A packaging structure

Abstract

The present disclosure relates to a packaging structure formed by a plurality of hollow close-packed cells, the upper end of the close-packed cells being open and comprising a plurality of walls, wherein at least one of the plurality of walls is provided with a weakening arranged in the height direction, the wall being formed of tearable material.

Description

Technical Field

[0001] This disclosure relates to the field of packaging, and more specifically to a packaging structural component. Background Technology

[0002] Currently, with the rapid development of e-commerce and offline retail, both consumers and brands are placing greater demands on product protection and sustainable development. Generally, product packaging requires good support and cushioning to protect the items and provide a smooth opening experience for consumers. In offline retail scenarios, single or multiple products in gift boxes often need to be placed in fixed positions. In e-commerce packaging scenarios, when one or more items need to be transported in a single box, to ensure that the items are not damaged during transportation, it is desirable for each item's packaging to be independent, avoiding mutual interference between the item and the box or between different items. Traditional packaging often uses pre-formed paper or plastic inner cards. Considering the large demand in e-commerce and gift box businesses, lower manufacturing costs for packaging structures, more environmentally friendly materials, and structures that are more flexible and adaptable to different item sizes are also desired. Therefore, there is a continuous need for improvement in product packaging structures. Summary of the Invention

[0003] According to one or more aspects of this disclosure, this disclosure provides a packaging structure formed by a plurality of hollow, closely spaced units, the upper ends of the closely spaced units being open and including a plurality of walls, wherein at least one of the plurality of walls is provided with a weak portion arranged along the height direction, the wall being formed of a tearable material.

[0004] According to one or more aspects of this disclosure, the weak portion is configured as a cut-off portion on the wall.

[0005] According to one or more aspects of this disclosure, the cut-off portions are provided in a plurality along the height direction of the wall.

[0006] According to one or more aspects of this disclosure, the dimensions of the plurality of cut-out portions gradually decrease downwards along the height direction from the upper end of the tiling unit, forming a gradient.

[0007] According to one or more aspects of this disclosure, the plurality of cut-off portions are arranged at equal intervals along the height direction of the wall.

[0008] According to one or more aspects of this disclosure, the cut-off portion is disposed at an intermediate position along the width direction of the wall.

[0009] According to one or more aspects of this disclosure, the tiling unit is a honeycomb unit in the form of a regular hexagon.

[0010] According to one or more aspects of this disclosure, the walls of the honeycomb cells are formed of paper.

[0011] According to one or more aspects of this disclosure, the cut-off portion is configured to form a hole.

[0012] According to one or more aspects of this disclosure, the cell side length of the honeycomb unit is set between 5mm and 12mm, optionally between 6mm and 15mm, optionally between 7mm and 14mm, optionally between 8mm and 12mm, optionally greater than 4mm, and optionally 10mm.

[0013] According to one or more aspects of this disclosure, the gradient diameter of the hole is in the range of 1 mm to 5 mm.

[0014] According to one or more aspects of this disclosure, when the cell side length of the honeycomb unit is 5 mm, the gradient diameter range of the holes is set to 1 mm-2.5 mm.

[0015] According to one or more aspects of this disclosure, when the cell side length of the honeycomb unit is 12 mm, the gradient diameter range of the holes is set to 2 mm-5 mm.

[0016] According to one or more aspects of this disclosure, the spacing between the edges of adjacent holes is set to 10%-200% of the maximum hole diameter.

[0017] According to one or more aspects of this disclosure, the maximum aperture is set to be greater than 40% of the cell side length of the honeycomb cell, and optionally greater than 50% of the cell side length of the honeycomb cell.

[0018] According to one or more aspects of this disclosure, the minimum aperture is set to be less than 50% of the cell side length of the honeycomb cell.

[0019] According to one or more aspects of this disclosure, the basis weight range of the paper is set at 110 g / m². 2 and 170g / m 2 Between, 110g / m 2 and 140g / m 2 between.

[0020] According to one or more aspects of this disclosure, the hole is at least one of a circular hole, an elliptical hole, a rectangular hole, and a square hole.

[0021] According to one or more aspects of this disclosure, each of the plurality of walls is provided with the weak portion.

[0022] According to one or more aspects of this disclosure, the lower end of the packaging structure is open.

[0023] According to one or more aspects of this disclosure, the cut-off portion is configured as a slit.

[0024] According to one or more aspects of this disclosure, the weak portion is configured as a tear line extending along the height direction.

[0025] According to one or more aspects of this disclosure, the packaging structure includes a bottom support that is detachably attached to the bottom.

