Foldable container

Abstract

The invention relates to a foldable container which comprises a box body and a lining bag, the box body is provided with a base, a pair of opposite first side plates and an adjacent pair of opposite second side plates, the first side plates and the second side plates are hinged to the base and can be folded relative to the base, and the foldable container is characterized in that the lining bag has a folded state, and the lining bag can be folded relative to the base. The lining bag is arranged in the box body in the folding state and is operably limited in the box body by the first side plate and / or the second side plate which are / is folded relative to the base; the lining bag can be transported and turned over along with the folded box body, and the step of laying the lining bag by a customer can be reduced.

Description

Technical Field

[0001] This invention relates to the field of logistics container technology, and more specifically to a foldable container. Background Technology

[0002] Collapsible containers significantly reduce space usage when empty, offering better cost advantages in warehousing and return logistics compared to non-collapsible containers. Therefore, more and more industries are seeking collapsible containers to replace non-collapsible ones; for example, in the liquid packaging sector, collapsible IBCs (Intermediate Bulk Containers) are gradually replacing integrated tonne containers. A typical collapsible IBC consists of a base, two pairs of side panels, and a lid. One side panel also has a small door that can be opened outwards, allowing workers to easily enter the container for operations. When the container is folded, the first folded side panel roughly aligns with the base's bearing surface, and then the remaining side panels fold sequentially, creating a folded state where the length and width remain the same but the height is reduced. This smaller volume configuration brings various logistical and warehousing benefits.

[0003] When transferring liquids, an inner liner bag needs to be laid inside the IBC (Integrated Circuit Breaker). Currently, the structure of the inner liner bag used in IBCs generally includes an inner liner bag body with a filling port and a drain port, which are welded to the inner liner bag body. The existing liquid filling method involves folding the inner liner bag and placing it inside the unfolded IBC, then filling the inner liner bag through the filling port. This method requires the customer to lay additional inner liner bags on-site, and at least two workers are needed during the filling process to assist in adjusting the position of the liner bag to prevent problems such as incomplete filling. Summary of the Invention

[0004] The purpose of this invention is to provide a foldable container with an inner lining bag that can be transported and rotated together with the box.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A collapsible container includes a box body and an inner liner bag. The box body has a base, a pair of opposing first side panels, and an adjacent pair of opposing second side panels, both of which are hinged to the base and foldable relative to the base. The inner liner bag has a folded state, is placed in the box body in the folded state, and is operably confined within the box body by the first and / or second side panels folded relative to the base.

[0007] In one embodiment, when both the first side panel and the second side panel are folded relative to the base, there is a gap between the lower first side panel or the second side panel and the base, and the inner lining bag is located within the gap in the folded state.

[0008] In one embodiment, the bottom of the box is provided with a drain port, the inner liner bag is provided with a discharge port, and the discharge port of the inner liner bag is located inside the drain port.

[0009] In one embodiment, the inner lining bag has multiple folds in the folded state, the inner lining bag is located inside the box, at least one of the multiple folds is fixed to a corresponding first side panel or second side panel, and the folds are configured to be able to unfold or fold with the first side panel or second side panel.

[0010] In one embodiment, the inner lining bag is configured to have a first fold, a second fold, a third fold, and a fourth fold, wherein the first fold, the second fold, and the third fold are respectively connected to different sides of the fourth fold;

[0011] The fourth folding portion is fixed to the base, and the first folding portion and the third folding portion are respectively fixed to a pair of first side plates or to a pair of second side plates.

[0012] In one embodiment, the inner liner bag has a front and a bottom surface disposed opposite to each other, and the inner liner bag further includes a filling port and a discharging port, both of which are disposed on the bottom surface of the inner liner bag. The filling port is disposed on the second fold, and the discharging port is disposed on the first fold or the third fold.

[0013] In one embodiment, the filling port is located at the end of the second fold away from the fourth fold.

[0014] In one embodiment, the second fold includes a first portion connected to the fourth fold and a second portion connected to the first portion, the filling port being located in the second portion, and in the folded state, the second portion being located above the first portion, with the front of the second portion facing outwards.

