Blank of packaging structure and packaging structure
By designing foldable packaging structure blanks and utilizing rotatable or detachable expansion sheets and side panels, the problem of versatility in paper packaging structures is solved, achieving multi-specification applicability and improved cost-effectiveness.
Patent Information
- Application Number
- CN202423238129.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-26
AI Technical Summary
The folding position and shape of paper packaging structures are predetermined based on the packaged items, resulting in a lack of versatility and a tendency to waste resources and provide poor protection when packaging items of different sizes.
Design a packaging structure blank comprising a bottom plate, a top plate, rotatable or detachable expansion plates and side panels, the volume of which can be changed by folding or removing the structural plates to adapt to packaging items of different sizes.
It has broadened the applicability of packaging structures, reduced resource waste, lowered design and processing costs, and improved the compatibility and protective effect with the packaged items.
Smart Images
Figure CN223574917U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to paper packaging technical field, especially a blank and packaging structure of packaging structure. BACKGROUND
[0002] Paper material is the main material of packaging structure, such as packaging box. The paper packaging structure has certain structural strength and low cost, and is widely used in many fields, for example, the paper packaging structure can be used for e-commerce commodity packaging.
[0003] But the folding position and the shape and volume of the packaging structure made of paper material are pre-set according to the packaged goods, so the packaging structure corresponds to the packaged goods, and the packaging structure does not have universality. In the case that the size specification of the packaged goods is more, it is usually necessary to prepare a plurality of different specifications of packaging structure in advance, which not only easily causes resource waste, but also the protection effect of the packaging structure with unmatched shape on the packaged goods is poor.
[0004] The content of the background section merely represents the best of the inventor's knowledge and does not necessarily represent the state of the art in the field. UTILITY MODEL CONTENT
[0005] In view of one or more defects in the prior art, the utility model provides a blank of packaging structure for folding and forming into a packaging structure, which comprises:
[0006] A bottom plate;
[0007] A top plate, which is opposite to the bottom plate after the blank is folded and formed into a packaging structure;
[0008] A first expansion sheet, which is rotatably or detachably connected with the bottom plate, and comprises at least one first structure sheet, and when the first expansion sheet comprises a plurality of first structure sheets, the plurality of first structure sheets are rotatably or detachably connected with each other;
[0009] A second expansion sheet, which is rotatably or detachably connected with the top plate, and comprises at least one second structure sheet, and when the second expansion sheet comprises a plurality of second structure sheets, the plurality of second structure sheets are rotatably or detachably connected with each other;
[0010] Among them, the blank is configured to fold or remove the first structure sheet and the second structure sheet to change the volume of the packaging structure after folding and forming.
[0011] According to one aspect of the utility model, the number of the first structure sheets is equal to the number of the second structure sheets, and the shape and size of the first structure sheets and the second structure sheets are close.
[0012] According to an aspect of the present application, the first structure piece is coplanar with the bottom plate and the second structure piece is coplanar with the top plate after the blank is folded into the packaging structure.
[0013] According to an aspect of the present application, the blank further comprises:
[0014] a first side panel, rotatably connected with the bottom plate, and located at the other side of the bottom plate connected with the first extension piece;
[0015] a second side panel, rotatably connected with the top plate, and located at the other side of the top plate connected with the second extension piece.
[0016] According to an aspect of the present application, the blank further comprises:
[0017] a third side panel, rotatably connected with one of the first structure piece or the second structure piece, and perpendicular to the bottom plate and the top plate after the blank is folded into the packaging structure;
[0018] a gusset, rotatably connected with the other one of the first structure piece or the second structure piece, and attached to the third side panel after the blank is folded into the packaging structure.
[0019] According to an aspect of the present application, the third side panel comprises:
[0020] a standing piece, rotatably connected with one of the first structure piece or the second structure piece;
[0021] a bending piece, rotatably connected with the standing piece, and bent relative to the standing piece to define a gusset with the standing piece after the blank is folded into the packaging structure.
[0022] According to an aspect of the present application, the blank further comprises:
[0023] a connecting portion, rotatably connected with the first side panel and / or the second side panel, and located in the gusset defined by the bending piece and the standing piece after the blank is folded into the packaging structure.
