Air column type packaging structure

Abstract

The air column type packaging structure comprises an inflation body, after inflation, air columns in a middle area of the inflation body are bent at folding lines to form a three-dimensional box type structure, and each group of air column sections and the adjacent group of air column sections are in lap joint at the bending positions to form a plurality of faces, located between the left face and the right face, of the box type structure. Each group of air column sections form each main stress surface in a lap joint manner, so that deformation or springback caused by external force is reduced, the stability and the strength of the whole packaging structure are further enhanced, and the stress surfaces between the left surface and the right surface are all complete air column sections, so that the whole packaging structure is more stable. And the problem that the sealing line is easy to crack due to the fact that the splicing part is impacted when the stress surface is the splicing surface is solved. Compared with a traditional mode that a box type structure is formed by bending heat sealing separation lines between the air column sections, the air column sets can evenly disperse force to the adjacent faces in the length direction of the air column sections through the lap joint parts when subjected to external impact force, local stress concentration is avoided, and packaged objects can be effectively protected.

Description

Technical Field

[0001] This utility model relates to the field of inflatable packaging technology, and in particular to an air column packaging structure. Background Technology

[0002] Currently, air column express packaging boxes are gradually becoming one of the mainstream choices in the packaging market due to their lightweight, environmental friendliness, and good cushioning performance. Air column express packaging boxes on the market are mainly made of PE (polyethylene) or PA (polyamide). These materials have a certain degree of flexibility and impact resistance, providing a certain level of cushioning protection for goods during transportation and reducing damage caused by collisions, drops, etc.

[0003] However, in commercially available air column packaging structures, the main stress-bearing surfaces are often composed of multiple spliced ​​parts. This results in uneven pressure distribution when facing external forces, affecting the overall compressive strength of the packaging. Alternatively, the bends in the stress-bearing surfaces may be continuous heat-sealed structures between adjacent air columns. When folded into a box after inflation, the sides of adjacent air columns meet, failing to provide mutual support. This makes the packaging more prone to deformation under external pressure, reducing effective cushioning and protection for the contents. Therefore, in practical use, especially when packages are densely stacked or subjected to external pressure, air column packaging structures cannot adequately protect the contents, increasing the risk of damage to valuable, fragile goods or precision instruments during transportation. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an air column packaging structure, which solves the problem that the existing air column packaging structure is prone to deformation under external pressure and has weak protective ability.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An air column type packaging structure includes gas filling, the gas filling being able to form a box structure after inflation, the gas filling including a middle section and side sections located on both sides of the middle section corresponding to the left and right sides of the box structure;

[0007] The inflatable gas includes multiple parallel air columns that are inflatable and at least two fold lines perpendicular to the extension direction of the air columns. Each fold line includes multiple corner fold points corresponding to each air column. The at least two fold lines divide the air columns in the middle section into at least three air column segments in the extension direction. Each group of parallel air column segments in the middle section corresponds to one of the multiple faces of the box structure located between the left and right sides.

[0008] After inflation, the air column in the middle section bends at the fold line, and each group of air column segments overlaps with the adjacent group of air column segments at the bend, forming multiple faces of the box structure between the left and right sides; the side sections form the left and right sides of the box structure.

[0009] Furthermore, in the inflated and bent state, in the intermediate section, the ends of at least one group of air column segments are located in the extending direction of adjacent groups of air column segments to form an overlap.

[0010] Furthermore, when the box structure is a cuboid, the fold lines include a first fold line, a second fold line, and a third fold line, and the first fold line, the second fold line, and the third fold line divide the middle section into a first region, a second region, a third region, and a fourth region sequentially along the direction of the air column; or

[0011] When the box structure is a triangular prism, the folding lines include a first folding line and a second folding line, and the first folding line and the second folding line divide the middle section into a first region, a second region and a third region in sequence along the extension direction of the air column.

