Packaging box

Abstract

The utility model provides a packaging box, which is formed by folding an unfolded sheet-shaped base material and is provided with a first surface and a second surface, and the first surface is back to the second surface. The packaging box comprises an outer box body and a lining, the outer box body comprises two first side plates and two second side plates, and the first side plates and the second side plates are alternately connected. The lining comprises a first folded plate, the first folded plate comprises two bottom plates, two supporting plates and a third side plate, and the side edge of one bottom plate is connected with the side edge of one second side plate. The junction of the bottom plate and the supporting plate is a first folding line, the junction of the supporting plate and the third side plate is a second folding line, the supporting plate is folded towards the second surface according to the first folding line, the third side plate is folded towards the first surface according to the second folding line, and therefore a containing cavity is defined by the first folding plate and one first side plate. According to the packaging box, the problem that the manufacturing cost of the packaging box is high can be solved, and the effect of reducing the production cost of the packaging box is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging paper boxes, in particular to a packaging box. Background Art

[0002] When using paper boxes to package products, the paper boxes are easily crushed, which makes the products inside the paper boxes easily damaged. Therefore, in order to protect the products inside the paper boxes, a box tray is usually placed inside the paper boxes, and the products are placed in the box tray to protect the products.

[0003] However, during production, the packaging box and the box tray are manufactured separately, and then the box tray is placed in the packaging box, which requires two sets of production equipment. The production process and the packaging process are both more complicated, and the manufacturing cost of the packaging box will also increase. Utility Model Content

[0004] In view of the above problems, the present invention is proposed to provide a packaging box that overcomes the above problems or at least partially solves the above problems, can solve the problem of high manufacturing cost of the packaging box, and achieve the effect of reducing the production cost of the packaging box.

[0005] Specifically, the present invention provides a packaging box, which is formed by folding an unfolded sheet-like substrate, and has a first surface and a second surface, wherein the first surface faces away from the second surface; the packaging box comprises:

[0006] an outer box body, the outer box body comprising two first side panels and two second side panels, the first side panels being alternately connected to the second side panels;

[0007] The lining includes a first folding plate; the first folding plate includes two bottom plates, two support plates and a third side plate, and the side edge of one of the bottom plates is connected to the side edge of one of the second side plates; the intersection of the bottom plate and the support plate is a first fold line, and the intersection of the support plate and the third side plate is a second fold line. The support plate is folded toward the second surface according to the first fold line, and the third side plate is folded toward the first surface according to the second fold line, so that the first folding plate and one of the first side plates define a storage cavity.

[0008] Optionally, when the third side panel is folded along the second folding line, at least one support piece is cut from the support panel at the second folding line, so that the support piece and the third side panel are in the same plane after the third side panel is folded.

[0009] Optionally, the sum of the widths of the support plates on both sides of the third side panel and the width of the third side panel is equal to the width of the first side panel.

[0010] Optionally, the sum of the widths of the two bottom plates and the width of the third side plate is equal to the width of the first side plate.

[0011] Optionally, both ends of one of the first side panels are respectively connected to a first end panel;

[0012] The lining also includes a second folding plate, which includes a vertical plate, a horizontal plate and a connecting plate, and the edge of the vertical plate is connected to the edge of the first end plate; the vertical plate and the horizontal plate intersect at a third fold line, and the horizontal plate and the connecting plate intersect at a fourth fold line. The horizontal plate is folded toward the second surface according to the third fold line, and the connecting plate is folded toward the second surface according to the fourth fold line, so that the second folding plate is supported on the bottom of the first folding plate.

[0013] Optionally, an upper edge of the third side panel is flush with an upper edge of the first side panel, and the sum of the length of the third side panel and the length of the vertical panel is equal to the length of the first side panel.

[0014] Optionally, the two ends of another first side panel are respectively connected to a second end panel, and the two ends of each second side panel are respectively connected to a third end panel and a fourth end panel, and the third end panel is arranged on the side of the second side panel away from the second folding panel; the length of the third end panel is greater than the width of the bottom panel.

[0015] Optionally, the third end plate includes a first plate segment and a second plate segment, the boundary between the first plate segment and the second plate segment is a fifth fold line, the length of the first plate segment is the same as the width of the bottom plate; the first plate segment is tapered from the second side plate to the second plate segment, and the width of the second plate segment is the same as the width of the end with the smaller width of the first plate segment.