[0026] Other features and advantages of this disclosure will become clearer from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0027] The foregoing and other features and advantages of this disclosure will become clear from the following description of embodiments illustrated in conjunction with the accompanying drawings. The drawings, incorporated herein and forming a part of the specification, are further used to explain the principles of this disclosure and to enable those skilled in the art to make and use it. Wherein:

[0028] Figure 1 This is a perspective view of a packaging structure according to a first embodiment of the present disclosure;

[0029] Figure 2 This is a front view of a packaging structure according to a first embodiment of the present disclosure;

[0030] Figure 3 This is a force analysis diagram of a closely spaced element;

[0031] Figure 4 This is a top-view schematic diagram of the tiling unit, in which tearing behavior has already occurred;

[0032] Figure 5 This is a schematic diagram of the use of the packaging structure according to the first embodiment of the present disclosure;

[0033] Figure 6 This is a top view of the tiling unit;

[0034] Figure 7 This is a perspective view of a packaging structure according to a second embodiment of the present disclosure;

[0035] Note that in the embodiments described below, the same reference numerals are sometimes used across different figures to denote the same parts or parts with the same function, and repeated descriptions are omitted. In some cases, similar reference numerals and letters are used to denote similar items, so once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0036] For ease of understanding, the positions, dimensions, and extents of the structures shown in the accompanying drawings and other materials may not represent actual positions, dimensions, and extents. Therefore, this disclosure is not limited to the positions, dimensions, and extents disclosed in the accompanying drawings and other materials. Moreover, the drawings are not necessarily drawn to scale, and some features may be enlarged to show details of specific components. Detailed Implementation

[0037] Exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the following descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. Those skilled in the art will understand that these embodiments merely illustrate exemplary ways in which the present disclosure can be implemented, and are not exhaustive. Furthermore, unless specifically stated otherwise, the relative arrangement of components, numerical expressions, and values ​​set forth in these embodiments do not limit the scope of the present disclosure. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification.

[0038] This disclosure provides a packaging structure formed by a plurality of hollow, closely spaced units, the upper and lower ends of which are open and include a plurality of walls, wherein at least one of the plurality of walls is provided with a weak portion arranged along the height direction, and the wall is formed of a tearable material.

[0039] Figure 1 This is a perspective view of the packaging structure 1 according to the first embodiment of this disclosure. Figure 1 As shown, the packaging structure 1 in this embodiment is formed by multiple hollow close-laid units 2.

[0040] The term "tessellation" refers to the process of piecing together one or more planar shapes to completely cover a surface without gaps or overlaps. A "tessellation unit" refers to a basic three-dimensional unit composed of one or more planar shapes, which are then pieced together to form a three-dimensional package. Tessellation units can include, for example, equilateral triangular tessellation units, regular quadrilateral tessellation units, regular hexagonal tessellation units, etc. In the packaging industry, single regular hexagonal tessellation units are commonly used to form a honeycomb structure; however, it should be understood that, as mentioned above, this disclosure is not limited to single regular hexagonal tessellation units, but can include, for example, equilateral triangular tessellation units, regular quadrilateral tessellation units, or other tessellation units and combinations thereof.

[0041] like Figure 1The upper end portion 20 of the tiling unit 2 in this embodiment includes multiple walls 23. In this embodiment, the lower end portion 21 is also open; however, it should be understood that the lower end portion can be closed. Furthermore, the use of directional terms (e.g., upper and lower) herein is corresponding, but depending on factors such as the state of use, the corresponding directional terms may be reversed. An edge 25 is formed where the three walls intersect. Figure 1 In the illustrated embodiment, the tiling unit 2 is configured as a single regular hexagonal tiling unit or a honeycomb unit, thus the tiling unit 2 includes six walls. Through these multiple walls, the tiling unit forms a hollow structure surrounded by multiple walls. This configuration allows for significant material savings while maintaining support functionality, and also provides good cushioning under compression or impact. Furthermore, the hollow structure allows the tiling unit to be folded under certain conditions, facilitating storage and transportation. In other words, the hollow structure allows the packaging structure to be folded... Figure 1 The unfolded structure shown can be easily switched between the folded structure (not shown).

