Dinner plate packaging box

Abstract

The utility model discloses a dinner plate packaging box, which relates to the technical field of packaging, and comprises a folding paperboard, the folding paperboard comprises a bottom plate, a first folding part, a second folding part, a third folding part and a fourth folding part, the first folding part, the second folding part, the third folding part and the fourth folding part are respectively arranged on the upper side edge, the lower side edge, the left side edge and the right side edge of the bottom plate; the first folding part, the second folding part, the third folding part and the fourth folding part are folded in the direction of the bottom plate, the adjacent folding parts are locked through the corresponding lappets, and therefore the packaging box body is formed through folding, and when the dinner plate packaging box is used, a dinner plate is placed in the packaging box body; the first clamping groove and the second clamping groove formed in the inner wall of the packaging box body are connected with the two sides of the dinner plate in a clamped mode, so that the dinner plate can be fixed, the dinner plate can be well protected, packaging materials can be recycled conveniently, and safety and environment friendliness are achieved.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, and in particular to a dinner plate packaging box. Background Technology

[0002] As boxes used to package products, packaging boxes need to possess characteristics such as protecting goods, facilitating transportation, and being easy to display. The design and manufacture of packaging boxes mainly involve materials science, production processes, and environmental protection technologies. With increasing environmental awareness, more and more businesses and individuals are paying attention to the environmental performance of packaging boxes.

[0003] Currently, for the packaging and transportation of plates, the plates are usually wrapped in plastic film, then placed in a cardboard box of appropriate size, and the cardboard box is filled with foam particles to reduce shaking.

[0004] However, the aforementioned plate packaging method is rather cumbersome, and the removed packaging materials are difficult to fully recycle, resulting in plastic waste that pollutes the environment. Utility Model Content

[0005] The purpose of this utility model is to provide a dinner plate packaging box to solve the problems existing in the above-mentioned related technologies. By packaging dinner plates with a one-time molded folding cardboard box, it is easy to recycle the packaging materials, safe and environmentally friendly, and provides good protection for the dinner plates.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a dinner plate packaging box, including a folded cardboard. The folded cardboard includes a base plate, a first fold, a second fold, a third fold, and a fourth fold. The base plate is a square plate. The first fold, the second fold, the third fold, and the fourth fold are respectively disposed on the upper side, the lower side, the left side, and the right side of the base plate.

[0008] The first folding part includes a first side plate, a top plate, a latch, and a first flap. The lower side of the first side plate is folded and connected to the upper side of the bottom plate, the upper side of the first side plate is folded and connected to the lower side of the top plate, and the upper side of the top plate is folded and connected to the latch. There are two first flaps, and the two first flaps are folded and connected to the left side and right side of the first side plate, respectively.

[0009] The second folding part includes a second side plate and a first inner side plate. The upper side of the second side plate is folded and connected to the lower side of the bottom plate, and the lower side of the second side plate is folded and connected to the first inner side plate.

[0010] The third folding part includes a third side plate, a first connecting plate, a second inner side plate, and a second flap. The right side of the third side plate is folded and connected to the left side of the bottom plate. The left side of the third side plate is folded and connected to the right side of the second inner side plate through the first connecting plate. The lower side of the third side plate is folded and connected to the second flap. A first slot is provided on the second inner side plate.

[0011] The fourth folding part includes a fourth side plate, a second connecting plate, a third inner side plate, and a third flap. The left side of the fourth side plate is folded and connected to the right side of the bottom plate. The right side of the fourth side plate is folded and connected to the left side of the third inner side plate through the second connecting plate. The lower side of the fourth side plate is folded and connected to the third flap. A second slot is provided on the third inner side plate.

[0012] The first folding part, the second folding part, the third folding part, and the fourth folding part can all be folded towards the bottom plate, and the two first flaps can be inserted between the third side plate and the second inner side plate and between the fourth side plate and the third inner side plate, respectively. The second flap and the third flap can both be inserted between the second side plate and the first inner side plate. The tongue can be inserted between the top plate and the first inner side plate to form the packaging box body. The packaging box body can accommodate a plate, and the first slot and the second slot can respectively engage with the two sides of the plate.