[0012] Furthermore, the side panel includes multiple air columns arranged side by side in the same direction as the middle panel. Each of the multiple air columns is provided with multiple point sealing units to form a point sealing area. The area of ​​the side panel without point sealing units is the air column area, and the air column area corresponds to the left or right side of the box structure.

[0013] Furthermore, when the box structure is a cuboid, the air column area is square in shape, and one side panel includes two air column areas and two point-sealing areas. The air column areas and point-sealing areas are spaced apart. When the gas is inflated, the two air column areas on the same side are combined to form the left or right side of the box structure. The point-sealing areas are foldable; or...

[0014] When the box structure is a cuboid, the air column area is square in shape, and one side panel includes one air column area and three point-sealing areas. When the gas is inflated, the air column area on one side forms the left or right side of the box structure, and the point-sealing areas are foldable; or...

[0015] When the box structure is a triangular prism, the shape of the air column area is triangular. One side panel area includes an air column area and two point sealing areas. The point sealing areas are located on both sides of the air column area. When the gas is inflated, the air column area on one side forms the left or right side of the box structure. The point sealing areas are foldable.

[0016] Furthermore, the gas filling also includes a sealing portion, which includes two first sealing portions disposed on both sides of the end in the direction of the gas column extension, and a second sealing portion disposed on the outermost side of any one of the side panels.

[0017] When the box structure is a cuboid, the symmetry line of the second region perpendicular to the extension direction of the air column is designated as the first fold line, and the symmetry line of the fourth region perpendicular to the extension direction of the air column is designated as the second fold line. The inflatable gas is folded along the first and second fold lines, so that the second sealing edge is folded into a U-shape and then heat-sealed. The two first sealing edges are heat-sealed together, and the inflatable gas as a whole forms an air column bag with an opening on one side. The air column bag forms the box structure after being inflated; or

[0018] When the box structure is a triangular prism, the symmetrical line of the first region perpendicular to the extension direction of the air column is set as the first fold line, and the symmetrical line of the third region perpendicular to the extension direction of the air column is set as the second fold line. The inflatable gas is folded along the first fold line and the second fold line, so that the second sealing edge is folded into a U-shape and then heat-sealed. The two first sealing edges are heat-sealed together, and the inflatable gas as a whole forms an air column bag with an opening on one side. The air column bag forms the box structure after being inflated.

[0019] Furthermore, the inflation gas also includes an inflation assembly, which includes an inflation channel and a flow guiding structure. The inflation channel is located at the top of the inflation gas and is perpendicular to the extension direction of the air column. An inflation port is provided on one side of the inflation channel. The flow guiding structure is located on the side of the air column near the inflation channel. The inflation channel is unidirectionally connected to several air columns through the flow guiding structure.

[0020] Furthermore, each air column is equipped with at least two flow guiding structures.

[0021] Furthermore, the gas filling includes an inner wall layer, an outer wall layer, and an outer covering layer. Each gas column is separated by continuous heat sealing. Each gas column includes the inner wall layer, the outer wall layer, and the outer covering layer. The outer surface of the inner wall layer and the inner surface of the outer wall layer of each gas column form an inner cavity for filling with gas. The outer covering layer is attached to the outer surface of the outer wall layer by means of coating or lamination.

[0022] Furthermore, the outer covering layer is a non-woven fabric; or

[0023] The outer covering layer is a thermal insulation material; or

[0024] The outer coating is a heat-insulating coating.

[0025] In summary, compared with the prior art, the present invention has at least the following beneficial effects:

