Composite gas column wrapper and packaging structure

Abstract

The utility model relates to a kind of composite air column packing material and packing structure, composite air column packing material includes: inflation body, including first film layer, second film layer, and the gas chamber formed between the first film layer and the second film layer;Dupont paper layer, at least covering the side end surface of the first film layer away from the second film layer;The rigidity of the Dupont paper layer is greater than the rigidity of the first film layer, has excellent puncture resistance and tear resistance, reduces the risk of being punctured during the transportation of first film layer.

Description

Technical Field

[0001] This utility model relates to the technical field of goods packaging and transportation, and in particular to a composite air column packaging material and packaging structure. Background Technology

[0002] Air column type express packaging boxes on the market mainly consist of inflatable gas and an inflation port on the inflatable gas. The inflatable gas forms a cavity, and the inflation port is used to inflate the cavity to form an air column, thereby increasing the cushioning performance of the air column type express packaging box.

[0003] To facilitate inflation into the chamber, existing inflation gases typically consist of a membrane structure made of PE (polyethylene) or PA (polyamide), which has low rigidity to allow for deformation and contain the inflated gas. However, during the encapsulation and transport process, its outer surface is susceptible to external forces, leading to plastic deformation or even puncture, thus affecting the transport of the goods. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects in the prior art, thereby providing a composite air column packaging material and packaging structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A composite air column packaging material, comprising: The gas filling includes a first membrane layer, a second membrane layer, and a gas chamber formed between the first membrane layer and the second membrane layer; DuPont paper layer, at least covering the end face of the first film layer away from the second film layer; The rigidity of the DuPont paper layer is greater than that of the first film layer.

[0006] Preferably, both the gas filling and the DuPont paper layer are made of biodegradable PE material.

[0007] Preferably, the first film layer and the second film layer are partially connected to form a plurality of partitions; The aforementioned partitions divide the gas chamber into several gas column chambers; The DuPont paper layer is bonded to the separator, and a predetermined gap is formed between it and the area of ​​the first film layer corresponding to the gas chamber.

[0008] Preferably, all of the aforementioned air column chambers extend along a predetermined direction; The inflation gas also includes an inflation assembly, which includes an inflation channel and several flow guiding structures; The inflation channel is connected to several of the aforementioned flow guiding structures; Each of the air column chambers corresponds to at least one of the flow guiding structures, and the inflation direction of the flow guiding structure is consistent with the extension direction of the air column chamber.

[0009] Preferably, the flow guiding structure is unidirectionally directed from the inflation channel to the air column chamber.

[0010] Preferably, the gas filling further includes several bends; The bending section divides the air column chamber into several sub-regions; The bent portion includes several connecting channels and several first adhesive points; The connecting channel connects sub-areas of the same air column chamber; At the first adhesive point, the DuPont paper layer, the first film layer, and the second film layer are bonded to each other.

[0011] Preferably, the width of the first adhesive point is W1, and the radial width of the air column chamber is W2, then W1 / W2 satisfies: 0.5≤W1 / W2≤0.8.

[0012] A packaging structure includes a middle section and ends located at both ends of the middle section; The middle part and the end part can be bent into a box, and the middle part and the end part respectively form the side wall and end wall of the box; At least the intermediate portion is configured as a composite air column packaging material as described above.

[0013] Preferably, the end portion is also configured as the composite air column packaging material; The composite air column packaging material includes a first membrane layer, a second membrane layer, and several air column chambers, each of the several air column chambers including several sub-regions; The packaging structure further includes a second adhesive point, which is distributed on a portion of the end area, where the first film layer and the second film layer are bonded to each other.

