A laminated structure of a high-pressure-resistant composite foam packaging box

Abstract

The utility model relates to packing box technical field, concretely relates to a kind of laminated structure of high pressure-resistant composite foam packing box, including foam box body, foam box body is composed of the buffer inner layer being arranged in inner layer and the protective outer layer being arranged in outer layer, buffer inner layer is provided with reinforcing layer between protective outer layer, reinforcing layer is provided with pressure-resistant intermediate layer between protective outer layer;Annular sealing groove in rectangular ring shape is provided on the top surface of foam box body, the top of foam box body is provided with sealing top cover, the bottom surface of sealing top cover is fixedly installed with rectangular ring shape rectangular pressing frame, rectangular pressing frame is connected with annular sealing groove, cutting gap is provided at the side edge part of the side of foam box body and sealing top cover mutually close.The utility model effectively protects fragile, valuable articles, with better sealing and pressure protection effect.

Description

Technical Field

[0001] This utility model relates to the field of packaging box technology, specifically to a laminated structure of a high-compression-resistant composite foam packaging box. Background Technology

[0002] With the rapid development of the logistics and transportation industry, the performance requirements for packaging boxes are becoming increasingly stringent. In particular, for the transportation of fragile and valuable items, packaging boxes need to have good compression resistance to prevent damage to the items due to compression during transportation. Among these, foam packaging boxes are the most common type, as they have good cushioning and protective properties.

[0003] The invention patent with authorization announcement number CN112224599A discloses a foam packaging box, including box body side panels, connecting side panels, box lid, box bottom, rotating rod, support unit, and partition plate. The box body side panels are arranged front and back opposite each other, and connecting side panels are arranged left and right opposite each other between the box body side panels. The box lid is provided at the upper end of the connecting side panel on the right side of the box body side panel, and the box bottom is provided at the lower end of the connecting side panel on the left side of the box body side panel. The box body side panels and connecting side panels, as well as the connecting side panels and the box lid and box bottom, are all connected by rotating rods. Support units are provided between the box body side panels and connecting side panels, and partition plates are provided between the box body side panels and connecting side panels. This invention can solve the problems existing in the use of ordinary foam packaging boxes: the space cost of storing foam packaging boxes is high because foam packaging boxes cannot be folded; the procurement cost of foam packaging boxes for users is high; and the utilization rate of foam packaging boxes is low.

[0004] While this technical solution has its advantages, most current foam packaging boxes still have some shortcomings in use. For example, most common foam packaging boxes are made of a single foam material, which, although providing some cushioning performance, has limited compressive strength and cannot meet the transportation needs of some special items. Some improved packaging boxes increase material thickness to enhance compressive strength, but this not only increases material costs and box weight but also occupies more transportation space and is detrimental to the environment. Therefore, we propose a laminated structure for a high-compression-strength composite foam packaging box. Utility Model Content

[0005] The purpose of this invention is to provide a laminated structure for a high-compression-resistant composite foam packaging box to address the deficiencies mentioned in the background art.

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

[0007] A laminated structure for a high-compression-resistant composite foam packaging box includes a foam box body, which is composed of an inner buffer layer and an outer protective layer. A reinforcing layer is provided between the inner buffer layer and the outer protective layer, and a compression-resistant intermediate layer is provided between the reinforcing layer and the outer protective layer. A rectangular annular sealing groove is provided on the top surface of the foam box body, and a sealing top cover is provided on the top of the foam box body. A rectangular ring-shaped rectangular clamping frame is fixedly installed on the bottom surface of the sealing top cover, and the rectangular clamping frame is engaged with the annular sealing groove.

[0008] Preferably, the dimensions of the rectangular pressing frame are adapted to the dimensions of the annular sealing groove, and the lower projection of the sealing top cover coincides with the lower projection of the foam box.

[0009] This feature makes it easier for the rectangular clamping frame to snap into the annular sealing groove, while also ensuring that the surface of the sealing top cover and the foam box are relatively flush and do not protrude too much.

[0010] Preferably, the foam box is provided with a storage chamber with its top connected to the outside, and the storage chamber is used for storing items.