[0026] This utility model provides an air column packaging structure, including gas inflation. After inflation, the air column in the middle section of the inflated area bends at the fold line to form a three-dimensional box structure. Each group of air column segments overlaps with adjacent groups of air column segments at the bend, forming multiple surfaces of the box structure between the left and right sides. By using overlapping air column segments to form the main stress surfaces, the geometric stability of the box structure is increased. The overlapping parts at the bends are more stable, reducing deformation or rebound caused by external forces, further enhancing the stability and strength of the overall packaging structure. Furthermore, the multiple stress surfaces between the left and right sides are all complete air column segments, preventing the problem of seal cracking caused by impacts at the joints when the stress surfaces are spliced. Compared to the traditional method of forming a box structure by bending through heat-sealed dividing lines between air column segments, this method allows the overlapping sections of each air column to evenly distribute the force along the length of the air column segment to adjacent surfaces when subjected to external impact. This effectively avoids localized stress concentration and thus effectively protects the packaged items. In addition to protecting regular items, it is also more effective at protecting high-value or fragile items, improving product versatility. Furthermore, the side panels forming the left and right sides of the box structure can completely enclose the packaged items. Attached Figure Description

[0027] 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.

[0028] Figure 1 This is a schematic diagram of the unfolded air column packaging structure provided in one embodiment of the present invention.

[0029] Figure 2 This is a schematic diagram showing the unfolded air column packaging structure provided in another embodiment of the present invention.

[0030] Figure 3 This is a schematic diagram showing the unfolded air column packaging structure provided in another embodiment of the present invention.

[0031] Figure 4 This is a cross-sectional schematic diagram of the air column packaging structure provided in one embodiment of the present invention, which forms a box structure after inflation.

[0032] Figure 5This is a cross-sectional schematic diagram of the air column packaging structure provided in another embodiment of the present invention, showing that it forms a box-like structure after inflation.

[0033] Figure 6 This is a schematic diagram of the structure of an air column bag provided in another embodiment of the present invention.

[0034] Figure 7 This is a schematic diagram of the structure of the outer coating provided in one embodiment of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 11. Middle area; 12. Side area; 13. First area; 14. Second area; 15. Third area; 16. Fourth area;

[0037] 2. Air column; 21. Air column segment;

[0038] 3. Fold line; 31. First fold line; 32. Second fold line; 33. Third fold line;

[0039] 4. Remove corner bends;

[0040] 51. Point-sealing area; 511. Point-sealing unit; 52. Air column area;

[0041] 61. First edge sealing section; 62. Second edge sealing section;

[0042] 71. First fold line; 72. Second fold line;

[0043] 8. Inflation assembly; 81. Inflation channel; 82. Flow guiding structure;

[0044] 91. Inner wall layer; 92. Outer wall layer; 93. Outer covering layer; 94. Inner cavity. Detailed Implementation

[0045] 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.

[0046] 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.

[0047] 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.

[0048] As attached Figure 1 To be continued Figure 3 As shown, an air column packaging structure includes gas inflation, which forms a box-like structure after inflation. The gas inflation includes a central section 11 and side sections 12 located on both sides of the central section 11, corresponding to the left and right sides of the box-like structure. The gas inflation includes multiple parallel air columns 2 that are capable of inflation and at least two fold lines 3 perpendicular to the extension direction of the air columns 2. Each fold line 3 includes multiple corner bends 4 corresponding to each air column 2, which helps to precisely control the bending position of the air columns 2. The at least two fold lines 3 connect the central section 11 to the box-like structure. The air column 2 is divided into at least three air column segments 21 in the extension direction. Each group of air column segments 21 arranged side by side in the middle section 11 corresponds to one of the multiple faces of the box structure between the left and right sides. After inflation, due to the presence of the fold line 3, the inflation gas can automatically complete the assembly. Each air column 2 in the middle section 11 bends at the fold line 3, and each group of air column segments 21 overlaps with the adjacent group of air column segments 21 at the bend, forming multiple faces of the box structure between the left and right sides. The side section 12 forms the left and right sides of the box structure.