[0014] Preferably, the middle portion is bent to form the sidewall of the box body. In the middle section, several sub-regions of each air column chamber are located on different side walls; Two adjacent sub-regions of the same air column chamber, one end of which is located in the other extending direction, to form an overlap.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a composite air column packaging material. By covering the end face of the first gas-filled film layer away from the second film layer (specifically, the end face of the composite air column packaging material facing the external environment when in use) with a relatively stiff DuPont paper layer, on the one hand, the rigidity and wear resistance of the DuPont paper layer itself can be utilized to reduce the risk of the first film layer thinning due to wear or the formation of micropores and air leakage. On the other hand, this arrangement can utilize the fibrous mesh structure of the DuPont paper layer to give the composite air column packaging material excellent puncture resistance and tear resistance, reducing the risk of the first film layer being punctured during transportation.

[0016] Furthermore, due to the relatively high stiffness of the DuPont paper layer, when it covers one end face of the first film layer, it can provide uniform support for the entire first film layer (i.e., a "skeleton" structure), which can, to a certain extent, prevent the first film layer from undergoing plastic deformation or rupture due to excessive local pressure in a single air column. Simultaneously, the DuPont paper layer itself can also serve as a supporting structure for the entire composite air column packaging material, thus ensuring that the air pressure inside the gas chamber is relatively low (i.e., less air is added, reducing the possibility of excessive deformation of the first film layer). The packaging structure (such as a box) made from this composite air column packaging material can have a certain degree of structural stability (i.e., ensuring the stability of the packaging shape), facilitating stacking and handling, and preventing compression of the packaged items. Correspondingly, the packaging structure based on the above-mentioned composite air column packaging material provided by this utility model has good puncture and tear resistance and structural stability. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0019] Figure 2 This is a schematic diagram showing the positions of the first film layer, the second film layer, and the DuPont paper layer.

[0020] Figure 3 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0021] Figure 4 for Figure 3 Enlarged view of position D1 (DuPont paper layer not shown).

[0022] Figure 5 This is a structural schematic diagram of Embodiment 3 of the present invention (DuPont paper layer not shown).

[0023] Figure 6 for Figure 5 Enlarged view of position D2 (DuPont paper layer not shown).

[0024] Figure 7 This is a schematic diagram of the structure after the middle part is bent.

[0025] Figure 8 This is a schematic diagram of the existing structure after the middle section is bent.

[0026] Figure 9 This is Embodiment 4 of the present invention (DuPont paper layer not shown).

[0027] Explanation of reference numerals in the attached figures: 100, Middle section; 200, End; 300, Second adhesive point; 400, Receiving cavity; 1, Gas filling; 11, First film layer; 12, Second film layer; 13, Gas chamber; 131, Air column chamber; 1311, Sub-region; 14, Bending section; 141, Connecting channel; 142, First adhesive point; 15, Inflating assembly; 151, Inflating channel; 152, Flow guiding structure; 2, DuPont paper layer; 3, Separator. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Example 1 See Figure 1 and Figure 2 This utility model provides a composite gas column packaging material, including a gas filling 1 and a DuPont paper layer 2. The gas filling 1 includes a first film layer 11, a second film layer 12, and a gas chamber 13 formed between the first film layer 11 and the second film layer 12. The DuPont paper layer 2 covers at least one end face of the first film layer 11 away from the second film layer 12, and the rigidity of the DuPont paper layer 2 is greater than the rigidity of the first film layer 11.

[0032] It is easy to understand that covering the relatively stiff DuPont paper layer 2 on the side of the first membrane layer 11 away from the second membrane layer 12 (specifically, the side facing the external environment when the composite air column packaging is used) can, on the one hand, reduce the risk of the first membrane layer 11 becoming thinner due to wear or developing micropores and leaking air by utilizing the stiffness and wear resistance of the DuPont paper layer 2 itself; on the other hand, this arrangement can utilize the fibrous mesh structure of the DuPont paper layer 2 to give the composite air column packaging excellent puncture resistance and tear resistance, reducing the risk of the first membrane layer 11 being punctured during transportation.

