Packaging box with buffer structure

Abstract

The invention relates to the technical field of packaging boxes, in particular to a packaging box with a buffer structure, which comprises an inner interlayer, a buffer layer, an outer interlayer, a buffer layer and a plurality of elastic supporting points, and is characterized in that the inner interlayer is used for dividing the inner space of the packaging box into a plurality of small spaces; the shell frame serves as a main bearing part of the packaging box, the shell frame is made of a high-strength material to enhance the structural integrity during stacking or transportation, and multiple reinforcing ribs are connected between the shell frames; the buffer cushion layer is installed between the shell frame and the inner wall, and the buffer cushion layer is made of an EVA foaming material; the sealing strip is located at the joint of the upper cover and the base, is of a double-layer structure and is composed of a waterproof adhesive tape and a hook-and-loop fastener. The inner partition layer is provided with a plurality of elastic supporting points, it can be ensured that contained objects are stably fixed, the partition layer is formed by splicing a plurality of detachable partition plates, adjustment can be conducted according to the actual size of the loaded objects, and the risk of damage caused by shaking and collision in the transportation process and the like is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging boxes, in particular to a packaging box with a buffer structure. Background Art

[0002] Goods and cargo will be subjected to greater forces due to bumps and vibrations during transportation or sales. Once these forces exceed the limit that the cargo can withstand, they will damage the cargo and cause economic losses. Adding a buffer between the force and the cargo to weaken the direct effect of the force on the cargo can greatly reduce the probability of cargo damage. At present, the popular treatment method on the market is to add buffers to the packaging of the goods, such as EPE, EPS, EPP, etc. These buffers can absorb most of the force and provide a good protection for the cargo. In addition to the three types mentioned above, other commonly used buffer materials in the packaging field include EPO, NEPS, paper trays and air column bags, etc.

[0003] The traditional way to cushion inside a packaging box is to rely solely on a soft foam filling layer to achieve the purpose of shock absorption. However, this method is prone to peeling loss at the contact parts and is difficult to work for a long time. The items are damaged due to shaking and collision in the packaging box during transportation, handling, and storage. In addition, due to the insufficient strength of the packaging box, the structure may be deformed and damaged due to external forces during stacking and transportation. In addition, due to the poor sealing performance of the packaging box, it is easy to leak liquid inside and the interior is easily affected by moisture, affecting the quality of the items. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a packaging box with a buffer structure, which solves the problems that items in the packaging box are easily shaken, damaged by collisions, have insufficient structural strength, and have poor sealing performance.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A packaging box with a buffer structure, comprising:

[0006] The internal partition is used to divide the internal space of the packaging box into multiple small spaces to reduce the movement and collision of items in the packaging box; the internal partition is provided with multiple elastic support points to ensure that the contents are stably fixed;

[0007] The outer shell frame is the main load-bearing part of the packaging box. The outer shell frame is made of high-strength materials to enhance the structural integrity during stacking or transportation. Multiple reinforcement ribs are connected between the outer shell frames to improve the overall rigidity, connection firmness and impact resistance. Rubber feet are set at the bottom to improve the anti-slip effect and shock resistance.

[0008] The cushion layer is installed between the outer shell frame and the inner wall to absorb and reduce external impact force; the cushion layer is made of EVA foam material;

[0009] The sealing strip is located at the junction of the upper cover and the base, achieving a reliable seal to provide additional protection while ensuring easy opening and closing; the sealing strip has a double-layer structure, consisting of a waterproof tape and Velcro.

[0010] One side edge of the cushion layer is seamlessly connected to the outer shell frame through a folded portion; and the thickness of the folded portion gradually becomes thinner along the edge; at the same time, a plurality of ventilation holes are arranged inside the cushion layer to promote internal and external air exchange and reduce internal humidity.

[0011] Preferably, the internal partition is formed by splicing together multiple detachable partitions.

[0012] Preferably, the edge of the buffer pad layer is bonded to the outer shell frame via a double-sided adhesive strip.

[0013] Preferably, the buffer layer contains wavy support columns.

[0014] Preferably, a layer of soft TPU protective film is embedded inside the outer shell frame.

[0015] Preferably, the sealing strip adopts an airbag-type retractable structure, and a silicone rubber layer is provided on the top to increase the friction coefficient and enhance the sealing performance.

[0016] Preferably, the outer shell frame is provided with ventilation holes around it and is equipped with a one-way pressure relief valve.

