Adhesive-free folding box

Abstract

The utility model provides an adhesive-free folding box, and relates to the technical field of folding boxes, the adhesive-free folding box comprises a box bottom plate, first side plates and second side plates, two opposite side surfaces of the box bottom plate are respectively provided with the first side plates, and the other two opposite side surfaces of the box bottom plate are respectively provided with the second side plates; the first side plate comprises a main body part and infolding parts, an indentation line exists between the main body part and the box bottom plate, the two infolding parts are arranged on the two sides of the main body part respectively in the length direction of the indentation line, the indentation line is arranged between the infolding parts and the main body part, and the infolding parts are buckled on the box bottom plate; the second side plate comprises an inner side part and an outer side part, the outer side part is connected with the box bottom plate, an indentation line exists between the outer side part and the box bottom plate, the inner side part is connected with one side, deviating from the box bottom plate, of the outer side part, an indentation line exists between the inner side part and the outer side part, the inner side part is attached to the inner side face of the outer side part, the inner folding part is attached between the inner side part and the outer side part, and the inner side part is buckled on the box bottom plate. According to the glue-free folding box, glue is not used, and the trouble caused by debonding of an existing storage box adopting glue is eliminated.

Description

Technical Field

[0001] The present application belongs to the technical field of folding boxes, and in particular relates to a glue-free folding box. Background Art

[0002] At present, the food stored in cold storage is all stored in storage boxes with double-sided tape or self-adhesive strips. After freezing, the double-sided tape or self-adhesive strips on these storage boxes will become ineffective and lose their adhesion. The packaging is easy to fall apart and often scatters, which increases the labor intensity of the workers in the warehouse and also brings inconvenience to the purchasers. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a glue-free folding box to solve the technical problem in the prior art that after the storage box is frozen, the double-sided tape or self-adhesive strip attached to the storage box will become ineffective and lose its adhesiveness, causing the packaging to easily fall apart.

[0004] To achieve the above objectives, the technical solution adopted in this application is:

[0005] The present application provides a non-adhesive folding box, comprising a box bottom plate, a first side plate and a second side plate, wherein:

[0006] Two opposite sides of the box bottom plate are respectively provided with first side plates, and the other two opposite sides of the box bottom plate are respectively provided with second side plates;

[0007] The first side panel includes a main body and an inner folding portion. There is an indentation line between the main body and the bottom plate. Two inner folding portions are respectively arranged on both sides of the main body along the length direction of the indentation line. The indentation line between the inner folding portion and the main body is snapped onto the bottom plate.

[0008] The second side panel includes an inner portion and an outer portion, the outer portion is connected to the bottom plate with an indentation line therebetween, the inner portion is connected to a side of the outer portion facing away from the bottom plate with an indentation line therebetween, the inner portion is attached to the inner side surface of the outer portion, the inner folded portion is attached between the inner portion and the outer portion, and the inner portion is snapped onto the bottom plate;

[0009] The main bodies of the two first side panels and the outer sides of the two second side panels form circumferential side walls of the adhesive-free folding box.

[0010] Optionally, the inner portion is snapped onto the main body.

[0011] Optionally, first inner snap portions are provided on two opposite free edges of the inner portion, and main body snap holes are provided on the edge of the main body close to the inner folded portion, and the first inner snap portions are respectively inserted into corresponding main body snap holes on the main body.

[0012] Optionally, an inner folding buckle portion is provided on the inner folding portion, and a box bottom buckle hole is provided on the side of the box bottom plate close to the outer portion, and the inner folding buckle portion is inserted into the corresponding box bottom buckle hole on the box bottom plate.

[0013] Optionally, a second inner snap portion is provided on an edge of the inner portion that is parallel to the indentation line between the inner portion and the outer portion, and the second inner snap portion is inserted into a corresponding box bottom plate snap hole on the box bottom plate.

[0014] Optionally, the edge of the main body away from the box bottom plate is wavy along the length direction of the main body.

[0015] Optionally, a plurality of ventilation holes are provided on the main body and / or the bottom plate of the box.

[0016] Optionally, a notch is provided on the side of the main body away from the box bottom plate; the notch is formed with a first edge, a second edge and a third edge, the first edge, the second edge and the third edge are connected in sequence, and the second edge is parallel to the indentation line between the main body and the box bottom plate.

