Packaging structural part

Abstract

The present disclosure relates to a packaging structure formed by densely laying a plurality of hollow densely-laid units, the upper end of each densely-laid unit being open and including a plurality of walls, at least one of the plurality of walls being provided with a weakness arranged in the height direction, the walls being formed of a tearable material.

Description

Technical Field

[0001] The present disclosure relates to the field of packaging, and in particular to a packaging structure. Background Art

[0002] At present, with the rapid development of e-commerce and offline retail business, both consumers and brands have put forward more requirements for the protection and sustainable development of items. Generally speaking, the packaging of items requires good support and cushioning protection for the items, and provides consumers with a good opening experience. In offline retail scenarios, single or multiple products often need to be placed in a fixed position in the gift box. In e-commerce packaging scenarios, when one or more items need to be transported in a packaging box, in order to ensure that the items are not damaged during transportation, it is expected that the packaging of each item is independent of each other to avoid mutual influence between the items and the packaging box or between different items. Traditional packaging forms often use pre-formed paper inner cards or plastic inner cards. Considering the large demand for e-commerce and gift box businesses, lower manufacturing costs of packaging structural parts, more environmentally friendly materials, and more flexible structures that adapt to different sizes of items are also expected. Therefore, there is a need for continuous improvement in the packaging structural parts of items. Summary of the invention

[0003] According to one or more aspects of the present disclosure, the present disclosure provides a packaging structure, which is formed by closely paving a plurality of hollow closely paved units, wherein the upper end of the closely paved unit is open and includes a plurality of walls, wherein at least one of the plurality of walls is provided with a weak portion arranged along a height direction, and the wall is formed of a tearable material.

[0004] According to one or more aspects of the present disclosure, the weakened portion is configured as a cutout portion on the wall.

[0005] According to one or more aspects of the present disclosure, the cutout portion is provided in plurality along a height direction of the wall.

[0006] According to one or more aspects of the present disclosure, the sizes of the plurality of cutouts gradually decrease from the upper end of the densely laid unit downward in the height direction, and are arranged in a gradient.

[0007] According to one or more aspects of the present disclosure, the plurality of cutouts are arranged at equal intervals along a height direction of the wall.

[0008] According to one or more aspects of the present disclosure, the cutout portion is provided at a middle position in a width direction of the wall.

[0009] According to one or more aspects of the present disclosure, the densely-paved units are regular hexagonal honeycomb units.

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

[0011] According to one or more aspects of the present disclosure, the cutout portion is configured as a hole.

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

[0013] According to one or more aspects of the present disclosure, the gradient diameter range of the holes is within the range of 1 mm-5 mm.

[0014] According to one or more aspects of the present 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 the present 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 the present disclosure, the spacing between edges of adjacent holes is set to 10%-200% of the maximum hole diameter.

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

[0018] According to one or more aspects of the present disclosure, the minimum pore size is set to be smaller than 50% of the cell side length of the honeycomb cell.

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

[0020] According to one or more aspects of the present 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 the present disclosure, each of the plurality of walls is provided with the weak portion.

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

[0023] According to one or more aspects of the present disclosure, the cutout portion is configured as a slit.

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

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

[0026] Other features and advantages of the present disclosure will become more apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The foregoing and other features and advantages of the present disclosure will become apparent from the following description of the embodiments of the present disclosure in conjunction with the accompanying drawings. The accompanying drawings are incorporated herein and form a part of the specification, and are further used to explain the principles of the present disclosure and enable those skilled in the art to make and use the present disclosure. Among them:

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

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

[0030] Figure 3 It is the force analysis diagram of the densely packed unit;

[0031] Figure 4 is a top-down schematic diagram of a tessellated unit cell, where tearing behavior has occurred;

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

[0033] Figure 6 is a top-down schematic diagram of the tessellated unit;

[0034] Figure 7 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, sometimes the same reference numerals are used in common between different drawings to represent the same parts or parts with the same functions, and their repeated descriptions are omitted. In some cases, similar reference numerals and letters are used to represent similar items, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0036] For ease of understanding, the positions, sizes, and ranges of various structures shown in the drawings and the like sometimes do not represent actual positions, sizes, and ranges, etc. Therefore, the present disclosure is not limited to the positions, sizes, and ranges, etc. disclosed in the drawings and the like. Moreover, the drawings are not necessarily drawn to scale, and some features may be exaggerated to show details of specific components. DETAILED DESCRIPTION

[0037] The various exemplary embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be noted that the following description of the various exemplary embodiments is actually only illustrative and is by no means intended to limit the present disclosure and its application or use. Those skilled in the art will understand that these embodiments only illustrate exemplary ways in which the present disclosure can be implemented, rather than exhaustive ways. In addition, unless otherwise specifically stated, the relative arrangement of the components, numerical expressions, and numerical values ​​described in these embodiments do not limit the scope of the present disclosure. Techniques, methods, and devices known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods, and devices should be considered part of the authorization specification.

