Puncture-resistant waterproof high-strength corrugated board

Abstract

The utility model discloses a high-strength corrugated board with puncture resistance and water resistance, which comprises a paper core, and inner paper and surface paper fixed on two sides of the paper core, a gap between the paper core and the inner paper is filled with a support ball, two sides of the support ball are fixedly connected with first support rods, and the first support rods are fixedly connected with second support rods. The ends, away from the supporting ball, of the two first supporting rods are fixedly connected with the inner paper and the paper core correspondingly, the gap between the paper core and the surface paper is filled with a semicircular supporting block, the end, away from the paper core, of the supporting block is fixedly connected with the surface paper, and the side, away from the paper core, of the inner paper is fixedly connected with a first waterproof layer. The side, away from the paper core, of the face paper is fixedly connected with a second waterproof layer, and the side, away from the face paper, of the second waterproof layer is fixedly connected with a protective layer. By arranging the supporting blocks, the supporting balls and other structures, the strength of the corrugated board is effectively improved, the corrugated board is endowed with excellent anti-puncture and waterproof performance, and the corrugated board has good market application prospects.

Description

Technical Field

[0001] This utility model relates to the field of corrugated cardboard technology, and in particular to a high-strength corrugated cardboard with puncture resistance and water resistance. Background Technology

[0002] Corrugated cardboard is a widely used packaging material, made of at least one layer of corrugated core paper and two layers of linerboard bonded together with adhesive. It gets its name from its wavy, corrugated structure. This unique structure gives it excellent cushioning and compressive strength, effectively protecting contents from impact and compression during transportation and storage. It is widely used in the packaging of various products and is a crucial basic material in modern logistics and commodity packaging industries.

[0003] Currently, corrugated cardboard has a relatively simple structure, making it easily punctured by foreign objects during use and handling. This not only seriously affects the appearance integrity of the corrugated cardboard but also significantly weakens its protective performance. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art and to propose a high-strength corrugated cardboard with puncture resistance and water resistance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-strength corrugated cardboard with puncture resistance and water resistance includes a core and linerboard and faceboard fixed on both sides thereon. The gap between the core and the linerboard is filled with a support ball. A first support rod is fixedly connected to both sides of the support ball. The ends of the two first support rods away from the support ball are fixedly connected to the linerboard and the core, respectively. The gap between the core and the faceboard is filled with a semi-circular support block. The end of the support block away from the core is fixedly connected to the faceboard. A first waterproof layer is fixedly connected to the side of the linerboard away from the core. A second waterproof layer is fixedly connected to the side of the faceboard away from the core. A protective layer is fixedly connected to the side of the second waterproof layer away from the faceboard.

[0007] Preferably, the support ball has a first cavity, and a support ring is fixedly embedded on the inner wall of the first cavity.

[0008] Preferably, the support block has a second cavity, and the second cavity has a second support rod arranged in an inverted V shape, with both ends of the second support rod fixedly connected to the inner sidewall of the second cavity.

[0009] Preferably, the first waterproof layer is made of polypropylene film.

[0010] Preferably, the second waterproof layer is made of polyurethane coating.

[0011] Preferably, the protective layer is made of an acrylic coating.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention effectively enhances the paper core support strength by setting up a support ball, a first cavity, a support ring, and a first support rod, thereby strengthening the overall strength of the corrugated cardboard.

[0014] This invention utilizes the design of support blocks, a second cavity, and a second support rod to further enhance the support strength of the paper core and significantly improve the overall strength of corrugated cardboard.

[0015] This utility model significantly improves the waterproof and puncture-resistant performance of corrugated cardboard by adding a waterproof layer and a protective layer, effectively enhancing the product's practicality.

[0016] This invention, by setting up structures such as support blocks and support balls, not only effectively improves the strength of corrugated cardboard, but also endows it with excellent puncture resistance and waterproof performance, and has good market application prospects. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a high-strength corrugated cardboard with puncture resistance and water resistance proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of a support block for a high-strength corrugated cardboard with puncture resistance and waterproofing, as proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of a support ball for a high-strength corrugated cardboard material that is puncture-resistant and waterproof, as proposed in this utility model.

[0020] In the diagram: 1-paper core, 2-inner paper, 3-outer paper, 4-first waterproof layer, 5-support ball, 6-first support rod, 7-support block, 8-second waterproof layer, 9-protective layer, 10-first cavity, 11-second support rod, 12-first cavity, 13-support ring. Detailed Implementation

[0021] 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.

