High-strength anti-seismic and shock-absorbing corrugated carton

Abstract

The invention relates to a high-strength shock-resistant and shock-absorbing corrugated carton, and belongs to the technical field of corrugated cartons, a bottom shock-resistant part is designed at the bottom of the corrugated carton, a side wall shock-absorbing part is designed on the side wall of the corrugated carton, a top suspension part is designed at the top of the corrugated carton, and the three areas cooperate to form a graded shock-absorbing system. Through the synergistic effect of the bottom, the side wall and the top, comprehensive protection of the foam material is achieved, abrasion and falling caused by vibration are reduced, the graded damping system can adapt to vibration of different frequencies and strengths, the problem that the foam material is poor in adaptability in the high-strength vibration environment is effectively solved, and the service life of the foam material is prolonged. And the overall performance and reliability of packaging are improved, so that the problems that in the prior art, a foam material is poor in adaptability in a high-strength vibration environment, and finally, the material is abraded and falls off are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of corrugated cartons, and particularly relates to a corrugated carton with high strength, earthquake resistance and shock absorption. Background Art

[0002] As a lightweight, environmentally friendly and recyclable packaging material, corrugated cartons have gradually become the main packaging form for various commodities. In the prior art, the utility model patent with the publication number CN 216071147 U discloses a corrugated carton with good earthquake resistance. In this patent, a structural design of combining corrugated cardboard with outer corner protection blocks is adopted. By setting foam strips at the inner corners of the box body and using the fixing method of inner corner protection blocks and double-sided foam adhesives, the earthquake resistance performance of the corrugated carton is improved.

[0003] However, there are still some problems in the implementation of the above patent. Especially in high-intensity vibration scenarios such as air transportation, heavy machinery transportation and military equipment transportation, there are significant defects: First, the foam material has poor adaptability to vibrations with specific frequencies and amplitudes, and its energy absorption characteristics cannot effectively match the complex vibration spectra in different transportation environments; Second, under the action of continuous high-intensity vibration loads, the foam material will undergo an obvious fatigue deterioration process, and the molecular structure will gradually be damaged under repeated stress, resulting in a continuous attenuation of its elastic modulus and damping performance; Third, the bonding interface between the foam strip and the double-sided adhesive is prone to peeling failure under long-term dynamic loads, ultimately leading to problems such as material wear and shedding. These technical defects seriously restrict the actual application effect of the patent solution in high-intensity vibration environments. There is an urgent need for a corrugated carton with high strength, earthquake resistance and shock absorption, and a composite shock absorption structure is designed for different stress modes. Summary of the Invention

[0004] To solve the above problems existing in the prior art, the present invention provides a corrugated carton with high strength, earthquake resistance and shock absorption, which solves the problems of poor adaptability of the foam material in the high-intensity vibration environment in the prior art and ultimately leads to material wear and shedding.

[0005] The object of the present invention can be achieved by the following technical solutions:

[0006] A corrugated carton with high strength, earthquake resistance and shock absorption, comprising a bottom impact resistance part, a side wall shock absorption part and a top suspension part. The bottom impact resistance part and the top suspension part are connected by the side wall shock absorption part. The bottom impact resistance part, the side wall shock absorption part and the top suspension part form the overall corrugated carton with hierarchical shock absorption.

[0007] As a further solution of the present invention, the bottom impact resistance part includes a honeycomb aluminum plate, corrugated cardboard and a non-Newtonian fluid bag. The honeycomb aluminum plate, the high-strength corrugated cardboard and the non-Newtonian fluid bag are stacked in sequence from top to bottom.

[0008] As a further solution of the present invention, the corrugated cardboard is of a wavy structure.

[0009] As a further solution of the present invention, the non-Newtonian fluid bag is made of starch-based or silica gel-based material, and its viscosity increases with the increase of impact acceleration. The non-Newtonian fluid bag remains in a soft state under static pressure.

[0010] As a further solution of the present invention, the side wall shock absorption part includes a first compression spring arranged horizontally. A product tray is arranged inside the whole corrugated cardboard box. The first compression spring is connected to the product tray through an elastic hinge, and the first compression spring and the elastic hinge form a horizontal vibration energy dissipation structure.