[0011] Preferably, a bottom wear-resistant pad is fixedly installed at the bottom of the foam box, and the top of the bottom wear-resistant pad extends to the four sides of the foam box.

[0012] Preferably, a cutting notch is provided at the side edge of the foam box and the sealing top cover that are close to each other, and the cutting notch is set to be concave at 30°~45°.

[0013] The notch in this design allows for the subsequent use of a knife to cut away the tape adhering between the foam box and the sealing top cover.

[0014] Preferably, the outer wall of the annular sealing groove is provided with a plurality of drainage holes that communicate with the outside, and the drainage holes are inclined downward at 30° to 60°.

[0015] This feature ensures that even if water enters the annular sealing groove, it can still drain out through the drain hole.

[0016] Preferably, a water-swellable rubber strip is embedded in the bottom wall of the annular sealing groove, and the water-swellable rubber strip is arranged along the annular path direction of the annular sealing groove;

[0017] This feature utilizes water-swellable rubber strips to achieve a further sealing effect.

[0018] Preferably, the thickness of the reinforcing layer is between 0.5 and 1.5 mm, the thickness of the compressive strength intermediate layer is between 0.1 and 0.3 mm, and the thickness of the protective outer layer is between 1 mm and 3 mm.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This utility model achieves complementary advantages of multiple material properties by setting up a laminated structure composed of a buffer inner layer, a reinforcing layer, a pressure-resistant intermediate layer and a protective outer layer. The buffer inner layer provides a good buffering effect, the reinforcing layer and the pressure-resistant intermediate layer greatly improve the pressure resistance, and the protective outer layer enhances the overall protective performance, thus effectively protecting fragile and valuable items and meeting the transportation needs of special items.

[0021] 2. This utility model optimizes the structural design of the foam box and the sealed top cover, adopts a rectangular pressing frame and an annular sealing groove for interlocking, and sets water-swellable rubber strips, drainage holes, etc., to achieve good sealing and waterproof performance of the packaging box, prevent the intrusion of external moisture during transportation, and achieve the effect of ensuring the safety and cleanliness of the contents.

[0022] 3. This utility model achieves wear-resistant protection for the bottom of the packaging box by setting a bottom wear-resistant pad layer and cutting notches, which facilitates the cutting and separation of the tape. At the same time, while ensuring high compressive strength, it reasonably controls the thickness of each layer, reduces material costs and packaging box weight, and achieves the effect of improving the practicality, economy and environmental protection of the packaging box. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 This is a cross-sectional view of the foam box body of this utility model;

[0026] The meanings of the labels in the diagram are as follows:

[0027] 1. Foam box body; 10. Internal storage chamber; 11. Bottom wear-resistant padding layer; 12. Annular sealing groove; 13. Drain hole; 14. Water-swellable rubber strip; 15. Inner buffer layer; 16. Reinforcing layer; 17. Compression-resistant intermediate layer; 18. Protective outer layer; 19. Cut notch;

[0028] 2. Sealed top cover; 20. Rectangular clamping frame. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-3 This utility model provides a technical solution: a laminated structure of a high-compression-resistant composite foam packaging box, including a foam box body 1. The foam box body 1 is composed of an inner buffer layer 15 and an outer protective layer 18. A reinforcing layer 16 is provided between the inner buffer layer 15 and the outer protective layer 18, and a compression-resistant intermediate layer 17 is provided between the reinforcing layer 16 and the outer protective layer 18. This allows the different functional material layers to work together. The inner buffer layer 15 absorbs impact and protects the items, the reinforcing layer 16 and the compression-resistant intermediate layer 17 enhance the compression resistance, and the outer protective layer 18 resists external damage, thereby improving the overall performance of the packaging box and meeting the stringent requirements for transporting special items.