[0042] Furthermore, at least one of the walls 23 of the tiling unit 2 is provided with a weak portion arranged along the height direction. The term "weak portion" refers to a part whose strength (e.g., tensile strength or compressive strength) is weakened relative to the rest. When the material is subjected to tension or compression, it will break or tear first at the weak portion due to stress concentration. In this embodiment, by providing a weak portion on the wall, when the article is pressed down from above, the tiling unit directly below the article will be subjected to downward pressure, and the wall located below the edge of the article will generate tension relative to the unpressed portion. Due to the presence of the weak portion, this tension will cause the wall to tear. The following will analyze the forces on the tiling unit and the weak portion when the packaging structure is compressed.

[0043] In this text, the weak portion may also include a cut-off portion, a tear line, or a weak portion made of a material with a different tear strength than the rest of the wall. The term "cut-off portion" means removing a portion of the wall material to reduce its strength. A cut-off portion may include a hole, a slit, etc.

[0044] In this embodiment, the weak point is provided as a hole 24. It should be understood that the holes disclosed herein do not necessarily mean that they are circular holes unless explicitly stated otherwise. In this disclosure, holes may include circular holes, elliptical holes, square holes, etc. For packaging structural components, it is relatively easy to perform perforation processing, so the manufacturing cost is relatively low.

[0045] Figure 2 A front view of the packaging structure 1 according to the first embodiment of this disclosure is shown, from which the distribution of the holes 24 can be seen more clearly. Figure 2As shown, in this embodiment, multiple holes 24 are provided and are disposed on the walls of the tiling unit in the height direction of the tiling unit. In this embodiment, the holes 24 are disposed on all six walls of the tiling unit. It should be understood that the holes can be disposed on one or more walls of the tiling unit as needed.

[0046] The following reference Figure 3 The force analysis diagram of the tiling unit shown is used to more clearly explain the working principle of the packaging structure of this application. Figure 3 The analysis takes a single regular hexagonal tiling unit, also known as a honeycomb tiling unit, as an example.

[0047] A key characteristic of structures formed by closely spaced elements is that they can be crushed under axial loads. For example... Figure 3 As shown, when pressure is applied to the top of a tiled cell, the tiled cell will tend to fold downwards or collapse. Figure 3 The arrow F in the diagram represents the downward pressure acting on the edge (where the three walls meet) of the tessellated unit.

[0048] First, the description will be in Figure 3 The deformation behavior when a uniform force F is applied to all the tiling units is described. At this point, the force F is uniform across all the tiling units, and when the initial pressure F is applied, the upper part of the wall will be crushed and folded first. Subsequently, the crushed and folded upper part transmits the force to the middle and lower parts of the wall. The crushed and folded portion of the wall increases the stress-bearing area due to the crushing and folding, and also acts as a support, requiring a larger force to be applied if the force needs to be transmitted further downwards. Thus, all the tiling units in the same layer are crushed and folded simultaneously. In fact, as crushing progresses, the required force increases almost exponentially. Because the packaging structure composed of honeycomb tiling units has the same structure in each layer and is approximately isotropic, it has good structural stability. Generally, a large force is required to crush it, and the weight of commonly used items placed on the honeycomb tiling units does not easily deform the tiling structure. Therefore, the above structure has excellent compressive and bending resistance.

[0049] The deformation behavior when a pressure F is applied to one or more tessellation cells will then be described. Since there is no downward pressure F on adjacent tessellation cells, when the wall of a tessellation cell to which pressure F is applied exhibits a downward crushing tendency, the adjacent edges (e.g., Figure 3 As shown, edges 250 and 251 tend to move relative to each other, so the uncompressed edge 251 will exert a pulling force on the compressed edge 250, that is, the wall 230 located below the edge of the object will be subjected to such a force. Figure 3The tensile force F1 is shown in the direction away from the edge where the force is applied. The presence of this tensile force F1 makes it more difficult for the tiling unit to be crushed. Therefore, packaging structures composed of honeycomb tiling units can be used to support items of various shapes, regardless of whether their area is larger or smaller than the footprint of the packaging structure.

[0050] In this embodiment, the walls of the tiled unit are made of a tearable material. For example, paper or aramid paper can be used as the tearable material. Tearable materials are prone to tearing under shear force; therefore, when pressure is applied to one or more tiled units as described above, there is a possibility that the wall 230 between the unpressed edge 251 and the pressurized edge 251 may be torn by shear force. However, since the walls of the tiled unit typically have a certain supporting function, the tiled unit usually collapses before tearing.