[0038] The present disclosure provides a packaging structure, which is formed by paving a plurality of hollow paved units, wherein the upper and lower ends of the paved units 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 a height direction, and the wall is formed of a tearable material.

[0039] Figure 1 1 is a perspective view of a packaging structure 1 according to a first embodiment of the present disclosure. Figure 1 As shown, the packaging structure 1 of this embodiment is formed by a plurality of hollow closely laid units 2 being closely laid.

[0040] The term "close-packed" refers to splicing one or more plane figures so as to cover a surface without leaving gaps and without overlapping. "Close-packed unit" refers to a basic solid unit composed of one or more plane figures, which are spliced ​​together to form a three-dimensional package. Close-packed units may include, for example, regular triangle close-packed units, regular quadrilateral close-packed units, regular hexagonal close-packed units, etc. In the packaging field, a single regular hexagonal close-packed unit is usually spliced ​​together to form a honeycomb structure, but it should be understood that, as mentioned above, the present disclosure is not limited to a single regular hexagonal close-packed unit, but may include, for example, regular triangle close-packed units, regular quadrilateral close-packed units or other close-packed units and combinations thereof.

[0041] like Figure 1As described, the upper end 20 of the paving unit 2 of this embodiment includes a plurality of walls 23. In this embodiment, the lower end 21 is also open, and it should be understood that the lower end can be set to be closed. In addition, the use of directional terms (such as upper and lower) in this article is corresponding, and the corresponding directional terms can be reversed depending on, for example, the use state. The intersection of the three walls forms an edge 25. Figure 1 In the illustrated embodiment, the densely packed unit 2 is configured as a single regular hexagonal densely packed unit or a honeycomb unit, and thus the densely packed unit 2 includes six walls. Through the multiple walls, the densely packed unit forms a hollow structure surrounded by multiple walls. This configuration can greatly save materials while ensuring the supporting function, and at the same time, it also has a relatively good buffering function when squeezed or impacted. In addition, the hollow structure also allows the densely packed unit to be folded under certain circumstances, which is convenient for storage and transportation. In other words, the hollow structure can make the packaging structure Figure 1 It is convenient to switch between the unfolded configuration shown and the folded configuration not shown.

[0042] In addition, at least one of the multiple walls 23 of the densely packed unit 2 is provided with a weak portion arranged in the height direction. The term "weak portion" refers to a portion whose strength (such as tensile strength or compressive strength) is weakened relative to the rest of the portion. When the material is subjected to tension or pressure, it will first break or tear at the weak portion due to the stress concentration at the weak portion. In this embodiment, by providing a weak portion on the wall, when an article is pressed downward from above, the densely packed unit directly below the article will be subjected to downward pressure, and the wall below the edge of the article will generate tension relative to the portion that is not pressed downward, and due to the existence of the weak portion, this tension will cause the wall to be torn apart. The following will analyze the forces on the densely packed unit and the weak portion when the packaging structure is under pressure.

[0043] Herein, the weak portion may also include a cutout, a tear line, or the weak portion may be made of a material having a different tear strength than the rest of the wall. The term "cutout" means that a portion of the material of the wall is removed to increase its strength. The cutout may include a hole, a slit, etc.

[0044] In this embodiment, the weak portion is set as a hole 24. It should be understood that the hole disclosed herein does not necessarily mean that it is a circular hole unless it is clearly stated as a circular hole. In the present disclosure, the hole may include a circular hole, an elliptical hole, a square hole, etc. For the packaging structure, it can be relatively easy to perform a perforation process on it, so the manufacturing cost is relatively low.