[0017] Optionally, two mutually parallel indentation lines are arranged between the inner portion and the outer portion, and an opening is provided on the inner portion.

[0018] Optionally, the two indentation lines between the inner portion and the outer portion are respectively the first indentation line and the second indentation line, the area between the first indentation line and the second indentation line is the connecting portion, the first indentation line is between the connecting portion and the outer portion, the second indentation line is between the connecting portion and the inner portion, a partial area of ​​the connecting portion and a partial area of ​​the inner portion form a raised portion, one end of the raised portion is connected to the first indentation line, and the other end of the raised portion is the edge of the opening, a cutting line is formed between the area of ​​the connecting portion other than the raised portion and the raised portion, and a cutting line is formed between the area of ​​the inner portion other than the raised portion and the raised portion.

[0019] The beneficial effects of the present application are as follows: the adhesive-free folding box provided in this embodiment has a first side panel snapped onto the box bottom plate through an inner folding portion, and a second side panel snapped onto the box bottom plate through an inner portion, so that the adhesive-free folding box is formed into a box body by folding without using adhesive, thereby eliminating the trouble caused by the debonding of existing storage boxes using double-sided tape or self-adhesive strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1A schematic structural diagram of a non-adhesive folding box provided in an embodiment of the present application;

[0022] Figure 2 for Figure 1 A partial enlarged view of the

[0023] Figure 3 This is a schematic diagram of the unfolded structure of the adhesive-free folding box provided in an embodiment of the present application.

[0024] Among them, the reference numerals in the figures are:

[0025] 1-bottom panel; 2-first side panel; 3-second side panel; 4-ventilation hole; 5-indentation line; 6-cutting line;

[0026] 11-box bottom plate buckle hole;

[0027] 21-Main part; 22-Inward folding part;

[0028] 211-main body buckle hole; 212-wavy edge; 213-notch;

[0029] 2131-first edge; 2132-second edge; 2133-third edge;

[0030] 221-inward folding buckle portion;

[0031] 31-inner part; 32-outer part; 33-connecting part; 34-protruding part;

[0032] 311 - first inner buckle portion; 312 - second inner buckle portion; 313 - opening.

[0033] 51-first indentation line; 52-second indentation line; DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions and advantages of this application more clear, the following will further describe the implementation methods of this application in detail with reference to the accompanying drawings. The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain this application, and should not be understood as limiting this application.

[0035] In the description of this application, it should be understood that the terms "length", "width", "thickness", "top", "bottom", "inside", "outside", "up", "down", "left", "right", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this application.

[0036] To facilitate the clear description of the technical solutions of this application, the words "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that the words "first" and "second" do not limit the quantity or order of execution, and the words "first" and "second" do not necessarily mean different.

[0037] In this application, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0038] In this application, "and / or" is simply a way to describe the relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0039] It should be noted that, in this application, words such as "in one embodiment," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in one embodiment," "exemplarily," or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "in one embodiment," "exemplarily," and "for example" is intended to present the relevant concepts in a concrete manner.

[0040] Please also refer to Figure 1-Figure 3 Now, the adhesive-free folding box provided in the embodiment of the present application is described.

[0041] This embodiment provides a glue-free folding box, including a box bottom panel 1 , a first side panel 2 and a second side panel 3 .

[0042] See Figure 1 , which is a structural diagram of the adhesive-free folding box provided in the embodiment of the present application, please refer to Figure 3 , is a schematic diagram of the unfolded structure of the adhesive-free folding box provided in the embodiment of the present application, Figure 3 After folding the unfolded structure shown in Figure 1 The adhesive-free folding box shown.

[0043] See Figure 3, schematically shows the box bottom plate 1. The box bottom plate 1 is rectangular or square, and the first side plates 2 are respectively provided on two opposite sides of the box bottom plate 1, and the second side plates 3 are respectively provided on the other two opposite sides of the box bottom plate 1. Figure 3 A first side plate 2 is provided on both sides of the box bottom plate 1 along the Y-axis direction, and a second side plate 3 is provided on both sides of the box bottom plate 1 along the X-axis direction.