[0013] Preferably, the first side plate is connected to the bottom plate via a first fold line, and the top plate is connected to the first side plate via a second fold line; the first side plate can be folded along the first fold line to be perpendicular to the bottom plate, and the top plate can be folded along the second fold line to be parallel to the bottom plate and located above the bottom plate.

[0014] Preferably, the second side plate is connected to the bottom plate via a third fold line, and the first inner side plate is connected to the second side plate via a fourth fold line; the second side plate can be folded along the third fold line to be perpendicular to the bottom plate, the first inner side plate can be folded along the fourth fold line towards the second side plate, and the side of the first inner side plate closest to the bottom plate can be tightly attached to the bottom plate.

[0015] Preferably, the third folding part further includes a fourth flap, which is folded and connected to the left side of the second inner side plate; when the third folding part is folded toward the bottom plate to form the left side of the packaging box body, the fourth flap can be tightly attached to the bottom plate.

[0016] Preferably, the third side panel is connected to the bottom plate via a fifth fold line, the first connecting plate is connected to the third side panel via a sixth fold line, the second inner side panel is connected to the first connecting plate via a seventh fold line, and the fourth flap is connected to the second inner side panel via an eighth fold line; the third side panel can be folded along the fifth fold line to be perpendicular to the bottom plate, the first connecting plate can be folded along the sixth fold line to be perpendicular to the third side panel, the second inner side panel can be folded along the seventh fold line to be parallel to the third side panel, and the fourth flap can be folded along the eighth fold line towards the third side panel and pressed tightly against the bottom plate.

[0017] Preferably, the upper side of the third side plate, the upper side of the first connecting plate, the upper side of the second inner side plate, and the upper side of the fourth flap are all flush, and the lower side of the first connecting plate, the lower side of the second inner side plate, and the lower side of the fourth flap are all flush and located above the lower side of the third side plate.

[0018] Preferably, the fourth folding part further includes a fifth flap, which is folded and connected to the right side of the third inner side plate; when the fourth folding part is folded toward the bottom plate to form the right side of the packaging box body, the fifth flap can be tightly attached to the bottom plate.

[0019] Preferably, the fourth side panel is connected to the base plate via a ninth fold line, the second connecting plate is connected to the fourth side panel via a tenth fold line, the third inner side panel is connected to the second connecting plate via an eleventh fold line, and the fifth flap is connected to the third inner side panel via a twelfth fold line; the fourth side panel can be folded along the ninth fold line to be perpendicular to the base plate, the second connecting plate can be folded along the tenth fold line to be perpendicular to the fourth side panel, the third inner side panel can be folded along the eleventh fold line to be parallel to the fourth side panel, and the fifth flap can be folded along the twelfth fold line towards the fourth side panel and pressed tightly against the base plate.

[0020] Preferably, the upper side edges of the fourth side plate, the second connecting plate, the third inner side plate, and the fifth flap are all flush with each other, and the lower side edges of the second connecting plate, the third inner side plate, and the fifth flap are all flush with each other and located above the lower side edge of the fourth side plate.

[0021] Preferably, the folded cardboard is corrugated cardboard.

[0022] This utility model achieves the following technical advantages compared to related technologies:

[0023] The present invention provides a plate packaging box comprising a folded cardboard, which includes a base plate, a first folded portion, a second folded portion, a third folded portion, and a fourth folded portion. The base plate is a square plate. The first folded portion, the second folded portion, the third folded portion, and the fourth folded portion are respectively disposed on the upper side, the lower side, the left side, and the right side of the base plate. By folding the first folded portion, the second folded portion, the third folded portion, and the fourth folded portion toward the base plate and locking adjacent folded portions together with corresponding flaps, the packaging box body is formed. In use, the plate is placed inside the packaging box body, and the first and second slots formed on the inner wall of the packaging box body respectively engage with the two sides of the plate to fix the plate in place.

[0024] The dinner plate packaging box provided by this utility model is a one-time molded folding cardboard box. The molding method is disc folding. It utilizes the insertion and extrusion between each folding part and the locking between each flap, eliminating the need for glue sealing. This makes the packaging process faster and smoother, while also facilitating the recycling of packaging materials, making it safe and environmentally friendly. Furthermore, the packaging box body is designed with a first and second slot specifically for fixing the dinner plate. The friction between the first and second slots and the dinner plate, as well as the interlocking force between the corresponding structures, supports and suspends the dinner plate, firmly fixing it inside the packaging box body. This fixing method can also disperse and absorb external pressure, has a good shock-absorbing effect, and can effectively prevent impact vibration during transportation, providing excellent protection for the dinner plate. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the unfolded state of the dinner tray packaging box provided in an embodiment of this utility model;

[0027] Figure 2 A schematic diagram of the folded forming state of the dinner plate packaging box provided in this embodiment of the utility model.

