A high interlayer bonding strength corrugated paperboard

Abstract

The utility model relates to the technical field of packing material, concretely to a high interlayer bonding strength corrugated paperboard, including two face layers of parallel arrangement and be located between two face layers corrugated core paper, the end of corrugated core paper respectively with two face layers insert joint cooperation, be equipped with a plurality of horizontal support plates between corrugated core paper. The utility model discloses through the insert joint cooperation of corrugated core paper end and face layer, can effectively enhance the connection firmness between face layer and corrugated core paper, reduce the possibility of interlayer separation, and the two ends of the several horizontal support plates fixed with the outer wall of corrugated core paper can support corrugated core paper in the horizontal direction, and the stability of the overall structure is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of packaging materials technology, specifically to a corrugated cardboard with high interlayer bonding strength. Background Technology

[0002] In the packaging industry, corrugated cardboard is widely used for packaging various items due to its good cushioning properties and certain strength. With the rapid development of modern logistics and the packaging industry, the performance requirements for corrugated cardboard are becoming increasingly stringent, especially in terms of interlayer bond strength.

[0003] Existing corrugated cardboard typically consists of a face layer and a corrugated core. However, traditional corrugated cardboard has some shortcomings in use. Firstly, the connection between the face layer and the core is relatively simple, often secured with hot melt adhesive. There is a lack of structural bonding between the two, and the force is borne solely by the hot melt adhesive, resulting in low interlayer bond strength. Under external force, the face layer is prone to separating from the core, affecting the stability and reliability of the packaging. Secondly, the overall structural support of existing corrugated cardboard is limited. Under significant pressure or impact, it is prone to deformation, leading to poor packaging performance and potentially damaging the contents.

[0004] In view of this, we propose a corrugated cardboard with high interlayer bonding strength. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a corrugated cardboard with high interlayer bonding strength.

[0006] The technical solution of this utility model is: A corrugated cardboard with high interlayer bonding strength includes two parallel surface layers and a corrugated core paper disposed between the two surface layers. The ends of the corrugated core paper are respectively inserted into the two surface layers. A plurality of transverse support plates are provided between the corrugated core papers. Both ends of the transverse support plates are fixedly connected to the outer wall of the corrugated core paper. Support blocks are installed at the contact points between the surface layers and the ends of the corrugated core paper. The outer wall of the support block is tightly fitted to the outer wall of the end of the corrugated core paper.

[0007] As a preferred technical solution, the surface layer includes an outer layer located on the outside, a support layer provided inside the outer layer, an inner layer provided inside the support layer, and a support block installed on the inner wall of the inner layer.

[0008] As a preferred technical solution, the outer layer is provided with a number of horizontally arranged transverse support bars and a number of vertically parallel longitudinal support bars.

[0009] As a preferred technical solution, several transverse support bars located on the same plane are welded and fixed to several longitudinal support bars.

[0010] As a preferred technical solution, the corrugated core paper includes two supporting paper layers located on the inner and outer surfaces, and a filling layer filled between the two supporting paper layers.

[0011] As a preferred technical solution, a plurality of vertically parallel vertical support plates are provided between the two supporting paper layers, and the two ends of the vertical support plates are respectively fixed to the two supporting paper layers.

[0012] As a preferred technical solution, the transverse support plate is provided with a number of transverse tie bars, and a number of parallel diagonal tie bars are welded between two adjacent transverse tie bars, and the diagonal tie bars are inclined.