[0044] For the first side panel 2, see Figure 3 The first side panel 2 includes a main body 21 and an inner folding portion 22. The main body 21 is connected to the bottom plate 1. There is an indentation line 5 between the main body 21 and the bottom plate 1. Two inner folding portions 22 are respectively arranged on both sides of the main body 21 along the length direction of the indentation line 5 between the main body 21 and the bottom plate 1. There is also an indentation line 5 between the inner folding portion 22 and the main body 21. The inner folding portion 22 is snapped onto the bottom plate 1. The indentation line 5 between the inner folding portion 22 and the main body 21 is perpendicular to the indentation line 5 between the main body 21 and the bottom plate 1. Figure 3 The length of the main body 21 along the X-axis direction is substantially equal to the length of the bottom plate 1 along the X-axis direction. Figure 3 The first side panel 2 is folded into Figure 1 As shown, the main body 21 can be folded upward along the indentation line 5 between the main body 21 and the box bottom plate 1, so that the main body 21 and the box bottom plate 1 are perpendicular to each other; then the inner folding portion 22 can be folded inward along the indentation line 5 between the inner folding portion 22 and the main body 21, so that the inner folding portion 22 and the main body 21 are perpendicular to each other, and the inner folding portion 22 can be snapped onto the box bottom plate 1, so that the position of the first side panel 2 is fixed relative to the box bottom plate 1 after folding.

[0045] For the second side panel 3, see Figure 3 The second side panel 3 includes an inner portion 31 and an outer portion 32. The outer portion 32 is connected to the bottom panel 1 with an indentation 5 therebetween. The inner portion 31 is connected to the side of the outer portion 32 facing away from the bottom panel 1 with an indentation 5 therebetween. The inner portion 31 is attached to the inner side of the outer portion 32. The inner fold 22 of the first side panel 2 is inserted between the inner portion 31 and the outer portion 32, and the inner portion 31 is snapped onto the bottom panel 1.

[0046] See also Figure 3 , schematically showing the inner portion 31 and the outer portion 32. The length of the outer portion 32 along the Y axis is substantially equal to the length of the box bottom plate 1 along the Y axis. Figure 3 The second side panel 3 is folded as shown. Figure 1As shown, first fold the outer portion 32 upward along the indentation line 5 between the outer portion 32 and the bottom plate 1 so that the outer portion 32 is perpendicular to the bottom plate 1, and then fold the inner portion 31 along the folding line between the inner portion 31 and the outer portion 32 so that the inner portion 31 fits the inner side of the outer portion 32, and snap the inner portion 31 onto the bottom plate 1 so that the position of the first side panel 2 is fixed relative to the bottom plate 1 after folding. Figure 3 The second side panel 3 is folded as shown. Figure 1 As shown, the inner portion 31 may be folded along the indentation line 5 between the inner portion 31 and the outer portion 32 first, and then folded upward along the indentation line 5 between the outer portion 32 and the box bottom plate 1 .

[0047] See Figure 1 The main bodies 21 of the two first side panels 2 and the outer sides 32 of the two second side panels 3 form the circumferential side walls of the adhesive-free folding box.

[0048] When folding the first side panels 2 and the second side panels 3, the two first side panels 2 can be folded first, and then the two second side panels 3. Of course, the two second side panels 3 can also be folded first, and then the two first side panels 2; or other folding methods can be used. In addition, the inner folding portions 22 on both sides of the main body 21 mentioned above need to be attached between the inner side portion 31 and the outer side portion 32.

[0049] In this embodiment, the length of the box bottom plate 1 along the X-axis direction can be set to be greater than the length along the Y-axis direction. At this time, the length of the main body 21 of the first side panel 2 along the X-axis direction is greater than the length of the outer side 32 of the second side panel 3 along the Y-axis direction, that is, the main body 21 of the first side panel 2 is the long side of the glue-free folding box, and the outer side 32 of the second side panel 3 is the short side of the glue-free folding box; or, the length of the box bottom plate 1 along the Y-axis direction can be set to be greater than the length along the X-axis direction. At this time, the length of the main body 2 of the first side panel 2 along the X-axis direction is set to be less than the length of the outer side 32 of the second side panel 3 along the Y-axis direction, that is, the main body 21 of the first side panel 2 is the short side of the glue-free folding box, and the outer side 32 of the second side panel 3 is the long side of the glue-free folding box; or, the length of the main body 21 of the first side panel 2 along the X-axis direction is set to be equal to the length of the outer side 32 of the second side panel 3 along the Y-axis direction. See Figure 3 , which illustrates that the length of the main body portion 21 of the first side plate 2 along the X-axis direction is greater than the length of the outer portion 32 of the second side plate 3 along the Y-axis direction.