[0033] Furthermore, due to the relatively high stiffness of the DuPont paper layer 2, when it covers one end face of the first film layer 11, it can provide uniform support for the entire first film layer 11 (i.e., a "skeleton" structure), which can, to a certain extent, prevent the first film layer 11 from undergoing plastic deformation or rupture due to excessive local pressure in a single air column. At the same time, the DuPont paper layer 2 itself can also serve as a supporting structure for the entire composite air column packaging material, thereby ensuring that the air pressure in the gas chamber 13 is relatively low (i.e., less air is added, reducing the possibility of excessive deformation of the first film layer 11). The packaging structure (such as a packaging box) made of this composite air column packaging material can have a certain degree of structural stability (i.e., ensure the stability of the packaging shape), so as to facilitate stacking and handling and avoid squeezing the packaged items.

[0034] Of course, in other embodiments, the DuPont paper layer 2 may also be provided at the end of the second film layer 12 away from the first film layer 11. This application will describe an example where the DuPont paper layer 2 is provided only in the first film layer 11.

[0035] Furthermore, in order to meet domestic and international environmental degradation requirements, both the gas filling layer 1 and the DuPont paper layer 2 are made of biodegradable PE materials, and the DuPont paper layer 2 is 100% PE, and the gas filling layer 1 is 100% PE, which makes the overall PE purity of the packaging higher.

[0036] See Figure 1 and Figure 2 The first film layer 11 and the second film layer 12 are partially connected to form a plurality of partitions 3, which divide the gas chamber 13 into a plurality of gas column chambers 131. The DuPont paper layer 2 is bonded to the partitions 3 and forms a predetermined gap between it and the area of ​​the first film layer 11 corresponding to the gas chamber 13. This gap can be set to 0.5mm, 1mm, 1.5mm, or 2mm (i.e., preferably selected within the range of 0.5mm-2mm). Of course, in other embodiments, the DuPont paper layer 2 and the area of ​​the first film layer 11 corresponding to the gas chamber 13 may also be fitted together without being pressed or bonded.

[0037] That is, the gas chamber 13 is divided into several gas column chambers 131 by several partitions 3, and the DuPont paper layer 2 is bonded to the partitions 3. However, the regions of the gas column chambers 131 corresponding to the first film layer 11 are not pressed together or bonded. This can ensure the stability of the connection between the first film layer 11 and the DuPont paper layer 2 through multi-point connection, and can also avoid the first film layer 11 and the DuPont paper layer 2 from being completely adhered and bonded together, which would excessively restrict the stretching of the film layer (when the gas column chamber 131 surrounded by the first film layer 11 is inflated).

[0038] Of course, in other embodiments, the DuPont paper layer 2 and the first film layer 11 can also be bonded at the edge. Alternatively, the DuPont paper layer 2 and the end face of the first film layer 11 can be completely bonded.

[0039] See Figure 1 and Figure 2 The multiple partitions 3 are all straight lines and can be arranged in a basically parallel manner. At this time, the air column chambers 131 are arranged side by side and extend in a preset direction (that is, they extend in basically the same direction) so that when the user injects air into the multiple air column chambers 131, the inflation speed of each air column chamber 131 is basically the same, thereby improving the uniformity of inflation among the multiple air column chambers 131.

[0040] Furthermore, in order to facilitate the user to inflate the air column chamber 131, so that each air column chamber 131 can be filled with gas more quickly and the inflation between different air column chambers 131 is more uniform, the gas filling 1 also includes an inflation component 15.

[0041] Furthermore, the inflation assembly 15 includes an inflation channel 151 and several flow guiding structures 152, all of which are connected to the inflation channel 151 and the flow guiding structures 152; each air column chamber 131 is correspondingly provided with a flow guiding structure 152, and the inflation direction of the flow guiding structure 152 is consistent with the extension direction of the air column chamber 131 (i.e., along the direction of inflation). Figure 1 (Y direction shown in the diagram). During inflation, the gas flows through the inflation channel 151 and then through different guide structures 152, and then fills the air column chamber 131 corresponding to the guide structure 152.

[0042] It should be noted that the "consistent extension direction" referred to here includes both parallel lines and relatively small angles between them. For example, when the extension direction of the air column chamber 131 is at an angle of 0-30° to the inflation direction of the flow guide structure 152, the directions can be considered consistent.