[0015] In one embodiment, the collapsible container further includes an inner liner support located on top of a pair of first side panels or a pair of second side panels, wherein a second portion of the second fold is operably positioned on the inner liner support.

[0016] In one embodiment, the area of ​​the first portion is equivalent to that of the fourth fold.

[0017] In one embodiment, the discharge port is located near the bottom where the first fold and the fourth fold connect, or the discharge port is located near the bottom where the third fold and the fourth fold connect.

[0018] In one embodiment, the fourth fold is rectangular in shape, and the first fold and the third fold are connected to two sides of opposite sides of the rectangle. In the folded state, the bottom surfaces of the first fold and the third fold face outward.

[0019] In one embodiment, both the first fold and the third fold include a third part and a fourth part. In the folded state, the third part is located below the second fold, the fourth part is located above the second fold, and the bottom surface of the fourth part faces outward. The discharge port is located in the fourth part.

[0020] In one embodiment, the folded portion is fixed to the corresponding first side plate or second side plate by double-sided adhesive.

[0021] The present invention, employing the above-described technical solution, has the following advantages: the inner liner bag of the foldable container provided by the present invention is placed in a folded state inside the box and is operably confined within the box by side plates folded relative to the base, allowing the inner liner bag to be transported and handled together with the folded box. This eliminates the need for customers to lay the inner liner bag, and during filling, the inner liner bag can be fully filled without manual adjustment, greatly reducing labor costs. Attached Figure Description

[0022] Figure 1 A schematic diagram of the box structure of the collapsible container is shown.

[0023] Figure 2 A schematic diagram is shown of the inner liner bag folded in the first manner unfolding inside the box to begin filling.

[0024] Figure 3 A schematic diagram of the inner lining bag of the first structure is shown.

[0025] Figure 4 A schematic diagram of the second type of lining bag is shown.

[0026] Figure 5 A schematic diagram of the third type of liner bag is shown.

[0027] Figure 6 A schematic diagram of the fourth type of lining bag is shown.

[0028] Figure 7 A schematic diagram shows the folded inner pocket inside the box.

[0029] Figure 8 A cross-sectional view of the collapsible container after it has been folded is shown.

[0030] Figure 9 A schematic diagram of the fifth type of lining bag is shown.

[0031] Figure 10 A schematic diagram is shown of the inner lining bag folded in the first manner unfolding inside the box.

[0032] Figure 11 A schematic diagram showing the crease location of the inner lining bag folded in the first manner is shown.

[0033] Figure 12 This diagram illustrates the first step of folding the inner lining bag along the crease in the first manner.

[0034] Figure 13 The diagram illustrates the second step of folding the inner lining bag along the crease in the first manner.

[0035] Figure 14 The diagram illustrates the third step of folding the inner lining bag along the crease in the first manner.

[0036] Figure 15 The diagram illustrates the fourth step of folding the inner lining bag along the crease in the first manner.

[0037] Figure 16 The diagram illustrates the fifth step of folding the inner lining bag along the crease in the first manner.

[0038] Figure 17 The diagram illustrates the sixth step of folding the inner lining bag along the crease in the first manner.

[0039] Figure 18 The diagram illustrates the seventh step of folding the inner lining bag along the crease in the first manner.

[0040] Figure 19 The diagram illustrates the eighth step of folding the inner lining bag along the crease in the first manner.

[0041] Figure 20 The diagram illustrates the ninth step of folding the inner lining bag along the crease in the first manner.

[0042] Figure 21 The diagram shows the structure of the inner lining bag after it has been folded along the crease in the first manner.

[0043] Figure 22 A schematic diagram showing the crease location of the inner lining bag folded in the second manner is shown.

[0044] Figure 23 This diagram illustrates the first step of folding the inner lining bag along the crease in a second manner.

[0045] Figure 24 This diagram illustrates the second step of folding the inner lining bag along the crease in a second manner.

[0046] Figure 25 The diagram illustrates the third step of folding the inner lining bag along the crease in a second manner.

[0047] Figure 26 A schematic diagram of the structure of the inner lining bag after it has been folded along the crease in the second manner is shown.

[0048] Figure 27 A schematic diagram is shown of the inner lining bag unfolded inside the box when folded in the second manner.