[0028] In the diagram: 1-bottom plate, 2-first side plate, 3-top plate, 4-insert tongue, 5-first flap, 6-second side plate, 7-first inner side plate, 8-third side plate, 9-first connecting plate, 10-second inner side plate, 1001-first slot, 11-second flap, 12-fourth flap, 13-fourth side plate, 14-second connecting plate, 15-third inner side plate, 1501-second slot, 16-third flap, 17-fifth flap. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] The purpose of this utility model is to provide a dinner plate packaging box to solve the problems existing in related technologies. By packaging dinner plates in a one-time molded folding cardboard box, it is easy to recycle the packaging materials, safe and environmentally friendly, and provides good protection for the dinner plates.

[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] like Figures 1-2 As shown, this embodiment provides a dinner plate packaging box, including folded cardboard. In this embodiment, the folded cardboard is preferably corrugated cardboard. The folded cardboard includes a base plate 1, a first folded part, a second folded part, a third folded part, and a fourth folded part. The base plate 1 is a square plate. The first folded part, the second folded part, the third folded part, and the fourth folded part are respectively disposed on the upper side, the lower side, the left side, and the right side of the base plate 1.

[0033] It should be noted that the descriptions of the upper, lower, left, and right sides of the base plate 1 indicate the orientation or positional relationship based on the attached... Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] In this embodiment, the first folding part includes a first side plate 2, a top plate 3, a tongue 4, and a first flap 5. The lower side of the first side plate 2 is folded and connected to the upper side of the bottom plate 1, the upper side of the first side plate 2 is folded and connected to the lower side of the top plate 3, and the upper side of the top plate 3 is folded and connected to the tongue 4. There are two first flaps 5, and the two first flaps 5 are folded and connected to the left side and right side of the first side plate 2, respectively.

[0035] Specifically, the first side plate 2 is connected to the base plate 1 via a first fold line (i.e., the first fold line, the lower side edge of the first side plate 2, and the upper side edge of the base plate 1 coincide, and the same applies below), and the top plate 3 is connected to the first side plate 2 via a second fold line; when folding, the first side plate 2 is folded along the first fold line to be perpendicular to the base plate 1, and the top plate 3 can be folded along the second fold line to be parallel to the base plate 1 and located above the base plate 1.

[0036] In this embodiment, the second folding part includes a second side plate 6 and a first inner side plate 7. The upper side of the second side plate 6 is folded and connected to the lower side of the bottom plate 1, and the lower side of the second side plate 6 is folded and connected to the first inner side plate 7.

[0037] Specifically, the second side plate 6 is connected to the bottom plate 1 through the third fold line, and the first inner side plate 7 is connected to the second side plate 6 through the fourth fold line. When folding, the second side plate 6 is folded along the third fold line to be perpendicular to the bottom plate 1, the first inner side plate 7 is folded along the fourth fold line towards the direction close to the second side plate 6, and the side of the first inner side plate 7 close to the bottom plate 1 is pressed tightly against the bottom plate 1.

[0038] In this embodiment, the third folding part includes a third side plate 8, a first connecting plate 9, a second inner side plate 10, a second flap 11, and a fourth flap 12. The right side of the third side plate 8 is folded and connected to the left side of the bottom plate 1. The left side of the third side plate 8 is folded and connected to the right side of the second inner side plate 10 through the first connecting plate 9. The lower side of the third side plate 8 is folded and connected to the second flap 11. A first slot 1001 is provided on the second inner side plate 10. The fourth flap 12 is folded and connected to the left side of the second inner side plate 10.