[0016] Optionally, the sum of the length of the fourth end plate and the width of the vertical plate is less than or equal to the width of the first side plate.

[0017] Optionally, each of the first end plates is provided with a set of inclined first tear lines;

[0018] A pressing piece is provided on the first end plate away from the second folding plate, and a receiving groove cooperating with the pressing piece is provided on the first side plate connected to the first end plate, and the pressing piece is connected to the edge portion of the receiving groove; the connection between the pressing piece and the first end plate extends a second tear line obliquely toward the side of the first end plate.

[0019] In a packaging box of the present invention, in this embodiment, the packaging box includes an outer box body and an inner lining, the inner lining includes a first folding plate, the outer box body and the first folding plate are connected together, and the outer box body and the first folding plate are folded from an unfolded sheet-like substrate. When making the packaging box, the sheet-like substrate is cut into the desired shape, folded and pasted together to form the packaging box. When assembling the packaging box, the first folding plate is folded into an "X" shape, and the second surfaces of the two bottom plates of the first folding plate are pasted to the second surface of a first side plate adjacent to it, so that the first side plate and the first folding plate enclose and define a storage cavity. The product is placed in the storage cavity, and a space is formed between the first folding plate and the other first side plate. When the outer box body is squeezed, the first folding plate has a supporting function and can play a role in protecting the product. The production and assembly of the packaging box are relatively convenient. In addition, only one set of equipment is required to produce the outer box body and the inner lining, thereby reducing the production cost of the packaging box.

[0020] Furthermore, in the packaging box of the present invention, the packaging box is used to place the eye patch, and the eye patch is placed in the storage cavity to avoid the problem of damage to the eye patch caused by squeezing during transportation or storage.

[0021] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0023] Figure 1 This is a schematic structural diagram of a packaging box in an unfolded state according to one embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the length and width of a packaging box in an unfolded state according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic structural diagram of a packaging box after assembly according to one embodiment of the present utility model;

[0026] Figure 4 yes Figure 3 Schematic cross-section at AA in the middle;

[0027] Figure 5 yes Figure 3 Schematic cross-section at BB in the middle. DETAILED DESCRIPTION

[0028] Refer to the following Figures 1 to 5 To describe a packaging box of an embodiment of the present utility model. In the description of this embodiment, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indication does not exclude other features and may further include other features.

[0029] Unless otherwise expressly specified or limited, terms such as "disposed," "installed," "connected," "connected," "fixed," and "coupled" should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two elements or interaction between two elements, unless otherwise expressly limited. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact via another feature between them. That is, in the description of this embodiment, the first feature being "above," "above," and "above" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below," "below," or "below" the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of the present embodiment, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples.

[0032] Figure 1FIG. 1 is a schematic structural diagram of a packaging box in an unfolded state according to an embodiment of the present invention, as shown in FIG. Figure 1 As shown, and reference Figures 2 to 5 The present invention provides a packaging box 100, which is formed by folding an unfolded sheet-like substrate, and has a first surface and a second surface, wherein the first surface faces away from the second surface. Figure 1 The surface shown in is the first surface. The packaging box 100 includes an outer box body 10 and an inner liner 20. The outer box body 10 includes two first side panels 110 and two second side panels 120. The first side panels 110 and the second side panels 120 are alternately connected. The inner liner 20 includes a first folding plate 210. The first folding plate 210 includes two bottom panels 211, two support panels 212 and a third side panel 213. The side edge of a bottom panel 211 is connected to the side edge of a second side panel 120. The bottom panel 211 and the support panel 212 intersect at a first fold line 215, and the support panel 212 and the third side panel 213 intersect at a second fold line 216. The support panel 212 is folded toward the second surface according to the first fold line 215, and the third side panel 213 is folded toward the first surface according to the second fold line 216, so that the first folding plate 210 and the first side panel 110 define a storage cavity.