[0043] Furthermore, the number of guide structures 152 provided for each air column chamber 131 is equal, such as two, three or more, depending on actual needs (e.g., the radial width of each air column chamber 131, i.e., ...). Figure 1 Configure the settings for W2 (marked).

[0044] Furthermore, the flow guiding structure 152 is unidirectionally connected from the inflation channel 151 to the air column chamber 131 (i.e., unidirectionally connected along the inflation direction). That is, when the external air pressure is sufficiently high, the flow guiding structure 152 unidirectionally connects from the inflation channel 151 to the air column chamber 131; when not inflated, the pressure inside the air column chamber 131 prevents the flow guiding structure 152 from connecting. For example, the flow guiding structure 152 can be configured as two diaphragms positioned opposite each other. The side of the diaphragm closer to the air column chamber 131 is smaller, while the side closer to the inflation component 15 is relatively wider. During inflation, gas enters the air column chamber 131 between the two diaphragms; when not inflated, the two diaphragms are pressed together by the pressure inside the air column chamber 131, which can reduce air leakage to a certain extent.

[0045] Furthermore, in this embodiment, the DuPont paper layer 2 covers the area of ​​the first film layer 11 (the end face facing the external environment) corresponding to the inflation component 15. Of course, in other embodiments, the DuPont paper layer 2 may only cover the area of ​​the first film layer 11 (the end face facing the external environment) corresponding to the air column chamber 131.

[0046] Example 2 See Figure 3 and Figure 4 Based on the above embodiment 1, the difference in this embodiment is that: the gas filling 1 also includes several bending portions 14; the bending portions 14 divide the gas column chamber 131 into several sub-regions 1311, and the bending of the gas column chamber 131.

[0047] Specifically, the bending portion 14 includes a plurality of connecting channels 141 and a plurality of first adhesive points 142; the connecting channels 141 connect to sub-regions 1311 of the same air column chamber 131; at the first adhesive points 142, the DuPont paper layer 2, the first film layer 11 and the second film layer 12 are bonded to each other.

[0048] It is easy to understand that the connecting channel 141 can connect several sub-regions 1311. When the inflation component 15 is used to inflate one end of the air column chamber 131, all sub-regions 1311 can be inflated. The setting of the first bonding point 142 is beneficial to the bending of the air column chamber 131, and further beneficial to the bending of the composite air column packaging material, such as bending it into a box shape, bending and bonding it into a ring structure, bending it into a plate shape at a certain angle, etc., so as to expand the application range of the composite air column packaging material.

[0049] Furthermore, by bonding the DuPont paper layer 2, the first film layer 11, and the second film layer 12 together at the first adhesive point 142, a stable connection between the DuPont paper layer 2 and the gas filling 1 can be achieved.

[0050] In addition, since the composite air column packaging material forms the edge of the box when the bending part 14 is used to make the box structure, and the DuPont paper layer 2 has relatively high stiffness, this setting allows it to form the edge of the box locally, which can increase the structural strength and support of the box edge to a certain extent, and further increase the structural stability of the bent box.

[0051] Furthermore, if the width of the first bonding point 142 is W1 and the radial width of the air column chamber 131 is W2, then W1 / W2 satisfies: 0.5≤W1 / W2≤0.8. If W1 / W2 is set to 0.5, 0.6, 0.7 or 0.8, it is convenient for inflation and bending operations, and can also ensure the stability of the composite air column packaging material after bending.

[0052] Furthermore, along the inflation direction of the air column chamber 131 (i.e. Figure 3 As shown in the Y direction, the projection of the first bonding point 142 is located in the middle region of its corresponding sub-region 1311. That is, the connecting channel 141 is provided on both sides of the bend point so that the gas can uniformly fill the sub-region 1311. At this time, each connecting channel 141 can also be provided with a corresponding flow guide structure 152, that is, each gas column chamber 131 corresponds to two flow guide structures 152.

