High strength food carton with antibacterial layer
Patent Information
- Application Number
- CN202522155901.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-11
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-10-11
AI Technical Summary
现有技术中，也有采用侧面向上折叠形成盒子的方案，但是侧面接缝处折叠形成的三角形结构弯折后粘贴在左右两侧，这种方式减少了接缝的数量，但是在角落部位承受的剪切力较大，在使用时，侧面承受的力量较大时，容易在接缝处发生撕裂，实际强度仍然较低
Smart Images
Figure CN224690662U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of food packaging technology, specifically to a high-strength food paper box with an antibacterial layer. Background Technology
[0002] Food cartons are paper containers used for packaging, storing, or transporting food. They are generally made of cardboard, paperboard, or other paper materials that meet food hygiene standards.
[0003] Currently, most food cartons on the market are made by folding and gluing cardboard sides together, with the bottom typically consisting of four pieces of cardboard joined together. This results in numerous seams and relatively low load-bearing capacity. Existing technology also employs a method of folding the sides upwards to form the box. However, the triangular structure formed by folding at the side seams is then bent and glued to the left and right sides. While this method reduces the number of seams, it exposes the corners to greater shear forces. During use, when the sides are subjected to significant forces, tearing can easily occur at the seams, and the actual strength remains relatively low. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a high-strength food paper box with an antibacterial layer.
[0005] The technical solution of this utility model is:
[0006] A high-strength food carton with an antibacterial layer, comprising:
[0007] Base plate, first side plate and second side plate connected to the base plate;
[0008] The ends of the first side plate and the second side plate are connected by a corner reinforcement plate. After being folded, the corner reinforcement plate wraps around the inner and outer sides and the top surface of the side joint of the first side plate and the second side plate.
[0009] The first side panel is provided with a rear cover plate and a rear cover plate at the top, and the second side panel is connected with a side cover plate at the top. The rear cover plate, the rear cover plate and the side cover plate are interlocked to form a top cover.
[0010] The inner surface of the cardboard box is coated with an antibacterial film.
[0011] Preferably, the corner reinforcing plate is composed of a first bending plate, a seam wrapping plate, and an inward-folding fixing plate, and is square when unfolded.
[0012] Preferably, the first bending plate is connected to the first side plate and the second side plate respectively. The first bending plate is a right triangle with one angle of 22.5°. The first bending plate is bent outward and glued and fixed to the first side plate and the second side plate respectively.
[0013] Preferably, the seam wrapping plate is an isosceles right triangle with a vertices of 45 degrees, the angle bisector of the vertices being the diagonal of the corner reinforcement plate, and the seam wrapping plate is located between the two first bending plates, and is glued and fixed to the inner side of the first bending plates when folded.
[0014] Preferably, the inward-folding fixing plate is connected to the bottom edge of the seam wrapping plate and is an isosceles right triangle with a vertices angle of 90°. The inward-folding fixing plate is folded inward and simultaneously glued and fixed to the first side plate and the second side plate.
[0015] Preferably, a first slot is provided at the middle of the bottom of the rear cover and the front cover, a second slot is provided on both sides of the first slot of the front cover, and a first locking block is provided on the top of both sides of the side cover. When the side cover is folded inward, the first locking block can be inserted into the first slot.
[0016] Preferably, the side cover plate has a third slot in the middle of its bottom, and the rear cover plate has an insert plate on its edge. When the rear cover plate is folded inward to a horizontal position, the insert plate can be inserted into the second and third slots.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] This invention utilizes a single sheet of cardboard to reduce the number of seams and increase the load-bearing capacity of the base plate. By setting corner reinforcement plates and using seam wrapping plates to seal the seams of the first and second side plates, along with inward-folding fixing plates, the first and second side plates are simultaneously fixed, enhancing the strength of the corners and preventing tearing. The cooperation of the first locking block and the first slot improves the pressure resistance of the lid. The front and rear cover plates seal the seams of the side cover plates, reducing the intrusion of external bacteria. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the top cover structure of this utility model when opened;
[0021] Figure 3 This is a schematic diagram of the side cover structure of this utility model when opened;
[0022] Figure 4 This is a schematic diagram of the overall structure of this utility model.
