A waterproof packaging cardboard box

Abstract

This utility model relates to the field of cardboard box technology and discloses a waterproof packaging cardboard box, including a bottom plate, which is rectangular in structure and serves as the load-bearing foundation of the cardboard box; a first side plate and a second side plate, which are symmetrically arranged around the bottom plate; a horizontal fold line, which is set between the first and second side plates to realize the sealing fold operation of the first and second side plates; and a diagonal fold line, which is set at the connection point of adjacent first and second side plates. The connecting angle of adjacent first side plates, second side plates and bottom plate is folded through the diagonal fold line to form a triangular fold plate. In this utility model, by using two vertical fold lines and one diagonal fold line to fold the connecting angle of two side plates and bottom plate to form a triangular fold plate, and then bending the triangular fold plate again along the vertical fold line to fit against the corresponding side plate, the water leakage from the corner is prevented, thus enhancing the waterproofness of the corners of the cardboard box.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box technology, and in particular to a packaging cardboard box with good waterproof performance. Background Technology

[0002] In the field of product packaging, with the promotion of green and environmentally friendly concepts, paper packaging is becoming increasingly important in the process of replacing plastic packaging due to its advantages such as recyclability and low pollution. For scenarios involving the transportation of refrigerated goods (such as food and medicine), packaging cartons need to be waterproof to prevent moisture from melting ice packs from penetrating and damaging the cartons and affecting the storage of goods. Designing waterproof packaging cartons can not only meet environmental protection requirements but also ensure the packaging effect of goods in complex environments such as humidity and refrigeration, reduce the loss of goods due to damage to cartons, and improve the reliability and practicality of packaging. This is of great significance for cold chain transportation and product protection in industries such as food and medicine.

[0003] The current industry categorizes product packaging into two types: plastic packaging and paper packaging. However, with the development of the industry, the requirements for green, environmentally friendly, and recyclable materials are becoming increasingly stringent, leading to the growing popularity of paper packaging. The main issue facing the industry today is how to replace packaging materials while still fulfilling the original packaging functions.

[0004] For transporting refrigerated goods such as food and medicine, ice packs are usually placed inside for refrigeration. However, using ordinary corrugated cardboard boxes can easily lead to water seepage into the boxes, causing damage and even affecting the packaging effect. Therefore, a waterproof packaging box is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this application is to provide a waterproof packaging carton, which aims to improve the problem of ordinary corrugated cartons in the prior art, which are prone to water intrusion, resulting in damage to the carton and even affecting the packaging effect of the goods.

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

[0007] A waterproof packaging carton, comprising:

[0008] The base plate, which is a rectangular structure, serves as the load-bearing foundation for the cardboard box.

[0009] The first side plate and the second side plate are symmetrically arranged around the bottom plate;

[0010] A horizontal fold line is provided between the first side plate and the second side plate to realize the sealing folding operation of the first side plate and the second side plate;

[0011] A slanted fold line is provided at the connection between adjacent first side plates and second side plates. The connection angle between adjacent first side plates, second side plates and bottom plates is folded through the slanted fold line to form a triangular fold plate.

[0012] Vertical fold line one and vertical fold line two are provided. Vertical fold line one is located at the connection between the adjacent triangular fold plate and the second side plate, and vertical fold line two is located at the connection between the adjacent triangular fold plate and the first side plate. Vertical fold line one and vertical fold line two are perpendicular to the bottom plate.

[0013] The above technical solution effectively enhances the waterproofness of the corners of the cardboard box.

[0014] Preferably, the first side plate, the second side plate, and the bottom plate are integrally formed and connected using corrugated cardboard.

[0015] The above technical solution effectively reduces water seepage through gaps caused by splicing cardboard boxes.

[0016] Preferably, the base plate, the first side plate and the second side plate are all provided with coated paper inside, and the coated paper covers the interior of the base plate, the first side plate and the second side plate.

[0017] The above technical solution achieves the effect of adding an auxiliary protective layer to corrugated cardboard.

[0018] Preferably, the outer wall of the coated paper is provided with a waterproof membrane, which covers the outer wall of the coated paper.

[0019] The above technical solution achieves the effect of preventing internal moisture penetration.

[0020] Preferably, both the first and second side plates are provided with sealant, and the joints of the waterproof membrane are sealed with sealant.