[0011] As a further solution of the present invention, the material of the elastic hinge is ethylene propylene diene monomer rubber.

[0012] As a further solution of the present invention, the first compression springs and the elastic hinges are distributed in an array on the inner walls of the four sides of the whole corrugated cardboard box and are symmetrically distributed. 3 to 5 groups of first compression springs and elastic hinges are arranged on the inner wall of each box.

[0013] As a further solution of the present invention, the top suspension part includes an airbag. The airbag suspends the product tray through a nylon rope, and the airbag filters high-frequency vibration through gas compressibility.

[0014] As a further solution of the present invention, the airbag is of a multi-chamber structure. The multi-chamber structure includes a main air chamber and auxiliary air chambers. The auxiliary air chambers are distributed in an array around the main air chamber, and the main air chamber and the auxiliary air chambers are connected through one-way valves.

[0015] As a further solution of the present invention, the airbag suspends the product tray through a silica fiber braided belt, and a second compression spring is arranged at the connection between the silica fiber braided belt and the airbag.

[0016] The beneficial effects of the present invention are as follows:

[0017] By designing a bottom anti-impact part at the bottom of the corrugated cardboard box, a side wall shock absorption part on the side walls, and a top suspension part at the top of the corrugated cardboard box, a hierarchical shock absorption system is formed by the cooperation of these three areas. Through the cooperation of the bottom, side walls and top, comprehensive protection of the foam material is achieved, reducing wear and shedding caused by vibration. The hierarchical shock absorption system can adapt to vibrations of different frequencies and intensities, effectively solving the problem of poor adaptability of the foam material in a high-intensity vibration environment, improving the overall performance and reliability of the packaging, and thus solving the problem of poor adaptability of the foam material in a high-intensity vibration environment in the prior art, which ultimately leads to material wear and shedding. Description of the Drawings

[0018] For the convenience of those skilled in the art to understand, the present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the bottom shock-resistant part of the present invention;

[0021] Figure 3 It is an installation schematic diagram of the side wall shock-absorbing part and the top suspension part of the present invention.

[0022] Description of main component symbols:

[0023] In the figure:

[0024] 1. Bottom shock-resistant part; 11. Honeycomb aluminum plate; 12. Corrugated cardboard; 13. Non-Newtonian fluid bag; 2. Side wall shock-absorbing part; 21. First compression spring; 22. Elastic hinge; 3. Top suspension part; 31. Airbag; 32. Silicone fiber braided belt; 33. Second compression spring; 4. Product tray. Specific embodiments

[0025] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following will describe in detail the specific embodiments, structures, features and their effects of the present invention in conjunction with the accompanying drawings and preferred embodiments.

[0026] Please refer to Figures 1-3 , this embodiment provides a corrugated cardboard box with high-strength earthquake resistance and shock absorption, including a bottom shock-resistant part 1, a side wall shock-absorbing part 2 and a top suspension part 3. The bottom shock-resistant part 1 and the top suspension part 3 are connected by the side wall shock-absorbing part 2. The bottom shock-resistant part 1, the side wall shock-absorbing part 2 and the top suspension part 3 form an overall corrugated cardboard box with hierarchical shock absorption;

[0027] Among them, the function of the bottom impact-resistant part 1: The bottom impact-resistant part 1 is designed as a structure with high elasticity and strength. When the corrugated cardboard box is impacted externally, it can play a buffering role, reducing the direct impact of the impact force on the internal product. This design can effectively disperse the impact energy, avoid energy concentration at a certain point, thereby reducing the risk of material wear and shedding; The function of the sidewall shock-absorbing part 2: During vibration, the sidewall shock-absorbing part 2 can resist shear force, reducing the shear force on the internal foam material caused by excessive vibration of the box sidewall. The design of the sidewall shock-absorbing part 2 can reduce the resonance between the sidewall and the vibration frequency, avoid the increase in vibration amplitude caused by resonance, thereby reducing the damage to the foam material. In addition, by enhancing the stability of the sidewall, the deformation of the sidewall caused by vibration can be reduced, thereby protecting the internal material from excessive extrusion and stretching; The function of the top suspension part 3: The design of the top suspension part 3 can provide a certain suspension space for the top when it is impacted, reducing the direct impact force on the top. Through the suspension design of the top, the speed and intensity of vibration transmission upward can be effectively reduced, protecting the internal foam material and products. The top suspension part 3 provides an additional buffering space for the internal foam material, enabling the foam material to have a larger space to absorb energy during vibration, reducing wear and shedding.