[0017] Working principle: The multiple elastic support points of the internal compartment can absorb and disperse part of the impact force through their own elastic deformation when the items are vibrated or collided, so as to reduce the impact force on the items; the EVA foam material used in the cushion layer has good elasticity and recovery. When encountering strong external force, the material will quickly compress and deform to absorb the impact force, and then expand and rebound to achieve double shock absorption. Its thickness is designed to gradually become thinner along the edge, so that when encountering a side impact, the edge can deform faster, dispersing the impact force to a larger area and reducing the force per unit area. When the thickness of the cushion layer changes, the internal wavy support column can keep the entire cushion layer evenly stressed, so that the impact force can be more effectively dispersed and absorbed in the cushion layer, preventing the items from being damaged due to excessive local force.

[0018] The outer shell frame is made of high-strength material with high strength and rigidity. It can withstand certain pressure and impact force. When stacking or transporting, it can prevent the packaging box from being deformed or damaged due to external pressure. Multiple reinforced ribs further enhance the rigidity of the outer shell frame, making the frame less likely to bend or break when subjected to external force, improving the overall connection firmness and impact resistance. The rubber feet at the bottom increase the friction with the contact surface, making the packaging box more stable. At the same time, it can absorb some of the vibration from the ground and improve the shock resistance. The edge of one side of the cushion layer is folded to seamlessly connect with the outer shell frame, and then bonded and connected by double-sided adhesive strips, so that the two form a whole and can work better together.

[0019] In the double-layer structure of the sealing strip, the waterproof tape can directly prevent liquid from entering the interior of the packaging box, playing a basic waterproof role. The Velcro makes it easy for users to open and close the packaging box, and can ensure that a certain tightening force is provided when it is closed. The airbag-type retractable structure automatically inflates when it is compressed, and can adjust its own state according to the deformation of the packaging box to maintain a tight sealing state. The silicone rubber layer on the top increases the friction coefficient and enhances the sealing performance, preventing the sealing from failing due to shaking and other reasons, and ensuring that the risk of leakage will not increase due to shaking. The air permeable holes opened around the outer shell frame cooperate with the one-way pressure relief valve. During the packaging process or when the internal humidity changes, when the internal pressure is greater than the external pressure, the one-way pressure relief valve opens to discharge the moisture generated inside; when the external environment is humid or there are other unfavorable factors, the one-way pressure relief valve closes to prevent external moisture and other harmful substances from entering the packaging box, thereby reducing the possibility of damage to the contents due to moisture and other reasons.

[0020] The present invention provides a packaging box with a buffer structure, which has the following beneficial effects:

[0021] 1. The present invention can ensure the stability and fixation of the contents by providing multiple elastic support points through the internal partition, and the concave and convex surface increases the friction between the adjacent parts and reduces the relative sliding. The partition is made of multiple detachable partitions, which can be adjusted according to the actual size of the load, reducing the risk of damage caused by shaking and collision during transportation. In addition, the cushion layer uses EVA foam material, which can quickly expand and rebound when encountering strong external forces to achieve dual shock absorption functions. Its thickness gradually becomes thinner along the edge, which can disperse the side impact energy more quickly. Ventilation holes are set inside to promote air exchange and reduce humidity. It also includes wavy support columns to maintain uniform force when the thickness changes, and more effectively distribute and absorb external forces.

[0022] 2. The present invention adopts high-strength materials through the outer shell frame to enhance the structural integrity during stacking or transportation, and is designed with multiple reinforced ribs to improve the overall rigidity, connection firmness and impact resistance. Rubber feet are arranged on the bottom to improve the anti-slip effect and shock resistance, and the overall structure is stable; and the edge of one side of the buffer cushion layer is folded to seamlessly connect with the outer shell frame, maintaining the aesthetic appearance while improving the tightness of the connection, and the edges are bonded and connected by double-sided adhesive strips, so that the two are tightly combined without gaps, thereby improving the efficiency of absorbing the impact force of side impact.

