Food carton with light high-strength structure

Abstract

The utility model relates to the technical field of food packaging, in particular to a food carton with a light high-strength structure, which comprises a carton body, a reinforcing sheet is arranged in the carton body, the reinforcing sheet is axially arranged at the corner of the long edge of the carton body, and the reinforcing sheet is made of degradable materials. The reinforcing pieces are arranged, the anti-bending pieces are used for supporting the inner sides of the long edges of the paper box, the anti-bending capacity of the long edges of the paper box is improved, and the strength of the paper box is improved; the supporting pieces are bent towards the center of the paper box and abut against the face perpendicular to the long axis, so that the anti-pressure capacity of the paper box in the long axis direction can be improved, and the strength of the paper box is improved; the reinforcing pieces are only arranged at the positions prone to deformation, the thickness is increased compared with the whole, the weight and materials can be saved, and meanwhile folding is not affected.

Description

Technical Field

[0001] This utility model relates to the field of food packaging technology, specifically to a lightweight and high-strength food paper box. Background Technology

[0002] Food paper boxes are packaging containers made of paper-based materials (such as cardboard, corrugated paper, and whiteboard paper), mainly used for holding food, such as fast food, pastries, takeout, and snacks. They are characterized by being lightweight, printable, easy to process, and environmentally friendly. Depending on their use, food paper boxes can be divided into: disposable lunch boxes, retail packaging boxes, and frozen food boxes.

[0003] Currently, commercially available food boxes generally use a single-layer corrugated paper or cardboard structure. Cardboard is lightweight and easy to fold, but it lacks compressive strength and is prone to dents. Using corrugated paper can improve the compressive strength of the box, but it will also increase the weight and material consumption. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a food paper box with a lightweight and high-strength structure.

[0005] The technical solution of this utility model is:

[0006] A lightweight, high-strength food carton, comprising:

[0007] A cardboard box, wherein a reinforcing sheet is provided inside the cardboard box, the reinforcing sheet being axially positioned at the corner of the long side of the cardboard box, and the reinforcing sheet being made of a biodegradable material.

[0008] Preferably, the cardboard box includes four side panels and two lids, the side panels and lids being cut from the same piece of cardboard, and one side of the lid being connected to the side panel and the connection point being bendable.

[0009] Preferably, the side panels form a hollow quadrangular prism, and the box lid is located at both ends of the quadrangular prism.

[0010] Preferably, the lid has inserts on the three remaining sides of the side facing the prism that are not connected to the side panel. After the inserts are inserted into the inside of the side panel, the lid and the side panel form a hollow cube.

[0011] Preferably, the reinforcing piece includes two fixing pieces, which are respectively fixed on two adjacent faces of the inner long side of the cube.

[0012] Preferably, the heads of the fixing plates are connected by a bending portion to a support plate, and two support plates on the same side are connected by a bending portion. The support plate can be bent towards the center of the cube, and the end face of the support plate abuts against the surface perpendicular to the long side.

[0013] Preferably, the fixing plates are connected by a bending portion in the middle of the fixing plates, and the two bending plates are connected by a bending portion. The bending plates are fixed on two adjacent surfaces with long sides, and a split groove is provided between the end face of the bending plate and the supporting plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention improves the bending resistance of the long side of the cardboard box and increases its strength by setting reinforcing plates and using anti-bending plates to support the inner side of the long side. By bending the support plates towards the center of the cardboard box and using the support plates to support the surface perpendicular to the long axis, the compressive strength of the cardboard box along the long axis can be improved, thus increasing the strength of the cardboard box. By setting reinforcing plates only in easily deformable positions, compared to increasing the overall thickness, it can save weight and materials, and does not affect folding. Attached Figure Description

[0016] Figure 1 This is a first schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the first structure of the paper box in this utility model;

[0018] Figure 3 This is a schematic diagram of the second structure of the paper box in this utility model;

[0019] Figure 4 This is a first schematic diagram of the reinforcing sheet structure in this utility model;

[0020] Figure 5 This is a second schematic diagram of the reinforcing sheet structure in this utility model.

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Cardboard box; 11. Side panel; 12. Box lid; 13. Insert; 14. Slot;

[0023] 2. Reinforcing plate; 21. Fixing plate; 22. Supporting plate; 23. Bending plate; 24. Bending section; 25. Splitting groove. Detailed Implementation

[0024] 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.