[0049] Figure 28 A schematic diagram is shown of the inner liner bag folded in the second manner unfolding inside the box to begin filling.

[0050] Figure 29 A schematic diagram shows the inner lining bag folded in the first manner and placed inside the box.

[0051] Figure 30 A cross-sectional view is shown of the inner lining bag folded in the first manner and placed inside the box.

[0052] Figure 31 A schematic diagram shows an inner lining bag folded in the first manner placed inside a box, with double-sided tape securing it inside the box.

[0053] Figure 32 A schematic diagram is shown showing the fold of the inner lining bag folded in the first manner and its fixing to the corresponding side panel.

[0054] Figure 33 A schematic diagram is shown showing the folds of the inner lining bag as the side panels fold.

[0055] Figure 34 A schematic diagram of the inner lining bag inside the folded box is shown.

[0056] Figure 35 A schematic diagram shows the inner lining bag unfolding together with the side panels of the box. Detailed Implementation

[0057] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative of the essential spirit of the technical solution of the present invention.

[0058] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0059] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0060] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0061] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0062] In the following description, in order to clearly demonstrate the structure and working method of the present invention, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0063] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0064] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0065] This invention provides a foldable container comprising a box body and an inner liner bag, wherein the box body is a foldable IBC (Integrated Box Bag) having a base, a pair of opposing first side panels, and an adjacent pair of opposing second side panels, both the first and second side panels being hinged to the base and capable of folding relative to the base. See also Figure 1 and Figure 2 In this embodiment, the box includes a base 1, a pair of opposing first side panels 2, and a pair of opposing second side panels 3. The first side panels 2 and second side panels 3 are adjacent to each other and, in an upright state, define the internal volume together with the base 1. Preferably, the first side panels 2 and second side panels 3 are made of a high-strength material such as high-strength plastic. Typically, the length of the first side panel 2 is shorter than the length of the second side panel 3 to form a roughly cuboid shape. Therefore, the first side panel 2 is also referred to as the short side panel, and the second side panel 3 as the long side panel. However, it should be understood that the first side panels 2 and second side panels 3 can also be of the same length to form a square box. The bottom ends of the first side panels 2 and second side panels 3 are connected to four edges on the base 1 via a hinge structure. One pair of opposing edges of the four edges is provided with an upward-facing guard 4, the height of which is approximately equal to the thickness of the side panels provided on the adjacent pair of edges. This height of the guard 4 defines a space for accommodating adjacent side panels folded onto the base 1. Thus, the first side panels 2 and second side panels 3 can be folded successively over the base 1, placing the box in a folded state.

[0066] See Figures 3-6 The inner liner bag 5 includes an inner liner bag body 51, a filling port 52, and a discharging port 53. The inner liner bag body 51 is formed by sealing and welding a front piece and a rear piece around its perimeter. The main welding lines of the inner liner bag are formed along the perimeter of the inner liner bag body 51. The front and rear pieces are essentially rectangular or approximately rectangular flexible sheets, such as polygons formed by beveling the four corners of a rectangle. The front and rear pieces are typically made of plastic. The filling port 52 and the discharging port 53 are sealed to the inner liner bag body. Because the inner liner bag 5 is made of a flexible sheet material, it can be folded to reduce its volume for easy storage and handling. It should be understood that the positions of the filling port 52 and the discharging port 53 can be set according to actual conditions, for example... Figure 3 The filling and discharging ports are both located on the front of the inner liner bag. For example... Figure 4 The filling port is located on the front of the inner liner bag, and the discharge port is located on the bottom of the inner liner bag. For example... Figure 5 The discharge port is located on the front of the inner liner bag, and the filling port is located on the bottom of the inner liner bag. For example... Figure 6Both the filling port and the discharge port are located on the bottom surface of the inner liner bag. Additionally, it should be understood that the inner liner bag 5 may also have only one opening, which can serve as both a filling port and a discharge port. When there is only one opening, it can be located at either the filling port 52 or the discharge port 53.

