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 lining bag has a folded state. The lining bag is provided with a plurality of folding parts in the folding state, the lining bag is arranged in the box body in the folding state, and at least one of the folding parts is fixed with the corresponding first side plate or the second side plate; and the folding part can be unfolded or folded together with the first side plate or the second side plate in an operable mode, the lining bag can be transported and turned over along with the box body, and filling operation is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of logistics containers, in particular to a foldable container. BACKGROUND

[0002] The foldable container can greatly reduce the space occupation by folding when empty, and has better cost advantages for warehouse space and return logistics transportation. Compared with non-foldable containers, foldable containers have obvious advantages, so more and more industries seek to replace non-foldable containers with foldable containers. For example, foldable IBC (intermediate bulk container) is gradually replacing integrated ton barrel containers in the liquid packaging field. The structure of the foldable IBC generally includes a base, two pairs of side plates, and a cover. A small door is provided on one of the side plates, which can be opened outward to facilitate workers to bend into the box to perform some operations. When the box is folded, the first folded side plate and the base bearing surface are roughly flat, and then the remaining side plates are folded in turn and roughly flat, forming a folded state with unchanged length and width and reduced height. The box in this state occupies less space, so it brings various benefits in logistics and warehousing.

[0003] When transporting liquid, an inner liner bag needs to be laid in the IBC. The structure of the inner liner bag currently used in IBC generally includes an inner liner bag body, a filling port and a discharge port provided on the inner liner bag body, and the filling port and the discharge port are respectively welded to the inner liner bag body. The existing liquid filling method is to fold the inner liner bag and then place it in the unfolded IBC, and then fill the inner liner bag through the filling port. This method requires customers to perform additional inner liner bag laying on site, and at least two workers are needed to assist in adjusting the position of the inner liner during the filling process to prevent problems such as incomplete filling from occurring. SUMMARY

[0004] The purpose of the present application is to provide a foldable container that can transport and circulate the inner liner bag together with the box and facilitate filling operations.

[0005] To achieve the above-mentioned purpose, the technical solutions adopted by the present application are as follows:

[0006] A foldable container includes a box and an inner liner bag. The box has a base, a pair of opposite first side plates, and a pair of adjacent 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. The inner liner bag has a folded state, and in the folded state, the inner liner bag has a plurality of folded parts. The inner liner bag is placed in the box in the folded state, at least one of the plurality of folded parts is fixed with the corresponding first side plate or second side plate, and the folded part is operable to unfold or fold together with the first side plate or the second side plate.

[0007] In one embodiment, the inner liner bag is configured to be folded with a first fold, a second fold, a third fold and a fourth fold, the first fold, the second fold and the third fold are connected to different sides of the fourth fold respectively;

[0008] wherein the fourth fold is fixed to the base, and the first fold and the third fold are fixed to a pair of the first side panels or a pair of the second side panels respectively.

[0009] In one embodiment, the inner liner bag has a front face and a bottom face oppositely arranged, the inner liner bag further comprises a filling port and a discharge port, the filling port and the discharge port are arranged on the bottom face 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.

[0010] In one embodiment, the bottom of the box is provided with a drainage port, and the discharge port of the inner liner bag is located in the drainage port.

[0011] In one embodiment, the filling port is located at a side end of the second fold away from the fourth fold.

[0012] In one embodiment, the second fold comprises a first part connected to the fourth fold and a second part connected to the first part, the filling port is located at the second part, in the folded state, the second part is located above the first part, and the front face of the second part is outwardly arranged.

[0013] In one embodiment, the foldable container further comprises an inner liner bag support, the inner liner bag support is located at the top of a pair of the first side panels or a pair of the second side panels, and the second part of the second fold is operatively arranged on the inner liner bag support.

[0014] In one embodiment, the area of the first part is equivalent to that of the fourth fold.

[0015] In one embodiment, the discharge port is arranged at a bottom near the connection between the first fold and the fourth fold, or the discharge port is arranged at a bottom near the connection between the third fold and the fourth fold.

[0016] In one embodiment, the fourth fold is rectangular, the first fold and the third fold are connected to two side edges of opposite sides of the rectangle, and in the folded state, the bottom faces of the first fold and the third fold are outwardly arranged.

[0017] In one embodiment, the first fold and the third fold are both composed of a third part and a fourth part, in the folded state, the third part is below the second fold, the fourth part is above the second fold, and the bottom surface of the fourth part is outwardly arranged, and the discharge port is arranged on the fourth part.