[0049] Specifically, in some embodiments, the box structure can be a cuboid structure, such as... Figure 1 Or attached Figure 2As shown, three fold lines 3 divide the air columns 2 of the middle section 11 into four air column segments 21 in the extending direction. After inflation, they automatically bend through the fold lines 3. The four sets of air column segments 21 in the middle section 11 correspond to the front, top, back, and bottom surfaces of the box structure between the left and right sides. The left and right sides of the box structure can be a complete set of air column segments 21, as detailed in the attached figure. Figure 2 As shown; it can also be composed of two sets of air column segments 21 spliced ​​together, specifically as shown in the attached document. Figure 1 As shown; users can adjust it according to actual needs, and no limitation is made here. In some other embodiments, the box structure can also be a triangular prism structure, as shown in the attached figure. Figure 3 As shown, the two fold lines 3 divide the middle section 11 into three air column segments 21 in the direction of the air column 2 extension. After inflation, the three groups of air column segments 21 in the middle section 11 are automatically bent by the fold lines 3. The corresponding box structure is located on the front, back and bottom sides between the left and right sides. Each group of air column segments 21 overlaps with the adjacent group of air column segments 21 at the bend.

[0050] Because parcels are often densely stacked or subjected to external pressure during transportation, the main stress-bearing surface is either the left or right side of the box structure. Therefore, this invention addresses this issue by inflating the air column 2 in the middle section 11 and bending it at the fold line 3 to form a three-dimensional box structure. Each group of air column segments 21 overlaps with adjacent groups at the bend, creating multiple surfaces of the box structure between the left and right sides. By using overlapping air column segments 21 to form the main stress-bearing surfaces, the geometric stability of the box structure is increased. The bends are made more stable due to the overlapping portions of the air column segments 21, enhancing the overall stability and strength of the packaging structure. Furthermore, since the multiple stress-bearing surfaces between the left and right sides are all complete air column segments 21, this prevents the problem of seal cracking caused by impacts at the joints when the stress-bearing surfaces are spliced ​​surfaces, effectively improving the reliability of the air column packaging structure. Furthermore, compared to the traditional method of forming a box structure by bending through heat-sealed dividing lines between air column segments 21, this method, regardless of which air column 2 is subjected to external impact, can evenly distribute the force along the length of the air column segment 21 to adjacent surfaces through the overlapping portion. This effectively avoids localized stress concentration, reduces deformation or rebound caused by external forces, and thus effectively protects the packaged items. The side panels 12 form the left and right sides of the box structure, providing comprehensive coverage of the packaged items. In addition, depending on customer needs, whether a cuboid or triangular prism shape is desired, the shape requirements of different box structures can be met by adjusting the air inflation layout. Besides protecting conventional items, it can also more effectively protect items with special shapes, high value, or fragility, further enhancing the product's versatility.

[0051] For a single air column segment 21, it is less prone to deformation in the extending direction and has a better supporting effect. In some embodiments of this utility model, as shown in the appendix... Figure 4 As shown, when the corner bend 4 is set to be relatively long, it is possible that after inflation, when the air column 2 in the middle section 11 bends at the corner bend 4, the end of the air column segment 21 only overlaps with the adjacent air column segments 21 through the relatively long corner bend 4. This results in the air column segment 21 relying mainly on the connection at the corner bend 4 to bear the external force when subjected to external impact, failing to effectively distribute the external force to the adjacent air column segments 21. Consequently, the air column segment 21 is more prone to deformation at the corner bend 4, making it easier for the two overlapping air column segments 21 to shift, reducing the stability of the box structure and making it more susceptible to deformation due to external impact. Therefore, preferably, in the middle section 11, as shown in the attached... Figure 5 As shown, the ends of the air column segments 21 are located in the extension direction of adjacent groups of air column segments 21 to form an overlap and mutual support. This not only increases the overall thickness of the overlapping part, but also expands the support area between each group of air column segments 21 and the adjacent group of air column segments 21. When subjected to external impact, the force can be effectively transmitted and dispersed to other adjacent air column segments 21 along the extension direction of the air column segments 21, making the connection between the air column segments 21 tighter and more stable, further improving the stability of the three-dimensional box structure after inflation, and reducing the risk of deformation of the box structure due to external forces.