[0013] As a preferred technical solution, each of the two outer walls of the support block has a horizontally arranged insert block integrally formed, and the insert block is inserted and connected to the inner layer.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This invention effectively enhances the connection between the surface layer and the corrugated core paper by interlocking the ends of the corrugated core paper with the surface layer, reducing the possibility of interlayer separation. The several transverse support plates, with their ends fixed to the outer wall of the corrugated core paper, can provide support for the corrugated core paper in the transverse direction, enhancing the stability of the overall structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 In this utility model Figure 1 Enlarged view of point A in the image; Figure 3 This is a schematic diagram of the internal structure of the transverse support plate in this utility model; Figure 4 This is a schematic diagram of the support block in this utility model; The meanings of the labels in the diagram are as follows: 1. Surface layer; 10. Outer layer; 11. Horizontal support strip; 12. Vertical support strip; 13. Support layer; 14. Inner layer; 15. Support block; 150. Insert block; 2. Corrugated core paper; 20. End; 21. Support paper layer; 22. Filling layer; 23. Vertical support plate; 3. Horizontal support plate; 31. Horizontal tie bar; 32. Diagonal tie bar. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1-4 This utility model provides a technical solution: A type of corrugated cardboard with high interlayer bonding strength includes two parallel face layers 1 and a corrugated core paper 2 disposed between the two face layers 1. The ends 20 of the corrugated core paper 2 are respectively inserted into the two face layers 1. Several transverse support plates 3 are provided between the corrugated core paper 2, and both ends of the transverse support plates 3 are fixedly connected to the outer wall of the corrugated core paper 2. Support blocks 15 are installed at the contact points between the face layers 1 and the ends 20 of the corrugated core paper 2, and the outer walls of the support blocks 15 are tightly fitted to the outer walls of the ends 20 of the corrugated core paper 2. The insertion and engagement of the ends 20 of the corrugated core paper 2 with the face layers 1 effectively enhances the bonding strength between the face layers 1 and the corrugated core paper 2, reducing the possibility of interlayer separation; while the several transverse support plates 3, with both ends fixed to the outer walls of the corrugated core paper 2, can provide support for the corrugated core paper 2 in the transverse direction, enhancing the stability of the overall structure.

[0018] In a preferred embodiment, the surface layer 1 includes an outer layer 10 located on the outside, a support layer 13 disposed inside the outer layer 10, an inner layer 14 disposed inside the support layer 13, and a support block 15 mounted on the inner wall of the inner layer 14. This layered structure gives the surface layer 1 superior mechanical properties. The outer layer 10 provides protection and initial load-bearing capacity, the support layer 13 further enhances the support strength of the surface layer 1, and the inner layer 14, in conjunction with the support block 15, provides a more stable connection foundation for the corrugated core paper 2.

[0019] In a preferred embodiment, the outer layer 10 has a plurality of horizontally arranged transverse support bars 11 and a plurality of vertically arranged parallel longitudinal support bars 12, forming a crisscrossing support network. This structure can provide support to the surface layer 1 in both directions, effectively dispersing externally applied pressure and reducing the deformation of the surface layer 1.

[0020] In a preferred embodiment, several transverse support bars 11 and several longitudinal support bars 12 located on the same plane are welded and fixed together. This connection method forms a robust overall frame structure among the support bars. The welded connection has high strength, ensuring that the transverse and longitudinal support bars 12 will not undergo relative displacement when subjected to external forces, thereby more effectively fulfilling their supporting function.

[0021] As a preferred embodiment, the corrugated core paper 2 includes two supporting paper layers 21 located on the inner and outer surfaces, and a filling layer 22 filled between the two supporting paper layers 21. This structural design allows the corrugated core paper 2 to have a certain strength while further improving its mechanical properties through the filling layer 22.

[0022] In a preferred embodiment, a plurality of vertically parallel support plates 23 are provided between the two support paper layers 21, with each end of the vertical support plate 23 fixed to one of the two support paper layers 21. This structure creates multiple support points in the vertical direction of the corrugated core paper 2. The vertical support plates 23 can effectively enhance the compressive strength of the corrugated core paper 2 in the vertical direction and reduce the deformation of the support paper layers 21 under vertical pressure.