[0024] According to an aspect of the present application, the connecting portion comprises a plurality of connecting pieces, rotatably or detachably connected with each other.
[0025] According to one aspect of the present application, the plurality of connecting pieces have a half-thread and a needle gauge line arranged at intervals.
[0026] According to one aspect of the present application, the plurality of first structure pieces and the plurality of second structure pieces have a half-thread or a needle gauge line.
[0027] According to one aspect of the present application, the present application also relates to a packaging structure, which is folded and formed from the packaging structure blank as described above.
[0028] Compared with the prior art, the blank of the packaging structure provided by the embodiments of the present application has the following advantages: after being folded and formed into a packaging structure, the top plate and the bottom plate serve as the upper surface and the lower surface of the packaging structure, respectively; the first expansion piece and the second expansion piece are connected with the bottom plate and the top plate, respectively; and when the blank is folded and formed into a packaging structure, a part of the first structure pieces and the second structure pieces can be accommodated by being bent, or a part of the first structure pieces and the second structure pieces can be removed, so as to change the volume of the packaging structure, improve the matching degree of the packaging structure and the packaged articles, make the application range of the packaging structure wider, and facilitate reduction of the design and processing costs of the packaging structure.
[0029] The present application also relates to an embodiment of a packaging structure, which is folded and formed from the blank as described above. BRIEF DESCRIPTION OF DRAWINGS
[0030] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application and explain the principles of the present application, and do not constitute a limitation of the present application. In the drawings:
[0031] Figure 1 An unfolded schematic view of the blank according to some embodiments of the present application is shown;
[0032] Figures 2A-2C Schematic views of packaging structures with different volumes according to some embodiments of the present application are shown. DETAILED DESCRIPTION
[0033] In the following, only some exemplary embodiments are described briefly. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.
[0034] In the description of the utility model, it is necessary to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relation based on the orientation or positional relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.
[0035] In the description of the utility model, it should be explained that, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected: it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0036] In the utility model, unless otherwise specifically defined and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the vertical and inclined upward of the first feature above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include the vertical and inclined downward of the first feature below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0037] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.
[0038] The embodiments of the present application are described below in conjunction with the accompanying drawings, and it should be understood that the embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.
[0039] Figure 1 An unfolded view of a blank 100 of a packaging structure according to some embodiments of the present application is shown, Figures 2A-2C A structure of the blank 100 after being folded into a packaging structure 200 according to some embodiments of the present application is shown, which will be described below in conjunction with Figures 1-2C .
[0040] The blank 100 of the packaging structure in the present embodiment is used to be folded into a packaging structure. In some embodiments, the blank 100 can be made of paper materials, such as corrugated paper, cardboard, kraft paper, etc. After the design is completed, the blank 100 can be cut on a large piece of paper material, and indentation lines, knife lines, etc. are processed at predetermined positions in the blank 100, so as to facilitate the folding of the blank 100 into a packaging structure.
[0041] As Figure 1 shown, the blank 100 in the present embodiment includes a bottom plate 110, a top plate 120, a first expansion sheet 130, and a second expansion sheet 140.
[0042] After the blank 100 is folded into a packaging structure, the bottom plate 110 can serve as the lower surface of the packaging structure, and the top plate 120 can serve as the upper surface of the packaging structure. Among them, the up-down orientation of the packaging structure is related to the specific posture of the packaging structure, and in the embodiments of the present application, the specific positions of the bottom plate 110 and the top plate 120 are not limited, and the bottom plate 110 and the top plate 120 are relative after being folded.
[0043] The first expansion sheet 130 and the bottom plate 110 can be rotatably or detachably connected. In some embodiments, for example, a creasing line or a cutting line is processed between the first expansion sheet 130 and the bottom plate 110, the first expansion sheet 130 can be folded by rotating relative to the bottom plate 110. In other embodiments, a cutting line, such as an intermittent line, is processed between the first expansion sheet 130 and the bottom plate 110, the first expansion sheet 130 can be torn off from the bottom plate 110, so as to separate the first expansion sheet 130 from the bottom plate 110.