[0052] In some embodiments of this utility model, as shown in the appendix Figure 1 and attached Figure 2 As shown, when the box structure is a cuboid, the fold line 3 includes a first fold line 31, a second fold line 32, and a third fold line 33. The first fold line 31, the second fold line 32, and the third fold line 33 divide the middle section 11 into a first section 13, a second section 14, a third section 15, and a fourth section 16 sequentially along the direction of the air column 2. After inflation, as shown in the attached diagram... Figure 5As shown, the air column bends at each of the fold lines 3, allowing the inflation to automatically complete the assembly. The air column segment 21 of the first zone 13 overlaps with the air column segments 21 of the second zone 14 and the fourth zone 16 at the bend. The air column segment 21 of the second zone 14 overlaps with the air column segments 21 of the first zone 13 and the third zone 15 at the bend. The air column segment 21 of the third zone 15 overlaps with the air column segments 21 of the second zone 14 and the fourth zone 16 at the bend. The air column segment 21 of the fourth zone 16 overlaps with the air column segments 21 of the third zone 15 and the first zone 13 at the bend. Thus, the first zone 13 and the third zone 15 form two opposite faces of the cuboid box structure. The air column segments 21 of the second zone 14 and the fourth zone 16, after bending, form the other two opposite faces of the cuboid box structure, ultimately forming the four faces between the left and right faces of the corresponding box structure. The resulting box structure, regardless of which of the surfaces formed by the first zone 13 to the fourth zone 16 is used as the bottom surface, has a side surface with the air column segment 21 extending perpendicular to the bottom surface as the force-bearing surface. The air column segment 21 is less prone to deformation in the extending direction and has a better support effect. Therefore, the entire box structure has a better support and pressure resistance effect.

[0053] Based on the above embodiments, the side panel 12 includes multiple air columns 2 arranged side by side in the same direction as the middle panel 11. Each air column 2 is provided with multiple sealing units 511 to form a sealing area 51. The air columns 2 at both ends of the sealing units 511 are connected. The area of ​​the air column 2 without sealing units 511 is the air column area 52. After inflation, the air column area 52 corresponds to the left or right side of the box structure, providing support and maintaining the shape of the box structure. Since the sealing area 51 does not expand, it can be easily hidden and stored.

[0054] In some embodiments, as shown in the appendix Figure 1 As shown, when the box structure is a cuboid, the air column area 52 is square. One side panel 12 includes two air column areas 52 and two point-sealing areas 51. The air column areas 52 and point-sealing areas 51 are spaced apart. The air column areas 52 can be connected to two sets of air column segments 21 on any two spaced sides of the middle panel 11. The point-sealing areas 51 are connected to two sets of air column segments 21 on the remaining two spaced sides to achieve different structural splicing combinations. When inflated, the two air column areas 52 on the same side are spliced ​​together to form the left or right side of the box structure. The point-sealing areas 51 can be folded and hidden for storage without affecting the overall shape of the box structure. The flat area for inflation in this embodiment is smaller, saving more materials and costs.

[0055] In this embodiment, when the extension direction of the air column segment 21 on the left and right sides of the box structure is perpendicular to the ground, the two sets of air column segments 21 arranged alongside the left and right sides are the front and back of the box structure, respectively, and the two sets of air column segments 21 arranged alongside the point sealing area 51 are the top and bottom surfaces of the box structure, respectively. Thus, the extension direction of the air column segment 21 on four sides of the box structure is perpendicular to the ground, resulting in better support. Even if the left and right sides are composed of two air column areas 52, they are less likely to deform and separate.

[0056] In other embodiments, as shown in the appendix Figure 2 As shown, when the box structure is a cuboid, the shape of the air column area 52 is square. One side panel 12 includes one air column area 52 and three point sealing areas 51. The air column area 52 can be adjacent to any point sealing area 51, and the air column area 52 can be connected to a group of air column segments 21 on any side of the middle panel 11 to achieve different splicing combinations in the structure. When the air is inflated, the air column area 52 on one side forms the left or right side of the box structure, which has better integrity and is less likely to be separated. The point sealing areas 51 can be folded and hidden for storage without affecting the overall shape of the box structure.