[0045] Figure 2 FIG. 2 shows a front view of the packaging structure 1 of the first embodiment of the present disclosure, from which the distribution of the holes 24 can be more clearly seen. Figure 2As shown, in this embodiment, the holes 24 are arranged in plurality and are arranged on the walls of the densely laid units in the height direction of the densely laid units. In this embodiment, the holes 24 are arranged on all six walls of the densely laid units, and it should be understood that the holes can be arranged on one or more walls of the densely laid units as needed.

[0046] Refer to the following Figure 3 The force analysis diagram of the densely laid units shown is used to more clearly explain the working principle of the packaging structure of the present application. Figure 3 In the paper, a single regular hexagonal paving unit, also known as a honeycomb paving unit, is taken as an example for analysis.

[0047] One of the characteristics of the structure formed by closely packed units is that it will be crushed when subjected to axial load. Figure 3 As shown, when pressure is applied to the top of the densely packed units, the densely packed units will tend to fold or collapse downward. Figure 3 The force represented by the arrow F in FIG. 1 is the downward pressure acting on the edge of the densely packed unit (where the three walls meet).

[0048] First, we will describe Figure 3 The deformation behavior when force F is uniformly applied to all densely laid units in the wall. At this time, the force F above all the densely laid units is uniform, and when the pressure F is first applied, the upper part of the wall will be crushed and folded first, and then the crushed and folded upper part will transfer the force to the middle and lower parts of the wall. The crushed and folded part of the wall increases the force-bearing area due to the crushing and folding, and the crushed and folded part also plays a supporting role, so that if the force needs to be further transmitted downward, a greater force needs to be applied. In this way, all densely laid units on the same layer are crushed and folded synchronously. In fact, as the crushing proceeds, the rate of increase of the required force is almost doubled. Since each layer of the packaging structure composed of honeycomb densely laid units has the same structure and is approximately isotropic, the structure has good stability. Generally speaking, a large force is required to be crushed. When the weight of common items is placed on the honeycomb densely laid units, it is not easy to deform the densely laid structure. Therefore, the above structure has excellent compression resistance and bending resistance.

[0049] The deformation behavior when a pressure F is applied to one or more closely packed units will be described below. Since there is no downward pressure F on the adjacent closely packed units, when the wall of the closely packed unit to which the pressure F is applied has a downward crushing tendency, the space between adjacent edges (e.g. Figure 3 There is a relative movement tendency between the edges 250 and 251 shown in the figure, so that the edge 251 without pressure will generate a pulling force on the edge 250 under pressure, that is, the wall 230 located below the edge of the article is subjected to the force of the pressure. Figure 3The tension F1 in the direction away from the stressed edge is shown. The existence of this tension F1 makes it more difficult for the densely packed units to be crushed. Therefore, the packaging structure composed of honeycomb densely packed units can be used to support articles of various shapes, regardless of whether their area is larger or smaller than the footprint of the packaging structure.

[0050] In this embodiment, the wall of the densely-laid unit is made of a tearable material. As for the tearable material, for example, paper or aramid paper can be used. The tearable material may tear when subjected to shear force. Therefore, when pressure is applied to one or more densely-laid units as described above, there is a possibility that the wall 230 between the unpressed edge 251 and the pressed edge 251 is torn by the shear force. However, since the wall of the densely-laid unit usually has a certain supporting function, the densely-laid unit is usually crushed before tearing.

[0051] Reference Figure 3 Since the compressed densely packed units have a tendency to move downward, the tension F1 gradually tends to move from horizontal to obliquely downward, and therefore there will be a vertical component during the crushing process, and this vertical component will cause the surrounding uncompressed densely packed units to be gradually crushed, thereby causing the crushing behavior to gradually spread in the horizontal direction. And in many cases, this horizontal crushing and spreading behavior occurs before the wall is torn, that is, the crushing and spreading behavior has occurred before the pressure that causes the wall to tear has reached the magnitude. That is, no obvious tearing zone can be formed between the compressed densely packed units and the uncompressed densely packed units (compressed and uncompressed in this article refer to whether the direct pressure is generated by, for example, the articles directly above the densely packed units) (in the best case, a completely vertical tearing gap is formed), so that the articles cannot be smoothly pressed into the packaging structure or even if the articles are pressed into the packaging structure, they cannot be well wrapped. This will be referred to later. Figure 6 A more detailed description of the package behavior.