[0031] like Figure 1 and Figure 2 As shown, a rectangular ring-shaped sealing groove 12 is provided on the top surface of the foam box 1. A sealing top cover 2 is provided on the top of the foam box 1. A rectangular ring-shaped rectangular pressing frame 20 is fixedly installed on the bottom surface of the sealing top cover 2. The rectangular pressing frame 20 and the ring-shaped sealing groove 12 are engaged. The size of the rectangular pressing frame 20 is adapted to the size of the ring-shaped sealing groove 12. The lower projection of the sealing top cover 2 coincides with the lower projection of the foam box 1, so that the rectangular pressing frame 20 can be smoothly inserted into the ring-shaped sealing groove 12. At the same time, it ensures that the sealing top cover 2 and the surface of the foam box 1 are flush. This not only improves the flatness of the packaging box appearance, but also reduces shaking when stacked and stored, and improves space utilization and stability.

[0032] like Figure 1 As shown, the foam box 1 has a storage chamber 10 with its top connected to the outside. The storage chamber 10 is used for storing items, giving the foam box 1 a dedicated space for storing items, standardizing the placement of items, facilitating loading and unloading of items, and providing a stable storage environment for the items inside.

[0033] like Figure 1 As shown, a bottom wear-resistant pad 11 is fixedly installed on the bottom of the foam box 1. The top of the bottom wear-resistant pad 11 extends to the four sides of the foam box 1, so that the bottom and sides of the foam box 1 can be effectively protected during placement, handling and stacking, reducing friction and wear, extending the service life of the packaging box and reducing the cost of use.

[0034] like Figure 1 and Figure 2 As shown, a cutting notch 19 is provided on the side of the foam box 1 and the sealed top cover 2 that are close to each other. The cutting notch 19 is set inward at a 30°~45° angle, which makes it easier for operators to use a knife to cut the tape along the cutting notch 19 when opening the packaging box, avoiding damage to the box due to blind cutting, and improving the convenience of opening the box and the integrity of the box.

[0035] like Figure 2 As shown, the outer wall of the annular sealing groove 12 is provided with multiple drainage holes 13 that communicate with the outside. The drainage holes 13 are set at a downward inclination of 30° to 60°, so that even if water enters the annular sealing groove 12, it can be discharged through the drainage holes 13 under the action of gravity, avoiding water accumulation and damage to the sealing structure, and ensuring the airtightness of the packaging box and the dry environment of the contents.

[0036] like Figure 2 As shown, a water-swellable rubber strip 14 is embedded in the bottom wall of the annular sealing groove 12. The water-swellable rubber strip 14 is arranged along the annular path of the annular sealing groove 12, so that when water comes into contact with the rubber strip, it expands and fills the gap, further enhancing the sealing effect between the sealing top cover 2 and the foam box 1, effectively preventing external moisture, dust and other substances from entering the packaging box and better protecting the contents.

[0037] In this embodiment, the thickness of the reinforcing layer 16 is between 0.5 and 1.5 mm, the thickness of the compression-resistant intermediate layer 17 is between 0.1 and 0.3 mm, and the thickness of the protective outer layer 18 is between 1 mm and 3 mm. This ensures that each layer performs its function while maintaining the overall reasonable thickness of the packaging box. It achieves high compression resistance while avoiding excessive use of materials, reducing material costs, and lightening the weight of the packaging box, which is more in line with the environmental protection and economic needs of logistics transportation.

[0038] It is worth noting that the water-swellable rubber strip 14 can be made of natural rubber or synthetic rubber and water-absorbing resin composite material. It is made of natural rubber or synthetic rubber such as chloroprene rubber and nitrile rubber as the matrix and high water-absorbing resin is added. Natural rubber has good elasticity and processing performance, while synthetic rubber performs well in terms of aging resistance and chemical resistance. The high water-absorbing resin can quickly absorb a large amount of water and swell when it comes into contact with water. The combination of the two makes the rubber strip have both the elasticity and flexibility of rubber, which can tightly fill gaps, and can generate expansion pressure when it comes into contact with water, thereby enhancing the sealing effect. It is suitable for waterproof sealing of foam packaging boxes.

[0039] It is worth noting that the inner cushioning layer 15 can be made of polyurethane foam, which has good elasticity and energy absorption properties, effectively absorbing the impact force generated during transportation and providing cushioning protection for the internal items; the reinforcing layer 16 can be made of glass fiber reinforced polypropylene composite material, which has high strength and high rigidity, effectively enhancing the overall structural strength of the packaging box; the pressure-resistant intermediate layer 17 can be made of honeycomb-structured polystyrene foam, which has excellent mechanical properties, ensuring lightweight materials while withstanding greater pressure; the protective outer layer 18 can be made of high-density polyethylene, which has good wear resistance, corrosion resistance, and water resistance, protecting the internal layers from external environmental factors and resisting external mechanical damage to a certain extent, further improving the pressure resistance and service life of the packaging box.