[0044] Further, the first expansion sheet 130 comprises at least one first structure sheet 131, for example Figure 1 As shown, the first expansion sheet 130 comprises two first structure sheets 131. When the first expansion sheet 130 comprises a plurality of first structure sheets 131, the plurality of first structure sheets 131 can be rotatably or detachably connected, for example, one of the first structure sheets 131 can be folded by rotating or removed by detaching.
[0045] Preferably, when the first expansion sheet 130 comprises a plurality of first structure sheets 131, the positions of the plurality of first structure sheets 131 rotatably or detachably connected are parallel to the positions of the first expansion sheet 130 and the bottom plate 110 rotatably or detachably connected.
[0046] The second expansion sheet 140 and the top plate 120 can be rotatably or detachably connected. In some embodiments, for example, a creasing line or a cutting line is processed between the second expansion sheet 140 and the top plate 120, the second expansion sheet 140 can be folded by rotating relative to the top plate 120. In other embodiments, a cutting line, such as an intermittent line, is processed between the second expansion sheet 140 and the top plate 120, the second expansion sheet 140 can be torn off from the top plate 120, so as to separate the second expansion sheet 140 from the top plate 120.
[0047] Further, the second expansion sheet 140 comprises at least one second structure sheet 141, for example Figure 1 As shown, the second expansion sheet 140 comprises two second structure sheets 141. When the second expansion sheet 140 comprises a plurality of second structure sheets 141, the plurality of second structure sheets 141 can be rotatably or detachably connected, for example, one of the second structure sheets 141 can be folded by rotating or removed by detaching.
[0048] Preferably, when the second expansion sheet 140 comprises a plurality of second structure sheets 141, the positions of the plurality of second structure sheets 141 rotatably or detachably connected are parallel to the positions of the second expansion sheet 140 and the top plate 120 rotatably or detachably connected.
[0049] The blank 100 in the embodiment can be folded into a packaging structure with a smaller volume by folding or removing a part (or all) of the first structure pieces 131 and the second structure pieces 141.
[0050] The number of the first structure pieces 131 and the second structure pieces 141 also affects the stability of the packaging structure after folding and forming. According to the preferred embodiment of the present application, the number of the first structure pieces 131 and the second structure pieces 141 can be between 1 and 4.
[0051] The blank 100 can change the volume of the packaging structure after folding and forming by folding or removing the first structure pieces 131 and the second structure pieces 141. The blank 100 in the embodiment can provide packaging structures of multiple different sizes, which improves the application range of the packaging structure, reduces the waste of raw materials, and has a higher matching degree with the packaged articles, which is beneficial to the protection effect of the packaged articles. In addition, the blank 100 in the embodiment can have a consistent specification, which is beneficial to reducing the processing difficulty and processing cost.
[0052] According to the preferred embodiment of the present application, as shown in Figure 1 The number of the first structure pieces 131 and the second structure pieces 141 is equal, both of which are two. Further, the shape and size of the first structure pieces 131 and the second structure pieces 141 are similar, for example, the first structure pieces 131 and the second structure pieces 141 are both rectangles with equal length and width.
[0053] In other embodiments, the number and shape and size of the first structure pieces 131 and the second structure pieces 141 can be different, for example, the number of the first structure pieces 131 is twice the number of the second structure pieces 141, and the size of the first structure pieces 131 is half the size of the second structure pieces 141, and the shape formed by two first structure pieces 131 corresponds to the shape formed by one second structure piece 141. Or in other embodiments, the number and shape and size of the first structure pieces 131 and the second structure pieces 141 are opposite to the above.
[0054] As shown in Figures 2A-2CAs shown, according to a preferred embodiment of the present invention, after the blank 100 is folded and formed into the packaging structure 200, the first structural piece 131 is coplanar with the bottom plate 110, and the second structural piece 141 is coplanar with the top plate 120. After the blank 100 is folded and formed, the first structural piece 131 and the bottom plate 110 together constitute the bottom surface of the packaging structure 200, and the second structural piece 141 and the top plate 120 together constitute the top surface of the packaging structure 200. When the first structural piece 131 and the second structural piece 141 are not folded or removed, the volume of the folded packaging structure 200 is at its maximum. When the first structural piece 131 and the second structural piece 141 are partially folded or removed, the volume of the folded packaging structure 200 is reduced compared to the maximum volume. When the first expansion piece 130 and the second expansion piece 140 are completely removed, the volume of the folded packaging structure 200 is at its minimum.