[0050] The adhesive-free folding box provided in this embodiment has a first side panel 2 snapped onto the box bottom panel 1 via an inner folding portion 22, and a second side panel 3 snapped onto the box bottom panel 1 via an inner portion 31, so that the adhesive-free folding box is formed into a box body by folding without using adhesive, thereby eliminating the trouble caused by the debonding of existing storage boxes using double-sided tape or self-adhesive strips.

[0051] In one embodiment, the inner portion 31 is snap-fitted onto the main body 21 .

[0052] See Figure 3 , indicating that the inner part 31 and the main body 21 are included. The inner part 31 is snapped onto the main body 21 to facilitate the stability of the adhesive-free folding box structure.

[0053] In a specific embodiment, see Figure 3 The inner side portions 31 are respectively snapped onto the corresponding main body portions 21 on both sides along the long Y-axis direction, that is, the two inner side portions 31 are connected to the corresponding main body portions 21 to improve the stability of the adhesive-free folding box.

[0054] Regarding the inner portion 31 being snapped onto the main body 21, in one embodiment, see Figure 3 A first inner snap-fit ​​portion 311 is provided on the two opposite free edges of the inner portion 31, and a main body snap-fit ​​hole 211 is provided on the edge of the main body 21 close to the inner folding portion 22. The first inner snap-fit ​​portion 311 is respectively inserted into the corresponding main body snap-fit ​​holes 211 on the main body 21.

[0055] See Figure 3 , the inner portion 31 is provided with first inner buckle portions 311 on both sides along the long Y axis direction, and the main body portion 21 is provided with a main body buckle hole 211 on the edge near the inner folding portion 22. When the second side panel 3 is folded, the first inner buckle portion 311 is inserted into the corresponding main body buckle hole 211 on the main body portion 21, for example, see Figure 3 For the inner portion 31 arranged on the left side, the first inner buckle portion 311 above it is matched with the main body buckle hole 211 arranged above the box bottom plate 1 and located on the left side of the main body 21.

[0056] Preferably, the first inner buckle portion 311 is interference-fitted with the main body buckle hole 211 , so that the first inner buckle portion 311 is clamped on the main body buckle hole 211 .

[0057] The structure provided by this embodiment in which the inner portion 31 is snapped onto the main body 21 has a simple structure and is easy to operate when folded.

[0058] Regarding the buckling of the inner folding portion 22 on the bottom plate 1, in one embodiment, see Figure 3 An inner folding buckle portion 221 is provided on the inner folding portion 22, and a box bottom buckle hole 11 is provided on the side of the box bottom plate 1 close to the outer portion 32, and the inner folding buckle portion 221 is inserted into the corresponding box bottom buckle hole 11 on the box bottom plate 1.

[0059] See also Figure 3, schematically shows that an inner folding buckle portion 221 is formed on the inner folding portion 22 near the outer portion 32, and each inner folding portion 22 is provided with an inner folding buckle portion 221. The adhesive-free folding box includes four inner folding portions 22, so four box bottom plate buckle holes 11 are provided on the box bottom plate 1. Figure 3 Two box bottom plate buckle holes 11 are respectively provided on the left and right sides of the box bottom plate 1 along the X-axis direction. Preferably, the inner folding buckle portion 221 is interference fit with the box bottom plate buckle hole 11, so that the inner folding buckle portion 221 is stuck on the box bottom plate buckle hole 11.

[0060] The structure provided in this embodiment in which the inner folding portion 22 is snapped onto the box bottom plate 1 has a simple structure and is easy to operate when folded.

[0061] Regarding the inner portion 31 being snapped onto the bottom plate 1, in one embodiment, see Figure 3 A second inner buckle portion 312 is provided on the edge of the inner portion 31 parallel to the indentation line 5 between the inner portion 31 and the outer portion 32 , and the second inner buckle portion 312 is inserted into the corresponding box bottom plate buckle hole 11 on the box bottom plate 1 .

