CN220885445U - Packaging structure - Google Patents

Abstract

The utility model provides a packaging structure which comprises a plurality of side panels, a fixing part and one or more protecting parts, wherein the side panels are mutually adjacent and are mutually connected and combined into a winding drum structure with openings at two ends, and the openings of the winding drum structure have a preset shape. The fixing part is fixedly connected with at least one side panel in the plurality of side panels and is used for fixing the circumference of the winding drum structure. The protection part is connected to one end or two ends of the winding drum structure, which are provided with openings, one protection part is arranged to cover one side edge of the openings, and the inside of the protection part is hollow. According to the embodiment of the utility model, the protection part is provided with the hollow buffer structure for protecting the corner position of the packaging structure, and the protection part is connected with the winding drum structure, so that a structural foundation is provided for integration, the use of fillers can be reduced, even the fillers are not required to be arranged, the cost is reduced, and the environmental pollution is reduced. And the side panel and the protection part can be made of paper board, so that the recycling rate is high, and the recycling cost is low.

Description

Packaging structure

Technical Field

The utility model relates to the technical field of packaging, in particular to a packaging structure.

Background

When the fragile articles are packaged and transported, the single-layer cartons are only suitable for effectively protecting the articles, and even the corrugated cartons have the defect of poor deformation absorbing capacity because of the thickness limitation of the corrugated paper, so that the articles are usually required to be additionally protected by placing fillers in the packaging boxes.

Common fillers include: foaming foam, air column bags, bubble paper, pearl wool and the like, the material cost and labor cost of packaging and transportation can be increased, relatively large pollution can be generated in the preparation process of the high polymer material, and meanwhile, waste fillers are difficult to recycle again, so that resource waste is caused.

The matters in the background section are only those known to the inventors and do not, of course, represent prior art in the field.

Disclosure of utility model

In view of one or more of the drawbacks of the prior art, an object of the present utility model is to provide a packaging structure comprising:

A plurality of side panels adjacent to each other and configured to be capable of being connected to each other to be combined into a roll structure having openings at both ends, the openings of the roll structure having a preset shape;

A fixing portion fixedly connected to at least one side panel of the plurality of side panels, and configured to fix a circumferential direction of the roll structure after the plurality of side panels are combined into the roll structure; and

One or more protective portions connected at one or both ends of the drum structure having an opening; each of the protecting parts is arranged to cover one of the sides of the opening, and the protecting part is hollow.

According to one aspect of the utility model, the packaging structure comprises a plurality of the protecting parts, and the protecting parts are configured to be combined into an annular structure matched with the shape of the opening, and the annular structure surrounds the circumference of the opening and covers all sides of the opening.

According to an aspect of the present utility model, wherein each of the protecting parts includes:

a first structural portion connected to one side edge of one of the side panels, and the side edge connected with the first structural portion is located at the opening position after the plurality of side panels are combined into a roll structure; and

The second structure part is connected with the first structure part and is abutted against the inner wall of the winding drum structure, and the first structure part, the second structure part and the side panels form a hollow structure with a triangular section.

According to an aspect of the present utility model, each of the protecting parts further includes:

And the third structural part is connected with the second structural part and is abutted to the position where the first structural part is connected with the side edge of the side panel.

According to an aspect of the present utility model, the protective parts include a plurality of the protective parts, and the first and second structural parts of adjacent protective parts have a space-avoiding part to avoid interference between adjacent protective parts.

According to one aspect of the utility model, the clearance portion is provided so that the adjacent protection portions abut against each other.

According to one aspect of the utility model, wherein the plurality of side panels, the securing portion and the one or more protecting portions are made from the same blank after being cut and folded; the fixing part is rotatably connected to one side panel, and the fixing part is configured to be capable of being stuck to other side panels to fix the reel structure in the circumferential direction.

According to one aspect of the utility model, wherein the fixing portion includes:

the connecting end is rotatably connected to one side panel;

The free end is arranged opposite to the connecting end and is provided with an adhesive layer so as to be adhered and fixed with other side panels; and

And the unpacking part is positioned between the connecting end and the free end, and is provided with a break line penetrating through the fixing part.

According to one aspect of the utility model, the side panels are machined with through slots.

According to one aspect of the utility model, the packaging structure further comprises:

The side baffle is arranged at the opening position of the winding drum structure and is arranged to cover the annular structure formed by the combination of the protection parts.