[0057] It is worth noting that when the box structure is a cuboid, the user can also choose to include two air column areas 52 and two point sealing areas 51 in one side panel 12 and one air column area 52 and three point sealing areas 51 in the other side panel 12, depending on the actual situation. This is not limited here.

[0058] As attached Figure 3 As shown, when the box structure is a triangular prism, the fold line 3 includes a first fold line 31 and a second fold line 32. The first fold line 31 and the second fold line 32 divide the middle section 11 into a first section 13, a second section 14, and a third section 15 along the extension direction of the air column 2. After inflation, the air column bends at each fold line 3, allowing the inflation gas to automatically complete the assembly. The air column segment 21 of the first section 13 overlaps with the air column segments 21 of the second section 14 and the third section 15 at the bend. The air column segment 21 of the second section 14 overlaps with the air column segments 21 of the first section 13 and the third section 15 at the bend. The air column segment 21 of the third section 15 overlaps with the air column segments 21 of the second section 14 and the first section 13 at the bend. Thus, the first section 13, the second section 14, and the third section 15 form the three faces between the left and right sides of the triangular prism box structure.

[0059] In other embodiments, as shown in the appendix Figure 3As shown, the box structure is a triangular prism, and the air column area 52 is triangular in shape. One side panel 12 includes an air column area 52 and two point sealing areas 51. The point sealing areas 51 are located on both sides of the air column area 52. The air column area 52 can be connected to a set of air column segments 21 on any side of the middle panel 11 to achieve different splicing combinations in the structure. When inflated, the air column area 52 on one side forms the left or right side of the box structure. The point sealing areas 51 can be folded without affecting the overall shape of the box structure.

[0060] Of course, in other embodiments where the left and right sides do not need to be subjected to force, the side panel 12 can be a non-inflatable membrane structure that covers the left and right sides of the box structure to prevent objects from falling out of the box structure.

[0061] In some embodiments of this utility model, as shown in the appendix Figure 1 To be continued Figure 3 As shown, the gas filling also includes a sealing portion, which includes two first sealing portions 61 disposed on both sides of the end in the extension direction of the gas column 2, and a second sealing portion 62 disposed on the outermost side of any side panel 12. In some embodiments, the box structure is a cuboid, the symmetry line of the second region 14 perpendicular to the extension direction of the gas column 2 is designated as a first fold line 71, and the symmetry line of the fourth region 16 perpendicular to the extension direction of the gas column 2 is designated as a second fold line 72, as shown in the attached figure. Figure 6 As shown, the gas is inflated and folded along the first fold line 71 and the second fold line 72, so that the second sealing edge 62 is folded into a U-shape and then heat-sealed. The two first sealing edges 61 are heat-sealed together, and the gas is inflated to form an air column bag with an opening on one side, which is convenient for transportation and storage. After being inflated, the air column bag is restricted by each fold line 3 and each point sealing unit 511, and can automatically bend into a rectangular box structure according to a predetermined shape. In other embodiments, when the box structure is a triangular prism, the symmetrical line of the first region 13 perpendicular to the extension direction of the air column 2 is set as the first fold line 71, and the symmetrical line of the third region 15 perpendicular to the extension direction of the air column 2 is set as the second fold line 72. The gas is filled and folded along the first fold line 71 and the second fold line 72, so that the second sealing edge 62 is folded into a U-shape and then heat-sealed. The two first sealing edges 61 are heat-sealed together, and the gas filling forms an air column bag with an opening on one side, which is convenient for transportation and storage. After being filled with gas, the air column bag is restricted by each fold line 3 and each point sealing unit 511, and can automatically bend into a triangular prism box structure according to a predetermined shape.