[0062] See Figure 3 , schematically shows that two second inner buckle parts 312 are provided on the inner part 31, and the two second inner buckle parts 312 are respectively inserted into two corresponding box bottom buckle holes 11. Of course, a second inner buckle part 312 that can be inserted into the box bottom buckle hole 11 can also be provided on the inner part 31.

[0063] The second inner snap-in portion 312 is inserted into the snap-in hole 11 of the box bottom plate, that is, the inner folded snap-in portion 221 and the second inner snap-in portion 312 both share the snap-in hole 11 of the box bottom plate; the position of the second inner snap-in portion 312 on the inner portion 31 can also be changed to insert it into other newly added holes on the box bottom plate 1.

[0064] The structure provided in this embodiment in which the inner portion 31 is snapped onto the box bottom plate 1 has a simple structure and is easy to operate when folded.

[0065] In one embodiment, see Figure 1 and Figure 2 The edge of the main body 21 away from the box bottom plate 1 is wavy along the length direction of the main body 21, that is, a wavy edge 212 is formed.

[0066] from Figure 1 and Figure 2 , showing a wavy edge 212, which can prevent the main body 21 from scratching the user's skin away from the side of the box bottom plate 1.

[0067] In addition, the wavy edge 212 of the main body 21 can be cut by a wavy knife.

[0068] In one embodiment, a plurality of ventilation holes 4 are provided on the main body 21 and / or the box bottom plate 1 .

[0069] See Figure 1 , indicating that multiple ventilation holes 4 are provided on the main body 21 and the box bottom plate 1.

[0070] For example, see Figure 1 The air vents 4 on the main body 21 are oval in shape and arranged in pairs. The air vents 4 on the bottom plate 1 are elongated, with some extending along the X-axis and others along the Y-axis. The shape and number of the air vents 4 on the main body 21 and bottom plate 1 are not limited.

[0071] In addition, since the bottom plate 1 has to bear the main weight of the food in the adhesive-free folding box, it is not easy to open a large air vent 4 on the bottom plate 1 in consideration of the load-bearing capacity of the bottom plate 1 .

[0072] In this embodiment, preferably, ventilation holes 4 are provided on both the main body 21 and the box bottom plate 1. Of course, ventilation holes 4 can also be provided only on the main body 21, or only on the box bottom plate 1, both of which are within the protection scope of this embodiment.

[0073] In this embodiment, by providing the ventilation holes 4 on the main body 21 and / or the box bottom plate 1, the weight of the adhesive-free folding box can be reduced.

[0074] In one embodiment, see Figure 1 and Figure 3 A notch 213 is provided on the side of the main body 21 away from the box bottom plate 1; the notch 213 is formed with a first edge, a second edge and a third edge, the first edge, the second edge and the third edge are connected in sequence, and the second edge is parallel to the indentation line 5 between the main body 21 and the box bottom plate 1.

[0075] In the embodiment based on the edge of the main body 21 on the side away from the box bottom plate 1 being wavy, the first edge, the second edge and the third edge are all wavy.

[0076] Preferably, the first edge, the second edge and the third edge form an inverted trapezoid.

[0077] In this embodiment, by providing the notch 213 on the main body 21 , the aesthetics of the adhesive-free folding box can be enhanced.

[0078] In one embodiment, see Figure 3Two parallel indentation lines 5 are arranged between the inner portion 31 and the outer portion 32. The two indentation lines 5 between the inner portion 31 and the outer portion 32 are respectively a first indentation line 51 and a second indentation line 52, and an opening 313 is provided on the inner portion 31.

[0079] By providing two mutually parallel indentation lines 5 , the inner portion 31 can be folded so that the inner side surface of the inner portion 31 fits in with the inner side surface of the outer portion 32 .

[0080] Specifically, see Figure 3 , schematically shows the first indentation line 51 and the second indentation line 52, the area between the first indentation line 51 and the second indentation line 52 is the connecting portion 33, the first indentation line 51 is between the connecting portion 33 and the outer portion 32, the second indentation line 52 is between the connecting portion 33 and the inner portion 31, a partial area of ​​the connecting portion 33 and a partial area of ​​the inner portion 31 form a raised portion 34, one end of the raised portion 34 is connected to the first indentation line 51, and the other end of the raised portion 34 is the edge of the opening 313, a cutting line 6 is formed between the area of ​​the connecting portion 33 other than the raised portion 34 and the raised portion 34, and a cutting line 6 is formed between the area of ​​the inner portion 31 other than the raised portion 34 and the raised portion 34.