[0033] In this embodiment, the packaging box 100 includes an outer box body 10 and an inner lining 20, wherein the inner lining 20 includes a first folding plate 210. The outer box body 10 and the first folding plate 210 are connected together and are formed by folding an unfolded sheet-like substrate. When manufacturing the packaging box 100, the sheet-like substrate is cut into the desired shape, folded and glued together to form the packaging box 100. When assembling the packaging box 100, the first folding plate 210 is folded into a "F" shape. The second surfaces of the two bottom panels 211 of the first folding plate 210 are glued to the second surface of a first side panel 110 adjacent to the first folding plate 210, so that the first side panel 110 and the first folding plate 210 enclose and define a storage cavity. The product is placed in the storage cavity, and a space is formed between the first folding plate 210 and the other first side panel 110. When the outer box body 10 is squeezed, the first folding plate 210 provides support and protects the product. The packaging box 100 is relatively easy to manufacture and assemble. Moreover, only one set of equipment is needed to produce the outer box body 10 and the inner lining 20 , thereby reducing the production cost of the packaging box 100 .

[0034] In some embodiments of the present invention, the packaging box 100 is used to package the eye patch, and the eye patch is placed in the storage cavity to avoid the problem of damage to the eye patch caused by squeezing during transportation or storage.

[0035] In some embodiments of the present invention, a bottom plate 211 connected to the second side plate 120 serves as an adhesive plate, which is connected to the second surface of the first side plate 110 so that the two first side plates 110 and the two second side plates 120 enclose a receiving cavity.

[0036] In some embodiments of the present invention, Figure 1 As shown, when the third side panel 213 is folded along the second folding line 216 , at least one support piece 214 is cut from the support panel 212 at the second folding line 216 , so that the support piece 214 and the third side panel 213 are in the same plane after the third side panel 213 is folded.

[0037] In this embodiment, at least one support plate 212 is cut out from each support plate 212, and the support plate 212 is connected to the third side plate 213. After the third side plate 213 is folded, the support sheet 214 and the third side plate 213 are on the same plane, and the support sheets 214 are on both sides of the storage cavity. When the side of the packaging box 100 is squeezed and bent, that is, when the second side plate 120 is squeezed, the support sheets 214 on both sides abut against the second side plate 120, and the support sheets 214 play the role of supporting the second side plate 120 to prevent the products inside the storage cavity from being squeezed. In addition, the support sheet 214 is cut from the support plate 212, and the production method is simple.

[0038] In some preferred embodiments of the present invention, Figure 2 As shown, a support piece 214 is provided on each side of the third side plate 213 , and a length L4 of the support piece 214 is one third of a length L3 of the support plate 212 .

[0039] In this embodiment, a support piece 214 is cut out from each support plate 212. The support piece 214 is located in the middle position of the support plate 212. The length L4 of the support piece 214 is one third of the length L3 of the support plate 212, which can ensure the supporting function of the support piece 214 and the remaining part of the support plate 212.

[0040] In some other embodiments of the present invention, two support pieces 214 are provided on each side of the third side plate 213 , and the length of each support piece 214 is one fifth of the length of the support plate 212 .

[0041] In this embodiment, two support pieces 214 are cut out from each support plate 212, and the two support pieces 214 are arranged at intervals. The length of each support piece 214 is one-fifth of the length of the support plate 212, which can ensure the supporting function of the support piece 214 and the remaining part of the support plate 212.

[0042] In some embodiments of the present invention, Figure 2 and Figure 5 As shown, the sum of the width W3 of the support pieces 214 on both sides of the third side plate 213 and the width W2 of the third side plate 213 is equal to the width W1 of the first side plate 110 .

[0043] In this embodiment, the sum of the width W3 of the support sheet 214 and the width W2 of the third side panel 213 is equal to the width W1 of the first side panel 110. After the packaging box 100 is assembled, the support sheet 214 abuts the second side panel 120. The support sheet 214 supports the second side panel 120, reducing deformation of the packaging box 100 when the second side panel 120 is squeezed, thereby preventing the storage cavity from being squeezed and deforming, and protecting the products in the storage cavity. Furthermore, the two sides of the support sheet 214 abut against the second side panel 120, ensuring that the storage cavity is always located in the center of the packaging box 100, further preventing deformation of the storage cavity.

[0044] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the sum of the width W4 of the bottom plates 211 on both sides and the width W2 of the third side plate 213 is equal to the width W1 of the first side plate 110 .