[0051] Reference Figure 3 Because the compressed tessellated units tend to move downwards, the tension F1 gradually shifts from horizontal to diagonally downwards. Therefore, a vertical component of the force exists during the crushing process, causing the surrounding uncompressed tessellated units to gradually crush as well, thus spreading the crushing behavior horizontally. In many cases, this horizontal spread of crushing occurs before the wall tears, meaning it happens before the pressure reaches the level required to tear the wall. In other words, a clear tear zone (ideally a completely vertical tear) cannot form between the compressed and uncompressed tessellated units (in this context, compressed and uncompressed refer to whether the pressure is directly applied from above, such as by an object)—making it impossible to form a clear tear zone (ideally a completely vertical tear). This prevents the item from being properly compressed into the packaging structure, or even if it is, it cannot be properly wrapped. Further details will follow. Figure 6 A more detailed description of the package behavior is provided.

[0052] The applicant discovered that by creating weak points in the walls of the tiling unit, when pressure F is applied to the tiling unit, the wall below the edge of the item is easily torn, making the tiling unit below the edge of the item easier to separate from the surrounding tiling units and be crushed and folded. Furthermore, from the above analysis of the crushing behavior of the tiling unit, it can be seen that when the tiling unit is crushed, stronger support gradually forms underneath. At this time, because it is torn at the weak point, horizontal crushing spread is prevented, and the surrounding tiling units form a surrounding structure, which also provides good protection.

[0053] The following will refer to Figure 4 Describing a tiling unit according to an embodiment of the present disclosure, Figure 4 This is a top plan view of a tiling unit according to a first embodiment of the present disclosure.

[0054] Figure 4 The bolded portion represents the closely spaced cells under pressure, and Figure 4 The pressure-bearing tiling unit shown has torn apart from the surrounding tiling units. (As...) Figure 4 As shown, due to the presence of weak points, these weak points will form stress concentration points, making them prone to tearing under stress. This facilitates the tearing of the stressed close-tiled elements and adjacent close-tiled elements, ultimately leading to... Figure 4 The tiling unit below the stress area shown is completely torn apart from the adjacent tiling unit.

[0055] Figure 5 A schematic diagram of the use of a packaging structure according to a first embodiment of the present disclosure is shown, wherein, for better illustration of the crushing and tearing effects, Figure 5 The lower part is partially transparent for clearer display. For example... Figure 5 As shown, when an item is placed on top of the packaging structure in this embodiment and pressure is applied, the item will press down on the tiling unit located below it, causing the tiling unit below the item to collapse under the pressure. Furthermore, due to the presence of weak points, the walls of the tiling units below the edge of the item will tear from their weak points. As the item is further pressed down or the depth of the collapse increases, the walls of the tiling units directly below will collapse and fold. The already collapsed and folded walls will gradually increase in the force required for further collapse due to the increased area after folding and the stacking effect, thus providing good support. Simultaneously, because the tearing at the weak points prevents the horizontal spread of collapse, the tiling units separated from the collapsed tiling units will retain their original shape due to the structural stability of the tiling units themselves, thereby forming a containment space that is substantially similar to the shape of the item to wrap it. Thus, good packaging of the item can be achieved.

[0056] As can be seen from the above description, in this embodiment, the closely spaced structure is crushed vertically under pressure, forming a recess for accommodating the product. Simultaneously, the inclusion of weak points on the walls of the closely spaced structure prevents the crushing from spreading horizontally, ensuring a clear tear zone between the pressure-bearing and unpressured closely spaced units, thereby achieving effective wrapping of the item.

[0057] Typically, honeycomb tile structures or honeycomb cardboard are used to support objects. Through theoretical analysis and experimental verification (the experiments will be described in detail below), the applicant has for the first time discovered that honeycomb tile structures and honeycomb cardboard can be used to wrap or package items. Furthermore, as mentioned above, because the tile structure is crushed vertically, items can be pressed into the honeycomb tile structure, and the bottom still has good support after being pressed in. The design of weak points prevents the horizontal spread of crushing in the tile structure, thus providing excellent wrapping for items. In addition, the honeycomb tile structure of the embodiments of this disclosure is simple to construct, easy to manufacture, and very convenient to use. It only requires pressing items into the honeycomb tile structure; there are no restrictions on the shape of the items, and after different items are pressed in, the uncompressed tile units separate the items, providing independent protection for each item.