[0053] Example 3 See Figures 5 to 8Based on the above embodiment two, this embodiment also provides a packaging structure. Specifically, the packaging structure includes a middle part 100 and end parts 200 located at both ends of the middle part 100. Both the middle part 100 and the end parts 200 are configured as the composite air column packaging material provided in the above embodiment two, so that the middle part 100 and the end parts 200 can be bent into a rectangular box. After bending, the middle part 100 and the end parts 200 respectively form the side wall and end wall of the box.

[0054] Of course, in other embodiments, the end 200 may also be configured as other sealing support structures (such as injection-molded caps), support fillers (such as corrugated paper), etc.

[0055] It is worth noting that, for ease of inflation, the inflation components 15 located on the middle part 100 and the end part 200 have their inflation channels 151 interconnected. To facilitate bending to form the corresponding box body, the bending portions 14 on the middle part 100 and the bending portions 14 on the end part 200 are provided one-to-one to facilitate the subsequent formation of the edges of the box body.

[0056] It is also worth noting that the aforementioned "box" refers to a box-shaped structure, such as a triangular prism box, a hexagonal box, a rectangular box, etc. Because the two opposite sides of the middle part 100 are glued together to form an edge, and together they enclose a ring-shaped structure (see...). Figure 5 and Figure 7 The end portion 200 is designed according to the cross-section of the annular structure, and can be directly equal to the cross-section or spliced ​​together to form the cross-section. In other words, the difference between different boxes lies in the different annular structures formed by the middle portion 100, i.e., the different shapes of the end portions 200. However, the structures of the middle portion 100 and the end portions 200 themselves are not significantly different, as long as they can be bent. Therefore, this application uses a rectangular box as an example for explanation.

[0057] See Figures 5 to 8 The middle section 100 is divided into four areas by three bent sections 14. These four areas, when inflated, form the four side walls of a rectangular box. Each area has a sub-area 1311 to enhance the protective effect of the rectangular box. After bending into a box shape, the middle section 100 connects to its opposite sides to form an edge, and the three bent sections 14 each form three edges. The end section 200 is also divided into several areas by three bent sections 14. After bending, parts of the end section 200 are joined together to form the end walls of the rectangular box. The four side walls and two end walls form the receiving cavity 400 of the rectangular box, used to hold the items to be packaged.

[0058] Since the items to be packaged are mainly confined within the middle section 100, in order to increase the structural strength of the structure formed by the enclosed middle section 100, several sub-regions 1311 of each air column chamber 131 are located on different side walls; for two adjacent sub-regions 1311 of the same air column chamber 131, one end of one of them (see...) Figure 5 (A) is located in another (see Figure 5 In the direction of extension (B), to form an overlap, so that the two sub-regions 1311 (see) are arranged opposite to each other. Figure 5 (B) can be affected by two other relatively set sub-regions 1311 (see...) Figure 5 The support of the middle part (A) is compared to the support provided only by the bent part 14 on the middle part 100 (see...). Figure 8 As shown in the existing bending method, it can effectively improve the stability of the middle part 100, thereby improving the stability of the entire packaging structure.

[0059] In order to ensure a sealed and stable connection between the middle part 100 and the end part 200, in this embodiment, the packaging structure further includes a second adhesive point 300. The second adhesive point 300 is distributed on a portion of the sub-region 1311 of the end part 200. At the second adhesive point 300, the first film layer 11 and the second film layer 12 are bonded to each other.

[0060] It should be understood that during packaging, the area of ​​end 200 with the second adhesive point 300 is bent to be housed in the receiving cavity 400, while the area of ​​end 200 without the second adhesive point 300 is assembled to form the side wall of the rectangular box, ensuring that there is no excessive gap between end 200 and the middle part 100, thereby ensuring the sealing performance of the box. At the same time, it also facilitates the bending and sealing of end 200.

