Cushioning structure, packaging group and method for forming a cushioning structure

Abstract

A cushion structure, a packaging set and a method for forming the cushion structure. The cushion structure comprises at least one inner main layer, at least one outer main layer and a rib portion. An inner side of the inner main layer forms a receiving space. The outer main layer surrounds an outer side of the inner main layer. The rib portion is located between two first fold lines and forms a ring shape. The two first fold lines are parallel to each other. The rib portion is connected between the inner main layer and the outer main layer. One first fold line is connected to the inner main layer. The other first fold line is connected to the outer main layer. The cushion structure, the packaging set and the method for forming the cushion structure are provided. The rib portion is connected between the inner main layer and the outer main layer. The rib portion is located between the two first fold lines and forms a ring shape. One first fold line is connected to the inner main layer. The other first fold line is connected to the outer main layer. The cushion structure has the characteristics of low cost, high packaging efficiency and high protection capability.

Description

Technical Field

[0001] The present invention relates to a cushioning structure, a packaging assembly, and a method for forming a cushioning structure, and particularly to a cushioning structure comprising at least two layers, a packaging assembly comprising the cushioning structure, and a method for forming a cushioning structure. Background Technology

[0002] With technological advancements and the increasing convenience of daily life, the use of packaging units or packaging equipment for storing or transporting goods has greatly increased. At the same time, there are stringent requirements for packaging units to achieve low cost, high packaging efficiency, and high protective capabilities. For example, the existing cushioning structures within the boxes of packaging units are mostly single-layer designs, which are relatively weak and difficult to mold manually. Therefore, assembly requires a long time and high labor costs, making it difficult for existing cushioning structures to meet today's stringent requirements for packaging units.

[0003] Based on the above, in today's market for cushioning structures and packaging assemblies, there is an urgent need to develop a cushioning structure, packaging assembly, and cushioning structure formation method that takes into account low cost, high packaging efficiency, and high protective capability to solve the above problems. Summary of the Invention

[0004] This invention provides a cushioning structure, a packaging assembly, and a method for forming the cushioning structure. The cushioning structure is connected between the inner main layer and the outer main layer by ribs, and the ribs are located between two first fold lines to form a ring. One first fold line connects to the inner main layer, and the other first fold line connects to the outer main layer, so that the cushioning structure has the characteristics of low cost, high packaging efficiency, and high protection capability.

[0005] According to one embodiment of the present invention, a buffer structure is provided, comprising at least one inner main layer, at least one outer main layer, and a rib. An accommodating space is formed on the inner side of the inner main layer, and the outer main layer surrounds the outer side of the inner main layer. The rib is located between two first fold lines and forms a ring, the two first fold lines being parallel to each other, and the rib connecting the inner main layer and the outer main layer; one first fold line connects to the inner main layer, and the other first fold line connects to the outer main layer.

[0006] According to another embodiment of the present invention, a packaging assembly is provided, comprising the cushioning structure and box body described in the foregoing embodiments, wherein the box body is disposed on and connected to the outer or inner side of the cushioning structure.

[0007] According to another embodiment of the present invention, a method for forming a buffer structure is provided, comprising a structural material providing step, a first bending step, a rib forming step, and an accommodating space forming step. The structural material providing step comprises providing structural material, the structural material including two first fold lines and used for bending to form a buffer structure. The first bending step comprises bending along one first fold line to form an inner main layer, and bending along another first fold line to form an outer main layer. The rib forming step comprises forming a rib between one first fold line and the other first fold line. The accommodating space forming step comprises forming an accommodating space inside the inner main layer, the outer main layer surrounding the outer side of the inner main layer, and the rib forming a ring. Attached Figure Description

[0008] Figure 1 A perspective view of the buffer structure according to the first embodiment of the present invention is shown;

[0009] Figure 2A A flowchart illustrating a method for forming a buffer structure according to a second embodiment of the present invention is shown;

[0010] Figure 2B A schematic diagram illustrating the structural material in the structural material providing step of the buffer structure forming method according to the second embodiment of the present invention;