[0058] Return again Figure 1 and Figure 2 As can be seen, in this embodiment, multiple holes 24 are provided, and they are arranged in a gradient along the height direction of the wall. Specifically, the size of the holes gradually decreases from the upper end to the lower end of the wall. Larger holes mean lower strength at that point, i.e., they are more prone to tearing. Therefore, the holes with decreasing size in the height direction mean that the crushing force and tearing force of each layer of tessellation unit also increase in a gradient. Therefore, under the same pressure, the upper tessellation unit will be more easily crushed first, while the lower tessellation unit will require a greater force to crush. Thus, when the item is pressed down, the upper part of the tessellation unit that first contacts the item is crushed first, and it is also more likely to tear and separate from the surrounding tessellation units. As crushing progresses, the crushed tessellation unit will also fold up and combine with the smaller holes below, making it necessary to apply a greater force to crush the lower tessellation unit. Thus, the gradient arrangement of the holes allows for a more effective layer-by-layer or progressive crushing effect in the height direction, avoiding the simultaneous or initial deformation of other parts during the process of the item being pressed into the packaging structure, which would affect the overall effect.

[0059] In this embodiment, the gradient-set holes begin at the top end of the wall along its height direction but do not extend across the entire height of the wall, i.e., they do not completely extend to the bottom end. It should be understood that this is not a limitation; the size, spacing, and extension distance of the holes can be set as needed. In this embodiment, the holes are positioned approximately in the middle along the width direction of the wall. It should be understood that the holes can also be positioned closer to any edge along the width direction of the wall.

[0060] The following section will further discuss the effects of hole spacing, hole shape, paper weight, and side length of honeycomb hexagonal structure on the packaging of goods through experiments.

[0061] First, multiple packaging structural components were prepared for quasi-static compression tests. In this embodiment, the packaging structural components adopted a honeycomb structure. For the quasi-static compression test, a GK-KY25 carton compression testing machine (available from Suzhou Susheng Testing Group Co., Ltd.) was used. The compression speed was 1 mm / min, and the compression depth was determined by completely pressing the item into the honeycomb structure (at which point the corresponding stress increased sharply). The item was a regular cylinder with a height of approximately 60 mm and a diameter of approximately 60 mm. Table 1 below shows the basic information of each sample:

[0062] Table 1

[0063]

[0064] The parameter information is explained below.

[0065] Regarding sample dimensions, these represent the length, width, and height dimensions of the packaging structure. Regarding unit arrangement, these represent the number of units arranged longitudinally and laterally. Regarding unit side length, these represent the side length of the hexagon in the honeycomb structure. Regarding maximum and minimum aperture, these represent the maximum and minimum longitudinal dimensions of the aperture. For example, in the case of a circular aperture, the maximum aperture represents the maximum diameter of the aperture, and the minimum aperture represents the minimum diameter of the aperture. In the case of an elliptical aperture, the maximum aperture represents the maximum diameter along the major axis of the aperture, and the minimum aperture represents the minimum diameter along the major axis of the aperture. Regarding aperture spacing, this represents the vertical spacing between adjacent edges of adjacent apertures. Regarding paper basis weight, this represents the basis weight of the paper constituting the honeycomb structure. Furthermore, it should be noted that the comparison between the above samples should be understood as a comparison between different embodiments of this application, not a comparison with the prior art, and the experimental comparisons below should also be understood in this way.

[0066] 1. First, we will discuss the influence of the unit side length. The unit side length of a honeycomb structure mainly affects how tightly the item is wrapped; the smaller the unit side length, the better the item is wrapped. Figure 6 A top view of the honeycomb structure is shown, with the shaded areas representing the honeycomb cells located beneath the test specimen.

[0067] As can be seen, in an ideal scenario, let the top-view area of ​​the test object be S, the number of honeycomb cells directly beneath it be m, and the number of honeycomb cells covering its edges be n. When the object is pressed into the honeycomb structure, as mentioned earlier, the walls of the honeycomb cells located below the edges of the object are torn. Therefore, the number of crushed and torn honeycomb cells is (m+n), and the area of ​​these honeycomb cells can be expressed as S1, that is, S1 = (m+n) x S 蜂窝状单元We can define α = S / S1 to represent the tightness of the wrapping of the item. Furthermore, the side length of the honeycomb unit is defined as l. Based on simple geometric relationships, we can obtain:

[0068]

[0069] Obviously, the smaller l is, the larger α is, and the tighter the item is wrapped, that is, the better the wrapping effect. However, l should not be too small, as a small l leads to difficulties in the production of honeycomb structures. Specifically, for example, if l is less than 4 mm, the tensile force during production will be higher than the interlayer bonding force that the paper can withstand, causing the paper to break.

[0070] Therefore, based on theoretical derivation and testing, setting the unit side length within the range of 5mm-12mm is suitable. Preferably, the unit side length can be set to 10mm. In the above samples, a length of 10mm (within a certain range) was used as the unit side length.

