Low-gram-weight light-weight multi-layer composite corrugated board

Abstract

The utility model relates to the technical field of corrugated boards, in particular to a low-gram-weight light-weight multi-layer composite corrugated board which comprises a composite corrugated board body, and protection corner sleeves are fixedly connected to the four corners of the composite corrugated board body. The composite corrugated board body is sequentially composed of surface paper, a first buffer layer, middle partition paper, a second buffer layer and bottom paper from top to bottom, and the inner side of the first buffer layer and the inner side of the second buffer layer are fixedly connected with a first paper core board and a second paper core board respectively. The four corners of the composite corrugated board body can be protected, the design structure is compact, the requirements for low gram weight and light weight can be met, meanwhile, the whole composite corrugated board body is reinforced, and therefore the problem that the corners and the surface of the composite corrugated board body deform is avoided, and the service life of the composite corrugated board body is prolonged. And the composite corrugated board body is endowed with waterproof and flame-retardant effects, so that the use quality of the composite corrugated board body is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated paperboards, in particular to a low-weight, lightweight, multi-layer composite corrugated paperboard. Background Art

[0002] Corrugated cardboard, also known as corrugated cardboard, is a multi-layer adhesive body made of at least one layer of corrugated paper and a layer of cardboard. It has good elasticity and extensibility and is mainly used to make cartons, carton sandwiches and other packaging materials for fragile goods. It is made into a raw cardboard similar to yellow cardboard, and then mechanically processed to make it corrugated. The actual performance of corrugated cardboard depends on three factors: the characteristics of the core paper and cardboard, and the structure of the carton itself.

[0003] The curved support layer inside the existing composite corrugated cardboard is a single layer. Once it is subjected to force, it will deform directly, causing the surface of the composite corrugated cardboard to deform. At the same time, the existing composite corrugated cardboard is often easily scratched by other objects at the four corners during transportation, causing deformation of the corners of the corrugated cardboard.

[0004] Therefore, it is particularly important to design a low-weight, lightweight, multi-layer composite corrugated cardboard to solve the above-mentioned defects. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model designs a low-weight, lightweight, multi-layer composite corrugated cardboard. The low-weight, lightweight, multi-layer composite corrugated cardboard aims to solve the technical problems that the stress-bearing surface of the composite corrugated cardboard will deform under the existing technology, and the four corners of the composite corrugated cardboard are easily scratched and deformed by other objects.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A low-weight, lightweight, multi-layer composite corrugated cardboard comprises a composite corrugated cardboard body, wherein the four corners of the composite corrugated cardboard body are fixedly connected with protective corner sleeves, and the composite corrugated cardboard body is composed of face paper, a first buffer layer, a middle separator paper, a second buffer layer and a bottom paper from top to bottom, wherein the inner sides of the first buffer layer and the second buffer layer are fixedly connected with a first paper core board and a second paper core board respectively, the bottoms of the first paper core board and the second paper core board are fixedly connected with multiple groups of buffer cardboards, and the tops of the first paper core board and the second paper core board are fixedly connected with multiple groups of reinforcing ribs.

[0008] As a preferred solution of the present invention, the protective corner sleeve includes an outer sleeve fixedly connected to the four corners of the composite corrugated cardboard body, and cover plates are installed on the upper and lower ends of the outer sleeve. Two sets of cover plates are fixedly connected to the opposite sides of the two sets of cover plates on multiple sets of plug-in posts, and sockets are opened at positions corresponding to the plug-in posts on the upper and lower sides of the outer sleeve.

[0009] As a preferred solution of the present invention, the outer sheath and the cover plate are fixedly connected to the outer side of the composite corrugated cardboard body by adhesive, and multiple sets of adhesive grooves are provided on the inner sides of the outer sheath and the cover plate.

[0010] As a preferred solution of the present invention, a waterproof layer is provided on the side of the surface paper away from the bottom paper, a first flame retardant layer is provided on the inner side of the two groups of waterproof layers, and a second flame retardant layer is provided on the upper and lower sides of the middle separator paper.

[0011] As a preferred solution of the present invention, the waterproof layer is a plastic film, and the first flame retardant layer and the second flame retardant layer are both coated with melamine flame retardant.