[0023] 3. The present invention adopts a double-layer structure through the sealing strip, which is composed of a waterproof tape and Velcro, which can effectively prevent liquid from entering the interior of the packaging box, and adopts an embedded design to tightly buckle into the designated slot to ensure a tight connection. It also adopts an airbag-type retractable structure, which automatically inflates under pressure to maintain a tight state. A silicone rubber layer is added on the top to improve the friction coefficient and sealing performance, ensuring reliable sealing while ensuring easy opening and closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A perspective view of the present invention;

[0025] Figure 2 It is an explosion schematic diagram of the present invention;

[0026] Figure 3 It is a schematic diagram of the internal structure of the base of the present invention;

[0027] Figure 4 It is a schematic diagram of the housing frame structure of the present invention;

[0028] Figure 5 It is a schematic diagram of the upper cover structure of the present invention;

[0029] Figure 6 is a cross-sectional view of the base of the present invention;

[0030] Figure 7 It is a cross-sectional view of the buffer layer of the present invention.

[0031] Among them, 1. Base; 2. Upper cover; 3. Outer shell frame; 4. Reinforced ribs; 5. Internal partition; 6. Partition; 7. Folding part; 8. Rubber feet; 9. Sealing strip; 10. Buffer layer; 11. Wave-shaped support column; 12. Soft TPU protective film; 13. One-way pressure relief valve. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example:

[0034] like Figure 1-7 As shown, an embodiment of the present invention provides a packaging box with a buffer structure, comprising:

[0035] The internal partition 5 is used to divide the internal space of the packaging box into multiple small spaces to reduce the movement and collision of items in the packaging box; the internal partition 5 is provided with multiple elastic support points to ensure that the contents are stably fixed, and is formed into a complex shape through molding to more effectively distribute the force, and has a concave and convex surface to increase the friction between adjacent parts and reduce relative sliding. The internal partition 5 is made of flexible material, and the interior of the packaging box can be divided into sections according to set requirements, so that corresponding items can be placed in each small area. These sub-cavities are adjacent to each other and interconnected in a certain way to achieve the air exchange function without being limited to hindering the flow of gas, and multiple support points are set on the partition to ensure that the objects placed therein can be stably fixed. When the contents are placed in each unit area, the elastic support points can fit closely to the outer contour of the object and provide buffering and resetting force when impacted or moved to reduce collision damage and avoid damage to the object caused by shaking;

[0036] The outer shell frame 3, as the main load-bearing part of the packaging box, provides an external protective barrier. The outer shell frame 2 is made of high-strength material to enhance the structural integrity during stacking or transportation, and multiple reinforcement ribs 4 are connected between the outer shell frames 2 to improve the overall rigidity, connection firmness and impact resistance, and rubber feet 8 are provided at the bottom to improve the anti-slip effect and shock resistance;

[0037] The cushion layer 10 is installed between the outer shell frame 3 and the inner wall to absorb and reduce external impact. The cushion layer 10 is made of EVA foam material, which can quickly expand and rebound when encountering strong external forces to achieve dual shock absorption functions. The special embossing process also increases the thickness and softness of the material to adapt to goods of different specifications. The cushion layer 10 can reduce and resolve the mechanical energy invading from the outside by relying on the unique characteristics of the material, and after the compression state, it can expand again to complete the dual shock absorption task. In addition, the frill process is adopted along the edge area to form a continuous and complete connection interface to effectively close the entire internal environment to prevent foreign matter from flowing out. At the same time, the through-hole structure designed in the cushion layer allows air to be exchanged between the inside and the outside to reduce the humidity of the box and maintain a dry atmosphere, which is conducive to long-term preservation of goods from moisture damage.

[0038] The sealing strip 9 is located at the junction of the upper cover 2 and the base 1, achieving reliable sealing to provide additional protection while ensuring easy opening and closing; the sealing strip 9 is a double-layer structure, consisting of a waterproof tape and a Velcro, the two parts are tightly combined into an integral component and cleverly embedded in the reserved gap to achieve a precise bayonet docking form to ensure that the interface is tightly closed and prevent moisture and other harmful substances from leaking. On the one hand, it can effectively prevent liquid from entering the interior of the box, and on the other hand, it is convenient for users to easily disassemble and assemble, and the embedded design enables it to be tightly buckled into the designated slot to ensure a tight connection.

[0039] One side edge of the cushion layer 10 is seamlessly connected to the outer shell frame 3 through the folding portion 7, which not only maintains the aesthetic appearance but also improves the tightness of the connection; and the thickness of the folding portion 7 gradually becomes thinner along the edge to ensure that energy can be dispersed more quickly when encountering a side impact; at the same time, a number of ventilation holes are arranged inside the cushion layer 10 to promote internal and external air exchange and reduce internal humidity.