[0018] In one embodiment, the fold is fixed to the corresponding base, first side plate or second side plate by double-sided adhesive tape.

[0019] The technical scheme has the beneficial effects that the inner liner bag in the foldable container is folded in the box body, and the folded inner liner bag is fixed with the side plate of the container cavity, the inner liner bag can be transported and circulated together with the folded box body; during filling, the side plate of the box body drives the corresponding inner liner bag to automatically lift; and finally, the filling port is pulled up to perform normal filling action. In this way, the customer can save the operation step of laying the inner liner bag, and the inner liner bag can be fully filled without manual adjustment during filling, thereby greatly reducing the labor cost. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A box body structure schematic diagram of a foldable container is shown.

[0021] Figure 2 A schematic diagram of the inner liner bag folded in the first way and unfolded in the box body to start filling is shown.

[0022] Figure 3 A schematic diagram of the inner liner bag is shown.

[0023] Figure 4 A schematic diagram of the inner liner bag folded in the first way and unfolded in the box body is shown.

[0024] Figure 5 A schematic diagram of the crease position of the inner liner bag folded in the first way is shown.

[0025] Figure 6 A schematic diagram of the first step action of the inner liner bag folded along the crease in the first way is shown.

[0026] Figure 7 A schematic diagram of the second step action of the inner liner bag folded along the crease in the first way is shown.

[0027] Figure 8 A schematic diagram of the third step action of the inner liner bag folded along the crease in the first way is shown.

[0028] Figure 9 A schematic diagram of the fourth step action of the inner liner bag folded along the crease in the first way is shown.

[0029] Figure 10 A fifth step action diagram showing the inner liner bag being folded along the creases in the first manner.

[0030] Figure 11 A sixth step action diagram showing the inner liner bag being folded along the creases in the first manner.

[0031] Figure 12 A seventh step action diagram showing the inner liner bag being folded along the creases in the first manner.

[0032] Figure 13 An eighth step action diagram showing the inner liner bag being folded along the creases in the first manner.

[0033] Figure 14 A ninth step action diagram showing the inner liner bag being folded along the creases in the first manner.

[0034] Figure 15 A completed structure diagram showing the inner liner bag being folded along the creases in the first manner.

[0035] Figure 16 A crease position diagram showing the inner liner bag being folded in the second manner.

[0036] Figure 17 A first step action diagram showing the inner liner bag being folded along the creases in the second manner.

[0037] Figure 18 A second step action diagram showing the inner liner bag being folded along the creases in the second manner.

[0038] Figure 19 A third step action diagram showing the inner liner bag being folded along the creases in the second manner.

[0039] Figure 20 A completed structure diagram showing the inner liner bag being folded along the creases in the second manner.

[0040] Figure 21 A diagram showing the inner liner bag folded in the second manner being deployed within the box.

[0041] Figure 22 A diagram showing the inner liner bag folded in the second manner being deployed within the box to the beginning of filling.

[0042] Figure 23 A diagram showing the inner liner bag folded in the first manner being placed within the box.

[0043] Figure 24 A cross-sectional diagram showing the inner liner bag folded in the first manner being placed within the box.

[0044] Figure 25 A schematic view showing the inner liner bag folded in the first manner is placed in the box and the double-sided adhesive is fixed in the box.

[0045] Figure 26 A schematic view showing the folded part of the inner liner bag is fixed with the corresponding side plate.

[0046] Figure 27 A schematic view showing the folded part of the inner liner bag is folded with the side plate.

[0047] Figure 28 A schematic view showing the inner liner bag in the folded box.

[0048] Figure 29 A schematic view showing the inner liner bag is unfolded with the side plate of the box. DETAILED DESCRIPTION

[0049] The preferred embodiments of the present application will be described in detail with reference to the drawings, so as to make the purpose, features and advantages of the present application more apparent. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present application, but merely to illustrate the essential spirit of the technical solutions of the present application.

[0050] In the following description, for the purposes of explaining the various embodiments disclosed herein, certain specific details are set forth in order to provide a thorough understanding of various embodiments. However, one skilled in the relevant art will recognize that embodiments can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, structures, and processes have not been shown or described in order to avoid obscuring the description.

[0051] Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise," "comprising," and the like are to be construed in an open, inclusive sense, as opposed to a closed or exclusive sense, so that, for example, the term "comprising" will be understood to mean "including but not limited to."