[0023] The meanings of the labels in the diagram are as follows:
[0024] 1. Base plate; 2. First side plate; 3. Second side plate; 4. Corner reinforcing plate; 41. First bending plate; 42. Joint wrapping plate; 43. Inward-folding fixing plate; 5. Rear cover plate; 6. Insert plate; 7. Front cover plate; 8. First slot; 9. Second slot; 10. Side cover plate; 11. First locking block; 12. Third slot. Detailed Implementation
[0025] 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.
[0026] Example 1:
[0027] Please see Figure 1-4 The present invention will describe the above technical solution in detail through the following embodiments:
[0028] A high-strength food carton with an antibacterial layer, comprising:
[0029] Base plate 1, first side plate 2 and second side plate 3 connected to base plate 1.
[0030] The first side plate 2 is located on the front and rear sides of the base plate 1, and the second side plate 3 is located on the left and right sides of the first side plate 2.
[0031] The ends of the first side plate 2 and the second side plate 3 are connected by a corner reinforcing plate 4. After being folded, the corner reinforcing plate 4 wraps around the inner and outer sides and the top surface of the side joint of the first side plate 2 and the second side plate 3.
[0032] The corner reinforcement plate 4 is composed of a first bending plate 41, a seam wrapping plate 42, and an inward-folding fixing plate 43, and is square when unfolded.
[0033] The first bending plate 41 is connected to the first side plate 2 and the second side plate 3 respectively. The first bending plate 41 is a right triangle with one angle of 22.5°. The first bending plate 41 is bent outward and glued and fixed to the first side plate 2 and the second side plate 3 respectively.
[0034] The seam wrapping plate 42 is an isosceles right triangle with a vertex angle of 45 degrees. The angle bisector of the vertex angle is the diagonal of the corner reinforcement plate 4. The seam wrapping plate 42 is located between the two first bending plates 41 and is glued and fixed to the inner side of the first bending plate 41 when folded.
[0035] The inward-folding fixing plate 43 is connected to the bottom edge of the seam wrapping plate 42, forming an isosceles right triangle with a vertices angle of 90°. The inward-folding fixing plate 43 is folded inward and simultaneously glued and fixed to the first side plate 2 and the second side plate 3.
[0036] The top of the first side plate 2 is provided with a rear cover plate 5 and a side cover plate 10. The top of the second side plate 3 is connected to the side cover plate 10. The rear cover plate 5, the rear cover plate 5 and the side cover plate 10 are interlocked to form a top cover.
[0037] The rear cover 5 and the front cover 7 are provided with a first slot 8 at the bottom middle position. The front cover 7 is provided with a second slot 9 on both sides of the first slot 8. The side cover 10 is provided with a first locking block 11 on the top of both sides. When the side cover 10 is folded inward, the first locking block 11 can be inserted into the first slot 8.
[0038] The side cover 10 has a third slot 12 in the middle of its bottom, and the rear cover 5 has an insert plate 6 on its edge. When the rear cover 5 is folded inward to a horizontal position, the insert plate 6 can be inserted into the second slot 9 and the third slot 12.
[0039] The inner surface of the cardboard box is coated with an antibacterial film.
[0040] The antibacterial coating can be made of nano zinc oxide material.
[0041] Working principle:
[0042] When folded:
[0043] First, apply glue to the upward-facing side of the corner reinforcement plate 4.
[0044] Fold the first side plate 2 and the second side plate 3 upwards by 90° to make them vertical, and fold the first bending plate 41 to both sides by 90°.
[0045] At this time, the seam wrapping plate 42 is tightly attached to the first bending plate 41.