Compared with the prior art, the embodiment of the utility model provides a packaging structure, the protection part is arranged at the opening position of the winding drum structure formed by the side panels, the protection part provides a hollow buffer structure for protecting the corner position of the packaging structure, the protection part is connected with the winding drum structure, a structural foundation is provided for integration, the use of fillers can be greatly reduced, even for part of packaged articles, the fillers are not required, the cost is reduced, and meanwhile, the environmental pollution can be reduced. And the side panel and the protection part can be made of paper board, so that the recycling rate is high, and the recycling cost is low.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of a package structure in one embodiment of the utility model;

FIG. 2 is an expanded schematic view of a packaging structure in one embodiment of the utility model;

fig. 3 is a schematic illustration of the folding of the guard in one embodiment of the utility model.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, and may be mechanically connected, electrically connected, or may communicate with each other, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

Fig. 1-3 show a specific structure of a packaging structure 1 according to an embodiment of the utility model, the packaging structure 1 being described below in connection with fig. 1-3.

As shown in fig. 1, the packaging structure 1 in the present embodiment includes a plurality of side panels 10, a fixing portion 20, and a protecting portion 30. Wherein a plurality of side panels 10 are adjacent to each other and are arranged to be connected to each other so as to be combined into a roll structure having openings at both ends, the side panels 10 together form the side walls of the roll structure, and in various embodiments of the utility model, the side panels 10 may overlap, i.e. two or more side panels 10 are superimposed in the direction of the same side wall of the roll structure. In a preferred embodiment of the present utility model, the side panels 10 may be configured as an integral formation as shown in fig. 2, for example, the side panels 10 are made of cardboard with fold lines along which they are folded and spliced, end to end, to obtain a roll structure. Of course, the plurality of side panels 10 may be separately provided, and connected to each other by bonding, anchoring, or the like, and may be combined together to form a roll structure having openings at both ends.

The side panels 10 in this embodiment together form the sides of a roll structure, both ends of which have openings, wherein the openings have a predetermined shape. In this embodiment, the interior of the drum structure is used to accommodate the packaged article, and the openings at both ends may be blocked by other structures, or semi-blocked by the protective portion 30 as shown in fig. 1. The opening of the drum structure has a predetermined shape, and further, the side panel 10 may be provided in a flat plate shape, i.e., the drum structure has an equal diameter, and the cross-sectional shape perpendicular to the opening direction is consistent with the opening shape. In particular, the shape of the opening of the reel structure may be rectangular as shown in fig. 1, or may be other shapes, such as circular, triangular or other polygonal shapes.

In the present embodiment, the fixing portion 20 functions to stabilize the structure of the roll, and prevent the plurality of side panels 10 from being scattered. The fixing portion 20 is fixedly connected to at least one side panel 10 of the plurality of side panels 10, specifically, may be integrally formed with the side panel 10, or may be fixedly connected by adhesion or other means. After the plurality of side panels 10 are assembled into the roll structure, the fixing portion 20 is used to fix the circumferential direction of the roll structure so that the plurality of side panels 10 are maintained in the assembled roll structure. The fixing portion 20 may be configured as a hoop around the circumference of the spool structure, or may be configured to fix two side panels 10 connected end to end in the spool structure, for example, the fixing portion 20 is configured as a paste head connected to one side of the side panels 10 and is adhered to the other side panel 10.

The packaging structure 1 comprises one or more protecting parts 30, the protecting parts 30 being connected to one or both ends, preferably both ends, of the reel structure having openings. Wherein each of the protecting parts 30 is provided to cover one of the sides of the opening, as shown in fig. 1, in a specific embodiment, the packing structure 1 includes a rectangular opening-shaped roll structure formed by combining four side panels 10, and the packing structure 1 may be provided to include four protecting parts 30 corresponding to the four sides of the rectangular opening, respectively, and when the protecting parts 30 are provided at both ends of the roll structure, 8 protecting parts 30 may be provided corresponding to each of the sides of the opening at both ends, respectively. The protective portion 30 may also be provided to cover only one side of the opening of the drum structure, or a portion of the side, which may be selected depending on the particular shape of the packaged article. For a roll structure with a circular opening shape or with an arc-shaped edge, the protection part 30 can also be used to cover all or part of the side edges of the opening shape, for example, the arc-shaped range is divided into a plurality of straight edges, and the corresponding protection part 30 is formed.