[0067] The inner lining bag 5 is folded so that its area is roughly the same as the bottom surface of the box. See [reference needed]. Figures 7-8 When the inner lining bag 5 is placed in the box in a folded state, it is operably confined within the box by the first side plate 2 and / or the second side plate 3 folded relative to the base, so that the inner lining bag 5 can be transported and moved together with the box. Figure 8 The diagram shows the two shorter side panels folded before the two longer side panels, thus securing the inner lining bag 5 by the shorter side panels. It should be understood that if the longer side panels were folded before the shorter side panels, the inner lining bag 5 could also be secured by the shorter side panels. See also... Figure 8 When both the first and second side panels are folded relative to the base, that is, when the box is folded, there is a gap between the lower side panel and the base, and the inner lining bag 5 is located within the gap in a folded state. That is, when the box is folded, a space for accommodating the inner lining bag is formed between the lower side panel and the base. This space can prevent the folding of the side panel from being affected by the presence of the inner lining bag.

[0068] The distance between the lower side panel and the base can be achieved by the height difference between the side panel hinged to the base and the base. When the hinge position between the side panel and the base is fixed, assuming the height of this distance is L1, the height difference between the hinge axis of the lower side panel and the base when folded is L2, and the thickness of the lower side panel is L3, then L2≥L1+1 / 2L2 is satisfied.

[0069] When the hinge between the side panel and the base is movable, that is, the hinge between the side panel and the base can float. See also Figure 1 Since the guard edge 4 of the base 1 has a certain height, and the hinge structure of the second side plate 3 is movably hinged to the guard edge 4, the spacing can be achieved by the floating distance of the second side plate 3 on the guard edge 4. That is, when the box is folded, the space occupied by the inner lining bag 5 can be provided by the floating of the second side plate 3 on the guard edge 4.

[0070] See Figure 9 and Figure 10The filling port 52 and the discharge port 53 are both located on one side of the bottom surface of the inner liner bag. The inner liner bag 5 is configured to have a first fold 501, a second fold 502, a third fold 503 and a fourth fold 504 by a folding operation. The first fold 501, the second fold 502 and the third fold 503 are respectively connected to different sides of the fourth fold 504. The filling port 52 is located in the second fold 502 and the discharge port 53 is located in the first fold 501. It should be understood that the discharge port 53 may also be located in the third fold 503.

[0071] The fourth folding section 504 corresponds to the base 1. The fourth folding section 504 is folded into a rectangular or approximately rectangular shape with an area roughly the same as the base 1. The first folding section 501 and the third folding section 503 are connected to the two opposite sides of the rectangle, with the bottom surfaces of the first and third folding sections facing outwards, so that the discharge port 53 corresponds to the drain port 6 on the casing. See also... Figure 2 In this embodiment, the drain outlet 6 of the box body is located at the base edge corresponding to one of the short side plates. Since the drain outlet 53 is located on the first fold 501 or the third fold 503, the first fold 501 or the third fold 503 corresponds to a pair of first side plates 2. It should be understood that if the drain outlet is located on the long side plate, the first fold 501 or the third fold 503 corresponds to a pair of second side plates 3. Preferably, the drain outlet 53 is located near the bottom where the first fold 501 connects to the fourth fold 504, or near the bottom where the third fold 503 connects to the fourth fold 504, so that the position of the drain outlet 53 of the inner lining bag 5 corresponds to the drain outlet 6 on the box body after folding.

[0072] The filling port 52 is located at the end of the second fold portion 502 away from the fourth fold portion 504, allowing the filling port 52 to be positioned at the opening of the box for convenient filling of the inner liner bag. Preferably, the second fold portion 502 includes a first portion 5021 connected to the fourth fold portion 504 and a second portion 5022 connected to the first portion 5021. The filling port 52 is located in the second portion 5022. When folded, the second portion 5022 is positioned above the first portion 5021, with its front facing outwards. At this time, the filling port 52 is folded towards the first portion 5021, which can cover or partially cover the filling port 52, thus preventing contamination to a certain extent. More preferably, the area of ​​the first portion 5021 is comparable to the area of ​​the fourth fold portion 504.