[0039] Specifically, the third side panel 8 is connected to the bottom plate 1 via the fifth fold line, the first connecting plate 9 is connected to the third side panel 8 via the sixth fold line, the second inner side panel 10 is connected to the first connecting plate 9 via the seventh fold line, and the fourth flap 12 is connected to the second inner side panel 10 via the eighth fold line. When folding, the third side panel 8 is folded along the fifth fold line to be perpendicular to the bottom plate 1, the first connecting plate 9 is folded along the sixth fold line to be perpendicular to the third side panel 8, the second inner side panel 10 is folded along the seventh fold line to be parallel to the third side panel 8, and the fourth flap 12 is folded along the eighth fold line towards the third side panel 8 and pressed tightly against the bottom plate 1.

[0040] In this embodiment, the fourth folding part includes a fourth side plate 13, a second connecting plate 14, a third inner side plate 15, a third flap 16, and a fifth flap 17. The left side of the fourth side plate 13 is folded and connected to the right side of the bottom plate 1. The right side of the fourth side plate 13 is folded and connected to the left side of the third inner side plate 15 through the second connecting plate 14. The lower side of the fourth side plate 13 is folded and connected to the third flap 16. A second slot 1501 is provided on the third inner side plate 15. The fifth flap 17 is folded and connected to the right side of the third inner side plate 15.

[0041] Specifically, the fourth side panel 13 is connected to the base plate 1 via the ninth fold line, the second connecting plate 14 is connected to the fourth side panel 13 via the tenth fold line, the third inner side panel 15 is connected to the second connecting plate 14 via the eleventh fold line, and the fifth flap 17 is connected to the third inner side panel 15 via the twelfth fold line. When folding, the fourth side panel 13 is folded along the ninth fold line to be perpendicular to the base plate 1, the second connecting plate 14 is folded along the tenth fold line to be perpendicular to the fourth side panel 13, the third inner side panel 15 is folded along the eleventh fold line to be parallel to the fourth side panel 13, and the fifth flap 17 is folded along the twelfth fold line towards the fourth side panel 13 and pressed tightly against the base plate 1.

[0042] Furthermore, after folding the first, second, third, and fourth folds towards the bottom plate 1, the two first flaps 5 are respectively inserted between the third side plate 8 and the second inner side plate 10, and between the fourth side plate 13 and the third inner side plate 15. The second flaps 11 and the third flaps 16 are both inserted between the second side plate 6 and the first inner side plate 7. Through the locking between the flaps, the overall structural support is improved, and the stable connection of the overall structure is achieved. At the same time, the tongue 4 can be inserted between the top plate 3 and the first inner side plate 7, thereby completing the folding of the cardboard into packaging for dinner plates. The process of the box body is as follows: the bottom plate 1 serves as the bottom surface of the packaging box body, which is located below the plate during use; the first side plate 2, the second side plate 6, the third side plate 8, and the fourth side plate 13 serve as the four outer walls of the packaging box body, which are located around the plate during use; the top plate 3 serves as the top surface of the packaging box body, which is located above the plate during use; and the second inner side plate 10 and the third inner side plate 15 serve as the two symmetrical inner walls of the packaging box body. During use, the plate is fixed by engaging with the two sides of the plate through the first slot 1001 on the second inner side plate 10 and the second slot 1501 on the third inner side plate 15, respectively.

[0043] In this embodiment, the upper sides of the third side plate 8, the first connecting plate 9, the second inner side plate 10, and the fourth flap 12 are all flush. The lower sides of the first connecting plate 9, the second inner side plate 10, and the fourth flap 12 are all flush and located above the lower side of the third side plate 8. The upper sides of the fourth side plate 13, the second connecting plate 14, the third inner side plate 15, and the fifth flap 17 are all flush. The lower sides of the second connecting plate 14, the third inner side plate 15, and the fifth flap 17 are all flush and located above the lower side of the fourth side plate 13. This ensures that the first inner side plate 7 can cooperate with the plates on the left and right sides during the folding process to form the packaging box body.

[0044] by Figure 1 The left and right directions in the diagram are the X-direction, with... Figure 1 The vertical direction is defined as the Y-direction. The dimensions of each component in this embodiment are described as follows:

[0045] In the X direction, the lengths of the base plate 1, the first side plate 2, and the second side plate 6 are all 232 mm; the length of the first inner side plate 7 is 224 mm; the length of the top plate 3 is 236 mm; the length of the tongue 4 is 228 mm; the length of the third side plate 8 is 59 mm; the length of the first connecting plate 9 is 20 mm; the length of the second inner side plate 10 is 55.58 mm; the length of the fourth flap 12 is 26 mm; the length of the second flap 11 is 51 mm; the length of the fourth side plate 13 is 59 mm; the length of the second connecting plate 14 is 20 mm; the length of the third inner side plate 15 is 55.58 mm; the length of the fifth flap 17 is 26 mm; and the length of the third flap 16 is 51 mm.