[0012] As a preferred solution of the present invention, the first paper core board and the second paper core board are both designed in a corrugated structure, multiple groups of the buffer cardboards are located in the corrugated grooves at the bottom of the first paper core board and the second paper core board and are distributed at equal intervals, and multiple groups of the reinforcing ribs are located in the corrugated grooves at the top of the first paper core board and the second paper core board and are distributed at equal intervals.

[0013] As a preferred solution of the present invention, multiple groups of connecting ribs are fixedly connected to the outer sides of the multiple groups of reinforcing ribs, and flame-retardant filling strips are fixedly connected to the inner sides of the multiple groups of reinforcing ribs.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model protects the four corners of the composite corrugated cardboard body through the design of multiple sets of protective corner sleeves. The first buffer layer and the second buffer layer are designed to have a compact structure to meet the requirements of low weight and lightweight, while strengthening the overall composite corrugated cardboard body, thereby avoiding the problem of deformation of the corners and surface of the composite corrugated cardboard body, and giving the composite corrugated cardboard body waterproof and flame retardant effects, greatly improving the use quality of the composite corrugated cardboard body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the protective corner sleeve structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the composite corrugated paperboard body of the utility model;

[0019] Figure 4 for Figure 3 Enlarged schematic diagram of point A in the middle.

[0020] In the figure: 1. Composite corrugated cardboard body; 2. Protective corner sleeve; 201. Outer sheath; 202. Cover plate; 203. Connecting column; 204. Socket; 205. Glue groove; 3. Face paper; 301. Waterproof layer; 302. First flame retardant layer; 4. First buffer layer; 5. Middle separator paper; 501. Second flame retardant layer; 6. Second buffer layer; 7. Bottom paper; 8. First paper core board; 9. Second paper core board; 10. Buffer cardboard; 11. Reinforcing ribs; 1101. Connecting ribs; 1102. Flame retardant filling strips. DETAILED DESCRIPTION

[0021] The following will combine 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, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] Example:

[0023] See also Figures 1-4 , the utility model provides a technical solution:

[0024] A low-weight, lightweight, multi-layer composite corrugated cardboard comprises a composite corrugated cardboard body 1, the four corners of the composite corrugated cardboard body 1 are fixedly connected with protective corner sleeves 2, the composite corrugated cardboard body 1 is composed of face paper 3, a first buffer layer 4, a middle separator paper 5, a second buffer layer 6 and a bottom paper 7 from top to bottom, the inner sides of the first buffer layer 4 and the second buffer layer 6 are fixedly connected with a first paper core board 8 and a second paper core board 9 respectively, the bottoms of the first paper core board 8 and the second paper core board 9 are fixedly connected with multiple groups of buffer cardboards 10, and the tops of the first paper core board 8 and the second paper core board 9 are fixedly connected with multiple groups of reinforcing ribs 11.

[0025] First, the protective corner sleeve 2 includes an outer sleeve 201 fixedly connected to the four corners of the composite corrugated cardboard body 1, and a cover plate 202 is installed at the upper and lower ends of the outer sleeve 201. The two sets of cover plates 202 are fixedly connected to the opposite sides of the multiple sets of plug-in columns 203. The upper and lower sides of the outer sleeve 201 are provided with plug-in holes 204 at positions corresponding to the plug-in columns 203. The outer sleeve 201 and the cover plate 202 are fixedly connected to the outer side of the composite corrugated cardboard body 1 by adhesive. The inner sides of the outer sleeve 201 and the cover plate 202 are provided with multiple sets of glue grooves 205. First, apply the adhesive to the outer sleeve 201. 01, then stick the outer sheath 201 to the outside of the four corners of the composite corrugated cardboard body 1, then apply the adhesive to the glue groove 205 on the inner side of the cover plate 202, and then insert the plug-in column 203 into the socket 204, so that the cover plate 202 is fixedly glued to the upper and lower sides of the composite corrugated cardboard body 1, completing the assembly of the protective corner sleeve 2, which is not only convenient for installation, but also can effectively protect the four corners of the composite corrugated cardboard body 1 through multiple sets of protective corner sleeves 2, thereby preventing the four corners of the composite corrugated cardboard body 1 from being scratched and deformed.