[0073] See Figures 11-21 , Figures 11-21 The first folding method of the inner lining bag 5 is shown, through which the various folds described above can be obtained. For example... Figure 11As shown, the inner liner bag body 51 has a first crease 511 extending along the length direction, and a second crease 512 and a third crease 513 extending along the width direction and spaced apart. To better show the front and bottom surfaces of the inner liner bag 5, two bottom markings 54 are provided on the bottom surface of the inner liner bag 5. These two bottom markings 54 are located near two corners on the side away from the filling port 52. In the figure, if the bottom marking 54 is a dashed line, it indicates that the marking is located on the back of the area shown and cannot be directly observed from the viewpoint in the figure; if it is a solid line, it indicates that the marking is located on the front of the area shown and can be directly observed from the viewpoint in the figure.

[0074] It also includes two fifth creases 515 extending from the intersection of the first crease 511 and the second crease 512 toward one edge of the width of the inner liner bag, and two sixth creases 516 extending from the intersection of the first crease 511 and the third crease 513 toward the other edge of the width of the inner liner bag. The two fifth creases 515 and the two sixth creases 516 are symmetrically arranged along the first crease 511. It also includes a seventh crease 517 extending along the length direction, located on the side near the filling port 52.

[0075] like Figure 12 and Figure 13 As shown, first fold along the second crease 512 and the third crease 513, then fold inwards to form... Figure 13 The shape shown is such that the bottom surface of the corresponding part of the inner lining bag faces outwards. For example... Figure 14 As shown, fold inwards approximately 90° along the first crease 511, dividing the inner lining pocket into two roughly vertical sections. Figure 15 and Figure 16 As shown, the two sixth creases 516 and the first crease 511 form two triangular faces, defined as face A and face B respectively. Folding outwards along the two sixth creases 516 makes face A and face B approximately on the same plane. Simultaneously, the two fifth creases 515 and the first crease 511 also form two triangular faces, defined as face C and face D respectively. Folding outwards along the two fifth creases 515 makes face C and face D approximately on the same plane. Figure 17 As shown, through Figure 15 and Figure 16 The coordination, along the first crease 511 Figure 14 Two vertical parts overlap to form a shape like Figure 17 The structure shown has surfaces A and C covered, while surfaces B and C are on the outside, forming two triangular wings. Then fold inwards along the seventh crease 517. Figures 18-21 As shown, fold along the seventh crease 517, so that the parts on both sides of the crease are together. Fold sides B and C inward along the fifth crease 515 and the sixth crease 516 respectively, forming as shown. Figure 21The stacking structure shown completes the folding of the inner liner bag 5. When not filled with liquid, the inner liner bag 5 can be... Figure 21 The stacked structure shown is used for storage and transfer.

[0076] See also Figure 10 and Figure 11 and the above Figures 12-20 Through this folding process, the aforementioned first fold 501, second fold 502, third fold 503, and fourth fold 504 can be obtained. The first fold 501 corresponds to side B. The third fold 503 corresponds to side D. The second fold 502 and fourth fold 504 are the areas defined between the second crease 512 and the third crease 513, and are further divided into the corresponding first fold 501 and fourth fold 504 by the first crease 511. Since the first crease 511 is located slightly to the left of the center of the entire inner lining bag, the area of ​​the second fold 502 is larger than that of the fourth fold 504. Based on this, the second fold 502 is folded through the seventh crease 517 to create a first part 5021 with an area equivalent to that of the fourth fold 504, and a second part 5022 extending beyond the fourth fold 504.

[0077] See also Figure 2 When filling the inner liner bag 5, the folded inner liner bag is laid on the bottom of the unfolded box. At this time, the discharge valve of the inner liner bag is on the top edge of the folded inner liner and can be easily fixed to the box's drain port. Then, the inner liner bags are unfolded in the box according to the folding order until the filling port interface is reached. The side with the filling port is fixed to the inner liner support (bridge). The inner liner support (bridge) is fixed to the side wall of the box, so that the external filling outlet is placed into the filling port interface of the inner liner bag. Filling can be started to fully fill the inner liner bag. No manual adjustment of the inner liner bag is required during the process.

[0078] See Figures 22-26 , Figures 22-26 A second folding method for the inner lining bag 5 is shown, which can also be used to obtain the various folds mentioned above.