[0046] Apply glue to the outer side of the first bending plate 41.
[0047] The inward-folding fixing plate 43 is folded inward at an angle of 180°, and the first bending plate 41 and the seam wrapping plate 42 are folded inward toward the first side plate 2 and the second side plate 3 at an angle of 45°.
[0048] At this time, the two first bending plates 41 are respectively pasted and fixed to the first side plate 2 and the second side plate 3, while the inward fixing plate 43 is simultaneously pasted and fixed to both sides of the inner joint of the first side plate 2 and the second side plate 3.
[0049] At this point, the base plate 1, the first side plate 2, and the second side plate 3 form a complete box.
[0050] Food can be placed inside the box.
[0051] Put the lid on:
[0052] First, fold the side cover plate 10 inward at a 90° angle, and then insert the first card block 11 into the first slot 8.
[0053] Then fold the front cover 7 inward until it covers the side cover 10, then fold the rear cover 5 inward and insert the insert plate 6 into the second slot 9 and the third slot 12. At this time, the seam between the side covers 10 is covered by the rear cover 5.
[0054] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A high-strength food paper box with an antibacterial layer, characterized in that, include: Base plate (1), first side plate (2) and second side plate (3) connected to base plate (1); The ends of the first side plate (2) and the second side plate (3) are connected by a corner reinforcing plate (4). The corner reinforcing plate (4) is folded and wraps around the inner and outer sides and the top surface of the side seam of the first side plate (2) and the second side plate (3). The top of the first side plate (2) is connected to the rear cover plate (5) and the rear cover plate (5), and the top of the second side plate (3) is connected to the side cover plate (10). The rear cover plate (5), the rear cover plate (5) and the side cover plate (10) are interlocked to form a top cover. The inner surface of the cardboard box is coated with an antibacterial film.
2. A high-strength food paper box with an antibacterial layer as described in claim 1, characterized in that: The corner reinforcement plate (4) is composed of a first bending plate (41), a seam wrapping plate (42) and an inward fixing plate (43), and is square when unfolded.
3. A high-strength food paper box with an antibacterial layer as described in claim 2, characterized in that: The first bending plate (41) is connected to the first side plate (2) and the second side plate (3) respectively. The first bending plate (41) is a right triangle with one angle of 22.5°. The first bending plate (41) is bent outward and glued and fixed to the first side plate (2) and the second side plate (3) respectively.
4. A high-strength food paper box with an antibacterial layer as described in claim 3, characterized in that: The seam wrapping plate (42) is an isosceles right triangle with a vertex angle of 45 degrees. The angle bisector of the vertex angle is the diagonal of the corner reinforcement plate (4). The seam wrapping plate (42) is located between the two first bending plates (41) and is glued and fixed to the inner side of the first bending plate (41) when folded.
5. A high-strength food paper box with an antibacterial layer as described in claim 4, characterized in that: The inward-folding fixing plate (43) is connected to the bottom edge of the seam wrapping plate (42) and is an isosceles right triangle with a vertices angle of 90°. The inward-folding fixing plate (43) is folded inward and simultaneously glued and fixed to the first side plate (2) and the second side plate (3).
6. A high-strength food paper box with an antibacterial layer as described in claim 1, characterized in that: The rear cover plate (5) and the front cover plate (7) are provided with a first slot (8) at the middle of the bottom. The first slot (8) of the front cover plate (7) is provided with a second slot (9) on both sides. The top of both sides of the side cover plate (10) is provided with a first locking block (11). When the side cover plate (10) is folded inward, the first locking block (11) can be inserted into the first slot (8).
7. A high-strength food paper box with an antibacterial layer as described in claim 6, characterized in that: The side cover plate (10) has a third slot (12) in the middle of its bottom, and the rear cover plate (5) has an insert plate (6) on its edge. When the rear cover plate (5) is folded inward to a horizontal position, the insert plate (6) can be inserted into the second slot (9) and the third slot (12).