[0025] Example 1:

[0026] Please see Figure 1-5 The present invention will describe the above technical solution in detail through the following embodiments:

[0027] A lightweight, high-strength food carton, comprising:

[0028] Paper box 1, with a reinforcing piece 2 inside the paper box 1. The reinforcing piece 2 is axially positioned at the corner of the long side of the paper box 1 and is made of biodegradable material.

[0029] Reinforcement plate 2 is made of biodegradable plastic, which complies with environmental protection standards.

[0030] The cardboard box 1 includes four side panels 11 and two lids 12. The side panels 11 and the lids 12 are cut from the same piece of cardboard. One side of the lid 12 is connected to the side panel 11 and the connection can be bent.

[0031] The paper box 1 is made of known food-grade paper; in this embodiment, cardboard is used as the raw material for the paper box 1. The surface needs to be waterproofed.

[0032] The side panels 11 form a hollow quadrangular prism, and the lid 12 is located at both ends of the quadrangular prism.

[0033] There are two scenarios: one is that the lid 12 is parallel to the long side of the hollow quadrangular prism, and the other is that the lid 12 is perpendicular to the long side of the hollow quadrangular prism.

[0034] When the lid 12 is parallel to the long side of the hollow quadrangular prism, the long side of the cardboard box 1 is mainly subjected to radial pressure; when the lid 12 is perpendicular to the long side of the hollow quadrangular prism, the long side of the cardboard box 1 is mainly subjected to axial pressure.

[0035] The lid 12 has three remaining edges on the side facing the quadrangular prism that are not connected to the side plate 11, and inserts 13 are provided on these edges. After the inserts 13 are inserted into the inside of the side plate 11, the lid 12 and the side plate 11 form a hollow cube.

[0036] The insert 13 is perpendicular to the lid 12 and is used to improve the bending resistance of the edge of the lid 12.

[0037] It should be noted that after the insert 13 is inserted into the side panel 11, the side panel 11 and the cover 12 need to be fixed with tape or other adhesives.

[0038] The reinforcing piece 2 includes two fixing pieces 21, which are fixed to two adjacent faces of the inner long side of the cube.

[0039] The fixing piece 21 is attached to two adjacent sides of the long side by adhesive.

[0040] When the lid 12 is parallel to the long side of the hollow quadrangular prism, the reinforcing piece 2 is located at the connection between the lid 12 and the side plate 11, as well as at the connection between the lid 12 and the insert piece 13.

[0041] When the lid 12 is perpendicular to the long side of the hollow quadrangular prism, the reinforcing piece 2 is located inside the connection between two adjacent side plates 11.

[0042] The heads of the fixed pieces 21 are connected by a bending part 24 to the support pieces 22. The two support pieces 22 on the same side are connected by a bending part 24. The support pieces 22 can be bent towards the center of the cube. The end face of the support piece 22 abuts against the face perpendicular to the long side.

[0043] When the lid 12 is parallel to the long side of the hollow quadrangular prism, the support piece 22 abuts against the shorter side plate 11 or the shorter insert 13. This prevents the shorter side plate 11 from being recessed inward.

[0044] When the lid 12 is perpendicular to the long side of the hollow quadrangular prism, the support piece 22 abuts against the inner side of the lid 12, which can prevent the lid 12 from being recessed inward or rotated excessively.

[0045] A bending-resistant piece 23 is connected between the fixing pieces 21 through a bending portion 24. The two bending-resistant pieces 23 are connected through the bending portion 24. The bending-resistant pieces 23 are fixed to two adjacent surfaces of the long side by adhesive. A separation groove 25 is provided between the end face of the bending-resistant piece 23 and the support piece 22.

[0046] The dividing groove 25 facilitates the bending of the support piece 22 towards the center of the cube.

[0047] When the lid 12 is parallel to the long side of the hollow quadrangular prism, as the lid 12 rotates towards the hollow quadrangular prism, the reinforcing piece 2 at the connection between the lid 12 and the side plate 11 bends, and the support piece 22 bends towards the center of the cube until the two support pieces 22 are perpendicular. At the same time, the two anti-bending pieces 23 also bend at 90°. At this point, the edges of the two anti-bending pieces 23 abut against each other, which can prevent the lid 12 from continuing to rotate. In addition, the abutting edges of the two anti-bending pieces 23 can improve the bending resistance of the anti-bending pieces 23, thereby improving the compressive strength of the long side of the cardboard box 1.