[0045] In this embodiment, the sum of the width W4 of the bottom panels 211 on both sides and the width W2 of the third side panel 213 is equal to the width W1 of the first side panel 110. After the packaging box 100 is assembled, the two bottom panels 211 are attached to the sides of the first side panel 110, with the side edges of the two bottom panels 211 abutting against the second side edges. The support sheet 214 and the bottom panel 211 jointly support the two sides of the storage cavity, further preventing deformation of the storage cavity.

[0046] In some embodiments of the present invention, Figure 1 As shown, each end of a first side panel 110 is connected to a first end panel 130. The lining 20 also includes a second folding panel 220, which includes a vertical panel 221, a horizontal panel 222, and a connecting panel 223. The edges of the vertical panel 221 are connected to the edges of the first end panel 130. The vertical panel 221 and the horizontal panel 222 intersect at a third fold line 224, while the horizontal panel 222 and the connecting panel 223 intersect at a fourth fold line 225. The horizontal panel 222 is folded toward the second surface along the third fold line 224, and the connecting panel 223 is folded toward the second surface along the fourth fold line 225, so that the second folding panel 220 is supported on the bottom of the first folding panel 210.

[0047] In this embodiment, the outer box body 10 further includes a first end panel 130, and the inner lining 20 further includes a second folding panel 220, which is connected to the first end panel 130. When the packaging box 100 is assembled, the second folding panel 220 is folded toward the second surface along the third folding line 224 and the fourth folding line 225, and then the first surface of the connecting panel 223 is adhered to the second surface of the first side panel 110 connected to the first end panel 130. When the first end panel 130 closes the opening of the accommodating cavity, the folding of the first end panel 130 drives the second folding panel 220 to fold automatically, forming a quadrilateral between the second folding panel 220 and the first side panel 110. The horizontal panel 222 is perpendicular to the first folding panel 210 and abuts against the first folding panel 210, so that the second folding panel 220 is at the bottom of the first folding panel 210. After the packaging box 100 is assembled, the product is placed in the storage cavity. A gap exists between the storage cavity and the first end panel 130. When the first end panel 130 is squeezed, the second folding plate 220 provides support and protects the product. The second folding plate 220 is connected to the outer box body 10. Only one set of equipment is required to produce the outer box body 10 and the inner lining 20, reducing the production cost of the packaging box 100 and making the production and assembly of the packaging box 100 more convenient.

[0048] In some embodiments of the present invention, Figure 1 and Figure 4 As shown, the upper edge of the third side panel 213 is flush with the upper edge of the first side panel 110 , and the sum of the length L2 of the third side panel 213 and the length L5 of the vertical panel 221 is equal to the length L1 of the first side panel 110 .

[0049] In this embodiment, the upper edge of the third side panel 213 is flush with the upper edge of the first side panel 110, that is, after the packaging box 100 is assembled, the openings of the accommodating cavity and the storage cavity at the upper end are in the same plane. The second folding plate 220 is folded and is at the lower end of the storage cavity. The sum of the length L2 of the third side panel 213 and the length L5 of the vertical plate 221 is equal to the length L1 of the first side panel 110. After the packaging box 100 is assembled, the two ends of the second folding plate 220 are respectively in contact with the lower edge of the first folding plate 210 and the first end plate 130 below. When the first end plate 130 below is squeezed, the vertical plate 221 in the second folding plate 220 supports the first end plate 130, reducing the degree of deformation of the first end plate 130, thereby preventing the product in the accommodating cavity from being squeezed and damaged.

[0050] In some embodiments of the present invention, Figure 1 As shown, the two ends of another first side panel 110 are respectively connected to a second end panel 140, and the two ends of each second side panel 120 are respectively connected to a third end panel 150 and a fourth end panel 160, and the third end panel 150 is arranged on the side of the second side panel 120 away from the second folding panel 220.

[0051] In this embodiment, the outer box body 10 further includes a second end panel 140, a third end panel 150, and a fourth end panel 160. At the end where the upper edge of the third side panel 213 is flush with the upper edge of the first side panel 110, the first end panel 130, the second end panel 140, and the third end panel 150 are used to close the first opening of the packaging box 100. When assembling the packaging box 100, the third end panels 150 on both sides are folded, and then the first end panel 130 is folded, so that the first end panel 130 is located outside the third end panel 150. Finally, the second end panel 140 is folded again, so that the second end panel 140 is located outside the first end panel 130. At the end where the first end panel 130 is connected to the second folding panel 220, the first end panel 130, the second end panel 140, and the fourth end panel 160 are used to close the second opening of the packaging box 100. When assembling the packaging box 100, fold the fourth end panels 160 on both sides, then fold the first end panel 130 so that the first end panel 130 is outside the fourth end panel 160. Finally, fold the second end panel 140 so that the second end panel 140 is outside the first end panel 130.