[0071] Furthermore, it should be understood that this disclosure is not limited to a side length of 10 mm, and other suitable unit side lengths may be used according to actual circumstances, as long as they do not violate the above-mentioned theory in this disclosure.

[0072] 2. The effects of hole size, spacing, and paper basis weight on crushing and tearing behavior will be further discussed below. Hole size, spacing, and paper basis weight all affect the ease of crushing the honeycomb structure; therefore, all three factors jointly determine the ease of crushing. As mentioned earlier, the packaging of articles in this disclosure is achieved through layer-by-layer or progressive crushing of the honeycomb units beneath the article and tearing of the walls below the article's edge (or between honeycomb units below the article's edge and adjacent honeycomb units). Larger hole sizes result in lower strength of the honeycomb units, making tearing easier. Smaller hole sizes result in higher strength of the honeycomb units, making tearing more difficult. Larger hole spacing results in higher strength of the honeycomb units, making tearing more difficult. Smaller hole spacing results in lower strength of the honeycomb units, making tearing easier. Lower paper basis weight results in lower strength of the honeycomb units, making both tearing and crushing behaviors easier. The higher the paper weight, the greater the strength of the honeycomb units, making tearing and crushing more difficult. Therefore, to ensure tearing and crushing, the hole size should not be too small, the spacing between holes should not be too large, and the paper weight should not be too high. Otherwise, crushing will be difficult to achieve, and more importantly, due to the difficulty in tearing the honeycomb units, the honeycomb structure may be completely crushed before the paper tears (i.e., a layer-by-layer crushing effect cannot be achieved), resulting in deformation of honeycomb units outside the object. In other words, horizontal spread of crushing replaces tearing. However, at the same time, the hole size should not be too large, the spacing between holes should not be too small, and the paper weight should not be too low to ensure basic support function.

[0073] First, a comparison Figure 7 Test results for samples A and C. For samples A and C, all conditions were the same except for the minimum pore diameter and pore spacing. Specifically, the pore spacing in sample A was set to 7 mm, while the pore spacing in sample C was set to a larger 14 mm. The test results show that sample A can easily press the object into the honeycomb structure, while sample C has difficulty pressing the object into the honeycomb structure. Therefore, it can be seen that an excessively large pore spacing will lead to difficulty in producing tearing behavior.

[0074] Further comparison of the test results for samples A and B was conducted. Samples A and B were identical except for the shape of the pores and the maximum pore diameter. Specifically, the pores in sample A were circular with a maximum diameter of 4.5 mm, while the pores in sample B were elliptical with a maximum diameter of 5 mm. The tests revealed that both samples A and B exhibited good crushing and tearing behavior.

[0075] Then, samples D and E were further compared. For samples D and E, all conditions were the same except for the paper weight. Specifically, the paper weight in sample D was 110 g / m². 2 The paper weight in sample E is 170 g / m². 2 Tests revealed that, under suitable conditions, 110g / m³ 2 and 170g / m 2 Paper of different gram weights can also exhibit good crushing and tearing behavior.

[0076] The above only lists five representative samples for data comparison. After a series of theoretical derivations and experimental comparisons, the applicant found the following parameter settings: The paper basis weight range can be set at 110 g / m². 2 and 170g / m 2 Between. Furthermore, the paper's basis weight can be set within the range of 110 g / m². 2 and 140g / m 2 The cell side length of the honeycomb unit can be set between 5mm and 12mm, optionally between 6mm and 15mm, optionally between 7mm and 14mm, or optionally between 8mm and 12mm. When the cell side length is 5mm, the gradient diameter range of the holes (i.e., the maximum and minimum hole diameters that decrease gradually along the height direction) can be set between 1mm and 2.5mm. When the cell side length is 12mm, the gradient diameter range of the holes can be set between 2mm and 5mm. The spacing between the edges of adjacent holes can be set to 10%-200% of the maximum hole diameter.

[0077] The following experiments will further discuss the impact of hole uniformity, the relationship between maximum hole diameter and unit side length, and the number of walls with openings on the packaging of items.

[0078] Similar to the previous experiments, multiple packaging structural components were first prepared for quasi-static compression tests. In this embodiment, the packaging structural components adopted a honeycomb structure. The test used a GK-KY25 carton compression testing machine (available from Suzhou Susheng Testing Group Co., Ltd.), with a compression speed of 1 mm / min. The compression depth was determined by completely pressing the item into the honeycomb structure (at which point the corresponding stress increased sharply). The item was a regular cylinder with a height of approximately 60 mm and a diameter of approximately 60 mm. Table 2 below shows the basic information of each sample:

[0079] Table 2

[0080]

[0081]

[0082] The parameters shown in Table 2 have the same meaning as those shown in Table 1, and will not be repeated here. Furthermore, regarding the relationship between the maximum and minimum pore diameters, taking sample F as an example, the same maximum and minimum pore diameter indicates that all pores on the wall are of the same size, i.e., pores of equal size are provided. The number of perforated walls is the number of walls with pores in the six sides of the honeycomb unit.