Specifically, according to a preferred embodiment of the present utility model, the packaging structure 1 may be provided to include a plurality of protecting parts 30, and the plurality of protecting parts 30 may be provided to be capable of being combined with each other in a ring-shaped structure matching the shape of the opening of the roll structure, such as a rectangular frame formed by four protecting parts 30 shown in fig. 1. The annular structure formed by combining the plurality of protection parts 30 surrounds the circumference of the opening, and can cover all sides of the opening, namely, the protection parts 30 form an annular protection range in the circumference of the opening. The ring-shaped structure formed by combining the protecting parts 30 can be formed on the radial outer side, the inner side or both the inner side and the outer side of the opening, and is preferably positioned on the inner side of the opening, so that the outer surface of the packaging structure 1 is kept flat, a plurality of packaging structures are convenient to stack, store and transport, and occupied space is reduced.

The inside of the protecting portion 30 in the present embodiment is hollow, wherein the inside of the protecting portion 30 refers to the internal space of one protecting portion 30, and does not represent the hollow area surrounded by four protecting portions 30 shown in fig. 1. The protection portion 30 is formed at an edge position of the packaging structure 1, taking the cuboid shape shown in fig. 1 as an example, the cuboid has 12 edges, wherein 8 protection portions 30 can be provided to respectively correspond to 8 edges at two ends of the reel structure, and the hollow protection portion 30 structure can provide compression buffering to protect the edges.

Further, in practical application, the side wall of the reel structure and the packaged article inside can provide a certain degree of supporting force by virtue of the structure, and at the edge position, the possibility of damage is higher due to the fact that the pressure is higher when the packaged article is extruded and collided due to the small contact area. In this case, the side edge at the opening position is protected by the hollow protecting portion 30 in the present embodiment, and the protecting effect on the packaged object can be remarkably improved. Therefore, the packing material can be reduced or even not used in the present embodiment, and the protection of the packaged object can be realized, and the protecting portion 30 can be integrally formed with the side panel 10, so that the processing difficulty and the processing cost are reduced, the structure is simplified, and the recycling is easy.

As shown in fig. 2, according to a preferred embodiment of the present utility model, each of the protection parts 30 includes a first structural part 31 and a second structural part 32. Taking one protection portion 30 as an example, the first structure portion 31 is connected to one side edge of one side panel 10, and the side edge to which the first structure portion 31 is connected is located at an opening position of the spool structure. Specifically, the protection portion 30 is connected to the side panel 10, that is, by interconnecting the first structure portion 31 with a side edge of the side panel 10 located at the opening position.

Further, the first structure portion 31 and the side panel 10 may be cut from the same blank, and the first structure portion 31 and the side panel 10 may be rotatably connected, for example, pressed to form a rotatable indentation. The first structure 31 can be folded with respect to the side panel 10, for example from a fully unfolded configuration shown in fig. 2 to an upwardly folded configuration shown in fig. 3. Meanwhile, the fixing portion 20 may be provided to be cut and folded from the same piece of blank, preferably cardboard, as the side panel 10 and the protecting portion 30.

The second structure portion 32 is connected with the first structure portion 31, and the second structure portion 32 abuts against the inner wall of the spool structure, and the first structure portion 31, the second structure portion 32 and the side panel 10 together form a hollow structure with a triangular cross section, wherein the first structure portion 31, the second structure portion 32 and the side panel 10 respectively correspond to three sides of the triangle.

The second structure portion 32 and the first structure portion 31 are also preferably rotatably connected to reduce the space occupied by the package structure 1 when it is unfolded in a plane, such as the unfolded plane shape shown in fig. 2, and the unfolded plane shapes of the plurality of package structures 1 can be stacked up and down to facilitate storage and transportation. By folding the first structure portion 31 so as to abut against the side panel 10, as shown in fig. 3, a triangular structure protruding from the plane of the side panel 10 is formed, and the package structure 1 can be pressed to a certain extent, for example, when the package structure 1 is pressed in the opening direction of the drum structure, the protection portion 30 can absorb a certain deformation, and the packaged article directly acting inside can be prevented from being damaged by receiving an excessive pressure.

Of course, the protecting portion 30 may be provided as a hollow structure having other cross-sectional shapes, for example, a rectangular, preferably triangular cross-sectional hollow structure, which has higher stability and higher resistance to compression set.

Further, each of the protection parts 30 further includes a third structural part 33, and the third structural part 33 is connected to the second structural part 32 and abuts at a connection position of the first structural part 31 and the side surface of the side panel 10. The third structure portion 33 can further improve the structural strength of the protection portion 30, reduce the possibility of detachment of the second structure portion 32 from the surface of the side panel 10, and avoid structural failure of the protection portion 30. The third structure 33 may also be arranged in rotatable connection with the second structure 32, as shown in fig. 2 in an expanded view, and in a preferred embodiment of the utility model the first structure 31, the second structure 32 and the third structure 33 may be arranged to be connected to the side panel 10 in sequence, cut out of the same blank as the side panel 10.