[0028] Currently, the existing corrugated cardboard boxes with good seismic performance have significant defects in high-intensity vibration scenarios such as air transportation, heavy machinery transportation, and military equipment transportation: First, the adaptability of foam materials to vibrations with specific frequencies and amplitudes is poor, and their energy absorption characteristics cannot effectively match the complex vibration spectra in different transportation environments; Second, under the action of continuous high-intensity vibration loads, the foam material will undergo an obvious fatigue deterioration process, and the molecular structure will gradually be damaged under repeated stress, resulting in a continuous attenuation of its elastic modulus and damping performance; Third, the bonding interface between the foam strip and the double-sided adhesive is prone to peeling failure under long-term dynamic loads, ultimately leading to problems such as material wear and shedding. These technical defects seriously restrict the actual application effect of this patent solution in high-intensity vibration environments.

[0029] To solve the above problems, in this embodiment, a bottom impact-resistant part 1 is designed at the bottom of the corrugated cardboard box, a sidewall shock-absorbing part 2 is designed on the sidewall, and a top suspension part 3 is designed at the top of the corrugated cardboard box. Through the cooperation of these three regions, a hierarchical shock-absorbing system is formed. Through the coordinated action of the bottom, sidewall, and top, comprehensive protection of the foam material is achieved, reducing wear and shedding caused by vibration. The hierarchical shock-absorbing system can adapt to vibrations with different frequencies and intensities, effectively solving the problem of poor adaptability of foam materials in high-intensity vibration environments, improving the overall performance and reliability of the packaging, and thus solving the problem of poor adaptability of foam materials in high-intensity vibration environments in the prior art, ultimately leading to material wear and shedding.

[0030] Since it is targeted at high-intensity vibration scenarios such as air transportation, heavy machinery transportation, and military equipment transportation, in this scenario, items are easily affected by impacts and vibrations. It is necessary to consider the shock protection of corrugated cartons while ensuring that the weight of the corrugated cartons themselves is not too heavy. For this reason, in one embodiment, the bottom shock-resistant portion 1 includes a honeycomb aluminum plate 11, a corrugated cardboard 12, and a non-Newtonian fluid bag 13. The honeycomb aluminum plate 11, the corrugated cardboard 12, and the non-Newtonian fluid bag 13 are stacked in sequence from top to bottom. The corrugated cardboard 12 is a high-strength cardboard and has a corrugated structure. Among them, the thickness of the honeycomb aluminum plate 11 is 2 mm. The corrugated corrugated cardboard 12 can absorb vertical impact energy through deformation. The advantage of using the honeycomb aluminum plate 11 is that the honeycomb structure has excellent strength and stiffness, and is lightweight, which can provide good support and prevent the items in the box from being damaged due to vibration during transportation. The high-strength corrugated cardboard 12 has a corrugated structure, and this structure can deform when impacted, absorb and disperse the impact energy, thereby protecting the internal items. Its unique structure can generate deformation when impacted, and this deformation helps to absorb and disperse the impact energy and reduce the impact force transmitted to the internal items; the non-Newtonian fluid can quickly thicken when impacted, form a protective layer, absorb and disperse the impact energy, thereby reducing the damage to the internal items. Among them, the non-Newtonian fluid bag 13 is made of starch-based or silica-based material, and the viscosity increases with the increase of the impact acceleration. The non-Newtonian fluid bag 13 remains in a soft state under static pressure.