[0052] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrase "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0053] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. It should be noted that the term "comprising" as used in this specification and the appended claims is inclusive or open and does not exclude additional, unrecited elements or method steps.

[0054] In the following description, for purposes of clarity of understanding of the structure and working principle of the present application, a number of directional words will be used in the description, but the words "front", "back", "left", "right", "outer", "inner", "outward", "inward", "up", "down" and the like should be understood as convenient language and should not be understood as limiting words.

[0055] In addition, the terms "horizontal", "vertical", "overhang" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0056] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] The present application provides a foldable container comprising a box and an inner liner bag, wherein the box of the present application is a foldable IBC. The box has a base, a pair of opposite first side panels and a pair of adjacent opposite second side panels, the first side panels and the second side panels are hinged to the base and can be folded relative to the base. Referring to Figure 1 and Figure 2 The box in the embodiment comprises a base 1, a pair of opposite first side panels 2 and a pair of opposite second side panels 3. The first side panels 2 and the second side panels 3 are adjacent to each other and, in the upright state, together with the base 1 define an internal volume. Preferably, the first side panels 2 and the second side panels 3 are made of high-strength material such as high-strength plastic. Generally, the length of the first side panels 2 is shorter than the length of the second side panels 3 to form a box in the shape of a generally rectangular cuboid. Therefore, the first side panels 2 are also called short side panels, and the second side panels 3 are also called long side panels. However, it should be understood that the first side panels 2 and the second side panels 3 can also be the same length to form a square box. The bottom ends of the first side panels 2 and the second side panels 3 are connected to the four edges on the base 1 by hinge structures. One pair of opposite edges of the four edges is provided with an upward guard 4, the height of the guard 4 is substantially equal to the thickness of the side panels provided on the adjacent pair of edges, and the height of the guard 4 defines a space for accommodating the adjacent side panels folded onto the base 1. Thus, the first side panels 2 and the second side panels 3 can be folded successively above the base 1 to place the box in a folded state.

[0058] Referring to Figure 3The inner liner bag 5 comprises an inner liner bag body 51, a filling port 52 and a discharge port 53. The inner liner bag body 51 is formed by sealing and welding the front sheet and the back sheet along the periphery. The main welding line of the inner liner bag is formed on the periphery edge of the inner liner bag body 51. The front sheet and the back sheet are substantially rectangular or approximately rectangular flexible sheets, for example, a polygon formed by beveling the four corners of a rectangle. The front sheet and the back sheet are usually made of plastic. The filling port 52 and the discharge port 53 are sealingly connected to the inner liner bag body and are both arranged on the back sheet, i.e., the filling port 52 and the discharge port 53 are both arranged on the bottom side of the inner liner bag.

[0059] Since the inner liner bag 5 is made of flexible sheet material, the inner liner bag 5 can be folded to reduce the volume for convenient storage and transportation. Referring to Figure 4 The inner liner bag 5 is arranged to have a first folding portion 501, a second folding portion 502, a third folding portion 503 and a fourth folding portion 504 by folding operation, wherein the first folding portion 501, the second folding portion 502 and the third folding portion 503 are respectively connected to different sides of the fourth folding portion 504, the filling port 52 is arranged on the second folding portion 502, the discharge port 53 is arranged on the first folding portion 501, and it should be understood that the discharge port 53 can also be arranged on the third folding portion 503. In addition, it should be understood that the inner liner bag 5 can also have only one opening, i.e., the opening can serve as both the filling port and the discharge port. When there is only one opening, the opening can be arranged at the position of the filling port 52 or at the position of the discharge port 53.

[0060] The fourth folding portion 504 corresponds to the base 1, the fourth folding portion 504 is folded into a rectangular or approximately rectangular shape with an area corresponding to the base 1, the first folding portion 501 and the third folding portion 503 are connected to two side edges of opposite sides of the rectangle, and the bottom surface of the first folding portion and the third folding portion is arranged outward, and the discharge port 53 corresponds to the liquid discharge port 6 on the box. Referring to Figure 2 Since the liquid discharge port 6 of the box in the present embodiment is arranged on the base edge corresponding to one of the short side plates, and the discharge port 53 is arranged on the first folding portion 501 or the third folding portion 503, the first folding portion 501 or the third folding portion 503 respectively corresponds to a pair of first side plates 2. It should be understood that if the discharge port is arranged on the long side plate, the first folding portion 501 or the third folding portion 503 respectively corresponds to a pair of second side plates 3. Preferably, the discharge port 53 is arranged on the bottom near the connection between the first folding portion 501 and the fourth folding portion 504 or the discharge port 53 is arranged on the bottom near the connection between the third folding portion 503 and the fourth folding portion 504, so that the position of the discharge port 53 corresponds to the liquid discharge port 6 on the box after the folding of the inner liner bag 5 is completed.