[0081] See Figure 3 , shows the raised portion 34 of the adhesive-free folding box in the unfolded state, see Figure 1 , illustrates the raised portion 34 of the adhesive-free folding box in a folded state. Preferably, the raised portion 34 is in a trapezoidal shape.

[0082] Alternatively, see Figure 3 , the shape of the connecting portion 33 is trapezoidal.

[0083] Optionally, a groove is also provided on the edge of the inner portion 31 where the second inner buckle portion 312 is provided. Figure 3 , illustrating that the groove on the inner portion 31 is located between the two second inner buckling portions 312.

[0084] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A non-adhesive folding box, characterized in that: It includes a box bottom plate, a first side plate and a second side plate, wherein: The first side panels are respectively provided on two opposite sides of the box bottom plate, and the second side panels are respectively provided on the other two opposite sides of the box bottom plate; The first side panel includes a main body and an inner folding portion, an indentation line is formed between the main body and the bottom plate, and two inner folding portions are respectively arranged on both sides of the main body along the length direction of the indentation line between the main body and the bottom plate, and the inner folding portions are snapped onto the bottom plate; The second side panel includes an inner portion and an outer portion, the outer portion is connected to the bottom plate with an indentation line therebetween, the inner portion is connected to a side of the outer portion facing away from the bottom plate with an indentation line therebetween, the inner portion is attached to the inner side surface of the outer portion, the inner folded portion is attached between the inner portion and the outer portion, and the inner portion is snapped onto the bottom plate; The main bodies of the two first side panels and the outer sides of the two second side panels form circumferential side walls of the adhesive-free folding box.

2. The adhesive-free folding box according to claim 1, characterized in that: The inner portion is snapped onto the main body portion.

3. The adhesive-free folding box according to claim 2, characterized in that: The two opposite free edges of the inner part are provided with first inner snapping parts, and the edge of the main body close to the inner folding part is provided with a main body snapping hole, and the first inner snapping parts are respectively inserted into the corresponding main body snapping holes on the main body.

4. The adhesive-free folding box according to claim 1, characterized in that: An inner folding buckle portion is provided on the inner folding portion, and a box bottom buckle hole is provided on the side of the box bottom plate close to the outer portion, and the inner folding buckle portion is inserted into the corresponding box bottom buckle hole on the box bottom plate.

5. The adhesive-free folding box according to claim 4, characterized in that: A second inner buckle portion is provided on an edge of the inner portion that is parallel to the indentation line between the inner portion and the outer portion, and the second inner buckle portion is inserted into the corresponding box bottom plate buckle hole on the box bottom plate.

6. The adhesive-free folding box according to any one of claims 1 to 5, characterized in that: The edge of the main body away from the box bottom plate is wavy along the length direction of the main body.

7. The adhesive-free folding box according to any one of claims 1 to 5, characterized in that: A plurality of ventilation holes are arranged on the main body and / or the box bottom plate.

8. The adhesive-free folding box according to any one of claims 1 to 5, characterized in that: A notch is provided on the side of the main body away from the box bottom plate; the notch is formed with a first edge, a second edge and a third edge, the first edge, the second edge and the third edge are connected in sequence, and the second edge is parallel to the indentation line between the main body and the box bottom plate.

9. The adhesive-free folding box according to any one of claims 1 to 5, characterized in that: Two mutually parallel indentation lines are arranged between the inner portion and the outer portion, and an opening is arranged on the inner portion.

10. The adhesive-free folding box according to claim 9, characterized in that: The two indentations between the inner portion and the outer portion are respectively the first indentation line and the second indentation line, the area between the first indentation line and the second indentation line is the connecting portion, the connecting portion and the outer portion are the first indentation line, the connecting portion and the inner portion are the second indentation line, a partial area of ​​the connecting portion and a partial area of ​​the inner portion form a raised portion, one end of the raised portion is connected to the first indentation line, and the other end of the raised portion is the edge of the opening, a cutting line is formed between the area on the connecting portion other than the raised portion and the raised portion, and a cutting line is formed between the area on the inner portion other than the raised portion and the raised portion.

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