[0055] like Figure 1 As shown, in a preferred embodiment of this utility model, the blank 100 further includes a first side panel 150 and a second side panel 160. Figures 2A-2C As shown, after the blank 100 is folded and formed into the packaging structure 200, the first side panel 150 and the second side panel 160 constitute the sides of the packaging structure 200. Preferably, after the blank 100 is folded and formed into the packaging structure 200, the first side panel 150 and the second side panel 160 are perpendicular to the bottom plate 110 and the top plate 120.
[0056] like Figure 1 As shown, the first side panel 150 is rotatably connected to the base plate 110, and the first side panel 150 is located on the other side of the base plate 110 that is connected to the first expansion piece 130, for example... Figure 1 As shown, the first side panel 150 is located above the base plate 110, and the first expansion piece 130 is located below the base plate 110.
[0057] like Figure 1 As shown, the second side panel 160 is rotatably connected to the top plate 120, and the second side panel 160 is located on the other side of the top plate 120 that is connected to the second expansion piece 140, for example... Figure 1 As shown, the second side panel 160 is located below the top panel 120, and the second expansion piece 140 is located above the top panel 120.
[0058] like Figure 1 As shown, in a preferred embodiment of this utility model, the side of the first side panel 150 furthest from the bottom plate 110 can be configured as a folded portion 151, for example, by machining an embossing line in the middle of the first side panel 150. Figures 2A-2CAs shown, after the blank 100 is folded into the packaging structure 200, the folding part 151 can be folded and attached above the top plate 120 or the second expansion sheet 140, for example, the folding part 151 and the top plate 120 or the second expansion sheet 140 are adhered and fixed, which can seal the packaging structure 200. In some embodiments, the folding part 151 can be bent towards the inside of the packaging structure 200 and inserted and fixed, forming a double-layered side, which is beneficial to improve the stability of the packaging structure 200.
[0059] As shown, according to the preferred embodiment of the utility model, the blank 100 further comprises a third side panel 170 and a plug 180. Figure 1
[0060] Among them, the third side panel 170 is rotatably connected with one of the first structure sheet 131 or the second structure sheet 141, for example Figure 1 As shown in FIG. 1, the third side panel 170 is rotatably connected with the first structure sheet 131. After the blank 100 is folded into the packaging structure 200, the third side panel 170 is perpendicular to the bottom plate 110 and the top plate 120, and the third side panel 170 can constitute the side of the packaging structure 200.
[0061] Preferably, the third side panel 170 is arranged on both sides of the first structure sheet 131 (or the second structure sheet 141), and the axis of rotation of the third side panel 170 relative to the first structure sheet 131 is perpendicular to the axis of rotation of the first structure sheet 131 relative to other first structure sheets 131, or the axis of rotation of the first structure sheet 131 relative to the bottom plate 110, as shown in FIG. 1. Figure 1 As shown in FIG. 1, the axis of rotation of the third side panel 170 relative to the first structure sheet 131 is along Figure 1 the up-down direction in FIG. 1.
[0062] The plug 180 is rotatably connected with the other one of the first structure sheet 131 or the second structure sheet 141, for example Figure 1 As shown in FIG. 1, the third side panel 170 is rotatably connected with the first structure sheet 131, and the plug 180 is rotatably connected with the second structure sheet 141.
[0063] When the blank 100 is folded into the packaging structure 200, the plug 180 and the third side panel 170 are attached. The friction between the plug 180 and the third side panel 170 can make the top plate 120 be buckled above the bottom plate 110, reduce the risk of accidental opening of the packaging structure 200, and be beneficial to improve the stability of the packaging structure 200.
[0064] In some embodiments, the first extension sheet 130 comprises a plurality of first structure sheets 131, and the second extension sheet 140 comprises a plurality of second structure sheets 141. Preferably, a third side panel 170 is connected to each of the first structure sheets 131, and a plug 180 is connected to each of the first structure sheets 141. Further, the side of the bottom plate 110 is connected with the third side panel 170, and the side of the top plate 120 is connected with the plug 180.