[0052] The applicant found that by setting a weak part on the wall of the close-laid unit, when a pressure F is applied to the close-laid unit, the wall below the edge of the article is easy to tear, so that the close-laid unit below the edge of the article is easy to separate from the surrounding close-laid units and be crushed and folded. And from the above analysis of the crushing behavior of the close-laid unit, it can be seen that when the close-laid unit is crushed, a stronger support will gradually be formed below, and at this time, due to the tearing at the weak part, the crushing and spreading behavior in the horizontal direction is prevented, and the close-laid units around will form a surrounding structure, which can also play a good protective role.

[0053] The following will refer to Figure 4 Describing a tessellation unit according to an embodiment of the present disclosure, Figure 4 It is a schematic top plan view of a dense paving unit according to the first embodiment of the present disclosure.

[0054] Figure 4 The bold part in the figure represents the densely packed units under pressure, and Figure 4 The compressed tessellated cells shown in the figure have been torn apart from the surrounding tessellated cells. Figure 4 As shown in FIG. 1 , due to the existence of the weak part, the weak part will form a stress concentration point, which is easy to tear when subjected to force, so that the stressed dense paving unit and the adjacent dense paving unit are torn apart, and finally Figure 4 The tessellated cells below the stressed area are shown to be completely torn apart from the adjacent tessellated cells.

[0055] Figure 5 FIG. 1 shows a schematic diagram of the use of a packaging structure according to a first embodiment of the present disclosure, wherein in order to better illustrate the crushing and tearing effects, Figure 5 The lower part of is partially transparent for clearer display. Figure 5 As shown, when an article is placed on the packaging structure of this embodiment and pressure is applied, the article will press down the densely packed unit below it, and the densely packed unit below the article will be crushed due to the pressure. And due to the existence of the weak part, the wall of the densely packed unit below the edge of the article will be torn from its weak part. As the article is further pressed down or the depth of the crushing increases, the wall of the densely packed unit directly below will be crushed and folded, and the wall that has been crushed and folded will gradually increase the force required for further crushing due to the increase in area after folding and the stacking effect, and therefore can play a good supporting role. At the same time, since the tearing of the weak part avoids the spread of the crushing in the horizontal direction, the densely packed unit separated from the crushed densely packed unit will still maintain its original shape due to the structural stability of the densely packed unit itself, thereby forming a accommodating space that is basically close to the shape of the article to wrap the article. In this way, a good packaging of the article can be formed.

[0056] It can be seen from the above description that in this embodiment, the densely packed structure is crushed in the vertical direction when subjected to pressure to form a concave portion for accommodating the product. At the same time, the arrangement of the weak portion on the wall of the densely packed structure prevents the crushing and spreading of the densely packed structure in the horizontal direction, so that there will be a clear tearing zone between the densely packed units under pressure and the densely packed units not under pressure, thereby forming a good wrapping of the article.

[0057] Usually, honeycomb dense-paved structures or honeycomb paperboards are used to support objects. The applicant has discovered for the first time through theoretical analysis and experimental verification (the experiments will be described in detail below) that honeycomb dense-paved structures and honeycomb paperboards can be used to wrap or package items. And as mentioned above, since the dense-paved structure is crushed in the vertical direction, the items can be pressed into the honeycomb dense-paved structure and the bottom still has good support after being pressed in. The setting of the weak part avoids the crushing and spreading of the dense-paved structure in the horizontal direction, so that a very good wrapping effect can be formed for the items. In addition, the honeycomb dense-paved structure of the embodiment of the present disclosure is simple in structure, easy to manufacture and very easy to use. It is only necessary to press the items into the honeycomb dense-paved structure, and there is no restriction on the shape of the items. After pressing different items, the dense-paved units that are not under pressure separate the items, so that the items can be independently protected.

[0058] Return again Figure 1 and Figure 2 It can be seen that in this embodiment, the holes 24 are arranged in a plurality and are arranged in a gradient in 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. A hole with a larger size means a lower strength here, that is, it is more likely to tear. Therefore, the holes with a decreasing size gradient in the height direction mean that the crushing force and tearing force of each layer of densely laid units are also increased in a gradient. Therefore, under the action of the same pressure, the densely laid units above will be more likely to be crushed first, while the densely laid units below will require a larger force to be crushed later. Therefore, when the article is pressed down, the upper part of the densely laid unit that first contacts the article is crushed first, and it is also easier to tear and separate from the surrounding densely laid units. As the crushing proceeds, the already crushed densely laid units will also fold up, combined with the smaller holes below, so that a larger force is required to crush the densely laid units below. Therefore, the holes arranged in a gradient can more effectively produce a layer-by-layer crushing or progressive crushing effect in the height direction, avoiding the deformation of other parts at the same time or first in the process of pressing the article into the packaging structure to affect the overall effect.