[0040] When using the laminated structure of the high-compression-resistant composite foam packaging box of this utility model, first place the items in the storage chamber 10 of the foam box body 1, and arrange them in a standardized manner to ensure the stability of the items. Then, align the rectangular pressing frame 20 of the sealing top cover 2 with the annular sealing groove 12 on the top surface of the foam box body 1. Since the two are of compatible sizes, they can be smoothly snapped together to achieve a tight fit between the sealing top cover 2 and the foam box body 1. At the same time, the water-swellable rubber strip 14 expands when exposed to water to further enhance the sealing effect.

[0041] During handling and stacking, the bottom wear-resistant pad 11 provides wear-resistant protection for the bottom and sides of the foam box 1. If moisture enters the annular sealing groove 12 during transportation, the downward-sloping drainage hole 13 will allow the accumulated water to drain smoothly, maintaining the stability of the sealing structure.

[0042] Upon arrival at the destination, the operator can use the cutting notch 19 on the side of the foam box 1 and the sealed top cover 2 to cut the tape along the concave angle with a knife, thus easily opening the packaging box and taking out the contents.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A laminated structure of a high pressure resistant composite type foam packaging box comprising a foam box body (1), characterized in that: The foam box (1) is composed of an inner buffer layer (15) and an outer protective layer (18). A reinforcing layer (16) is provided between the inner buffer layer (15) and the outer protective layer (18), and a pressure-resistant intermediate layer (17) is provided between the reinforcing layer (16) and the outer protective layer (18). A rectangular ring-shaped sealing groove (12) is provided on the top surface of the foam box (1), and a sealing top cover (2) is provided on the top of the foam box (1). A rectangular ring-shaped rectangular pressing frame (20) is fixedly installed on the bottom surface of the sealing top cover (2), and the rectangular pressing frame (20) is engaged with the ring-shaped sealing groove (12).

2. The laminated structure of the high-pressure-resistant composite type foam packaging box according to claim 1, characterized by: The dimensions of the rectangular pressing frame (20) are adapted to the dimensions of the annular sealing groove (12), and the lower projection of the sealing top cover (2) coincides with the lower projection of the foam box (1).

3. The laminated structure of the high pressure resistant composite type foam packaging box according to claim 1, characterized in that: The foam box (1) is provided with a storage chamber (10) with its top connected to the outside. The storage chamber (10) is used for storing items.

4. The laminated structure of the high-pressure-resistant composite foam packaging box according to claim 1, characterized in that: The bottom of the foam box (1) is fixedly installed with a bottom wear-resistant pad (11), and the top of the bottom wear-resistant pad (11) extends to the four sides of the foam box (1).

5. The laminated structure of the high pressure resistant composite type foam packaging box according to claim 1, characterized in that: A cutting notch (19) is provided on the side of the foam box (1) and the sealing top cover (2) that are close to each other. The cutting notch (19) is set inward at a 30°~45° angle.

6. The laminated structure of a high-pressure-resistant composite foam packaging box according to claim 1, characterized in that: The outer wall of the annular sealing groove (12) is provided with a plurality of drainage holes (13) that are connected to the outside. The drainage holes (13) are set at a downward inclination of 30° to 60°.

7. The laminated structure of a high-pressure-resistant composite foam packaging box according to claim 1, characterized in that: The bottom wall of the annular sealing groove (12) is embedded with a water-swellable rubber strip (14), which is arranged along the annular path of the annular sealing groove (12).

8. The laminated structure of the high-pressure-resistant composite foam packaging box according to claim 1, characterized in that: The thickness of the reinforcing layer (16) is between 0.5 and 1.5 mm, the thickness of the compressive intermediate layer (17) is between 0.1 and 0.3 mm, and the thickness of the protective outer layer (18) is between 1 mm and 3 mm.

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