[0011] Figure 2C A schematic diagram illustrating the structural material in the first bending step of the buffer structure forming method according to the second embodiment of the present invention;

[0012] Figure 2D A schematic diagram illustrating the structural material of the rib formation step in the buffer structure formation method of the second embodiment of the present invention;

[0013] Figure 2E A schematic diagram illustrating the structural material of the accommodating space forming step in the buffer structure forming method of the second embodiment of the present invention;

[0014] Figure 3A A perspective view of the packaging assembly according to a third embodiment of the present invention is shown;

[0015] Figure 3B An exploded view of the packaging assembly according to a third embodiment of the present invention is shown;

[0016] Figure 4 An exploded view of the packaging assembly according to a fourth embodiment of the present invention is shown; and

[0017] Figure 5 A perspective view of the packaging assembly according to the fifth embodiment of the present invention is shown.

[0018] Explanation of key component symbols:

[0019] 100, 401, 501 buffer structures

[0020] 100a structural material

[0021] 110, 410, 510 Ribs

[0022] 111, 112 First break line

[0023] 120 Inner Main Layer

[0024] 122 Second Inner Fold Line

[0025] 124 inner face

[0026] 125 Openwork section

[0027] 126, 426 storage spaces

[0028] 130 Outer Main Layer

[0029] 132 Second outer fold line

[0030] 134 External

[0031] 140 Fixing part

[0032] 200 Buffer Structure Formation Method

[0033] 210 Structural Material Provision Steps

[0034] 220 First bending step

[0035] 230 Rib Formation Steps

[0036] 240 Second bending step

[0037] 250 Steps for forming the accommodating space

[0038] 260 Structural Fixing Steps

[0039] 300, 400, 500 packaging sets

[0040] 350, 450, 550 enclosures

[0041] 360, 460 contents

[0042] 370 Pallet Rack

[0043] 480 protection board

[0044] 590 pallets

[0045] 596 Top Cover

[0046] w1 width

[0047] t3 thickness

[0048] h2, h3 height

[0049] d5 clockwise direction

[0050] d6 Counterclockwise direction Detailed Implementation

[0051] Several embodiments of the present invention will now be described with reference to the accompanying drawings. For clarity, many practical details will be set forth in the following description. However, it should be understood that these practical details are not intended to limit the invention. That is, these practical details are not essential in the embodiments of the present invention. Furthermore, for the sake of simplicity in the drawings, some well-known and customary structures and elements will be illustrated in a simple schematic manner; and repeated elements may be denoted by the same reference numerals.

[0052] Furthermore, the terms "first" and "second" are used only to describe different components and do not restrict the components themselves. Therefore, the first component can also be referred to as the second component. Moreover, the combinations of components / units in this article are not combinations that are generally known, conventional, or publicly known in this field. Whether the components / units themselves are publicly known cannot be used to determine whether their combination relationships are easily performed by a person skilled in the art.

[0053] Figure 1 A perspective view of the buffer structure 100 according to the first embodiment of the present invention is shown below. Figure 1 The cushioning structure 100 includes at least one inner main layer 120, at least one outer main layer 130, and ribs 110. An accommodating space 126 is formed on the inner side of the inner main layer 120, and the outer main layer 130 surrounds the outer side of the inner main layer 120. The ribs 110 are located between two first fold lines (specifically, first fold lines 111 and 112) and form a ring. The first fold lines 111 and 112 are parallel to each other, and the ribs 110 connect the inner main layer 120 and the outer main layer 130. At least a portion of the ribs 110 is a plane with the same normal direction. Specifically, the first fold line 111 directly connects to the inner main layer 120, and the first fold line 112 directly connects to the outer main layer 130. Thus, the cushioning structure 100 combines low cost, high packaging efficiency, and high protective capability. Furthermore, the accommodating space 126 is used to accommodate the contents, and the cushioning structure 100 provides cushioning and protection to the contents. Furthermore, the ring formed by the ribs of the buffer structure according to the present invention can be a closed ring or an open ring with very small or large gaps, so as to form an accommodating space accordingly.

