations without a separate special apparatus, thus enhancing product compatibility and usability.

It is preferable that each of the auxiliary lifting belts 30 be provided in the shape of a ring that surrounds the ring part 21 of the lifting belt 20 so that it is movable in the ring part 21. Thus, upon the up-lifting through the auxiliary lifting belts 30, a tensile force applied to the lifting belt 20 by the auxiliary lifting belts 30 5 may be uniformly distributed to the binding parts 22 and 24.

As described above, the present invention is not limited to the aforementioned embodiments, and various changes may be made by those skilled in the art without departing from the scope of the invention as defined by the appended claims. Also, the various changes should be understood as still belonging to the scope of the invention.

[Industrial Applicability]

The present invention may be used in the industrial field of container bags for transporting powder materials by providing a container bag that can maintain a stable upright form that allows a multi-stage stacking when filled with substances and also accommodate a maximum load capacity with respect to the same size.

2015299917 03 Jan 2018

Claims

1. A container bag comprising: a body comprising:

a plurality of side walls provided to form an inner space where powder materials are received, wherein each of the plurality of side walls has both side ends connected to side ends of other adjacent side walls and a lower width is formed greater than an upper width to form bending parts on the both side ends;

a cover connected to upper ends of the side walls, the cover having an insertion tube formed at a center thereof; and a floor connected to lower ends of the side walls; and a plurality of lifting belts each comprising:

a ring part provided to protrude over the cover;

a binding part connected to both ends of the ring part and combined along a center line of one side wall and a center line of an adjacent side wall; and a lower support part connected to a lower end of the binding part and combined to the floor, wherein the binding part is disposed symmetrically to a binding part of another lifting belt with respect to the center of the side wall and combined to an inside surface of the side wall, and the lower support part is disposed to surround a floor surface of the floor; and a connection portion between the binding part and the ring part is interposed and combined between the upper end of the side wall and the cover, and a connection portion between the binding part and the lower support part is interposed and combined between the lower end of the side wall and the floor.

2. The container bag of claim 1, wherein:

a center of each edge of the floor is bent inward, and a center of a lower end of a side wall that is connected to the center of the edge of the floor is bent upward; and the lower support part is disposed to connect and support the center of the edge of the floor and a center of another adjacent edge of the floor in a diagonal direction and also is disposed and fixed symmetrically to a lower support part of another lifting belt with respect to the center of the edge of the floor.

AH26( 14099077_ 1 ):TCW

2015299917 03 Jan 2018

3. The container bag of claim 1, wherein:

an edge of the cover and an edge of the floor have a spare length greater than a width of an end of the side wall, and a comer of the cover and a comer of the floor are folded in a cone shape and connected to the side wall.

4. The container bag of claim 1, wherein a combining distance between the binding part and the side wall is provided shorter than a height of the side wall and provided as 85% to 99% of the height of the side wall.

Yong Deok CHOI

Patent Attorneys for the Applicant/Nominated Person SPRUSON & FERGUSON

AH26( 14099077_ 1 ):TCW [Fig. 1] [Figures] [Fig. 2] [Fig. 3] [Fig. 4]

300 [Fig. 5] [Fig. 6] [Fig. 7] [Fig. 8a] [Fig. 8b] [Fig. 8c]