[0083] First, samples F and G are compared. Sample F contains holes of uniform size, while sample G contains holes arranged in a gradient pattern; specifically, the hole size gradually decreases from the top down along the height of the wall. The comparison reveals that in sample F, the bottom honeycomb units also experience crushing when the sample is pressed in. In contrast, in sample G, the gradient holes prevented crushing of the bottom honeycomb units. Based on the previous analysis, the gradient holes more effectively create a layer-by-layer crushing effect along the height, preventing bottom crushing during the pressing of the sample into the honeycomb structure and thus avoiding impact on the overall effect.

[0084] Next, samples H and I are compared. For samples H and I, all conditions are the same except for the maximum and minimum pore sizes (or pore size gradient ranges). Specifically, the pore size gradient range in sample H is 4.5mm-2mm, and in sample I it is 3mm-0.5mm. The comparison reveals that while both samples H and I exhibit crushing and tearing behaviors, sample H shows some collapse of honeycomb units around the item, meaning the crushing behavior spreads slightly horizontally. This results in poorer wrapping of the item after being pressed in sample H. In contrast, sample I does not show horizontal crushing spread, making it more effective at wrapping the item after being pressed in.

[0085] Finally, samples J and K will be compared. For samples J and K, all conditions are the same except for the number of perforated walls. Specifically, all six walls in sample J have perforations, while only two walls in sample K have perforations. The comparison reveals that although both samples J and K exhibit crushing and tearing behaviors, sample J shows a collapse of honeycomb-like units around the item, and the tearing behavior of the walls without perforations is also poor. This indicates that the crushing behavior in sample J spreads horizontally, resulting in a poorer wrapping effect after the item is pressed into it. In contrast, sample K does not show horizontal crushing spread, and because all six walls have perforations, the tearing behavior is also good, resulting in a superior wrapping effect after the item is pressed into it.

[0086] The experimental comparison in Table 2 shows that the crushing behavior of gradient-distributed holes is superior to that of uniformly distributed holes. Gradient-distributed holes can produce good layer-by-layer crushing behavior, consistent with the aforementioned analysis. Furthermore, the applicant found through experiments that when the maximum pore diameter is less than 30% of the side length of the honeycomb unit, horizontal crushing spread is more likely to occur, making the honeycomb units around the article more susceptible to deformation and resulting in poor containment. When the maximum pore diameter is greater than 40% of the side length of the honeycomb unit, horizontal crushing spread can be effectively reduced. Moreover, the more openings in the walls, the easier it is for crushing and tearing behaviors to occur, and the easier it is to prevent horizontal crushing spread. Therefore, in this disclosure, the maximum pore diameter is set to be greater than 40% of the side length of the honeycomb unit. Further, it is preferable to provide holes on six walls.

[0087] Furthermore, in this embodiment, the honeycomb cells are constructed from a paper-based tearable material, making the overall structure 100% green and recyclable. Simultaneously, because the paper-based tearable material lacks elasticity, it allows for the formation of a permanent structure to protect items, providing better protection.

[0088] Second Embodiment

[0089] A description of a second embodiment of this disclosure will be given. The basic construction and operation of the packaging structure in the second embodiment are the same as those in the first embodiment. Therefore, in the packaging structure of the second embodiment, descriptions of components having the same function and construction as those in the packaging structure of the first embodiment will be omitted.

[0090] Figure 7 A second embodiment of the packaging structure 1 according to this disclosure is shown. For example... Figure 7 As shown, the main difference between the second embodiment and the first embodiment is that a bottom support 4 is provided at the bottom of the packaging structure 1. The bottom support 4 is flat and detachably attached to the bottom of the packaging structure 1, for example, by adhesive. In use, the packaging structure 1 is placed on the ground by the bottom support 4, thereby increasing the contact area with the ground and enabling better support. When the packaging structure needs to be transported, for example, by folding, the bottom support 4 can be separated from the packaging structure 1 and attached to the bottom of the packaging structure 1 during use.

