A composite corrugated cardboard
By adding a waterproof film and connecting mechanism to the corrugated cardboard, the problems of insufficient waterproof performance and unstable position of the corrugated cardboard are solved, achieving both waterproof and stable position effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAINING YUEXIANG PACKAGING CO LTD
- Filing Date
- 2025-09-19
- Publication Date
- 2026-07-31
AI Technical Summary
Existing corrugated cardboard has insufficient waterproof performance and is unstable in position when used in combination, making it easy to move.
A waterproof membrane is fixedly connected between two layers of corrugated cardboard, and adjacent pads are fixedly connected by a connecting mechanism. Wooden pads are used and coated with anti-corrosion paint. The connecting mechanism includes a connecting groove, a connecting block and fastening screws.
It achieves excellent waterproof performance, preventing water from entering the items, and the assembled cardboard is stable in position, increasing the usable area.
Smart Images

Figure CN224578554U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of corrugated cardboard technology, and in particular to a composite corrugated cardboard. Background Technology
[0002] Corrugated cardboard is a multi-layered adhesive, consisting of at least one layer of corrugated core paper and one layer of cardboard. It has high mechanical strength and can withstand collisions and drops during handling. The actual performance of corrugated cardboard depends on three factors: the characteristics of the core paper and the cardboard, and the structure of the carton itself.
[0003] Corrugated cardboard has a wide range of uses, including product packaging, industrial mats, and DIY crafts. However, when used as industrial mats, ordinary corrugated cardboard has two main shortcomings: 1. Most existing corrugated cardboard lacks waterproofing. When laid on the ground, moisture can easily seep into the cardboard if the ground is damp, causing the items placed on it to become damp. 2. Due to the varying sizes of items, multiple corrugated cardboard units sometimes need to be combined to increase usable space. However, existing combinations of corrugated cardboard units are prone to shifting, affecting their usability. Utility Model Content
[0004] The purpose of this utility model is to provide a composite corrugated cardboard to solve the problems mentioned in the background section.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A composite corrugated cardboard includes a composite cardboard comprising two outermost layers of corrugated cardboard, with a waterproof film fixedly connected between the two layers of corrugated cardboard. The composite cardboard is placed inside a pad, and adjacent pads are fixedly connected together by a connecting mechanism.
[0006] Furthermore, the connecting mechanism includes connecting grooves formed around the pad, connecting blocks provided in two connected connecting grooves, threaded grooves formed at the bottom of the connecting blocks and connecting grooves, and fastening screws threadedly connected in the threaded grooves.
[0007] Furthermore, the pad is a wooden pad.
[0008] Furthermore, the outer surface of the pad is coated with anti-corrosion paint.
[0009] Furthermore, the waterproof film is a PE film.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The composite cardboard in this utility model consists of two layers of corrugated cardboard and a waterproof film. The waterproof film is located between the two layers of corrugated cardboard. Therefore, under the protection of the corrugated cardboard on both sides, the waterproof film can maintain its integrity. The waterproof film has good waterproof performance, thus preventing ground moisture from entering the item and causing it to become damp.
[0011] 2. This utility model places composite paperboard inside a pad and then connects adjacent pads sequentially using a connecting mechanism, thereby combining multiple composite paperboards together to increase the usable area. Furthermore, adjacent composite paperboards do not move, ensuring stable positioning and ease of use. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural diagram of a composite corrugated cardboard proposed in this utility model; Figure 2 This is a schematic diagram of the structure of part A of the composite corrugated cardboard proposed in this utility model; Figure 3 This is a schematic diagram of the composite corrugated cardboard structure proposed in this utility model; Figure 4 This is a schematic diagram of the structure of part B of the dashed frame of the composite corrugated cardboard proposed in this utility model. Figure 5 This is a schematic diagram of the pad structure of a composite corrugated cardboard proposed in this utility model.
[0013] In the diagram: 1. Composite cardboard, 2. Corrugated cardboard, 3. Waterproof film, 4. Pad, 5. Connecting mechanism, 5a. Connecting groove, 5b. Connecting block, 5c. Threaded groove, 5d. Fastening screw. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0015] Reference Figure 1-5 A composite corrugated cardboard includes a composite cardboard 1, which includes two outermost layers of corrugated cardboard 2. A waterproof film 3 is fixedly connected between the two layers of corrugated cardboard 2. The composite cardboard 1 is placed inside a pad 4, and two adjacent pads 4 are fixedly connected together by a connecting mechanism 5.
[0016] In the above embodiment, the composite paperboard 1 is composed of two layers of corrugated paperboard 2 and a waterproof film 3. The waterproof film 3 is located between the two layers of corrugated paperboard 2. Therefore, under the protection of the corrugated paperboard 2 on both sides, the waterproof film 3 can maintain its integrity. The waterproof film 3 has good waterproof performance, so it can prevent ground moisture from entering the item and causing it to become damp.
[0017] By placing the composite paperboard 1 inside the pad 4, and then connecting adjacent pads 4 sequentially through the connecting mechanism 5, multiple composite paperboards 1 can be combined together, increasing the usable area. Furthermore, adjacent composite paperboards 1 will not move, ensuring stable positioning and ease of use.
[0018] Specifically, the connecting mechanism 5 includes connecting grooves 5a formed around the pad 4, connecting blocks 5b are provided in the two connected connecting grooves 5a, and threaded grooves 5c are formed at the bottom of the connecting blocks 5b and the connecting grooves 5a, with fastening screws 5d threadedly connected in the threaded grooves 5c.
[0019] In the above embodiment, the connecting block 5b is fixed and disassembled by screwing the fastening screw 5d into and out of the threaded groove 5c.
[0020] Specifically, pad 4 is a wooden pad, and the outer surface of pad 4 is coated with anti-corrosion paint.
[0021] In the above embodiments, the wooden pad has the advantages of good strength and rigidity, and can bear heavy objects. The anti-corrosion paint can improve the anti-corrosion effect of the wooden pad.
[0022] Specifically, waterproof membrane 3 is a PE film.
[0023] In the above embodiments, PE film has the advantages of low cost, good flexibility and water resistance, and being odorless and non-toxic.
[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A composite corrugated paperboard comprising a composite paperboard (1), characterized in that, The composite paperboard (1) includes two outermost layers of corrugated paperboard (2), and a waterproof film (3) is fixedly connected between the two layers of corrugated paperboard (2). The composite paperboard (1) is placed on the inner side of the pad (4), and two adjacent pads (4) are fixedly connected together by a connecting mechanism (5).
2. A composite corrugated paperboard according to claim 1, characterized in that, The connecting mechanism (5) includes connecting grooves (5a) formed around the pad (4), connecting blocks (5b) are provided in the two connected connecting grooves (5a), and threaded grooves (5c) are formed at the bottom of the connecting blocks (5b) and the connecting grooves (5a), and fastening screws (5d) are threadedly connected in the threaded grooves (5c).
3. A composite corrugated paperboard according to claim 1, wherein The pad (4) is a wooden pad.
4. A composite corrugated paperboard according to claim 1, wherein The outer surface of the pad (4) is coated with anti-corrosion paint.
5. A composite corrugated paperboard according to claim 1, wherein The waterproof film (3) is a PE film.