[0065] According to the preferred embodiment of the present application, the third side panel 170 comprises a standing sheet 171 and a bending sheet 172. The standing sheet 171 is rotatably connected to one of the first structure sheet 131 or the second structure sheet 141, the bending sheet 172 is rotatably connected to the standing sheet 171, and the connection position of the bending sheet 172 and the standing sheet 171 is parallel to the connection position of the standing sheet 171 and the first structure sheet 131 or the second structure sheet 141. After the blank 100 is folded into the packaging structure 200, the bending sheet 172 is bent relative to the standing sheet 171 to jointly define a slot.
[0066] As shown in Figure 1 , the standing sheet 171 is rotatably connected to the first structure sheet 131. During the folding of the blank 100 into the packaging structure 200, the standing sheet 171 is bent upward by about 90° relative to the first structure sheet 131, so that the standing sheet 171 is substantially perpendicular to the first structure sheet 131. The bending sheet 172 is bent by 180° relative to the standing sheet 171, and the bending sheet 172 is substantially perpendicular to the first structure sheet 131, thereby forming a slot between the bending sheet 172 and the standing sheet 171.
[0067] Preferably, as shown in Figure 1 , a through slot is formed between the first structure sheet 131 and the standing sheet 171, and one end of the bending sheet 172 can be inserted into the through slot, so that the position of the bending sheet 172 remains fixed, avoiding reverse rotation of the bending sheet 172 and causing the slot to fail.
[0068] The third side panel 170 in the present embodiment can form a double-layer structure, which is beneficial to improve the structural stability of the packaging structure 200.
[0069] In the preferred embodiment of the present application, the blank 100 further comprises a connecting portion 190. The connecting portion 190 is rotatably connected to the first side panel 150 and / or the second side panel 160. As shown in Figure 1 , the blank 100 comprises two connecting portions 190, one of which is rotatably connected to the first side panel 150, and the other of which is located between the first side panel 150 and the second side panel 160 and is rotatably connected to both the first side panel 150 and the second side panel 160.
[0070] After the blank 100 is folded into the packaging structure 200, the connecting part 190 is located in the slot defined by the bending piece 172 and the standing piece 171. The connecting part 190 can form a side of the packaging structure 200 together with the third side panel 170, and can further improve the structural stability of the packaging structure 200.
[0071] According to the preferred embodiment of the present application, the connecting part 190 comprises a plurality of connecting pieces 191, which are rotatably or detachably connected. After the first structure piece 131 and the second structure piece 141 are folded or removed, the length of the connecting part 190 is greater than the distance between the first side panel 150 and the second side panel 160. The connecting piece 191 can be folded or removed, and the folded connecting piece 191 can be fixed to the first side panel 150 or the second side panel 160.
[0072] For example Figure 2B and Figure 2C As shown, the connecting piece 191 is fixed to the first side panel 150 by folding. Further, the folding part 151 can be folded by 180° and fixed to the connecting piece 191 to improve the structural stability of the packaging structure 200.
[0073] Preferably, the size of the connecting piece 191 is matched with the size of the first structure piece 131 and the second structure piece 141. For example, the size of the connecting piece 191 is half of the size of the first structure piece 131 and the second structure piece 141.
[0074] In some embodiments of the present application, the plurality of connecting pieces 191 have spaced half-threaded lines and needle ruler lines. The half-threaded lines and the needle ruler lines are both discontinuous lines formed by the processing technology of the paper blank, so that the blank 100 can be relatively rotated while being connected.
[0075] In the present embodiment, the spaced half-threaded lines and needle ruler lines can reduce the stress inside the blank 100, so that the adjacent connecting pieces 191 are bent in opposite directions. For example, the connecting piece 191 connected to the first side panel 150 can be bent by 180° relative to the first side panel 150 and attached to the surface of the first side panel 150. Another connecting piece 191 connected to the connecting piece 191 can be bent by 180° in the opposite direction and attached to the surface of the connecting piece 191 away from the first side panel 150.
[0076] According to the preferred embodiment of the present application, the plurality of first structure pieces 131 and the plurality of second structure pieces 141 have half-threaded lines or needle ruler lines, and the structure of the blank 100 can be damaged at the connection positions of the plurality of first structure pieces 131 and the plurality of second structure pieces 141, so that the first structure pieces 131 and the second structure pieces 141 can be easily removed.