[0054] In detail, the buffer structure 100 can be integrally molded, meaning it can be formed from a single structure of any material, and the material can be elastic or inelastic. This allows the buffer structure 100 to reduce assembly time and costs on the production line, thus simultaneously offering the advantages of low cost, high manufacturing efficiency, and high stability. Furthermore, the buffer structure 100 can also be formed by assembling multiple structures of any material.

[0055] The cushioning structure 100 can be formed by bending a sandwiched cardboard or a sandwiched plastic sheet (i.e., a cardboard or a plastic sheet with a filling layer). Thus, the cushioning structure 100 formed by bending or folding is more rigid at the folds along the first fold lines 111, 112, each of the second outer fold lines 132, and each of the second inner fold lines 122, resulting in higher support strength. This contributes to the higher strength of the cushioning structure 100, thereby providing greater cushioning capacity for the contents of the accommodating space 126.

[0056] Rib 110 may be formed into a polygon. In the first embodiment, rib 110 may be formed into a rectangle, thereby making the buffer structure 100 a buffer structure on the inner or outer side of a rectangular box, in the most common way. According to other embodiments of the invention, the rib of the buffer structure may be formed into a circle, an ellipse, an equilateral or scalene triangle, a pentagon, a hexagon, etc., and is not limited thereto.

[0057] In the first embodiment, the outer main layer 130 may include four second outer fold lines 132 and five outer surfaces 134, with the four second outer fold lines 132 sequentially distinguishing the five outer surfaces 134, meaning the four second outer fold lines 132 and the five outer surfaces 134 are alternately arranged. The four second outer fold lines 132 are perpendicular to each of the first fold lines 111 and 112, and the four second outer fold lines 132 are parallel to each other. The inner main layer 120 may include four cutout portions 125 and five inner surfaces 124, with the four cutout portions 125 sequentially distinguishing the five inner surfaces 124, meaning the four cutout portions 125 and the five inner surfaces 124 are alternately arranged, and adjacent inner surfaces 124 may have contact or overlap on the cutout portions 125 within them, such as... Figure 1 As shown. Each cutout portion 125 is elongated and perpendicular to each of the first fold lines 111 and 112. The four cutout portions 125 are parallel to each other. The number of inner portions 124 and the number of outer portions 134 are the same, both being five. The five inner portions 124 correspond to and are parallel to the five outer portions 134. This helps the cushioning structure 100 to better match the shape of the box in the packaging assembly, thereby achieving better cushioning function.

[0058] In the first embodiment, the inner main layer 120 may further include four second inner fold lines 122, which correspond to four hollow portions 125 respectively, and each hollow portion 125 is located between the rib 110 and the corresponding second inner fold line 122. In this way, the shape of the buffer structure 100 can be stabilized by the second inner fold lines 122 corresponding to the hollow portions 125 respectively.

[0059] The width w1 of the rib 110 can be between 2 mm and 50 mm (inclusive, and similar expressions in this invention include the endpoint values ​​of the range). This helps the buffer structure 100 to have better buffering function and be less prone to deformation. In the first embodiment, the width w1 of the rib 110 is specifically 4 mm.

[0060] The thickness of the inner main layer 120 and the thickness t3 of the outer main layer 130 can be the same, and the ratio of the width w1 of the rib 110 to the thickness t3 of the outer main layer 130 can be between 2 and 16. This helps to prevent the buffer structure 100 from skewing, achieving a symmetrical and even buffering function. Furthermore, the ratio of the width w1 of the rib 110 to the thickness t3 of the outer main layer 130 is preferably between 2 and 6. Additionally, the difference between the width w1 of the rib 110 and the thickness t3 of the inner main layer 120 and the outer main layer 130 can be between 1.5 mm and 8 mm. Furthermore, the difference between the width w1 of the rib 110 and the thickness t3 of the inner main layer 120 and the outer main layer 130 is preferably between 2 mm and 3 mm. In the first embodiment, the width w1 of the rib 110 is specifically 4 mm, the thickness of the inner main layer 120 and the thickness t3 of the outer main layer 130 are both specifically 1 mm, the width w1 of the rib 110 minus the thickness of the inner main layer 120 and the thickness t3 of the outer main layer 130 is specifically 2 mm, and the ratio of the width w1 of the rib 110 to the thickness t3 of the outer main layer 130 is specifically 4.