[0059] In this embodiment, the holes arranged in a gradient are arranged from the upper end in the height direction of the wall, but do not extend the entire height of the wall, that is, do not completely extend to the lower end of the wall. It should be understood that this does not constitute a limitation, and the size, spacing, and extension distance of the holes can be set as needed. In this embodiment, the holes are arranged at approximately the middle position along the width direction of the wall. It should be understood that the holes can also be arranged at a position closer to any edge along the width direction of the wall.

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

[0061] First, prepare multiple packaging structural parts for quasi-static compression test. In this embodiment, the packaging structural parts adopt a honeycomb structure. Regarding the quasi-static compression test, this test uses a carton compression tester GK-KY25 (available from Suzhou Sushi Testing Group Co., Ltd.), with a compression speed of 1mm / min, and the compression depth is based on the end judgment of completely pressing the article into the honeycomb structure (at this time, the corresponding stress rises sharply). Regarding the article, it is a regular cylinder with a height of about 60mm and a diameter of about 60mm. The basic information of each sample is shown in Table 1 below:

[0062] Table 1

[0063]

[0064] First, the parameter information is explained as follows.

[0065] Regarding the sample size, it indicates the length, width and height dimensions of the packaging structure. Regarding the unit arrangement, it indicates the number of units arranged longitudinally and the number of units arranged transversely. Regarding the unit side length, it indicates the side length of the hexagon of the honeycomb structure. Regarding the maximum pore size and the minimum pore size, it indicates the maximum longitudinal dimension and the minimum longitudinal dimension of the hole. For example, in the case where the hole is a circular hole, the maximum pore size indicates the maximum diameter of the hole, and the minimum pore size indicates the minimum diameter of the hole. In the case where the hole is an elliptical hole, the maximum pore size indicates the maximum diameter on the long axis of the hole, and the minimum pore size indicates the minimum diameter on the long axis of the hole. Regarding the hole spacing, it indicates the spacing between the adjacent edges of adjacent holes in the vertical direction. Regarding the grammage of paper, it indicates the grammage of the paper constituting the honeycomb structure. In addition, it should be noted that the comparison between the above samples should be understood as a comparison between different embodiments of the present application, not a comparison with the prior art, and the experimental comparison 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 the honeycomb structure mainly affects the tightness of the object being wrapped. The smaller the unit side length, the better the object is wrapped. Figure 6 A top view of the honeycomb structure is shown, and the shaded portion in the figure is the honeycomb unit located below the test article.

[0067] It can be seen that, in an ideal situation, let the top view area of ​​the test article be S, the number of honeycomb cells completely located directly below it is m, and the number of honeycomb cells covered by its edges is n. When the article is pressed into the honeycomb structure, as mentioned above, the walls of the honeycomb cells located below the edges of the article 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)xS 蜂窝状单元, we can define α = S / S1 to indicate how tightly the item is wrapped. In addition, the side length of the honeycomb unit is defined as l. According to simple geometric relationships, we can get:

[0068]

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

[0070] Therefore, after theoretical deduction and testing, it is appropriate to set the unit side length within the range of 5mm-12mm. Preferably, the unit side length can be set to 10mm. The above samples all use a length of 10mm (there is no range) as the unit side length.

[0071] In addition, it should be understood that the present disclosure is not limited to a side length of 10 mm, and other suitable unit side lengths may be adopted according to actual conditions as long as they do not violate the above theory in the present disclosure.