[0021] The above technical solutions have achieved the effect of strengthening waterproof sealing.

[0022] Preferably, the sealant is a silicone sealant liquid, used to fill joint gaps.

[0023] The above technical solution achieves a continuous and effective waterproofing effect.

[0024] Preferably, the waterproof membrane is made of polyethylene and has a thickness of 0.1-0.3 mm.

[0025] The above technical solutions achieve the desired effect of meeting the requirements for lightweight and waterproof cardboard boxes.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. In this utility model, by pre-setting vertical fold lines and diagonal fold lines at the connection points of adjacent side panels of the bottom plate, first side panel, and second side panel, which are integrally formed from corrugated cardboard, bending the vertical fold lines causes the side panels to partially fold to form triangular folds. After the triangular folds are bent again along the vertical fold lines, they fit against the corresponding side panels, thus preventing water from flowing out from the corners and enhancing the waterproofness of the corners of the cardboard box. This solves the problem that ordinary corrugated cardboard boxes are prone to water seepage, which can damage the cardboard box and even affect the packaging effect of the goods, thereby improving the practicality of the packaging cardboard box.

[0028] 2. In this utility model, the inner side is beautified and protected by coated paper, and the waterproof membrane blocks internal moisture. When encountering a humid environment, the waterproof membrane first blocks water. After a small amount of water comes into contact with the side panel, the sealing structure formed by the triangular fold plate and the sealant prevents water seepage. The horizontal fold line ensures the flexibility of the side panel folding. The multi-component collaboration achieves waterproof, beautiful and high-strength packaging functions, ensuring the safe storage of the contents in the box in a humid environment. Attached Figure Description

[0029] Figure 1 This is a three-dimensional schematic diagram of a waterproof packaging carton proposed in this utility model;

[0030] Figure 2 This is a schematic diagram of a triangular folding plate for a waterproof packaging carton proposed in this utility model;

[0031] Figure 3 This is a plan view of a waterproof packaging carton proposed in this utility model;

[0032] Figure 4 This is a cross-sectional schematic diagram of a waterproof packaging carton proposed in this utility model.

[0033] Figure 5 for Figure 4 Schematic diagram at point A in the middle;

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Base plate; 2. First side plate; 3. Horizontal fold line; 4. Second side plate; 5. Vertical fold line one; 6. Vertical fold line two; 7. Triangular fold plate; 8. Diagonal fold line; 9. Coated paper; 10. Waterproof membrane; 11. Sealant. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0037] Reference Figures 1-3 One embodiment of this utility model provides: a waterproof packaging carton, comprising:

[0038] Base plate 1, which is a rectangular structure, serves as the supporting foundation for the cardboard box. It can stably support the internal items and distribute the pressure of the weight of the items on the cardboard box.

[0039] The first side panel 2 and the second side panel 4 are symmetrically arranged around the bottom plate 1, together forming the side protection structure of the carton.

[0040] The horizontal fold line 3 is set between the first side plate 2 and the second side plate 4 to realize the sealing folding operation of the first side plate 2 and the second side plate 4. When folding, the horizontal fold line 3 can guide the side plate to bend accurately and avoid cracks or damage to the side plate due to forced folding.

[0041] The oblique fold line 8 is set at the connection between the adjacent first side plate 2 and the second side plate 4. The connection angle between the adjacent first side plate 2, the second side plate 4 and the bottom plate 1 is folded through the oblique fold line 8 to form a triangular fold plate 7. During the folding process, the oblique fold line 8 guides the side plate to deform in an orderly manner, so that the triangular fold plate 7 fits tightly with the side plate and fills the corner gap.

[0042] Vertical fold line 1 (5) and vertical fold line 2 (6) are located at the connection between adjacent triangular fold plate 7 and second side plate 4, and vertical fold line 2 (6) is located at the connection between adjacent triangular fold plate 7 and first side plate 2. Vertical fold line 1 and vertical fold line 2 (6) are perpendicular to the bottom plate 1 and are used to guide the triangular fold plate 7 to bend twice, so that the triangular fold plate 7 can fit completely with the corresponding side plate, further enhancing the corner sealing effect. The first side plate 2, the second side plate 4 and the bottom plate 1 are connected by corrugated cardboard in one piece.