[0061] The filling port 52 is located at the end of the second folding part 502 away from the fourth folding part 504, so that the filling port 52 can be placed at the opening of the box, facilitating the filling of the inner liner bag. Preferably, the second folding part 502 comprises a first part 5021 connected to the fourth folding part 504 and a second part 5022 connected to the first part 5021, and the filling port 52 is located at the second part 5022. When folded, the second part 5022 is above the first part 5021, and the front of the second part 5022 is outwardly arranged. At this time, the filling port 52 is folded towards the first part 5021, which can cover or partially cover the filling port 52, thereby preventing the filling port 52 from being contaminated to some extent. More preferably, the area of the first part 5021 is comparable to the area of the fourth folding part 504.

[0062] Referring to Figures 5-15 , Figures 5-15 A first folding method of the inner liner bag 5 is shown, by which the above-mentioned various folding parts can be folded. As shown in Figure 5 , the inner liner bag body 51 is provided with a first crease 511 extending in the length direction, and a second crease 512 and a third crease 513 extending in the width direction and arranged at intervals. In order to better show the front and bottom of the inner liner bag 5, two bottom marks 54 are provided on the bottom of the inner liner bag 5, which are located near the two corners away from the filling port 52. The bottom marks 54 in the figure are dashed lines if the marks are located on the back of the indicated area and cannot be directly observed in the viewing angle of the figure; if they are solid lines, the marks are located on the front of the indicated area and can be directly observed in the viewing angle of the figure.

[0063] It also includes two fifth creases 515 extending from the intersection of the first crease 511 and the second crease 512 to the edge of the width side of the inner liner bag, and two sixth creases 516 extending from the intersection of the first crease 511 and the third crease 513 to the edge of the other width side of the inner liner bag, both of which are symmetrically arranged along the first crease 511. It also includes a seventh crease 517 extending in the length direction, which is located near the side of the filling port 52.

[0064] As shown in Figure 6 and Figure 7 , first fold along the second crease 512 and the third crease 513, and fold inward to the shape shown in Figure 7 , at this time the bottom of the corresponding part of the inner liner bag faces outward. As shown in Figure 8 , fold inward along the first crease 511 by about 90°, so that the inner liner bag 5 is divided into two approximately perpendicular parts. As shown in Figure 9 and Figure 10As shown, two sixth creases 516 and first crease 511 form two triangular surfaces, defined as surface A and surface B respectively, and the two sixth creases 516 are folded outwards so that surface A and surface B are in the same plane; at the same time, two fifth creases 515 and first crease 511 also form two triangular surfaces, defined as surface C and surface D respectively, and the two fifth creases 515 are folded outwards so that surface C and surface D are in the same plane. As shown, Figure 11 As shown, by the cooperation of Figure 9 and Figure 10 , two parts of Figure 8 perpendicular to the first crease 511 are overlapped to form the structure as shown, Figure 11 At this time, surface A and surface C are covered, and surface B and surface C are located on the outside to form two triangular flaps. Then fold inwards along the seventh crease 517. As shown, Figures 12-15 Fold along the seventh crease 517 so that the parts on both sides of the crease are fitted, and surface B and surface C are folded inwards along the fifth crease 515 and the sixth crease 516 respectively to form the stacking structure as shown, Figure 15 The folding of the inner liner bag 5 is completed. When there is no liquid filled, the inner liner bag 5 can be stored and transferred by the stacking structure as shown. Figure 15

[0065] Referring to Figure 4 and Figure 5 , and the above Figures 6-14 , the first folding part 501, the second folding part 502, the third folding part 503 and the fourth folding part 504 can be obtained by the folding process. The first folding part 501 is the part corresponding to surface B. The third folding part 503 is the part corresponding to surface D. The second folding part 502 and the fourth folding part 504 are the areas defined between the second crease 512 and the third crease 513, and divided into the first folding part 501 and the fourth folding part 504 by the first crease 511. Since the first crease 511 is located to the left of the center of the entire inner liner bag, the area of the second folding part 502 is larger than that of the fourth folding part 504. On this basis, the second folding part 502 is folded by the seventh crease 517 to form a first part 5021 with an area comparable to that of the fourth folding part 504 and a second part 5022 exceeding the fourth folding part 504.