[0048] When the lid 12 is perpendicular to the long side of the hollow quadrangular prism, the two anti-bending pieces 23 of the same reinforcing piece 2 always maintain an edge-to-edge state, naturally possessing anti-bending ability, thus being able to withstand higher pressure without bending, thereby improving the axial compression resistance of the paper box 1.

[0049] When the lid 12 is perpendicular to the long side of the hollow quadrangular prism, several slots 14 need to be provided on the insert 13. When the lid 12 covers the end face of the side plate 11, the support piece 22 is inserted into the slot 14 so that the insert 13 will not be blocked by the support piece 22 when it is inserted into the inside of the side plate 11.

[0050] Working principle:

[0051] The side panel 11 is formed into a hollow quadrangular prism and fixed with adhesive to prevent loosening.

[0052] Rotate the lower cover 12 to a horizontal position to cover the end face of the side panel 11, and insert the insert 13 into the inside of the side panel 11. Use adhesive to fix the lower insert 13 to the side panel 11.

[0053] Use adhesive to attach the fixing piece 21 to two adjacent sides of the long side.

[0054] When the lid 12 is parallel to the long side of the hollow quadrangular prism:

[0055] The reinforcing piece 2 is located at the connection between the lid 12 and the side plate 11, and also at the long side of the connection between the lid 12 and the insert piece 13.

[0056] The support piece 22 abuts against the shorter side plate 11 or the shorter insert piece 13. This prevents the shorter side plate 11 from being recessed inward.

[0057] When the top lid 12 rotates towards the hollow quadrangular prism, the reinforcing piece 2 at the connection between the lid 12 and the side plate 11 bends, and the support piece 22 bends towards the center of the cube until the two support pieces 22 are perpendicular. At the same time, the two anti-bending pieces 23 also bend at 90°. At this point, the edges of the two anti-bending pieces 23 abut against each other, which can prevent the lid 12 from continuing to rotate. In addition, the abutting edges of the two anti-bending pieces 23 can improve the bending resistance of the anti-bending pieces 23, thereby improving the compressive strength of the long side of the cardboard box 1.

[0058] When the lid 12 is perpendicular to the long side of the hollow quadrangular prism, the two anti-bending pieces 23 of the same reinforcing piece 2 always maintain an edge-to-edge state, naturally possessing anti-bending ability, thus being able to withstand higher pressure without bending. At the same time, the support piece 22 abuts against the inner side of the lid 12, which can prevent the lid 12 from being recessed inward or rotated excessively, thereby improving the axial compression resistance of the paper box 1.

[0059] 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 lightweight, high-strength food paper box, characterized in that, include: A cardboard box (1) is provided inside the cardboard box (1). The reinforcing sheet (2) is axially arranged at the corner of the long side of the cardboard box (1). The reinforcing sheet (2) is made of biodegradable material.

2. The lightweight, high-strength food paper box as described in claim 1, characterized in that: The cardboard box (1) includes four side panels (11) and two lids (12). The side panels (11) and lids (12) are cut from the same piece of cardboard. One side of the lid (12) is connected to the side panel (11) and the connection can be bent.

3. A lightweight, high-strength food carton as described in claim 2, characterized in that: The side panels (11) form a hollow quadrangular prism, and the lid (12) is located at both ends of the quadrangular prism.

4. A lightweight, high-strength food carton as described in claim 3, characterized in that: The lid (12) has three remaining edges on the side facing the quadrangular prism that are not connected to the side plate (11) with inserts (13). After the inserts (13) are inserted into the inside of the side plate (11), the lid (12) and the side plate (11) form a hollow cube.

5. A lightweight, high-strength food carton as described in claim 4, characterized in that: The reinforcing piece (2) includes two fixing pieces (21), which are respectively fixed on two adjacent faces of the inner long side of the cube.

6. A lightweight, high-strength food carton as described in claim 5, characterized in that: The heads of the fixing pieces (21) are connected to the supporting pieces (22) by bending portions (24). The two supporting pieces (22) on the same side are connected by bending portions (24). The supporting pieces (22) can be bent towards the center of the cube. The end face of the supporting piece (22) abuts against the face perpendicular to the long side.

7. A lightweight, high-strength food paper box as described in claim 6, characterized in that: A bending-resistant plate (23) is connected between the fixing plates (21) through a bending part (24). The two bending-resistant plates (23) are connected through the bending part (24). The bending-resistant plates (23) are fixed on two adjacent surfaces with long sides. A split groove (25) is provided between the end face of the bending-resistant plate (23) and the support plate (22).

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