[0046] In the Y direction, the length of the first side plate 2 is 59mm; the length of the first flap 5 is 48mm; the length of the third side plate 8 is 232mm; the lengths of the first connecting plate 9, the second inner side plate 10, and the fourth flap 12 are all 189mm; the length of the first slot 1001 is 128mm on the side closer to the first connecting plate 9 and 112mm on the side farther from the first connecting plate 9; the length of the fourth side plate 13 is 232mm; the lengths of the second connecting plate 14, the third inner side plate 15, and the fifth flap 17 are all 189mm; the length of the second slot 1501 is 128mm on the side closer to the second connecting plate 14 and 112mm on the side farther from the second connecting plate 14.

[0047] The dimensions described above in this embodiment ensure the proper fit between the components during the folding and turning of the cardboard into a box. However, the dimensions are not limited to the above-described dimensions. Those skilled in the art can make adaptive modifications to the dimensions based on the actual size of the plate to be packaged to meet the usage requirements.

[0048] The dinner tray packaging box provided in this embodiment has the following advantages:

[0049] First, it saves materials and costs: The one-piece molded tray-type folding cardboard box uses a single-sheet molding design, which maximizes the use of cardboard materials and reduces waste. This design not only conforms to environmental protection principles but also reduces production costs.

[0050] Secondly, it facilitates storage, transportation, and logistics: During transportation, the one-piece molded tray-type folding cardboard box can be pressed into a flat surface according to the preset folding lines, thereby greatly reducing the space occupied and lowering logistics costs. This feature gives it a significant advantage in long-distance transportation and large-scale storage. Furthermore, it facilitates automated processing; its structural design makes the handling of cardboard boxes on automated production lines simpler, such as automatic folding and packaging, thus improving overall logistics efficiency.

[0051] Third, environmental protection and sustainability: One-piece molded tray-folding cardboard boxes are typically made from recyclable and renewable cardboard materials, meeting environmental protection requirements. After disposal, these boxes can be easily recycled, reducing environmental impact. Due to their compact structure and high material utilization rate, they reduce waste generation compared to traditional cardboard boxes, thereby lowering environmental pollution.

[0052] In summary, the plate packaging box provided in this embodiment adopts a one-piece molding design, which is environmentally friendly and has good cushioning performance. It uses the support points of each corrugated cardboard to support and suspend the plate, dispersing and absorbing external pressure, so that the plate is fixed in place inside the plate packaging box, effectively preventing impact and vibration during transportation. It has good protective performance for the plate. In addition, the regular shape of the plate packaging box makes it easy to stack. Its material is corrugated cardboard, which is moderately priced, safe and environmentally friendly.

[0053] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A dinner plate packaging box, characterized in that: The invention includes a folded cardboard, which comprises a base plate, a first fold, a second fold, a third fold, and a fourth fold. The base plate is a square plate, and the first fold, the second fold, the third fold, and the fourth fold are respectively disposed on the upper side, the lower side, the left side, and the right side of the base plate. The first folding part includes a first side plate, a top plate, a latch, and a first flap. The lower side of the first side plate is folded and connected to the upper side of the bottom plate, the upper side of the first side plate is folded and connected to the lower side of the top plate, and the upper side of the top plate is folded and connected to the latch. There are two first flaps, and the two first flaps are folded and connected to the left side and right side of the first side plate, respectively. The second folding part includes a second side plate and a first inner side plate. The upper side of the second side plate is folded and connected to the lower side of the bottom plate, and the lower side of the second side plate is folded and connected to the first inner side plate. The third folding part includes a third side plate, a first connecting plate, a second inner side plate, and a second flap. The right side of the third side plate is folded and connected to the left side of the bottom plate. The left side of the third side plate is folded and connected to the right side of the second inner side plate through the first connecting plate. The lower side of the third side plate is folded and connected to the second flap. A first slot is provided on the second inner side plate. The fourth folding part includes a fourth side plate, a second connecting plate, a third inner side plate, and a third flap. The left side of the fourth side plate is folded and connected to the right side of the bottom plate. The right side of the fourth side plate is folded and connected to the left side of the third inner side plate through the second connecting plate. The lower side of the fourth side plate is folded and connected to the third flap. A second slot is provided on the third inner side plate. The first folding part, the second folding part, the third folding part, and the fourth folding part can all be folded towards the bottom plate, and the two first flaps can be inserted between the third side plate and the second inner side plate and between the fourth side plate and the third inner side plate, respectively. The second flap and the third flap can both be inserted between the second side plate and the first inner side plate. The tongue can be inserted between the top plate and the first inner side plate to form the packaging box body. The packaging box body can accommodate a plate, and the first slot and the second slot can respectively engage with the two sides of the plate.