[0026] Then, a waterproof layer 301 is provided on the side away from the face paper 3 and the bottom paper 7, and a first flame retardant layer 302 is provided on the inner side of the two sets of waterproof layers 301. A second flame retardant layer 501 is provided on the upper and lower sides of the middle separator paper 5. The waterproof layer 301 is a plastic film. The first flame retardant layer 302 and the second flame retardant layer 501 are both coated with melamine flame retardant. The waterproof layer 301 makes the upper and lower sides of the composite corrugated cardboard body 1 waterproof, preventing the four corners of the composite corrugated cardboard body 1 from being deformed and damaged due to moisture. The first flame retardant layer 302 and the second flame retardant layer 501 coated with melamine flame retardant provide multi-level flame retardant protection, giving the composite corrugated cardboard body 1 excellent flame retardant effect.

[0027] Secondly, the first paper core board 8 and the second paper core board 9 are both designed in a corrugated structure. Multiple groups of buffer cardboards 10 are located in the corrugated grooves at the bottom of the first paper core board 8 and the second paper core board 9 and are evenly spaced. Multiple groups of reinforcing ribs 11 are located in the corrugated grooves at the top of the first paper core board 8 and the second paper core board 9 and are evenly spaced. The corrugated first paper core board 8 and the second paper core board 9 are added with an additional layer on the basis of the traditional composite corrugated cardboard body 1, which not only improves its structural strength, but also adds multiple groups of buffer cardboards 10 and reinforcing ribs 11 inside. The compact structure enables the composite corrugated cardboard body 1 to meet the requirements of low weight and lightweight. The buffer cardboard 10 can be buffered and restored by deformation when under pressure, thereby avoiding the problem of deformation of the composite corrugated cardboard body 1.

[0028] Finally, multiple groups of connecting ribs 1101 are fixedly connected to the outer sides of the multiple groups of reinforcing ribs 11, and flame-retardant filling strips 1102 are fixedly connected to the inner sides of the multiple groups of reinforcing ribs 11. The reinforcing ribs 11 provide additional connection reinforcement and are fixedly connected to the interior of the composite corrugated cardboard body 1 through the connecting ribs 1101, thereby improving the internal structural strength of the composite corrugated cardboard body 1. At the same time, the internal flame-retardant filling strips 1102 further improve the flame retardant effect of the composite corrugated cardboard body 1.