[0031] In order to further improve the shock absorption effect and avoid product damage caused by vibration and impact during transportation, in one embodiment, the side wall shock absorption portion 2 includes a first compression spring 21 arranged horizontally. A product tray 4 is provided inside the entire corrugated cardboard box. The first compression spring 21 is connected to the product tray 4 through an elastic hinge 22. The first compression spring 21 and the elastic hinge 22 form a horizontal vibration energy dissipation structure. The material of the elastic hinge 22 is ethylene propylene diene monomer (EPDM) rubber. The first compression spring 21 and the elastic hinge 22 are arranged in an array on the inner walls of the four sides of the entire corrugated cardboard box and are symmetrically distributed. Each inner wall of the box is provided with 3 to 5 groups of the first compression spring 21 and the elastic hinge 22. The design of the side wall shock absorption portion 2, especially the horizontally arranged first compression spring 21, can effectively absorb and relieve the impact force and vibration energy generated during transportation. This design increases the overall buffering capacity of the corrugated cardboard box and protects the internal products from damage. The horizontal vibration energy dissipation structure formed by the first compression spring 21 and the elastic hinge 22 can convert the vibration energy into heat energy, thereby reducing the vibration energy transmitted to the product. The elastic hinge 22 is made of EPDM rubber material, which has good elasticity and aging resistance and can adapt to various harsh environments to ensure long-term stable shock absorption effect. The first compression spring 21 and the elastic hinge 22 are arranged in an array on the inner walls of the four sides of the entire corrugated cardboard box and are symmetrically distributed. This layout can ensure that the box body receives a uniform shock absorption effect and avoid product damage caused by local overload. Each inner wall of the box is provided with 3 to 5 groups of the first compression spring 21 and the elastic hinge 22. Such a quantity and position layout can be optimized according to the weight and volume of the product to achieve the best shock absorption effect.

[0032] In order to enable corrugated cartons to withstand various harsh environments, such as high temperature, low temperature, humidity changes, etc., it is necessary to ensure that the materials used can adapt to various environmental conditions, guaranteeing the reliability and effectiveness of the packaging system in various scenarios. In this regard, in one embodiment, the top suspension portion 3 includes an airbag 31. The airbag 31 suspends the product tray 4 through nylon ropes. The airbag 31 filters high-frequency vibrations through gas compressibility. The airbag 31 has a multi-chamber structure, which includes a main air chamber and auxiliary air chambers. The auxiliary air chambers are distributed in an array surrounding the main air chamber. The main air chamber and the auxiliary air chambers are connected through one-way valves. The airbag 31 suspends the product tray 4 through a silica fiber braided belt 32, and a second compression spring 33 is provided at the connection between the silica fiber braided belt 32 and the airbag 31. Among them, the main air chamber is equivalent to a low-frequency filter, and the array of auxiliary air chambers surrounding the main air chamber performs high-frequency absorption. The main and auxiliary air chambers are connected through a channel with a one-way valve. The auxiliary air chambers are filled with porous sound-absorbing materials, and the materials are polyurethane foam particles or aerogels. The elastic hinge 22 is made of ethylene propylene diene monomer (EPDM) rubber, and its working temperature range is from -40°C to 80°C. The hinge allows the product tray 4 to have a displacement of ≤5 mm in the horizontal plane. In high-intensity vibration transportation scenarios, such as the transportation of aviation, heavy machinery, and military equipment, the damage caused by high-frequency vibrations to products is particularly significant. The design of the airbag 31, through its multi-chamber structure, especially the cooperation between the main air chamber and the auxiliary air chambers, effectively filters and absorbs high-frequency vibrations. The main air chamber is equivalent to a low-frequency filter, while the auxiliary air chambers perform high-frequency absorption. This structure can significantly reduce the vibrations transmitted to the product tray 4. The porous sound-absorbing materials filled in the auxiliary air chambers, such as polyurethane foam particles or aerogels, can further improve the sound absorption and shock absorption effects, reducing the impact and damage to the products. The suspension system using the silica fiber braided belt 32 and the second compression spring 33 can provide additional elasticity and stability between the airbag 31 and the product tray 4. The second compression spring 33 can further buffer the impact and prevent excessive displacement of the products during transportation. The elastic hinge 22 made of ethylene propylene diene monomer (EPDM) rubber has a wide working temperature range (-40°C to 80°C), which enables the suspension system to maintain stable and effective working performance under various climate conditions.