[0072] 2. The following will further discuss the effects of the size, spacing and grammage of the holes on the crushing behavior and the tearing behavior. The size, spacing and grammage of the holes will all affect the ease of crushing the honeycomb structure, and therefore, the three together determine the ease of crushing the honeycomb structure. As mentioned above, the packaging of articles in the present disclosure is achieved by the layer-by-layer crushing or progressive crushing of the honeycomb cells under the articles and the tearing of the wall under the edge of the article (or between the honeycomb cells under the edge of the article and the adjacent honeycomb cells). The larger the size of the holes, the lower the strength of the honeycomb cells, and the easier it is to produce tearing behavior. The smaller the size of the holes, the higher the strength of the honeycomb cells, and the more difficult it is to produce tearing behavior. The larger the spacing between the holes, the higher the strength of the honeycomb cells, and the more difficult it is to produce tearing behavior. The smaller the spacing between the holes, the lower the strength of the honeycomb cells, and the more likely it is to produce tearing behavior. The smaller the spacing between the holes, the lower the strength of the honeycomb cells, and the more likely it is to produce tearing behavior. The smaller the grammage of the paper, the lower the strength of the honeycomb cells, and the easier it is to produce tearing behavior and crushing behavior. The greater the weight of the paper, the greater the strength of the honeycomb unit, and the more difficult it is to produce tearing and crushing behaviors. Therefore, in order to ensure the occurrence of tearing and crushing behaviors, the size of the holes should not be too small, the spacing between the holes should not be too large, and the weight of the paper should not be too high. Otherwise, it is difficult to produce crushing. More importantly, it is too difficult to tear the honeycomb unit during crushing. The honeycomb structure may have been crushed as a whole before the paper is torn (that is, it is impossible to produce a layer-by-layer crushing effect), and the honeycomb units other than the objects are also deformed, that is, the horizontal spread of the crushing behavior replaces the tearing behavior. But at the same time, the size of the holes should not be too large, the spacing between the holes should not be too small, and the weight of the paper should not be too small, in order to ensure the most basic support function.

[0073] First compare Figure 7 The test results of sample A and sample C in Figure 2. For sample A and sample C, except for the minimum hole diameter and hole spacing, other conditions are the same. Specifically, the hole spacing in sample A is set to 7mm, while the hole spacing in sample C is set to a larger 14mm. The test results show that sample A can press the object into the honeycomb structure relatively smoothly, while sample C has difficulty pressing the object into the honeycomb structure. Therefore, it can be seen that too large a hole spacing will make it difficult to produce tearing behavior.

[0074] The test results of sample A and sample B are further compared. For sample A and sample B, except for the shape of the hole and the maximum pore size, other conditions are the same. Specifically, the shape of the hole in sample A is circular, and the maximum pore size is 4.5 mm, and the shape of the hole in sample B is elliptical, and the maximum pore size is 5 mm. After testing, it is found that both sample A and sample B can produce relatively good crushing behavior and tearing behavior.

[0075] Then, sample D and sample E were further compared. For sample D and sample E, except for the different paper weights, other conditions were the same. Specifically, the paper weight in sample D was 110 g / m 2 , while the paper weight in sample E is 170g / m 2 After testing, it was found that under other appropriate conditions, 110g / m 2 and 170g / m 2 Papers of varying grammage also exhibit good crushing and tearing behavior.

[0076] As shown above, only 5 representative samples are listed for data comparison. After a series of theoretical deductions and experimental comparisons, the applicant found the following parameter settings. The paper weight range can be set at 110g / m 2 and 170g / m 2 Furthermore, the paper weight range can be set between 110g / m 2 and 140g / m 2 The cell side length of the honeycomb cell can be set between 5mm-12mm, optionally between 6mm-15mm, optionally between 7mm-14mm, and optionally between 8mm-12mm. When the cell side length of the honeycomb cell is 5mm, the gradient diameter range of the hole (that is, the maximum pore size and the minimum pore size that decrease gradually along the height direction) can be set to 1mm-2.5mm. When the cell side length of the honeycomb cell is 12mm, the gradient diameter range of the hole can be set to 2mm-5mm. The spacing between the edges of adjacent holes can be set to 10%-200% of the maximum pore size.

[0077] Next, the effects of the uniformity of the holes, the relationship between the maximum hole diameter and the unit side length, and the number of perforated walls on the packaging of articles will be further discussed through experiments.