[0062] In some embodiments of this utility model, as shown in the appendix Figure 1 To be continued Figure 4As shown, the gas inflation system also includes an inflation assembly 8, which includes an inflation channel 81 and a flow guiding structure 82. The inflation channel 81 is located at the top of the gas column and perpendicular to its extension direction. An inflation port is provided on one side of the inflation channel 81. The flow guiding structure 82 is located on the side of the gas column near the inflation channel 81, and is used to uniformly guide the air in the inflation channel 81 into the corresponding gas column 2. The inflation channel 81 is unidirectionally connected to several gas columns 2 through the flow guiding structure 82 to prevent gas in the gas column 2 from flowing back into the inflation channel 81. When the user inflates the gas through the inflation port, the air enters the gas column 2 through the inflation channel 81 and along each flow guiding structure 82, achieving the effect of automatic bending after inflation. Preferably, the flow guiding structure 82 is a one-way valve.

[0063] In some embodiments of this utility model, as shown in the appendix Figure 1 To be continued Figure 4 As shown, to improve inflation efficiency, each air column 2 is equipped with at least two flow guiding structures 82, allowing gas to flow into the air column 2 simultaneously through multiple flow guiding structures 82 during inflation, achieving rapid inflation. Furthermore, even if one flow guiding structure 82 becomes blocked, the corresponding air column 2 can still continue to inflate, providing redundancy.

[0064] In some embodiments of this utility model, as shown in the appendix Figure 7 As shown, the gas filling includes an inner wall layer 91, an outer wall layer 92, and an outer covering layer 93. Each gas column 2 is separated by continuous heat sealing. Each gas column includes an inner wall layer 91, an outer wall layer 92, and an outer covering layer 93. The outer surface of the inner wall layer 91 and the inner surface of the outer wall layer 92 of each gas column enclose an inner cavity 94. After the inner cavity 94 is filled with gas, an expanded gas column 2 is formed. The outer covering layer 93 is applied to the outer surface of the outer wall layer 92 by means of coating or film application, which protects the gas column 2 and effectively reduces the impact of wear or scratches that may be caused to the gas column packaging structure during use. It increases the surface strength of the gas filling and extends the service life. It can be used to package items with high protection requirements.

[0065] In some embodiments, the outer covering 93 is a non-woven fabric to protect the bag body from damage or puncture during use and to increase surface strength. In other embodiments, the outer covering 93 is an insulating material, which increases both surface strength and insulation. In still other embodiments, the outer covering 93 is a heat-insulating coating, which increases both surface strength and insulation, preventing external environmental factors from affecting the internal temperature. Users can choose the material of the outer covering 93 according to their actual needs; no limitation is made here.

[0066] 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 gas column type packaging structure comprising an inflation body capable of forming a box type structure after inflation, characterized in that, the inflation body comprises a middle sheet area and side sheet areas corresponding to left and right faces of the box type structure on both sides of the middle sheet area; the inflation body comprises a plurality of gas columns arranged in parallel and capable of being inflated, and at least two folding lines perpendicular to the extending direction of the gas columns, one of the folding lines comprises a plurality of corner-removing folding points corresponding to the gas columns, and the at least two folding lines divide the gas columns in the middle sheet area into at least three gas column segments in the extending direction, each group of the gas column segments in the middle sheet area corresponds to one of a plurality of faces between the left and right faces of the box type structure; after inflation, the gas columns in the middle sheet area are bent at the folding lines, and each group of the gas column segments and the adjacent group of the gas column segments are overlapped with each other at the bending position, forming a plurality of faces between the left and right faces of the box type structure; and the side sheet areas form the left and right faces of the box type structure.

2. The air column packaging structure according to claim 1, wherein In the state of being bent after inflation, the end of at least one group of the gas column segments is located in the extending direction of the adjacent group of the gas column segments in the middle sheet area to form an overlap. 3.The gas column type packaging structure according to claim 1 or 2, characterized in that, when the box type structure is a cuboid, the folding lines comprise a first folding line, a second folding line and a third folding line, and the first folding line, the second folding line and the third folding line sequentially divide the middle sheet area into a first area, a second area, a third area and a fourth area along the extending direction of the gas columns; or, when the box type structure is a triangular prism, the folding lines comprise a first folding line and a second folding line, and the first folding line and the second folding line sequentially divide the middle sheet area into a first area, a second area and a third area along the extending direction of the gas columns.