[0061] The height h2 of the inner main layer 120 and the height h3 of the outer main layer 130 can be the same, such as Figure 1 and Figure 2B As shown. This allows the buffer structure 100 to have an average and complete buffering function in the height direction.

[0062] The buffer structure 100 may further include two fixing portions 140, which are connected to at least one of the outer main layer 130 and the inner main layer 120. The two fixing portions 140 are interconnected to stabilize the shape of the buffer structure 100. In this way, the ribs 110 of the buffer structure 100 form a closed ring or a near-closed ring (i.e., the gaps on the ring are extremely small), which is beneficial for the buffer structure 100 to have an average and complete buffering function in the ring direction.

[0063] The rib 110 can be formed into a polygon, and the position of each fixing part 140 corresponds to one side of the polygon. This helps to improve the molding efficiency of the buffer structure 100. According to an embodiment of the present invention, when the rib of the buffer structure is formed into a rectangle, and the positions of the two fixing parts of the buffer structure correspond to one side of the rectangle, the number of the second outer fold line and the number of hollow parts are both four, and the number of outer and inner parts are both five. The two outer parts or two inner parts respectively connected to the two fixing parts are located on said one side of the rectangle, for example... Figure 1 As shown. Furthermore, when the ribs of the buffer structure form a rectangle, and the positions of the two fixed parts of the buffer structure correspond to a corner of the rectangle, then the number of the second outer fold line and the number of the hollowed-out parts are both three, and the number of the outer part and the inner part are both four.

[0064] Please refer to Figure 1 The two fixing portions 140 can be directly connected to the outer main layer 130. The two fixing portions 140 extend from the outer main layer 130 along the annulus formed by the rib 110 in a clockwise direction d5 and a counterclockwise direction d6, respectively. The two fixing portions 140 interlock with each other, and both are located inside the outer main layer 130 and outside the inner main layer 120. This helps improve the molding convenience of the buffer structure 100. According to an embodiment of the present invention, the two fixing portions of the buffer structure can be fixed using a hook method (e.g., Figure 1 and Figure 2E The two fixing parts 140 shown can also be fixed by means of adhesive, tongue, etc., and are not limited to this.

[0065] According to embodiments of the present invention, the number of at least one inner main layer of the buffer structure can be at least two (not shown in the figure). The two inner main layers are distinguished by a third inner fold line, that is, the third inner fold line is the boundary between the two inner main layers. The third inner fold line is parallel to each of the two first fold lines. One inner main layer is located inside the outer main layer and outside the other inner main layer. In this way, the buffer structure with three or more layers from the inside out not only has better buffering function, but also has the advantage of high packaging efficiency.

[0066] According to embodiments of the present invention, the number of at least one outer main layer of the buffer structure can be at least two (not shown in the figure). The two outer main layers are distinguished by a third outer fold line, that is, the third outer fold line is the boundary between the two outer main layers. The third outer fold line is parallel to each of the two first fold lines, and one outer main layer is located outside the inner main layer and inside the other outer main layer. Thus, the buffer structure with three or more layers from the inside out not only has better buffering function but also has the advantage of high packaging efficiency.

[0067] Figure 2A A flowchart illustrating the buffer structure formation method 200 according to the second embodiment of the present invention is shown below. Figure 2AThe buffer structure forming method 200 includes a structural material providing step 210, a first bending step 220, a rib forming step 230, and an accommodating space forming step 250.