[0052] In some embodiments of the present invention, the length L6 of the third end plate 150 is greater than the width W4 of the bottom plate 211 .

[0053] In this embodiment, since the length L6 of the third end plate 150 is greater than the width W4 of the bottom plate 211, when the third end plate 150 is folded, the third end plate 150 can abut the edge of the first folding plate 210. When the first end plate 130, the second end plate 140 and the third end plate 150 close the first opening of the packaging box 100, the closure is more complete and no gaps will appear.

[0054] In some embodiments of the present invention, Figure 1 As shown, the third end panel 150 includes a first panel segment 151 and a second panel segment 152. The boundary between the first panel segment 151 and the second panel segment 152 is a fifth fold line 153. The length L7 of the first panel segment 151 is the same as the width W4 of the bottom panel 211. The first panel segment 151 tapers from the second side panel 120 toward the second panel segment 152. The width of the second panel segment 152 is the same as the width of the smaller end of the first panel segment 151.

[0055] In this embodiment, the third end panel 150 includes a first panel segment 151 and a second panel segment 152. The first panel segment 151 is connected between the second side panel 120 and the second panel segment 152. The length L7 of the first panel segment 151 is equal to the width W4 of the bottom panel 211. When opening the first opening of the packaging box 100, the first panel segment 151 is pressed downward, and the first and second panel segments 151 and 152 are folded along the fifth fold line 153. When the first panel segment 151 is in contact with the second side panel 120, the second panel segment 152 is perpendicular to and abuts the support plate 212 of the first folding plate 210, facilitating the removal of products from the storage cavity.

[0056] In some embodiments of the present invention, the sum of the length L8 of the fourth end plates 160 on both sides and the width W5 of the vertical plates 221 is less than or equal to the width W1 of the first side plate 110 .

[0057] In this embodiment, the fourth end panel 160 is located at the end of the second side panel 120 that is closest to the second folding panel 220. When closing the second opening of the packaging box 100, the fourth end panel 160 is first folded toward the second opening. Then, when the first end panel 130 is folded, the first end panel 130 is pressed against the top of the fourth end panel 160. Because the first end panel 130 is connected to the second folding panel 220, the folding of the first end panel 130 drives the second folding panel 220 to move. If the fourth end panel 160 is too long, it will affect the movement of the second folding panel 220.

[0058] Preferably, the sum of the length L8 of the fourth end plate 160 on both sides and the width W5 of the vertical plate 221 is smaller than the width W1 of the first side plate 110, and there is a gap between the fourth end plate 160 and the vertical plate 221, so that when the second opening of the packaging box 100 is closed, the first end plate 130 can drive the second folding plate 220 to move.

[0059] In some embodiments of the present invention, Figure 1 As shown, each first end plate 130 is provided with a group of inclined first tear lines 40 .

[0060] In this embodiment, a first easy-tear line 40 is provided on the first end panel 130. When closing the opening of the packaging box 100, the first end panel 130 is folded, adhesive is applied to the first end panel 130, and then the second end panel 140 is folded so that the second end panel 140 is adhered to the outer side of the first end panel 130. The surface roughness of the first end panel 130 is increased along the first easy-tear line 40, which facilitates the adhesion of the first end panel 130 to the second end panel 140 and makes the adhesion between the first end panel 130 and the second end panel 140 more secure.

[0061] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, a first end panel 130, which is located away from the second folding panel 220, is provided with a pressing tab 60. A first side panel 110 connected to the first end panel 130 is provided with a receiving groove that mates with the pressing tab 60. The pressing tab 60 is connected to the edge of the receiving groove. A second tear line 50 extends obliquely toward the side of the first end panel 130 from the connection between the pressing tab 60 and the first end panel 130.