[0066] Referring to Figure 2 ​When the inner liner bag 5 is filled, the folded inner liner bag is laid on the unfolded box bottom, and the discharge port valve of the inner liner bag is on the edge of the folded top of the inner liner bag, which can be easily fixed with the box discharge port. Then the inner liner bag is unfolded in the box according to the folding sequence until the side with the filling port is unfolded, and the side with the filling port is fixed on the inner liner support (bridge) fixed on the side wall of the box, so that the external filling output port is put into the filling port interface of the inner liner bag, and the filling is started, and the inner liner bag can be fully filled without manual adjustment.

[0067] Referring to Figures 16-20 , Figures 16-20 The second folding method of the inner liner bag 5 is shown, and the above-mentioned folding parts can also be folded by this folding method.

[0068] As shown in Figure 16 , the inner liner bag body 51 is provided with a first fold line 511 extending in the length direction, and second and third fold lines 512 and 513 extending in the width direction and arranged at intervals. In order to better show the front and bottom of the inner liner bag 5, two bottom surface marks 54 are arranged on the bottom surface of the inner liner bag 5, and the two bottom surface marks 54 are located near the two corners away from the filling port 52. If the bottom surface mark 54 in the figure is a dashed line, it means that the mark is on the back of the shown area and cannot be directly observed in the perspective of the figure; if it is a solid line, it means that the mark is on the front of the shown area and can be directly observed in the perspective of the figure.

[0069] It also includes a fourth fold line 514 extending in the length direction, and the fourth fold line 514 is located near the filling port 52.

[0070] As shown in Figure 17 , fold along the first fold line 511 clockwise by 180°, so that the parts on both sides of the first fold line 511 are attached. Figure 18 As shown in Figure 19 , fold along the second and third fold lines 512 and 513 respectively to the opposite inner sides by 180°, forming the stacking structure as shown in Figure 20 , and the folding of the inner liner bag 5 is completed. When the inner liner bag 5 is not filled with liquid, it can be stored and transferred through the stacking structure as shown in Figure 20 .

[0071] Referring to Figure 21 and Figure 22 , and the above-mentioned Figures 16-20, through the folding process can be obtained above the first folding part 501, the second folding part 502, the third folding part 503 and the fourth folding part, the fourth folding part is shielded by the first folding part 501 and the second folding part 502 in Figure 20 And Figure 21 Not shown in. Wherein the first folding part 501 is the third crease 513, the first crease 511 and the width of the inner liner bag between the side edge of the region. The third folding part 503 is the second crease 512, the first crease 511 and the width of the inner liner bag between the other side edge of the region. The second folding part 502 and the fourth folding part 504 are the regions defined by the second crease 512, the third crease 513, and the first crease 511 is divided into the corresponding first folding part 501 and the fourth folding part 504. Because the first crease 511 is located on the left side of the center relative to the whole inner liner bag, the area of the second folding part 502 is greater than that of the fourth folding part 504, on this basis, the second folding part 502 is folded out of the first part 5021 and the second part 5022 which is larger than the fourth folding part 504 by the fourth crease 514.

[0072] Referring to Figure 22 , when filling the inner liner bag 5, the folded inner liner bag is laid on the unfolded box bottom, at this time the discharge valve of the inner liner bag is at the top edge of the folded inner liner bag, which can be easily fixed with the box liquid discharge port, then the inner liner bag is unfolded in the box according to the folding order, until the interface of the filling port is unfolded to one side, the side with the filling port is fixed on the inner liner support (bridge), the inner liner support (bridge) is fixed on the side wall of the box, the external filling output port is put into the filling port interface of the inner liner bag, and the filling is started, which can fully fill the inner liner, and the inner liner bag does not need to be adjusted artificially during the filling.

[0073] Referring to Figure 23 And Figure 24 , Figure 23 And Figure 24 The above-mentioned first folding mode is shown in the schematic diagram of the inner liner bag placed in the unfolded box. The first folding part 501 and the third folding part 503 are the top two layers of the inner liner bag after folding.