[0079] like Figure 22 As shown, the inner liner bag body 51 has a first crease 511 extending along the length direction, and a second crease 512 and a third crease 513 extending along the width direction and spaced apart. To better show the front and bottom surfaces of the inner liner bag 5, two bottom markings 54 are provided on the bottom surface of the inner liner bag 5. These two bottom markings 54 are located near two corners on the side away from the filling port 52. In the figure, if the bottom marking 54 is a dashed line, it indicates that the marking is located on the back of the area shown and cannot be directly observed from the viewpoint in the figure; if it is a solid line, it indicates that the marking is located on the front of the area shown and can be directly observed from the viewpoint in the figure.

[0080] It also includes a fourth crease 514 extending along the length direction, located on the side near the filling port 52.

[0081] like Figure 23 As shown, fold clockwise 180° along the first crease 511, so that the portions on both sides of the first crease 511 are touching. Figure 24 As shown, fold counterclockwise 180° along the fourth crease 514, so that the parts on both sides of the fourth crease 514 are touching. Figure 25 As shown, fold 180° inwards along the second crease 512 and the third crease 513 respectively, forming as shown. Figure 26 The stacking structure shown completes the folding of the inner liner bag 5. When not filled with liquid, the inner liner bag 5 can be... Figure 26 The stacked structure shown is used for storage and transfer.

[0082] See Figure 27 and Figure 28 and the above Figures 22-26 Through this folding process, the first fold 501, the second fold 502, the third fold 503, and the fourth fold are obtained. The fourth fold is covered by the first fold 501 and the second fold 502. Figure 26 and Figure 27 (Not shown in the diagram). The first fold 501 is the area defined by the third fold 513, the first fold 511, and one edge of the width of the lining bag. The third fold 503 is the area defined by the second fold 512, the first fold 511, and the other edge of the width of the lining bag. The second fold 502 and the fourth fold 504 are the areas defined by the second fold 512 and the third fold 513, divided by the first fold 511 into corresponding first fold 501 and fourth fold 504. Since the first fold 511 is located slightly to the left of the center of the entire lining bag, the area of ​​the second fold 502 is larger than that of the fourth fold 504. Based on this, the second fold 502 is folded through the fourth fold 514 to create a first portion 5021 with an area equivalent to that of the fourth fold 504, and a second portion 5022 extending beyond the fourth fold 504.

[0083] See Figure 28When filling the inner liner bag 5, the folded inner liner bag is laid on the bottom of the unfolded box. At this time, the discharge valve of the inner liner bag is on the top edge of the folded inner liner and can be easily fixed to the box's drain port. Then, the inner liner bags are unfolded in the box according to the folding order until the filling port interface is reached. The side with the filling port is fixed to the inner liner support (bridge). The inner liner support (bridge) is fixed to the side wall of the box, so that the external filling outlet is placed into the filling port interface of the inner liner bag. Filling can be started to fully fill the inner liner bag. No manual adjustment of the inner liner bag is required during the process.

[0084] See Figure 29 and Figure 30 , Figure 29 and Figure 30 A schematic diagram is shown showing the inner lining bag, folded in the first manner described above, placed inside an unfolded box. The first fold 501 and the third fold 503 are the top two layers of the folded inner lining bag.

[0085] See Figure 31 Double-sided tape 8 is affixed to the base 1 and both first side panels 2 of the box body. The fourth fold 504 of the inner lining bag 5 is fixed to the base 1 by the double-sided tape 8, and the first fold 501 and the third fold 503 are fixed to the corresponding first side panels 2 by the double-sided tape 8. See also Figure 26 The fixing between the first folding part 501 and the third folding part 503 and the corresponding second side plate 2 can either allow the folding part to unfold and adhere to the side plate, or allow the side plate to fold and drive the double-sided adhesive to stick to the folding part.