[0043] Reference Figure 1 , Figure 4 and Figure 5 The bottom plate 1, the first side plate 2, and the second side plate 4 are all lined with coated paper 9. The coated paper 9 covers the inside of the bottom plate 1, the first side plate 2, and the second side plate 4, which can help prevent moisture from directly contacting the corrugated cardboard and reduce the softening and deformation of the corrugated cardboard due to water absorption. A waterproof membrane 10 is provided on the outer wall of the coated paper 9. The waterproof membrane 10 covers the outer wall of the coated paper 9. The first side plate 2 and the second side plate 4 are both lined with sealant 11. The seams of the waterproof membrane 10 are sealed with sealant 11. The sealant 11 is a silicone sealant liquid, which is used to fill the seam gaps and form an "adhesive sealing layer" inside the carton to strengthen the waterproof defense. The waterproof membrane 10 is made of polyethylene material with a thickness of 0.1-0.3mm. It has good waterproof and moisture-proof performance and is lightweight and thin, so it will not excessively increase the thickness of the carton or affect the structural flexibility.

[0044] Working principle: The packaging carton is integrally formed from a base plate 1, a first side plate 2, and a second side plate 4 using corrugated cardboard. During the forming process, vertical fold lines 1-5, 2-6, and 8-8 are pre-set at the connection points of adjacent side plates. Before use, by bending vertical fold lines 1-5 and 2-6, the 2-8-8-the-side plate is partially folded to form a triangular fold plate 7. After the triangular fold plate 7 is bent again along the vertical fold lines, it fits against the corresponding side plate, thereby preventing water from leaking out from the corners.

[0045] When packing items, the items are placed on the base plate 1, and the inside is covered with coated paper 9, which not only beautifies the box but also provides additional protection. The waterproof membrane 10 blocks internal moisture. In the event of a humid environment, the waterproof membrane 10 first blocks moisture. Even if a small amount of moisture comes into contact with the side panels, the sealing structure formed by the triangular fold plate 7 and the sealant 11 can prevent moisture from seeping in from the corner gaps. The horizontal fold line 3 ensures the flexibility of the side panel folding. All components work together to achieve waterproof, beautiful, and high-strength packaging functions, ensuring the safety of the items stored in the box in a humid environment.

Claims

1. A waterproof packaging carton, characterized in that: include: The base plate (1) is a rectangular structure and serves as the supporting foundation for the carton; The first side plate (2) and the second side plate (4) are symmetrically arranged around the bottom plate (1); A horizontal fold line (3) is provided between the first side plate (2) and the second side plate (4) to realize the sealing folding operation of the first side plate (2) and the second side plate (4); The oblique fold line (8) is set at the connection between the adjacent first side plate (2) and the second side plate (4). The connection angle between the adjacent first side plate (2), the second side plate (4) and the bottom plate (1) is folded through the oblique fold line (8) to form a triangular fold plate (7). Vertical fold line one (5) and vertical fold line two (6), the vertical fold line one (5) is set at the connection between the adjacent triangular fold plate (7) and the second side plate (4), the vertical fold line two (6) is set at the connection between the adjacent triangular fold plate (7) and the first side plate (2), the vertical fold line one (5) and the vertical fold line two (6) are perpendicular to the bottom plate (1).

2. The packaging carton of claim 1, wherein: The first side plate (2), the second side plate (4) and the bottom plate (1) are integrally formed and connected using corrugated cardboard.

3. The packaging carton of claim 1, wherein: The base plate (1), the first side plate (2) and the second side plate (4) are all provided with coated paper (9), and the coated paper (9) covers the interior of the base plate (1), the first side plate (2) and the second side plate (4).

4. The packaging carton of claim 3, wherein: The outer wall of the coated paper (9) is provided with a waterproof membrane (10), which covers the outer wall of the coated paper (9).

5. The packaging carton of claim 4, wherein: The first side plate (2) and the second side plate (4) are both provided with sealant (11), and the joints of the waterproof membrane (10) are sealed with sealant (11).

6. A packaging carton according to claim 5, wherein: The sealant (11) is a silicone sealant liquid, used to fill the gaps in the joints.

7. A packaging carton according to claim 6, wherein: The waterproof membrane (10) is made of polyethylene and has a thickness of 0.1-0.3 mm.

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