[0068] Figure 2B A schematic diagram illustrating the structural material 100a in step 210 of the buffer structure forming method 200 according to the second embodiment of the present invention is shown. Figure 2B The dashed lines in the diagram represent the first outer bend 111, 112, the second outer bend 132, and the second inner bend 122 in the buffer structure forming method 200. Please refer to... Figure 2A and Figure 2B Step 210 of providing structural material includes providing structural material 100a, which includes first fold lines 111 and 112, and is used to bend to form the aforementioned first embodiment. Figure 1 The buffer structure 100 in the middle.

[0069] Figure 2C A schematic diagram illustrating the structural material 100a in the first bending step 220 of the buffer structure forming method 200 according to the second embodiment of the present invention is shown below. Figure 2A and Figure 2C The first bending step 220 includes bending along the first fold line 111 to form the inner main layer 120, and bending along the first fold line 112 to form the outer main layer 130.

[0070] Figure 2D A schematic diagram illustrating the structural material 100a in the rib formation step 230 of the buffer structure formation method 200 according to the second embodiment of the present invention is shown below. Figure 2A and Figure 2D The rib forming step 230 includes causing a rib 110 to be formed between the first fold lines 111 and 112, wherein at least a portion of the rib 110 is a plane with the same normal direction.

[0071] Figure 2E A schematic diagram illustrating the structural material 100a in the accommodating space forming step 250 of the buffer structure forming method 200 according to the second embodiment of the present invention is shown below. Figure 1 , Figure 2A as well as Figure 2E The accommodating space forming step 250 includes causing an accommodating space 126 to be formed on the inner side of the inner main layer 120, the outer main layer 130 surrounding the outer side of the inner main layer 120, and the ribs 110 forming an annular shape, and as shown... Figure 1 and Figure 2E As shown. In this way, the buffer structure 100 formed by the buffer structure forming method 200 can be used to support the contents (i.e., the main body of the packaging), which not only makes the packaging method simple, but is also easy to apply to the inner or outer side of the packaging assembly and its box where packaging strength needs to be increased.

[0072] In detail, the outer main layer 130 may include a plurality of second outer fold lines 132, and the inner main layer 120 may include a plurality of cutout portions 125. Each cutout portion 125 and each second outer fold line 132 is perpendicular to each of the first fold lines 111 and 112. The number of cutout portions 125 is the same as the number of second outer fold lines 132, and each cutout portion 125 corresponds to a second outer fold line 132. In addition, the inner main layer 120 may also include a plurality of second inner fold lines 122, which correspond to a plurality of cutout portions 125. Each cutout portion 125 is located between the rib 110 and the corresponding second inner fold line 122.

[0073] Please refer to Figure 2A and Figure 2E The cushioning structure forming method 200 may further include a second bending step 240, which includes bending along the second outer fold line 132 to form a plurality of outer surfaces 134, and bending along the cutout portion 125 and the second inner fold line 122 to form a plurality of inner surfaces 124. This helps the cushioning structure 100 to better match the shape of other components in the packaging assembly, thereby achieving better cushioning functionality.

[0074] Please refer to Figure 2B The structural material 100a may also include two fixing parts 140, which are respectively connected to the two ends of one of the outer main layer 130 and the inner main layer 120 (specifically, connected to the outer main layer 130) along two opposite directions of the first fold lines 111 and 112.

[0075] Please refer to Figure 1 and Figure 2A The buffer structure forming method 200 may further include a structure fixing step 260, which includes causing the two fixing parts 140 to engage with each other to stabilize the shape of the buffer structure 100, such as... Figure 1 As shown. This allows the buffer structure 100 to have an average and complete buffering function in the circumferential direction.

[0076] Figure 3A A perspective view of the packaging assembly 300 according to a third embodiment of the present invention is shown. Figure 3B An exploded view of the packaging assembly 300 according to a third embodiment of the present invention is shown. Please refer to... Figure 3A and Figure 3B The packaging assembly 300 includes the cushioning structure 100 and the box 350 described in the first embodiment above. The box 350 is disposed on and connected to the outside or inside of the cushioning structure 100. In this way, the packaging assembly 300 combines the characteristics of low cost, high packaging efficiency, and high protection capability.