[0040] In a specific embodiment, the internal compartment 5 is made up of multiple detachable partitions 6, which are connected by plug-in bayonet connections. Users can adjust the splicing position and quantity according to the actual size of the load to more accurately divide the small space and optimize the placement of items, further reducing movement and collision.

[0041] In a specific embodiment, the edge of the buffer layer 10 is bonded to the outer shell frame 3 by double-sided adhesive strips, so that the two are tightly combined without gaps, which greatly improves the efficiency of absorbing impact force during side collisions. First, the edge of the buffer layer 10 is pre-folded by mechanical equipment and then precisely matched with the part close to the frame. Finally, double-sided adhesive strips are selected to firmly form a community with the two. The buffer material is bonded together to become an integral part of the frame, thereby enhancing the ability to absorb external vibrations to achieve the expected protective effect.

[0042] In a specific embodiment, the cushion layer 10 includes wavy support columns 11 therein, so that even when the thickness of the entire cushion layer 10 changes, the force can still be uniformly distributed and absorbed, thereby more effectively distributing and absorbing external forces and protecting the items in the package from damage.

[0043] In a specific embodiment, a soft TPU protective film 12 is embedded inside the outer shell frame 3 , which can adapt to different pressure conditions as the outer wall deforms, and provides a second layer of buffering protection for the buffer layer 10 while preventing puncture by sharp objects.

[0044] In a specific embodiment, the sealing strip 9 adopts an airbag-type retractable structure, which will automatically inflate and replenish air to maintain a tight state when compressed. At the same time, a silicone rubber layer is provided on the top to increase the friction coefficient and enhance the sealing performance.

[0045] In a specific embodiment, the outer shell frame 3 is provided with ventilation holes around it and is equipped with a one-way pressure relief valve 13, which can effectively remove moisture that may be generated during the packaging process without allowing the external environment to directly contact the objects in the package, thereby reducing the possibility of damage to the contents.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A packaging box with a buffer structure, characterized in that: include: The internal partition (5) is used to divide the internal space of the packaging box into a plurality of small spaces to reduce the movement and collision of items in the packaging box; the internal partition (5) is provided with a plurality of elastic support points to ensure that the contents are stably fixed; The outer shell frame (3) is the main load-bearing part of the packaging box. The outer shell frame (2) is made of high-strength material to enhance the structural integrity during stacking or transportation. Multiple reinforcement ribs (4) are connected between the outer shell frames (2) to enhance the overall rigidity, connection firmness and impact resistance. Rubber feet (8) are provided at the bottom to enhance the anti-slip effect and shock resistance. A cushion layer (10) is installed between the outer shell frame (3) and the inner wall, and is used to absorb and reduce external impact force; the cushion layer (10) is made of EVA foam material; The sealing strip (9) is located at the junction of the upper cover (2) and the base (1), achieving reliable sealing to provide additional protection while ensuring easy opening and closing; the sealing strip (9) is a double-layer structure, consisting of a waterproof tape and a Velcro. One side edge of the cushion layer (10) is seamlessly connected to the outer shell frame (3) via a folded portion (7); and the thickness of the folded portion (7) gradually becomes thinner along the edge; at the same time, a plurality of ventilation holes are provided inside the cushion layer (10) to promote internal and external air exchange and reduce internal humidity.

2. A packaging box with a buffer structure according to claim 1, characterized in that: The internal partition (5) is formed by splicing together a plurality of detachable partitions (6).

3. The packaging box with a buffer structure according to claim 1, characterized in that: The edge of the buffer cushion layer (10) is bonded to the outer shell frame (3) via a double-sided adhesive strip.

4. The packaging box with a buffer structure according to claim 1, characterized in that: The buffer layer (10) contains wavy support columns (11) inside.

5. The packaging box with a buffer structure according to claim 1, characterized in that: A layer of soft TPU protective film (12) is embedded inside the outer shell frame (3).

6. The packaging box with a buffer structure according to claim 1, characterized in that: The sealing strip (9) adopts an airbag-type retractable structure, and a silicone rubber layer is arranged on the top to increase the friction coefficient and enhance the sealing performance.

7. The packaging box with a buffer structure according to claim 1, characterized in that: The outer shell frame (3) is provided with ventilation holes around its periphery and is equipped with a one-way pressure relief valve (13).

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