For embodiments in which the packaging structure 1 comprises a plurality of protecting parts 30, the protecting parts 30 are preferably arranged in the same connection, for example, as shown in fig. 2, the packaging structure 1 comprises four side panels 10, which form a drum structure capable of forming a rectangular opening, and one protecting part 30 can be arranged in each side panel 10 towards both ends of the opening position, namely, the first structure part 31 in one protecting part 30 is connected.

When a plurality of the protection parts 30 are provided at the opening position of one side of the packing structure 1, the plurality of the side panels 20 are connected to each other, and the angle between the adjacent sides at the opening position becomes small after the combination into the roll structure, since the protection parts 30 are protruded from the plane of the side panels 10, it is preferable that the space avoiding parts 34 are formed at both ends of the protection parts 30 to avoid the mutual interference between the adjacent protection parts 30, and according to the preferred embodiment of the present utility model, the first and second structure parts 31 and 32 of the protection parts 30 may be processed to have the space avoiding parts 34. Specifically, as shown in fig. 2 and 3, for example, a part of the blank may be removed by cutting at both ends of the blanks of the first and second structure portions 31 and 32 to form the void portion 34.

Further, the clearance portion 34 is provided so that adjacent protection portions 30 can abut against each other, for example, as shown in fig. 1, after the four side panels 10 are combined into a rectangular open roll structure, the first structural portions 31 of the adjacent two protection portions 30 abut against each other, and the second structural portions 32 are similar. In this embodiment, the adjacent protecting portions 30 can provide mutual support, so that the structural strength of the protecting portions 30 is further improved, and especially in the embodiment in which the protecting portions 30 cover all sides of the opening, the protecting portions 30 are combined into a ring structure, and the adjacent protecting portions 30 are abutted against each other, so that the overall stability of the packaging structure 1 can be improved.

According to an embodiment of the present utility model, the side panel 10, the fixing portion 20 and the protecting portion 30 are integrally cut from the same blank, wherein the fixing portion 20 is rotatably connected to one side panel 10, preferably to the side panel 10 at a position close to the edge among the side panels 10 arranged side by side. When the plurality of side panels 10 are assembled into the roll structure, the fixing portion 20 can be adhered to other side panels 10 to be fixed in alignment in the circumferential direction of the roll structure.

Preferably, taking the four side panels 10 shown in fig. 2 as an example, the fixing portion 20 is rotatably connected to the side panel 10 at the rightmost side (right side in fig. 2), and after the four side panels 10 are combined into a roll structure with a rectangular opening, the fixing portion 20 may be bent and adhered to other side panels 10, preferably the side panel 10 at the leftmost side in fig. 2. The fixing portion 20 may be glued to either the outside or the inside of the web structure, preferably the outside, in order to facilitate the unpacking of the packaging structure 1.

According to an embodiment of the present utility model, the fixing portion 20 includes a connection end 21, a free end 22 and a tamper-evident portion 23, and the whole of the fixing portion 20 may be a flat plate structure, wherein different positions are divided into the connection end 21, the free end 22 and the tamper-evident portion 23. The connecting end 21 is rotatably connected to one of the side panels 10, and the fixing portion 20 is connected to the side panel 10 according to the above, i.e., is configured to be connected to the side panel 10 through the connecting end 21.

The free end 22 represents an end of the fixing portion 20 that is not connected to the side panel 10, and is disposed opposite to the connection end 21, and the position of the free end 22 can be rotated with the rotation of the connection end 21 relative to the side panel 10. The free end 22 has a glue layer 24, that is, glue is formed at the position of the free end 22, and the free end 22 can be adhered and fixed to other side panels 10 through the glue layer 24, so that two opposite ends of the fixing portion 20 are connected to the side panels 10, to fix the winding drum structure in the circumferential direction, and prevent the plurality of side panels 10 from being scattered. Further, wherein the glue layer 24 may be preformed at the free end 22, for example by forming a double sided glue at the free end 22, it is advantageous to simplify the process of assembling the packaging structure 1.

The tamper evident portion 23 is located between the connecting end 21 and the free end 22, and the tamper evident portion 23 is machined with a break line extending through the securing portion 20. The break line can be manually torn, in this embodiment, after being adhered by the adhesive layer 24, the package structure 1 forms a seal, and when the package structure 1 needs to be opened, the break line can be torn directly from the position of the break line, so that the connecting end 21 and the free end 22 are separated from each other, and the circumferential fixing effect of the fixing portion 20 on the reel structure is eliminated, so that the package structure 1 can be opened.