[0033] The working principle and working process of the present invention:

[0034] Hierarchical shock protection is achieved through the synergistic effect of the bottom shock-resistant part 1, the sidewall shock-absorbing part 2, and the top suspension part 3. When an external impact acts on the corrugated cardboard box, the bottom shock-resistant part 1 first absorbs the vertical impact energy through the support of the aluminum plate and the deformation of the corrugated structure. The non-Newtonian fluid has a sudden increase in viscosity under instantaneous impact to form a rigid protective layer; the lateral compression springs and EPDM rubber hinges of the sidewall shock-absorbing part 2 convert the horizontal vibration energy into heat energy dissipation through elastic deformation, and the symmetrically distributed spring groups suppress resonance and stabilize the box body; the multi-chamber airbag 31 of the top suspension part 3 filters the vibration spectrum through the cooperation of the main air chamber and the auxiliary air chamber. The silica fiber woven belt 32 and the second compression spring 33 dynamically adjust the displacement of the tray, supplemented by polyurethane foam particles to absorb high-frequency energy. Through the three-stage linkage of material deformation, energy conversion, and frequency-selective attenuation, the system adapts to different vibration intensities and spectra. While maintaining a lightweight design, it significantly reduces the risks of fatigue degradation of foam materials and interface peeling, ensuring all-round protection of products in high-strength transportation scenarios.

[0035] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Although the present invention has been disclosed as above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the above-disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modification, equivalent change, and modification made to the above embodiment based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A corrugated cardboard box with high strength earthquake resistance and shock absorption, characterized in that, It includes a bottom impact-resistant part, a sidewall shock-absorbing part, and a top suspension part. The bottom impact-resistant part and the top suspension part are connected by the sidewall shock-absorbing part. The bottom impact-resistant part, the sidewall shock-absorbing part, and the top suspension part form an integral corrugated cardboard box with hierarchical shock absorption.

2. The corrugated cardboard box with high strength earthquake resistance and shock absorption according to claim 1, wherein, The bottom impact-resistant part includes a honeycomb aluminum plate, a corrugated cardboard, and a non-Newtonian fluid bag. The honeycomb aluminum plate, the high-strength corrugated cardboard, and the non-Newtonian fluid bag are stacked in sequence from top to bottom.

3. The corrugated cardboard box with high strength earthquake resistance and shock absorption according to claim 2, characterized in that, The corrugated cardboard is of a wavy structure.

4. A corrugated cardboard box with high strength earthquake resistance and shock absorption according to claim 2, characterized in that, The non-Newtonian fluid bag is made of starch-based or silicone-based material, and its viscosity increases with the increase of impact acceleration. The non-Newtonian fluid bag remains in a soft state under static pressure.

5. A corrugated cardboard box with high strength earthquake resistance and shock absorption according to claim 1, characterized in that, The sidewall shock-absorbing part includes a first compression spring arranged horizontally. A product tray is arranged inside the integral corrugated cardboard box. The first compression spring is connected to the product tray through an elastic hinge. The first compression spring and the elastic hinge form a horizontal vibration energy dissipation structure.

6. A corrugated cardboard box with high strength earthquake resistance and shock absorption according to claim 5, characterized in that, The material of the elastic hinge is ethylene propylene diene monomer rubber.

7. A corrugated cardboard box with high strength earthquake resistance and shock absorption according to claim 5, characterized in that, The first compression spring and the elastic hinge are arranged in an array on the inner walls of the four sides of the integral corrugated cardboard box and are symmetrically distributed. 3 to 5 groups of the first compression spring and the elastic hinge are arranged on the inner wall of each box body.

8. A corrugated cardboard box with high strength seismic resistance and shock absorption according to claim 5, characterized in that, The top suspension part includes an airbag. The airbag suspends the product tray through a nylon rope. The airbag filters high-frequency vibration through gas compressibility.

9. The corrugated cardboard box with high strength earthquake resistance and shock absorption according to claim 8, characterized in that, The airbag is of a multi-chamber structure. The multi-chamber structure includes a main air chamber and auxiliary air chambers. The auxiliary air chambers are arranged in an array around the main air chamber. The main air chamber and the auxiliary air chambers are connected through one-way valves.

10. A corrugated cardboard box with high strength seismic and shock absorption according to claim 8, characterized in that, The airbag suspends the product tray through a silicone fiber braided belt, and a second compression spring is provided at the connection between the silicone fiber braided belt and the airbag.

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