[0062] In this embodiment, a pressing tab 60 is provided on the first end panel 130 at the first opening of the packaging box 100. The pressing tab 60 is partially connected to the receiving slot. When opening the packaging box 100, the pressing tab 60 is pressed firmly to disconnect the pressing tab 60 from the receiving slot. The pressing tab 60 is then lifted upward, tearing the second tear lines 50 on both sides and opening the first opening of the packaging box 100. The provision of the pressing tab 60 and the second tear lines 50 eliminates the need for tools when opening the packaging box 100, making it more convenient to open the packaging box 100.

[0063] In some embodiments of the present invention, the packaging box 100 is made of 350g white cardboard, and a matte film is coated on the first surface of the white cardboard.

[0064] In this embodiment, the first surface of the white cardboard is covered with a matte film. After the packaging box 100 is assembled, the first surface is on the outside, which is waterproof and moisture-proof, thereby protecting the product in the packaging box 100.

[0065] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications consistent with the principles of the present invention can be directly determined or deduced from the contents disclosed herein without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. A packaging box, formed by folding an unfolded sheet-like substrate, having a first surface and a second surface, wherein the first surface faces away from the second surface; characterized in that: include: an outer box body, the outer box body comprising two first side panels and two second side panels, the first side panels being alternately connected to the second side panels; The lining includes a first folding plate; the first folding plate includes two bottom plates, two support plates and a third side plate, and the side edge of one of the bottom plates is connected to the side edge of one of the second side plates; the intersection of the bottom plate and the support plate is a first fold line, and the intersection of the support plate and the third side plate is a second fold line. The support plate is folded toward the second surface according to the first fold line, and the third side plate is folded toward the first surface according to the second fold line, so that the first folding plate and one of the first side plates define a storage cavity.

2. The packaging box according to claim 1, characterized in that: When the third side panel is folded along the second folding line, at least one support piece is cut from the support panel at the second folding line, so that the support piece and the third side panel are in the same plane after the third side panel is folded.

3. The packaging box according to claim 2, characterized in that: The sum of the widths of the support pieces on both sides of the third side panel and the width of the third side panel is equal to the width of the first side panel.

4. The packaging box according to claim 3, characterized in that: The sum of the width of the bottom plates on both sides and the width of the third side plates is equal to the width of the first side plates.

5. The packaging box according to claim 1, characterized in that: Two ends of one of the first side plates are respectively connected to a first end plate; The lining also includes a second folding plate, which includes a vertical plate, a horizontal plate and a connecting plate, and the edge of the vertical plate is connected to the edge of the first end plate; the vertical plate and the horizontal plate intersect at a third fold line, and the horizontal plate and the connecting plate intersect at a fourth fold line. The horizontal plate is folded toward the second surface according to the third fold line, and the connecting plate is folded toward the second surface according to the fourth fold line, so that the second folding plate is supported on the bottom of the first folding plate.

6. The packaging box according to claim 5, characterized in that: The upper edge of the third side panel is flush with the upper edge of the first side panel, and the sum of the length of the third side panel and the length of the vertical panel is equal to the length of the first side panel.

7. The packaging box according to claim 6, characterized in that: The two ends of another first side panel are respectively connected to a second end panel, and the two ends of each second side panel are respectively connected to a third end panel and a fourth end panel, and the third end panel is arranged on the side of the second side panel away from the second folding panel; the length of the third end panel is greater than the width of the bottom panel.

8. The packaging box according to claim 7, characterized in that: The third end plate includes a first plate segment and a second plate segment, the boundary between the first plate segment and the second plate segment is a fifth fold line, the length of the first plate segment is the same as the width of the bottom plate; the first plate segment is tapered from the second side plate to the second plate segment, and the width of the second plate segment is the same as the width of the end with the smaller width of the first plate segment.

9. The packaging box according to claim 7, characterized in that: The sum of the lengths of the fourth end plates on both sides and the widths of the vertical plates is less than or equal to the width of the first side plates.

10. The packaging box according to claim 5, characterized in that: Each of the first end plates is provided with a set of inclined first tear lines; A pressing piece is provided on the first end plate away from the second folding plate, and a receiving groove cooperating with the pressing piece is provided on the first side plate connected to the first end plate, and the pressing piece is connected to the edge portion of the receiving groove; the connection between the pressing piece and the first end plate extends a second tear line obliquely toward the side of the first end plate.

Images