4. The gas column packaging structure according to claim 1 or 2, wherein The side sheet area comprises a plurality of gas columns arranged in parallel in the extending direction of the middle sheet area, a plurality of spot sealing units are respectively arranged on a plurality of the gas columns to form a spot sealing area, and a gas column area is formed in the region of the side sheet area where no spot sealing unit is arranged, and the gas column area corresponds to the left or right face of the box type structure. 5.The gas column type packaging structure according to claim 4, characterized in that, when the box type structure is a cuboid, the shape of the gas column area is square, one side of the side sheet area comprises two gas column areas and two spot sealing areas, the gas column areas and the spot sealing areas are arranged alternately, and when the inflation body is inflated, the two gas column areas on the same side are combined to form the left or right face of the box type structure, and the spot sealing areas are foldable; or, when the box type structure is a cuboid, the shape of the gas column area is square, one side of the side sheet area comprises one gas column area and three spot sealing areas, and when the inflation body is inflated, the gas column area on one side forms the left or right face of the box type structure, and the spot sealing areas are foldable; or, When the box structure is a triangular prism, the shape of the air column area is a triangle, one side of the side piece area includes an air column area and two point sealing areas, the point sealing areas are located on both sides of the air column area, when the inflatable body is inflated, one side of the air column area forms the left or right side of the box structure, and the point sealing areas are foldable.

6. The air column packaging structure according to claim 3, wherein The inflatable body further includes an edge sealing part, the edge sealing part includes two first edge sealing parts arranged on both sides of the end part in the air column extension direction, and a second edge sealing part arranged at the outermost side of any one of the side piece areas; When the box structure is a cuboid, a first folding line is arranged on the symmetry line of the second area perpendicular to the air column extension direction, a second folding line is arranged on the symmetry line of the fourth area perpendicular to the air column extension direction, the inflatable body is folded along the first folding line and the second folding line, the second edge sealing part is folded into a U-shaped structure and then heat sealed and connected, the two first edge sealing parts are heat sealed and connected, and the inflatable body as a whole forms an air column bag with an opening on one side, which forms the box structure after being inflated. When the box structure is a triangular prism, a first folding line is arranged on the symmetry line of the first area perpendicular to the air column extension direction, a second folding line is arranged on the symmetry line of the third area perpendicular to the air column extension direction, the inflatable body is folded along the first folding line and the second folding line, the second edge sealing part is folded into a U-shaped structure and then heat sealed and connected, the two first edge sealing parts are heat sealed and connected, and the inflatable body as a whole forms an air column bag with an opening on one side, which forms the box structure after being inflated.

7. The air column packaging structure of claim 1, wherein The inflatable body further includes an inflation assembly, the inflation assembly includes an inflation channel and a flow guide structure, the inflation channel is arranged on the top of the inflatable body and perpendicular to the air column extension direction, one side of the inflation channel is provided with an inflation port, and the flow guide structure is arranged inside the air column close to one side of the inflation channel. The inflation channel is unidirectionally communicated with the air columns through the flow guide structure.

8. The air column packaging structure according to claim 7, wherein At least two flow guide structures are arranged in each air column.

9. The air column packaging structure of claim 1, wherein The inflatable body includes an inner wall layer, an outer wall layer and an outer cover layer, the air columns are separated by continuous heat sealing, each air column includes the inner wall layer, the outer wall layer and the outer cover layer, the outer surface of the inner wall layer and the inner surface of the outer wall layer of each air column form an inner cavity, which is used for inflating gas, and the outer cover layer is attached to the outer surface of the outer wall layer by means of spraying or coating.

10. The air column packaging structure according to claim 9, wherein The outer cover layer is a non-woven fabric; or The outer cover layer is a thermal insulation material; or The outer cover layer is a heat insulation coating.

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