[0091] In summary, one or more embodiments of this disclosure provide a honeycomb structure formed by densely packed multiple hollow honeycomb units. The upper and lower ends of each honeycomb unit are open and include six walls. These six walls are made of paper and have multiple holes arranged in a gradient manner, with the size gradually decreasing from the upper end downwards along the height direction. The honeycomb structure ensures that it can provide a certain degree of support and can undergo crushing behavior under pressure. The paper-forming of the walls ensures that the walls can tear under tensile force. The arrangement of the holes ensures that the walls are more prone to tearing at the holes. The gradient arrangement of the holes ensures layer-by-layer crushing and tearing behavior, reducing or avoiding the spread of crushing in the horizontal direction.

[0092] While specific embodiments of this disclosure have been described in detail by way of example, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. The various embodiments of the invention can be combined in any way without departing from the spirit and scope of this disclosure. Those skilled in the art should also understand that various modifications can be made to the embodiments without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A packaging structure, said packaging structure being formed by a plurality of hollow, closely spaced units, said closely spaced units having an open upper end and including a plurality of walls, wherein, At least one of the plurality of walls is provided with a weak portion arranged along the height direction. The wall is formed of a tearable material, wherein the weak portion is configured as a cut-off portion on the wall. The cut-off portions are arranged as a plurality of cut-off portions along the height direction, and the size of the plurality of cut-off portions gradually decreases downward from the upper end of the tiling unit along the height direction, forming a gradient.

2. The packaging structure according to claim 1, wherein, The plurality of cut sections are arranged at equal intervals along the height direction of the wall.

3. The packaging structure according to claim 1, wherein, The cut-off portion is positioned at the middle along the width direction of the wall.

4. The packaging structure according to any one of claims 1-3, wherein, The densely packed unit is a honeycomb-shaped unit in the form of a regular hexagon.

5. The packaging structure according to claim 4, wherein, The walls of the honeycomb cells are made of paper.

6. The packaging structure according to claim 4, wherein, The cut-off portion is constructed to form a hole.

7. The packaging structure according to claim 6, wherein, The side length of the honeycomb unit is set between 5mm and 12mm.

8. The packaging structure according to claim 6, wherein, The side length of the honeycomb unit is set between 6mm and 15mm.

9. The packaging structure according to claim 6, wherein, The side length of the honeycomb unit is set between 7mm and 14mm.

10. The packaging structure according to claim 6, wherein, The side length of the honeycomb unit is set between 8mm and 12mm.

11. The packaging structure according to claim 6, wherein, The side length of the honeycomb unit is set to be greater than 4mm.

12. The packaging structure according to claim 6, wherein, The side length of the honeycomb unit is set to 10mm.

13. The packaging structure according to claim 6, wherein, The gradient diameter of the hole is within the range of 1mm-5mm.

14. The packaging structure according to claim 13, wherein, When the side length of the cell in the honeycomb unit is 5mm, the gradient diameter of the hole is set to a range of 1mm-2.5mm.

15. The packaging structure according to claim 13, wherein, When the side length of the honeycomb unit is 12mm, the gradient diameter of the hole is set to a range of 2mm-5mm.

16. The packaging structure according to claim 6, wherein, The spacing between the edges of adjacent holes is set to 10%-200% of the maximum hole diameter.

17. The packaging structure according to claim 6, wherein, The maximum aperture is set to be greater than 40% of the side length of the honeycomb unit.

18. The packaging structure according to claim 6, wherein, The maximum aperture is set to be greater than 50% of the side length of the honeycomb cell.

19. The packaging structure according to claim 6, wherein, The minimum aperture is set to be less than 50% of the side length of the honeycomb unit.

20. The packaging structure according to claim 6, wherein, The paper weight range is set at 110 g / m². 2 and 170g / m 2 between.

21. The packaging structure according to claim 6, wherein, The paper weight range is set at 110 g / m². 2 and 140g / m 2 between.

22. The packaging structure according to claim 6, wherein, The hole is at least one of the following: round hole, elliptical hole, rectangular hole, and square hole.

23. The packaging structure according to claim 1, wherein, Each of the plurality of walls is provided with the weak point.

24. The packaging structure according to claim 1, wherein, The lower end of the packaging structure is open.

25. The packaging structure according to any one of claims 1-3, wherein, The excised portion is constructed as a slit.

26. The packaging structure according to claim 1, wherein, The weak portion is constructed as a tear line extending along the height direction.

27. The packaging structure according to any one of claims 1-3, wherein, The packaging structure includes a bottom support that is detachably attached to the bottom of the packaging structure.

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