[0029] In this embodiment, the implementation scenario is specifically as follows: first, the adhesive is applied to the glue groove 205 on the inner side of the outer sheath 201, and then the outer sheath 201 is glued to the outside of the four corners of the composite corrugated cardboard body 1, and then the adhesive is applied to the glue groove 205 on the inner side of the cover plate 202, and then the plug-in column 203 is inserted into the plug hole 204, so that the cover plate 202 is fixedly glued to the upper and lower sides of the composite corrugated cardboard body 1, and the assembly of the protective corner sleeve 2 is completed, which is not only convenient for installation, but also can effectively protect the composite corrugated cardboard body 1 through multiple sets of protective corner sleeves 2. The four corners are protected to prevent the four corners of the composite corrugated cardboard body 1 from being scratched and deformed. The upper and lower sides of the composite corrugated cardboard body 1 are waterproofed by the waterproof layer 301 to prevent the four corners of the composite corrugated cardboard body 1 from being deformed and damaged by moisture. The first flame retardant layer 302 and the second flame retardant layer 501 coated with melamine flame retardant provide multi-level flame retardant protection, giving the composite corrugated cardboard body 1 excellent flame retardant effect. The corrugated first paper core board 8 and the second paper core board 9 are added on the basis of the traditional composite corrugated cardboard body 1. The composite corrugated cardboard body 1 is provided with a plurality of layers, which can not only improve its structural strength, but also add multiple groups of buffer cardboards 10 and reinforcing ribs 11 inside. The compact structure enables the composite corrugated cardboard body 1 to meet the requirements of low weight and lightweight. The buffer cardboard 10 can be cushioned and restored by deformation when under pressure, thereby avoiding the problem of deformation of the composite corrugated cardboard body 1. The reinforcing ribs 11 provide additional connection reinforcement and are fixedly connected to the inside of the composite corrugated cardboard body 1 through the connecting ribs 1101, so that the internal structural strength of the composite corrugated cardboard body 1 is improved. At the same time, the internal flame retardant filling strips 1102 further improve the flame retardant effect of the composite corrugated cardboard body 1. The whole operation process is simple and convenient. Compared with the existing composite corrugated cardboard, the utility model can protect the four corners of the composite corrugated cardboard body 1. The compact design structure can meet the requirements of low weight and lightweight, while strengthening the overall composite corrugated cardboard body 1, thereby avoiding the problem of deformation of the corners and surface of the composite corrugated cardboard body 1, and giving the composite corrugated cardboard body 1 waterproof and flame retardant effects, thereby greatly improving the use quality of the composite corrugated cardboard body 1.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-weight, lightweight, multi-layer composite corrugated paperboard, comprising a composite corrugated paperboard body (1), characterized in that: The four corners of the composite corrugated paperboard body (1) are fixedly connected with protective corner sleeves (2). The composite corrugated paperboard body (1) is composed of a face paper (3), a first buffer layer (4), a middle separator paper (5), a second buffer layer (6) and a bottom paper (7) from top to bottom. The first buffer layer (4) and the second buffer layer (6) are respectively fixedly connected with a first paper core board (8) and a second paper core board (9) on their inner sides. The bottoms of the first paper core board (8) and the second paper core board (9) are fixedly connected with a plurality of groups of buffer paperboards (10). The tops of the first paper core board (8) and the second paper core board (9) are fixedly connected with a plurality of groups of reinforcing ribs (11).

2. The low-weight, lightweight, multi-layer composite corrugated paperboard according to claim 1, characterized in that: The protective corner sleeve (2) comprises an outer sleeve (201) fixedly connected to the four corners of the composite corrugated paperboard body (1); cover plates (202) are installed at both upper and lower ends of the outer sleeve (201); two sets of cover plates (202) are fixedly connected to the opposite sides thereof with a plurality of sets of plug-in posts (203); and plug-in holes (204) are provided at positions corresponding to the plug-in posts (203) on both upper and lower sides of the outer sleeve (201).

3. The low-weight, lightweight, multi-layer composite corrugated paperboard according to claim 2, characterized in that: The outer sheath (201) and the cover plate (202) are both fixedly connected to the outer side of the composite corrugated paperboard body (1) by adhesive, and the inner sides of the outer sheath (201) and the cover plate (202) are both provided with a plurality of sets of adhesive grooves (205).

4. The low-weight, lightweight, multi-layer composite corrugated paperboard according to claim 1, characterized in that: The side of the surface paper (3) away from the bottom paper (7) is provided with a waterproof layer (301), the inner sides of the two groups of waterproof layers (301) are provided with a first flame retardant layer (302), and the upper and lower sides of the middle separator paper (5) are provided with a second flame retardant layer (501).

5. The low-weight, lightweight, multi-layer composite corrugated paperboard according to claim 4, characterized in that: The waterproof layer (301) is a plastic film, and the first flame retardant layer (302) and the second flame retardant layer (501) are both coated with melamine flame retardant.

6. The low-weight, lightweight, multi-layer composite corrugated paperboard according to claim 1, characterized in that: The first paper core board (8) and the second paper core board (9) are both designed in a corrugated structure, a plurality of groups of buffer paperboards (10) are arranged at equal intervals in the corrugated grooves at the bottom of the first paper core board (8) and the second paper core board (9), and a plurality of groups of reinforcing ribs (11) are arranged at equal intervals in the corrugated grooves at the top of the first paper core board (8) and the second paper core board (9).

7. The low-weight, lightweight, multi-layer composite corrugated paperboard according to claim 1, characterized in that: Multiple groups of connection ribs (1101) are fixedly connected to the outer sides of the multiple groups of reinforcing ribs (11), and flame-retardant filling strips (1102) are fixedly connected to the inner sides of the multiple groups of reinforcing ribs (11).

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