[0078] Similar to the above test, a plurality of packaging structural parts are first prepared for quasi-static compression test. In this embodiment, the packaging structural part adopts a honeycomb structure. This test uses a carton compression tester GK-KY25 (commercially available from Suzhou Sushi Testing Group Co., Ltd.), with a compression speed of 1 mm / min, and the compression depth is based on the end judgment of completely pressing the article into the honeycomb structure (at this time, the corresponding stress rises sharply). Regarding the article, it is a regular cylinder with a height of about 60 mm and a diameter of about 60 mm. The basic information of each sample is shown in Table 2 below:

[0079] Table 2

[0080]

[0081]

[0082] The same parameters shown in Table 2 have the same meanings as those shown in Table 1, and are not described here in detail. In addition, regarding the relationship between the maximum pore size and the minimum pore size, taking sample F as an example, the same maximum pore size and the same minimum pore size indicate that the sizes of the holes set on the wall are the same, that is, holes of equal size are set. The number of open-cell walls is the number of walls with holes set in the six walls of the honeycomb unit.

[0083] First, compare sample F and sample G. For sample F and sample G, the holes in sample F are equal in size, while the holes in sample G are set in a gradient manner. Specifically, the size of the holes gradually decreases from the upper end to the lower end along the height direction of the wall. By comparison, it is found that in sample F, when the sample is pressed in, the honeycomb unit at the bottom also produces a crushing phenomenon. In contrast, by setting gradient holes in sample G, the honeycomb unit at the bottom does not produce a crushing phenomenon. Combined with the above analysis, it can be seen that the gradient-set holes make it possible to more effectively produce a layer-by-layer crushing effect in the height direction, avoiding the crushing phenomenon at the bottom when the object is pressed into the honeycomb structure, thereby affecting the overall effect.

[0084] Next, compare sample H and sample I. For sample H and sample I, except for the maximum pore size and the minimum pore size (or pore size gradient range), other conditions are the same. Specifically, the pore size gradient range in sample H is 4.5mm-2mm, and the pore size gradient range in sample I is 3mm-0.5mm. Through comparison, it is found that although both sample H and sample I can produce crushing behavior and tearing behavior, a certain collapse phenomenon of honeycomb units is also produced around the article in sample H, that is, the crushing behavior has a small range of spread in the horizontal direction, which makes the wrapping effect of the sample H after the article is pressed in is poor. However, there is no crushing spread in the horizontal direction in sample I, which makes the wrapping effect of the sample I after the article is pressed in better.

[0085] Finally, sample J and sample K will be compared. For sample J and sample K, except for the different number of perforated walls, other conditions are the same. Specifically, six walls in sample J are provided with holes, and only two walls in sample K are provided with holes. Through comparison, it is found that although sample J and sample K can produce crushing behavior and tearing behavior, the collapse of the honeycomb unit around the article in sample J occurs, and the tearing behavior of the wall without holes is also poor. This shows that the crushing behavior of sample J has spread in the horizontal direction, which makes the wrapping effect of the sample J after the article is pressed into the sample J poor. However, there is no crushing spread in the horizontal direction in sample K, and because holes are provided on the six walls, the tearing behavior is also good, which makes the wrapping effect of the sample K after the article is pressed into the sample K better.

[0086] It can be seen from the experimental comparison in Table 2 that the crushing behavior of the holes with a gradient setting is better than the crushing behavior of the holes with a uniform distribution, and the holes with a gradient setting can produce good layer-by-layer crushing behavior, which is consistent with the above analysis. In addition, the applicant found through experiments that when the maximum pore size is less than 30% of the cell side length of the honeycomb unit, crushing and spreading in the horizontal direction are prone to occur, making the honeycomb unit around the article easy to change, resulting in poor wrapping. When the maximum pore size is greater than 40% of the cell side length of the honeycomb unit, the crushing and spreading in the horizontal direction can be well weakened. In addition, the more the number of open hole walls, the easier it is for crushing and tearing behaviors to occur, and it is easier to prevent crushing and spreading in the horizontal direction. Therefore, in the present disclosure, the maximum pore size is set to be greater than 40% of the cell size of the honeycomb unit. Further, holes are preferably set on six walls.

[0087] In addition, in this embodiment, by constructing the honeycomb unit from the paper-based tearable material, the overall structure is 100% green and recyclable. At the same time, since the paper-based tearable material is not elastic, a permanent structure for protecting the article can be formed, which can better provide corresponding protection for the article.

[0088] Second embodiment

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

[0090] Figure 7 FIG. 2 shows a second embodiment of a packaging structure 1 according to the present disclosure. Figure 7 As shown, the main difference between the second embodiment and the first embodiment is that a bottom support member 4 is provided at the bottom of the packaging structure 1. The bottom support member 4 is in the shape of a flat plate and is detachably attached to the bottom of the packaging structure 1, for example, by bonding. When in use, the packaging structure 1 is placed on the ground through the bottom support member 4, thereby increasing the contact area with the ground, so that it can better play a supporting role. When the packaging structure needs to be folded for transportation, for example, the bottom support member 4 can be separated from the packaging structure 1 and attached to the bottom of the packaging structure 1 when in use.