The present embodiment provides a form of setting of the fixing portion 20 that facilitates sealing and unsealing, and after being adhered and fixed by the adhesive layer 24, the self-locking can be achieved, and the packaged article cannot be taken out therefrom without damaging the packaging structure 1. The sealing process does not need to wind adhesive tape on the surface of the packaging structure 1 for auxiliary sealing, so that the packaging efficiency can be improved while the cost is reduced. On the other hand, the package structure 1 in this embodiment can be opened by tearing the tamper-evident portion 23 manually by a user without the aid of any other tool.

According to a preferred embodiment of the utility model, the side panels 10 of the packaging structure 1 are also provided with through slots 11, preferably the through slots 11 being located in part of the side panels 10 of the packaging structure 1. As shown in fig. 1, the side panel 10 forms the outer surface of the package structure 1, and the through groove 11 is formed in the side panel 10, so that the side panel can be used as a handle for the package structure 1, and is convenient to carry.

As shown in fig. 1, even if the protecting portion 30 covers the entire side of the opening, the annular inner portion of the protecting portion 30 combined into the annular structure may be provided so as not to entirely cover the entire range of the opening, which can improve the structural strength of the protecting portion 30, and reduce the size of the protecting portion 30, thereby saving the blank. A window is provided on the side of the packaging structure 1 (the open position of the reel structure). In the specific embodiment of the present utility model, the packaging structure 1 further comprises a side baffle (not shown in the drawings) disposed at the opening position of the reel structure and covering the ring-shaped structure formed by the combination of the protecting portions 30, wherein the side baffle is preferably disposed in the protecting portions 30, and the side baffle is blocked from falling off by the protecting portions 30. The side baffle can protect packaged articles, and further, the side baffle can also be processed into transparent and hollow structures to serve as a window.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A packaging structure, comprising:

A plurality of side panels adjacent to each other and configured to be capable of being connected to each other to be combined into a roll structure having openings at both ends, the openings of the roll structure having a preset shape;

A fixing portion fixedly connected to at least one side panel of the plurality of side panels, and configured to fix a circumferential direction of the roll structure after the plurality of side panels are combined into the roll structure; and

One or more protective portions connected at one or both ends of the drum structure having an opening; each of the protecting parts is arranged to cover one of the sides of the opening, and the protecting part is hollow.

2. The packaging structure of claim 1, comprising a plurality of said protecting portions, wherein the plurality of said protecting portions are configured to be combined into a ring-shaped structure matching the shape of said opening, and to surround the circumference of said opening, covering all sides of said opening.

3. The packaging structure of claim 2, wherein each of the protecting portions comprises:

a first structural portion connected to one side edge of one of the side panels, and the side edge connected with the first structural portion is located at the opening position after the plurality of side panels are combined into a roll structure; and

The second structure part is connected with the first structure part and is abutted against the inner wall of the winding drum structure, and the first structure part, the second structure part and the side panels form a hollow structure with a triangular section.

4. A packaging structure as claimed in claim 3, wherein each of the protecting portions further comprises:

And the third structural part is connected with the second structural part and is abutted to the position where the first structural part is connected with the side edge of the side panel.

5. A packaging structure as claimed in claim 3, comprising a plurality of said protecting portions, said first and second ones of adjacent protecting portions having a void portion to avoid interference between adjacent protecting portions.

6. The packaging structure of claim 5, wherein the void portions are disposed such that adjacent ones of the protective portions abut each other.

7. The packaging structure of any one of claims 1-6, wherein the plurality of side panels, the securing portion, and the one or more protecting portions are formed from the same blank after being cut and folded; the fixing part is rotatably connected to one side panel, and the fixing part is configured to be capable of being stuck to other side panels to fix the reel structure in the circumferential direction.

8. The packaging structure of claim 7, wherein the securing portion comprises:

the connecting end is rotatably connected to one side panel;

The free end is arranged opposite to the connecting end and is provided with an adhesive layer so as to be adhered and fixed with other side panels; and

And the unpacking part is positioned between the connecting end and the free end, and is provided with a break line penetrating through the fixing part.

9. The packaging structure of any one of claims 1-6, wherein the side panels are machined with through slots.

10. The packaging structure of claim 2, further comprising:

The side baffle is arranged at the opening position of the winding drum structure and is arranged to cover the annular structure formed by the combination of the protection parts.