[0023] In a preferred embodiment, the transverse support plate 3 is provided with a plurality of transverse tie rods 31, and a plurality of parallel diagonal tie rods 32 are welded between two adjacent transverse tie rods 31. The diagonal tie rods 32 are inclined. The transverse tie rods 31 provide transverse support force, while the diagonal tie rods 32, by being inclined, can effectively transmit and disperse forces in various directions, thereby enhancing the overall strength and deformation resistance of the transverse support plate 3.

[0024] As a preferred embodiment, each of the two outer walls of the support block 15 has a horizontally arranged insert 150 integrally formed thereon, and the insert 150 is inserted into and connected to the inner layer 14. This insertion structure makes the connection between the support block 15 and the inner layer 14 tighter and more secure.

[0025] In use, the corrugated cardboard of this invention features a strong interlayer bonding structure. The outer layer 10 of the face layer 1 forms a frame through longitudinally and transversely welded support strips, dispersing pressure and initially bearing load. The support layer 13 further enhances strength. The inner layer 14, in conjunction with the support block 15, provides a connection foundation for the corrugated core paper 2. The ends 20 of the corrugated core paper 2 are inserted into the face layer 1, reducing interlayer separation. Its own support paper layer 21, filling layer 22, and vertical support plate 23 absorb energy and enhance compressive strength. The transverse support plate 3 between the corrugated core paper 2, through a truss structure composed of transverse and diagonal tie rods 32, supports the corrugated core paper 2 and disperses force. The support block 15 is inserted into the inner layer 14 through inserts 150, fitting snugly against the ends 20 of the corrugated core paper 2, reinforcing the connection, ultimately making the cardboard less prone to delamination and better able to withstand loads.

[0026] 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 corrugated cardboard with high interlayer bonding strength, characterized in that: It includes two parallel surface layers (1) and a corrugated core paper (2) between the two surface layers (1). The ends (20) of the corrugated core paper (2) are respectively inserted into the two surface layers (1). Several transverse support plates (3) are provided between the corrugated core paper (2). Both ends of the transverse support plates (3) are fixedly connected to the outer wall of the corrugated core paper (2). A support block (15) is installed at the contact point between the surface layer (1) and the end (20) of the corrugated core paper (2). The outer wall of the support block (15) is tightly fitted to the outer wall of the end (20) of the corrugated core paper (2).

2. The corrugated cardboard with interlayer bonding strength as described in claim 1, characterized in that: The surface layer (1) includes an outer layer (10) located on the outside, a support layer (13) is provided inside the outer layer (10), an inner layer (14) is provided inside the support layer (13), and a support block (15) is installed on the inner wall of the inner layer (14).

3. The corrugated cardboard with interlayer bonding strength as described in claim 2, characterized in that: The outer layer (10) is provided with a number of horizontally arranged transverse support bars (11) and a number of vertically arranged parallel longitudinal support bars (12).

4. The corrugated cardboard with interlayer bonding strength as described in claim 3, characterized in that: Several transverse support bars (11) located on the same plane are welded and fixed to several longitudinal support bars (12).

5. The corrugated cardboard with interlayer bonding strength as described in claim 4, characterized in that: The corrugated core paper (2) includes two supporting paper layers (21) located on the inner and outer surfaces, and a filling layer (22) filled between the two supporting paper layers (21).

6. The corrugated cardboard with interlayer bonding strength as described in claim 5, characterized in that: A plurality of vertically parallel vertical support plates (23) are provided between the two support paper layers (21), and the two ends of the vertical support plates (23) are respectively fixed to the two support paper layers (21).

7. The corrugated cardboard with interlayer bonding strength as described in claim 6, characterized in that: The transverse support plate (3) is provided with a number of transverse tie bars (31), and a number of parallel diagonal tie bars (32) are welded between two adjacent transverse tie bars (31), and the diagonal tie bars (32) are inclined.

8. The corrugated cardboard with interlayer bonding strength as described in claim 7, characterized in that: The outer walls on both sides of the support block (15) are integrally formed with a horizontally arranged insert (150), and the insert (150) is inserted and connected to the inner layer (14).

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