[0077] Preferably, in some embodiments, the side of the first structure piece 131 has a third side panel 170, and the side of the second structure piece 141 has a tongue 180. Correspondingly, a half-thread or a pin line can be broken or arranged between the corresponding third side panels 170 of the adjacent first structure pieces 131, and a half-thread or a pin line can be broken or arranged between the corresponding tongues 180 of the adjacent second structure pieces 141.
[0078] As shown in FIG. 1, the blank 100 is folded to form a packaging structure 200. Figures 2A-2C As shown in FIG. 1, the blank 100 is folded to form a packaging structure 200. Figure 2A As shown in FIG. 1, the blank 100 is folded to form a packaging structure 200. Figure 1 As shown in FIG. 1, the blank 100 is folded to form a packaging structure 200. Figure 2B As shown in FIG. 1, the blank 100 is folded to form a packaging structure 200. Figure 1 As shown in FIG. 1, the blank 100 is folded to form a packaging structure 200. Figure 2C As shown in FIG. 1, the blank 100 is folded to form a packaging structure 200. Figure 1 As shown in FIG. 1, the blank 100 is folded to form a packaging structure 200.
[0079] Finally, it should be noted that the above only describes the embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A blank of a packaging structure for folding and forming into a packaging structure, characterized in that, The blank comprises: a bottom panel; a top panel, which is opposite to the bottom panel after the blank is folded into a packaging structure; a first expansion sheet, which is rotatably or detachably connected to the bottom panel, the first expansion sheet comprising at least one first structure sheet, and when the first expansion sheet comprises a plurality of first structure sheets, the plurality of first structure sheets are rotatably or detachably connected to each other; a second expansion sheet, which is rotatably or detachably connected to the top panel, the second expansion sheet comprising at least one second structure sheet, and when the second expansion sheet comprises a plurality of second structure sheets, the plurality of second structure sheets are rotatably or detachably connected to each other; wherein the blank is configured to fold or remove the first structure sheet and the second structure sheet to change the volume of the packaging structure after being folded.
2. The blank of claim 1, wherein, The number of the first structure sheets is equal to the number of the second structure sheets, and the shapes and sizes of the first structure sheets and the second structure sheets are close.
3. The blank of claim 1, wherein, After the blank is folded into a packaging structure, the first structure sheet is coplanar with the bottom panel, and the second structure sheet is coplanar with the top panel.
4. The blank of claim 1, wherein, The blank further comprises: a first side panel, which is rotatably connected to the bottom panel, and the first side panel is located on the other side of the bottom panel connected to the first expansion sheet; a second side panel, which is rotatably connected to the top panel, and the second side panel is located on the other side of the top panel connected to the second expansion sheet.
5. The blank of claim 4, wherein, The blank further comprises: a third side panel, which is rotatably connected to one of the first structure sheet or the second structure sheet, and after the blank is folded into the packaging structure, the third side panel is perpendicular to the bottom panel and the top panel; a gusset, which is rotatably connected to the other one of the first structure sheet or the second structure sheet, and after the blank is folded into the packaging structure, the gusset is attached to the third side panel.
6. The blank of claim 5, wherein, The third side panel comprises: an upright panel, which is rotatably connected to one of the first structure sheet or the second structure sheet; a bending panel, which is rotatably connected to the upright panel, and after the blank is folded into the packaging structure, the bending panel is bent relative to the upright panel and defines a slot together with the upright panel.
7. The blank of claim 6, wherein, The blank further comprises: a connecting portion, which is rotatably connected to the first side panel and / or the second side panel; after the blank is folded into the packaging structure, the connecting portion is located in the slot defined by the bending panel and the upright panel.
8. The blank of claim 7, wherein, The connecting portion comprises a plurality of connecting panels, which are rotatably or detachably connected to each other.
9. The blank of claim 8, wherein, The plurality of connecting panels have half-threaded lines and needle gauge lines arranged at intervals.
10. The blank according to any one of claims 1-8, characterized in that, The plurality of first structure sheets and the plurality of second structure sheets have half-threaded lines or needle gauge lines.
11. A packaging structure characterized by, The packaging structure is made of the packaging structure blank of any one of claims 1-10.