[0077] Specifically, the box 350 is disposed, connected to, and surrounds the outside of the cushioning structure 100. The packaging assembly 300 also includes contents 360, which are disposed within the receiving space 126 of the cushioning structure 100. This provides a packaging solution for the contents 360 that balances low cost, high packaging efficiency, and high protection.

[0078] The packaging assembly 300 may further include a tray frame 370, the four sides of which are supported on the ribs 110 of the cushioning structure 100. The center of the tray frame 370 is concave to allow the contents 360 to be supported on the tray frame 370. In this way, the cushioning structure 100, together with the tray frame 370, helps to provide better cushioning according to the shape of the contents 360.

[0079] The cushioning structure 100 can be integrally formed by bending a single corrugated paper (i.e., a single-layer corrugated cardboard), and the rib 110 can form a rectangle. In this way, the cushioning structure 100 formed by bending is a double-layer cushioning structure (i.e., an outer main layer 130 and an inner main layer 120), and its protective strength is greater than that of the single-layer cushioning structure using thicker materials (such as double-wall corrugated paper) in the prior art.

[0080] Figure 4 An exploded view of the packaging assembly 400 according to a fourth embodiment of the present invention is shown below. Figure 4 The packaging assembly 400 includes a cushioning structure 401 and a box 450 according to the present invention.

[0081] Specifically, the box body 450 is specifically disposed, connected to, and surrounds the outside of the cushioning structure 401. The packaging assembly 400 also includes contents 460, which are disposed in the receiving space 426 of the cushioning structure 401. The cushioning structure 401 can be formed by integrally bending a single corrugated cardboard, and the ribs 410 of the cushioning structure 401 form a rectangle. Furthermore, two protective plates 480 are respectively disposed on the upper and lower sides of the cushioning structure 401.

[0082] Figure 5 A perspective view of the packaging assembly 500 according to the fifth embodiment of the present invention is shown below. Figure 5 The packaging assembly 500 includes a cushioning structure 501 and a plurality of boxes 550 according to the present invention.

[0083] In detail, multiple boxes 550 are stacked on pallet 590. The boxes 550 are positioned and connected to the inner side of a cushioning structure 501, which surrounds the boxes 550. A top cover 596 is positioned on the upper side of both the boxes 550 and the cushioning structure 501. The packaging assembly 500 also includes multiple contents (not shown in the figure), which are respectively placed within the box housing spaces of the boxes 550, or more precisely, within the housing spaces of the cushioning structure 501. The cushioning structure 501 protects the multiple boxes 550 and their contents. The cushioning structure 501 can be formed by integrally bending a single corrugated cardboard piece, and the ribs 510 of the cushioning structure 501 form a rectangle.

[0084] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Any person skilled in the art should be able to make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the appended claims.

Claims

1. A buffer structure, the buffer structure comprising: At least one inner main layer, wherein an accommodating space is formed on the inner side of the inner main layer; At least one outer main layer, which surrounds the outer side of the inner main layer; and A rib is located between two first fold lines and forms a ring. The two first fold lines are parallel to each other, and the rib connects the inner main layer and the outer main layer. One of the first fold lines connects the inner main layer, and the other first fold line connects the outer main layer. The outer main layer includes multiple second outer fold lines and multiple outer surfaces. The outer surfaces are distinguished sequentially by the second outer fold lines. Each second outer fold line is perpendicular to each first fold line, and the second outer fold lines are parallel to each other. The inner main layer includes multiple cutouts and multiple inner faces. The cutouts sequentially distinguish the inner faces. Each cutout is a long strip and perpendicular to the first fold line. The cutouts are parallel to each other. The number of inner faces is the same as the number of outer faces. The inner faces correspond to and are parallel to the outer faces. The rib forms a polygon; The inner main layer also includes multiple second inner fold lines, which correspond to the corresponding hollow parts. Each hollow part is located between the rib and the corresponding second inner fold line, so that two adjacent inner parts overlap on the hollow part located therein.