[0086] See Figure 33 and Figure 34 Since both the first folding part 501 and the third folding part 503 are fixed to their respective side panels, when the collapsible container is folded, the first folding part 501 and the third folding part 503 can be folded together with the side panels, and the inner lining bag can also be transported and handled along with the container. See also Figure 35 When the collapsible container is unfolded, two long side panels and two short side panels unfold sequentially from top to bottom, with the first fold 501 and the third fold 503 unfolding together with their corresponding short side panels. During filling, as... Figure 2 As shown, simply unfold the box, and the side panels of the box will automatically lift the inner lining bags on both sides; then pull up the filling port, fix the side with the filling port to the inner lining support (bridge), and fix the inner lining support (bridge) to the side wall of the box, so that the external filling outlet is placed into the filling port interface of the inner lining bag, and filling can begin, which can fully fill the inner lining without the need for manual adjustment of the inner lining bag.

[0087] Similarly, the inner lining bag obtained by folding in the second way can be fixed to the corresponding side panel and base of the box body using the same method as the first fold 501, the third fold 503 and the fourth fold 504.

[0088] The preferred embodiments of the present invention have been described in detail above. However, it should be understood that after reading the above teachings, those skilled in the art can make various alterations or modifications to the present invention. These equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A collapsible container comprising a box having a base, a pair of opposed first side panels and an adjacent pair of opposed second side panels, the first and second side panels each being hinged to the base and foldable relative to the base, characterised in that, The inner liner bag has a folded state, and is placed in the box and is operatively limited in the box by the first side plate and / or the second side plate folded relative to the base.

2. The collapsible container of claim 1, wherein, When the first side plate and the second side plate are both folded relative to the base, a spacing is formed between the first side plate or the second side plate on the lower layer and the base, and the inner liner bag is located in the spacing in the folded state.

3. The collapsible container of claim 1, wherein, The bottom of the box is provided with a drainage port, and the inner liner bag is provided with a discharge port, and the discharge port of the inner liner bag is located in the drainage port.

4. The collapsible container of claim 1, wherein, The inner liner bag has a plurality of folds in the folded state, at least one of the plurality of folds is fixed with the corresponding first side plate or second side plate, and the fold is arranged to be able to unfold or fold with the first side plate or the second side plate.

5. The collapsible container of claim 4, wherein, The inner liner bag is arranged to be folded with a first fold, a second fold, a third fold and a fourth fold, and the first fold, the second fold and the third fold are respectively connected to different sides of the fourth fold. The fourth fold is fixed with the base, and the first fold and the third fold are respectively fixed with a pair of first side plates or a pair of second side plates.

6. The collapsible container of claim 5, wherein, The inner liner bag has a front surface and a bottom surface arranged oppositely, and the inner liner bag further comprises a filling port and a discharge port, both of which are arranged on the bottom surface of the inner liner bag, the filling port is arranged on the second fold, and the discharge port is arranged on the first fold or the third fold.

7. The collapsible container of claim 6 wherein, The filling port is located at one end of the second fold away from the fourth fold.

8. The collapsible container of claim 5, wherein, The second fold comprises a first part connected with the fourth fold and a second part connected with the first part, and the filling port is located in the second part, in the folded state, the second part is located above the first part, and the front surface of the second part is outwardly arranged.

9. The collapsible container of claim 8, wherein, The foldable container further comprises an inner liner bag support located at the top of a pair of first side plates or a pair of second side plates, and the second part of the second fold is operatively placed on the inner liner bag support.

10. The collapsible container of claim 8 wherein, The area of the first part is equivalent to that of the fourth fold.

11. The collapsible container of claim 5, wherein, The discharge port is arranged near the bottom where the first fold and the fourth fold are connected, or the discharge port is arranged near the bottom where the third fold and the fourth fold are connected.

12. The collapsible container of claim 5, wherein, The fourth fold is rectangular, and the first fold and the third fold are connected to two sides of opposite sides of the rectangle, and in the folded state, the bottom surface of the first fold and the third fold is outwardly arranged.

13. The collapsible container of claim 12, wherein, The first fold and the third fold both comprise a third part and a fourth part, in the folded state, the third part is located below the second fold, the fourth part is located above the second fold, and the bottom surface of the fourth part is outwardly arranged, and the discharge port is arranged in the fourth part.

14. The collapsible container of claim 4 wherein, The folding part is fixed with the corresponding first side plate or second side plate by double-sided adhesive tape.

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