2. The dinner tray packaging box according to claim 1, characterized in that: The first side plate is connected to the bottom plate via a first fold line, and the top plate is connected to the first side plate via a second fold line; the first side plate can be folded along the first fold line to be perpendicular to the bottom plate, and the top plate can be folded along the second fold line to be parallel to the bottom plate and located above the bottom plate.

3. The dinner tray packaging box according to claim 1, characterized in that: The second side plate is connected to the bottom plate via a third fold line, and the first inner side plate is connected to the second side plate via a fourth fold line; the second side plate can be folded along the third fold line to be perpendicular to the bottom plate, and the first inner side plate can be folded along the fourth fold line towards the second side plate, and the side of the first inner side plate closest to the bottom plate can be tightly attached to the bottom plate.

4. The dinner tray packaging box according to claim 1, characterized in that: The third fold also includes a fourth flap, which is folded and connected to the left side of the second inner side plate; when the third fold is folded toward the bottom plate to form the left side of the packaging box body, the fourth flap can be tightly attached to the bottom plate.

5. The dinner tray packaging box according to claim 4, characterized in that: The third side panel is connected to the bottom plate via a fifth fold line, the first connecting plate is connected to the third side panel via a sixth fold line, the second inner side panel is connected to the first connecting plate via a seventh fold line, and the fourth flap is connected to the second inner side panel via an eighth fold line. The third side panel can be folded along the fifth fold line to be perpendicular to the bottom plate, and the first connecting plate can be folded along the sixth fold line to be perpendicular to the third side panel. The second inner side panel can be folded along the seventh fold line to be parallel to the third side panel, and the fourth flap can be folded along the eighth fold line towards the third side panel and pressed tightly against the bottom plate.

6. The dinner tray packaging box according to claim 4, characterized in that: The upper sides of the third side plate, the first connecting plate, the second inner side plate, and the fourth flap are all flush. The lower sides of the first connecting plate, the second inner side plate, and the fourth flap are all flush and located above the lower side of the third side plate.

7. The dinner tray packaging box according to claim 1, characterized in that: The fourth fold also includes a fifth flap, which is folded and connected to the right side of the third inner side plate; when the fourth fold is folded toward the bottom plate to form the right side of the packaging box body, the fifth flap can be tightly attached to the bottom plate.

8. The dinner tray packaging box according to claim 7, characterized in that: The fourth side panel is connected to the base plate via the ninth fold line, the second connecting plate is connected to the fourth side panel via the tenth fold line, the third inner side panel is connected to the second connecting plate via the eleventh fold line, and the fifth flap is connected to the third inner side panel via the twelfth fold line. The fourth side panel can be folded along the ninth fold line to be perpendicular to the base plate, the second connecting plate can be folded along the tenth fold line to be perpendicular to the fourth side panel, the third inner side panel can be folded along the eleventh fold line to be parallel to the fourth side panel, and the fifth flap can be folded along the twelfth fold line towards the fourth side panel and pressed tightly against the base plate.

9. The dinner tray packaging box according to claim 7, characterized in that: The upper sides of the fourth side plate, the second connecting plate, the third inner side plate, and the fifth flap are all flush. The lower sides of the second connecting plate, the third inner side plate, and the fifth flap are all flush and located above the lower side of the fourth side plate.

10. The dinner tray packaging box according to any one of claims 1-9, characterized in that: The folded cardboard is corrugated cardboard.

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