2. The buffer structure as described in claim 1, wherein the buffer structure is integrally formed.

3. The cushioning structure as claimed in claim 1, wherein the cushioning structure is formed by bending a sandwiched cardboard or a sandwiched plastic sheet.

4. The buffer structure as claimed in claim 1, wherein the width of the rib is between 2 mm and 50 mm.

5. The buffer structure as claimed in claim 1, wherein the thickness of the inner main layer and the thickness of the outer main layer are the same, and the ratio of the width of the rib to the thickness of the outer main layer is between 2 and 16.

6. The buffer structure as described in claim 1, wherein the height of the inner main layer and the height of the outer main layer are the same.

7. The buffer structure as described in claim 1, further comprising: Two fixing parts are connected to at least one of the outer main layer and the inner main layer. The two fixing parts are connected to each other to stabilize the shape of the buffer structure.

8. The buffer structure as claimed in claim 7, wherein the rib forms a polygon, and the position of each of the fixing portions corresponds to one side of the polygon.

9. The buffer structure as claimed in claim 7, wherein the two fixing parts are connected to the outer main layer, the two fixing parts extend from the outer main layer along the annulus in a clockwise direction and a counterclockwise direction respectively, the two fixing parts are engaged with each other, and both fixing parts are located on the inner side of the outer main layer and the outer side of the inner main layer.

10. The buffer structure of claim 1, wherein the number of the at least one inner main layer is at least two, the two inner main layers are distinguished by a third inner fold line, the third inner fold line is parallel to each of the first fold lines, and one inner main layer is located inside the outer main layer and outside the other inner main layer.

11. The buffer structure as claimed in claim 1, wherein the number of the at least one outer main layer is at least two, the two outer main layers are distinguished by a third outer fold line, the third outer fold line is parallel to each of the first fold lines, and one outer main layer is located outside the inner main layer and inside the other outer main layer.

12. A packaging unit comprising: The buffer structure as described in any one of claims 1-11; as well as A housing, which is disposed on and connected to the outside or inside of the buffer structure.

13. The packaging assembly of claim 12, wherein the box is disposed and connected to the outside of the cushioning structure, and the packaging assembly further comprises: A content, which is disposed in the accommodating space of the buffer structure.

14. The packaging assembly of claim 13, further comprising: A pallet holder supported on the rib of the cushioning structure, wherein the contents are supported on the pallet holder.

15. The packaging assembly of claim 12, wherein the cushioning structure is integrally formed by bending a single corrugated cardboard, and the rib is formed into a rectangle.

16. A method for forming a buffer structure, the method comprising: A structural material providing step includes providing a structural material, the structural material including two first fold lines and used to bend to form a buffer structure; A first bending step, the first bending step including bending along one of the first fold lines to form an inner main layer, and bending along another of the first fold lines to form an outer main layer; A rib forming step, the rib forming step including causing a rib to be formed between one of the first fold lines and another of the first fold lines; and A space-forming step includes causing a space-forming space to be formed on the inner side of the inner main layer, the outer main layer surrounding the outer side of the inner main layer, and the rib forming a ring. The outer main layer includes multiple second outer fold lines, and the inner main layer includes multiple hollow portions. Each hollow portion and each second outer fold line is perpendicular to each first fold line. The number of hollow portions and the number of second outer fold lines are the same. Each hollow portion corresponds to each second outer fold line. The inner main layer also includes multiple second inner fold lines, which correspond to each hollow portion. Each hollow portion is located between the rib and the corresponding second inner fold line, such that two adjacent inner surfaces overlap on the hollow portion located therein. The method for forming the buffer structure also includes: A second bending step includes bending along the second outer fold lines to form a plurality of outer faces, and bending along the cutouts and the second inner fold lines to form a plurality of inner faces.

17. The method for forming a buffer structure as described in claim 16, wherein the structural material further includes two fixing portions, the two fixing portions being connected to two ends of one of the outer main layer and the inner main layer along two opposite directions of the two first fold lines; in, The method for forming this buffer structure also includes: A structural fixing step includes causing the two fixing parts to engage with each other to stabilize the shape of the buffer structure.

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