[0061] Furthermore, it is worth noting that there are various methods of "adhesion," such as hot-press bonding and bonding with adhesive layers. In this embodiment, the separator 3, the first adhesive point 142, and the second adhesive point 300 can all be formed by hot-pressing the first film layer 11 and the second film layer 12. Similarly, the first film layer 11 and the DuPont paper layer 2 can also be formed by hot-pressing.

[0062] Example 4 See Figure 9 Based on the above embodiment three, the difference in this embodiment is that: only one area of ​​the end 200 does not have the first adhesive point 142, and this area eventually forms the side wall of the rectangular box directly as a whole, without the need for splicing two parts.

[0063] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A composite air column packaging material, characterized in that, include: The gas filling (1) includes a first membrane layer (11), a second membrane layer (12), and a gas chamber (13) formed between the first membrane layer (11) and the second membrane layer (12). DuPont paper layer (2) covers at least one end face of the first film layer (11) away from the second film layer (12); The rigidity of the DuPont paper layer (2) is greater than that of the first film layer (11).

2. The composite air column packaging material according to claim 1, characterized in that, Both the gas filling (1) and the DuPont paper layer (2) are made of biodegradable PE material.

3. The composite air column packaging material according to claim 1, characterized in that, The first membrane layer (11) and the second membrane layer (12) are partially connected to form a plurality of partitions (3); The gas chamber (13) is divided into several gas column chambers (131) by several partitions (3). The DuPont paper layer (2) is bonded to the partition (3) and forms a preset gap with the area of ​​the first film layer (11) corresponding to the gas chamber (13).

4. The composite air column packaging material according to claim 3, characterized in that, Each of the aforementioned air column chambers (131) extends along a predetermined direction; The gas filling (1) also includes an inflation assembly (15), which includes an inflation channel (151) and several flow guiding structures (152). The inflation channel (151) is connected to several of the flow guiding structures (152); Each of the air column chambers (131) corresponds to at least one of the flow guiding structures (152), and the air-filling direction of the flow guiding structure (152) is consistent with the extension direction of the air column chamber (131).

5. The composite air column packaging material according to claim 4, characterized in that, The flow guiding structure (152) flows unidirectionally from the inflation channel (151) to the air column chamber (131).

6. A composite air column packaging material according to any one of claims 3-5, characterized in that, The gas filling (1) also includes several bends (14). The bend (14) divides the air column chamber (131) into several sub-regions (1311). The bent portion (14) includes a plurality of connecting channels (141) and a plurality of first adhesive points (142). The connecting channel (141) connects to a sub-area (1311) of the same air column chamber (131). At the first adhesive point (142), the DuPont paper layer (2), the first film layer (11) and the second film layer (12) are bonded to each other.

7. The composite air column packaging material according to claim 6, characterized in that, The width of the first adhesive point (142) is W1, and the radial width of the air column chamber (131) is W2. Then W1 / W2 satisfies: 0.5≤W1 / W2≤0.

8.

8. A packaging structure, characterized in that, It includes a middle part (100) and end parts (200) located at both ends of the middle part (100). The middle part (100) and the end part (200) can be bent into a box, and the middle part (100) and the end part (200) respectively form the side wall and end wall of the box; At least the intermediate portion (100) is configured as a composite air column packaging material as described in any one of claims 1-7 above.

9. A packaging structure according to claim 8, characterized in that, The end portion (200) is also configured as the composite air column packaging material; The composite air column packaging material includes a first membrane layer (11), a second membrane layer (12), and a plurality of air column chambers (131), each of the plurality of air column chambers (131) including a plurality of sub-regions (1311). The packaging structure also includes a second adhesive point (300), which is distributed on a portion of the sub-region (1311) of the end (200), where the first film layer (11) and the second film layer (12) are bonded to each other.

10. A packaging structure according to claim 9, characterized in that, The middle portion (100) is bent to form the sidewall of the box body. On the middle section (100), several sub-regions (1311) of each air column chamber (131) are located on different side walls; Two adjacent sub-regions (1311) of the same air column chamber (131) are connected by one end of the other extending in the same direction.

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