[0091] In summary, according to one or more embodiments of the present disclosure, a honeycomb structure is provided, wherein the honeycomb structure is formed by closely paving a plurality of hollow honeycomb units, the upper and lower ends of the honeycomb units are open and include six walls, wherein the six walls are formed of paper and are provided with a plurality of holes arranged in a gradient with the size gradually decreasing from the upper end along the height direction downward. The honeycomb structure ensures that it can play a certain supporting role and can produce crushing behavior when under pressure. The walls are formed of paper, which ensures that the walls can produce tearing behavior when subjected to tension. The setting of the holes ensures that the walls are more likely to tear at the holes. The gradient-arranged holes ensure the occurrence of layer-by-layer crushing and tearing behavior, reducing or avoiding the spread of crushing in the horizontal direction.

[0092] Although some specific embodiments of the present disclosure have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. The various embodiments of the present invention may be combined arbitrarily without departing from the spirit and scope of the present disclosure. It will also be appreciated by those skilled in the art that various modifications may be made to the embodiments without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A packaging structure, the packaging structure is formed by paving a plurality of hollow paving units, the upper end of the paving unit is open and includes a plurality of walls, wherein: At least one of the plurality of walls is provided with a weakened portion arranged in a height direction, and the wall is formed of a tearable material.

2. The packaging structure according to claim 1, wherein: The weakened portion is configured as a cutout in the wall.

3. The packaging structure according to claim 2, wherein: The cutout portion is provided in plurality along a height direction of the wall.

4. The packaging structure according to claim 3, wherein: The sizes of the multiple cutouts gradually decrease from the upper end of the densely laid unit downward in the height direction, and are arranged in a gradient.

5. The packaging structure according to claim 3, wherein: The plurality of cutouts are arranged at equal intervals along a height direction of the wall.

6. The packaging structure according to claim 3, wherein: The cutout portion is provided at a middle position in a width direction of the wall.

7. The packaging structure according to any one of claims 2 to 6, wherein: The closely-paved units are regular hexagonal honeycomb units.

8. The packaging structure according to claim 7, wherein: The walls of the honeycomb cells are formed from paper.

9. The packaging structure according to claim 7, wherein: The cutout is designed as a hole.

10. The packaging structure according to claim 9, wherein: The unit side length of the honeycomb unit is set between 5mm-12mm, optionally between 6mm-15mm, optionally between 7mm-14mm, optionally between 8mm-12mm, optionally greater than 4mm, and optionally 10mm.

11. The packaging structure according to claim 9, wherein: The gradient diameter range of the holes is within the range of 1 mm to 5 mm.

12. The packaging structure according to claim 11, wherein: 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.

13. The packaging structure according to claim 11, wherein: 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.

14. The packaging structure according to claim 9, wherein: The spacing between the edges of adjacent holes is set to 10%-200% of the maximum hole diameter.

15. The packaging structure according to claim 9, wherein: The maximum pore size is set to be larger than 40% of the cell side length of the honeycomb unit, and optionally larger than 50% of the cell side length of the honeycomb unit.

16. The packaging structure according to claim 9, wherein: The minimum pore size is set to be smaller than 50% of the cell side length of the honeycomb unit.

17. The packaging structure according to claim 9, wherein: The paper weight range is set at 110g / m 2 and 170g / m 2 Between, optional 110g / m 2 and 140g / m 2 between.

18. The packaging structure according to claim 9, wherein: The hole is at least one of a circular hole, an elliptical hole, a rectangular hole, and a square hole.

19. The packaging structure according to claim 1, wherein: Each of the plurality of walls is provided with the weakened portion.

20. The packaging structure of claim 1, wherein: The lower end of the packaging structure is open.

21. The packaging structure according to any one of claims 2 to 6, wherein: The cutout is configured as a slit.

22. The packaging structure of claim 1, wherein: The weakened portion is configured as a tear line extending along the height direction.

23. The packaging structure according to any one of claims 1 to 6, wherein: The packaging structure includes a bottom support removably attached to a bottom portion.

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