[0022] Reference Figure 1-3A high-strength corrugated cardboard with puncture resistance and water resistance includes a core 1 and inner paper 2 and outer paper 3 fixed on both sides thereon. The gap between the core 1 and the inner paper 2 is filled with a support ball 5 for supporting a first support rod 6. The two sides of the support ball 5 are fixedly connected to the first support rod 6 for supporting the core 1 and improving the overall strength. The ends of the two first support rods 6 away from the support ball 5 are fixedly connected to the inner paper 2 and the core 1 respectively. The support ball 5 has a first cavity 12 to reduce weight. The inner side wall of the first cavity 12 is fixedly embedded with a support ring 13 for supporting the first cavity 12.

[0023] In this embodiment, a semi-circular support block 7 is filled in the gap between the paper core 1 and the face paper 3 to support the paper core 1 and improve the overall strength. The end of the support block 7 away from the paper core 1 is fixedly connected to the face paper 3. A second cavity 10 is provided inside the support block 7 to reduce weight. An inverted V-shaped second support rod 11 is provided inside the second cavity 10 to support the second cavity 10. The two ends of the second support rod 11 are fixedly connected to the inner sidewall of the second cavity 10 respectively.

[0024] In this embodiment, a first waterproof layer 4 is fixedly connected to the side of the inner paper 2 away from the paper core 1 to improve the waterproof performance of the paper core 1. The first waterproof layer 4 is made of polypropylene film, which has good waterproof properties. A second waterproof layer 8 is fixedly connected to the side of the outer paper 3 away from the paper core 1 to improve the waterproof performance of the paper core 1. The second waterproof layer 8 is made of polyurethane coating, which has good waterproof properties. A protective layer 9 is fixedly connected to the side of the second waterproof layer 8 away from the outer paper 3 to provide external protection for the paper core 1. The protective layer 9 is made of acrylic coating, which has high hardness and good toughness and can block puncture force.

[0025] In this embodiment, firstly, the first waterproof layer 4 and the second waterproof layer 8 respectively enhance the waterproof performance of both sides of the paper core 1, and the protective layer 9 enhances the puncture resistance of the surface of the paper core 1. Subsequently, the support block 7, the support ball 5, and the first support rod 6 fill the gap between the paper core 1 and the inner paper 2 and the outer paper 3, providing support for the paper core 1 and effectively improving its strength. In addition, the first cavity 10 and the second cavity 12 in the support block 7 and the support ball 5 can reduce weight and also achieve buffering and energy absorption through deformation under external pressure.

[0026] 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 high-strength corrugated cardboard with puncture resistance and water resistance, comprising a core (1) and inner liner (2) and outer liner (3) fixed on both sides thereof, characterized in that: The gap between the paper core (1) and the inner paper (2) is filled with a support ball (5). The two sides of the support ball (5) are fixedly connected with first support rods (6). The ends of the two first support rods (6) away from the support ball (5) are fixedly connected to the inner paper (2) and the paper core (1) respectively. The gap between the paper core (1) and the face paper (3) is filled with a semi-circular support block (7). The end of the support block (7) away from the paper core (1) is fixedly connected to the face paper (3). The side of the inner paper (2) away from the paper core (1) is fixedly connected with a first waterproof layer (4). The side of the face paper (3) away from the paper core (1) is fixedly connected with a second waterproof layer (8). The side of the second waterproof layer (8) away from the face paper (3) is fixedly connected with a protective layer (9).

2. The high-strength corrugated cardboard with puncture resistance and water resistance according to claim 1, characterized in that: The support ball (5) has a first cavity (12) inside, and a support ring (13) is fixedly embedded on the inner side wall of the first cavity (12).

3. The high-strength corrugated cardboard with puncture resistance and water resistance according to claim 1, characterized in that: The support block (7) has a second cavity (10) inside, and the second cavity (10) has a second support rod (11) arranged in an inverted V shape. The two ends of the second support rod (11) are respectively fixedly connected to the inner sidewall of the second cavity (10).

4. A high-strength corrugated cardboard with puncture resistance and water resistance according to claim 1, characterized in that: The first waterproof layer (4) is made of polypropylene film.

5. A high-strength corrugated cardboard with puncture resistance and water resistance according to claim 1, characterized in that: The second waterproof layer (8) is made of polyurethane coating.

6. A high-strength corrugated cardboard with puncture resistance and water resistance according to claim 1, characterized in that: The protective layer (9) is made of an acrylic coating.

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