[0074] Referring to Figure 25 , the base 1 and the two first side plates 2 of the box are pasted with double-sided adhesive tape 8, the fourth folding part 504 of the inner liner bag 5 is fixed with the base 1 through the double-sided adhesive tape 8, and the first folding part 501 and the third folding part 503 are fixed with the corresponding first side plate 2 through the double-sided adhesive tape 8. Referring to Figure 26 , the fixing between the first folding part 501 and the third folding part 503 and the corresponding second side plate 2 can make the folding part unfold and adhere to the side plate, or the side plate can be folded to drive the double-sided adhesive tape to be pasted to the folding part.

[0075] Referring to Figure 27 and Figure 28 Since the first folding part 501 and the third folding part 503 are both fixed to the corresponding side plates, when the box is folded, the first folding part 501 and the third folding part 503 can be folded together with the side plates, and the inner liner bag can also be transported and circulated together with the box. Referring to Figure 29 When the box is unfolded, the two long side plates and the two short side plates are unfolded in turn from top to bottom, and the first folding part 501 and the third folding part 503 are unfolded together with the corresponding short side plates. When filling, as Figure 2 shown, only the box needs to be unfolded, and the side plates of the box will automatically lift the inner liner bags on the left and right sides; then pull up the filling port, fix the side with the filling port on the inner liner support (bridge), fix the inner liner support (bridge) on the side wall of the box, and put the external filling output port into the filling port interface of the inner liner bag, start filling, and the inner liner can be fully filled, without the need for manual adjustment of the inner liner bag.

[0076] Similarly, the inner liner bag folded in the second folding manner can be fixed to the corresponding side plates and base of the box by the same method as the first folding part 501, the third folding part 503, and the fourth folding part 504.

[0077] The preferred embodiments of the present application have been described in detail above, but it should be understood that those skilled in the art can make various modifications or changes to the present application after reading the above teachings of the present application. These equivalent forms also fall within the scope of the appended claims of the present application.

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 has a plurality of folded portions in the folded state. The inner liner bag is placed in the box in the folded state. At least one of the plurality of folded portions is fixed to the corresponding first side plate or second side plate, and the folded portion is operable to be unfolded or folded together with the first side plate or second side plate.

2. The collapsible container of claim 1, wherein, The inner liner bag is arranged to have a first folded portion, a second folded portion, a third folded portion and a fourth folded portion due to folding. The first folded portion, the second folded portion and the third folded portion are respectively connected to different sides of the fourth folded portion. The fourth folded portion is fixed to the base. The first folded portion and the third folded portion are respectively fixed to a pair of first side plates or a pair of second side plates.

3. The collapsible container of claim 2, wherein, The inner liner bag has an opposite front surface and bottom surface. The inner liner bag further comprises a filling port and a discharge port. The filling port and the discharge port are arranged on the bottom surface of the inner liner bag. The filling port is arranged on the second folded portion, and the discharge port is arranged on the first folded portion or the third folded portion.

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

5. The collapsible container of claim 3, wherein, The filling port is located at one end of the second folded portion away from the fourth folded portion.

6. The collapsible container of claim 5, wherein, The second folded portion comprises a first part connected to the fourth folded portion and a second part connected to the first part. 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 arranged outward.

7. The collapsible container of claim 6 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. The second part of the second folded portion is operable to be placed on the inner liner bag support.

8. The collapsible container of claim 6, wherein, The area of the first part is equivalent to that of the fourth folded portion.

9. The collapsible container of claim 3, wherein, The discharge port is arranged near the bottom where the first folded portion is connected to the fourth folded portion, or the discharge port is arranged near the bottom where the third folded portion is connected to the fourth folded portion.

10. The collapsible container of claim 2, wherein, The fourth folded portion is rectangular in shape. The first folded portion and the third folded portion are connected to two sides of opposite sides of the rectangle. In the folded state, the bottom surface of the first folded portion and the third folded portion is arranged outward.

11. The collapsible container of claim 9, wherein, The first folded portion and the third folded portion both comprise a third part and a fourth part. In the folded state, the third part is located below the second folded portion, and the fourth part is located above the second folded portion. The bottom surface of the fourth part is arranged outward, and the discharge port is arranged in the fourth part.

12. The collapsible container of claim 1 wherein, The folded portion is fixed to the corresponding first side plate or second side plate by double-sided adhesive tape.

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