Composite corrugated board for carton

Abstract

The composite corrugated board comprises surface paper layers and an inner paper layer, the surface paper layers are located on the two sides of the inner paper layer respectively, supplement blocks are evenly arranged between the surface paper layers and the inner paper layer, supporting blocks are arranged on the two sides of each supplement block, and a limiting piece is arranged on the lower portion of each supplement block in a sleeved mode. Each limiting piece comprises a connecting piece and a V-shaped plate which are connected with each other, and a connecting arm penetrating through the inner paper layer is connected between every two adjacent limiting pieces. By arranging the surface paper layer, the inner paper layer, the supporting block, the supplement block and the limiting piece, the paperboard is of a double-layer structure, has the capacity of bearing pressure on the two sides at the same time, can effectively prevent the paperboard from being seriously deformed, improves the strength of the paperboard, is beneficial to practical application, can limit the supplement block by combining with the limiting piece, does not affect gap filling after the supplement block is deformed, and improves the production efficiency. And the connecting arm is arranged to serve as a transition structure, the surface paper layer and the inner paper layer are effectively connected, and the structural stability is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of paperboards, in particular to a composite corrugated paperboard for cartons. Background Art

[0002] As the most important and widely used packaging material, corrugated cardboard has the advantages of light weight, low cost, easy processing, convenient storage and transportation. The existing patent (Announcement No.: CN110978713A) discloses a composite corrugated cardboard. The invention sets supporting paper blocks and supplementary paper blocks. If a part of the composite corrugated cardboard is flattened by external force, the part can be patted to reset the flattened part and bulge. The supplementary paper blocks will automatically fill the part under the action of gravity, or squeeze the supplementary paper blocks next to the part to fill the flattened part, so that the part bulges. The supplementary paper blocks in other parts will fill the gaps in turn, and the cardboard can be repaired. However, in actual applications, since corrugated cardboard is generally used to make cartons, both the inside and outside of the corrugated cardboard are easily squeezed. In the above technical solution, the cardboard is a single-layer structure, which makes the pressure bearing capacity of the corrugated cardboard limited, which is not conducive to practical application. For this reason, we propose a composite corrugated cardboard for cartons. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a composite corrugated paperboard for a carton.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A composite corrugated paperboard for a carton is designed, comprising a surface paper layer and an inner paper layer, wherein the surface paper layers are respectively located on both sides of the inner paper layer, supplementary blocks are evenly arranged between the surface paper layer and the inner paper layer, support blocks are arranged on both sides of the supplementary blocks, and a limiting piece is sleeved on the lower part of the supplementary block, wherein the limiting piece comprises a connecting piece and a V-shaped plate connected to each other, and connecting arms passing through the inner paper layer are connected between adjacent limiting pieces.

[0006] In the above solution, the support block comprises an outer shell with an opening on one side, the inner part of the outer shell is filled with a buffer layer 1, and the outer shell is connected to a cover plate.

[0007] In the above solution, the supplementary block comprises a paper roll, and an elastic body is fixed inside the paper roll.

[0008] In the above solution, the elastic body includes a film, and the film is filled with a second buffer layer.

[0009] In the above solution, the buffer layer 2 and the buffer layer 1 are configured as foam balls.

[0010] In the above solution, the connecting arm is V-shaped, and the inner paper layer is provided with a socket matching the connecting arm.

[0011] In the above solution, a docking plate matching the V-shaped plate is connected between the top ends of the support blocks.

[0012] The advantages and beneficial effects of the utility model are as follows: by arranging a face paper layer, an inner paper layer, a support block, a supplementary block and a limiting member, the face paper layer and the inner paper layer are used as the basic skeleton of the corrugated paperboard, and the support block and the supplementary block are used to fill the gap in the skeleton to provide support for the face paper layer. When the face paper layer is squeezed, the distance between the relative support blocks will gradually decrease, driving the supplementary block to be squeezed by the support block, thereby causing the supplementary block to become a strip and fill the gap between the relative support blocks upward, thereby providing support for the face paper layer again. Compared with the prior art, the utility model has a double-layer structure and the ability to bear pressure on both sides at the same time, which can effectively prevent the paperboard from being severely deformed, improve the strength of the paperboard, and is beneficial to practical applications. Combined with the limiting member, the supplementary block can be limited without affecting the filling of the gap by the supplementary block after deformation, thereby improving the structural stability. By arranging a connecting arm, the limiting members on both sides are connected, and at the same time, as a transition structure, the face paper layer and the inner paper layer are effectively connected, thereby further improving the structural stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 This is a schematic diagram of the structure of a composite corrugated paperboard for a carton proposed by the utility model;

[0015] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;

[0016] Figure 3 This is a schematic structural diagram of a supplementary block of a composite corrugated paperboard for a carton proposed by the utility model;

[0017] Figure 4 This is a structural schematic diagram of a position limiting member of a composite corrugated paperboard for a carton proposed by the utility model;

[0018] Figure 5 The utility model is a schematic diagram of the internal structure of a supporting block of a composite corrugated paperboard for a carton.

[0019] In the figure: surface paper layer 1, inner paper layer 2, support block 3, outer shell 31, buffer layer 1 32, cover plate 33, supplementary block 4, paper roll 41, elastic body 42, film 421, buffer layer 2 422, limiter 5, connecting piece 51, V-shaped plate 52, connecting arm 53, docking plate 6, socket 7, connecting arm 8. DETAILED DESCRIPTION

[0020] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0021] See also Figure 1-5 The utility model provides a technical solution: a composite corrugated paperboard for a carton, comprising a face paper layer 1 and an inner paper layer 2, the face paper layers 1 are respectively located on both sides of the inner paper layer 2, and supplementary blocks 4 are evenly arranged between the face paper layer 1 and the inner paper layer 2; that is, the inner paper layer 2 is sandwiched between a pair of face paper layers 1, the supplementary blocks 4 are cylindrical and horizontally arranged between the face paper layer 1 and the inner paper layer 2, and the supplementary blocks 4 are used to provide support to the face paper layer 1;

[0022] Specifically, the supplementary block 4 includes a paper roll 41, which is a cardboard wound into a cylindrical shape. The end of the paper roll 41 is bonded and fixed. An elastic body 42 is fixed inside the paper roll 41. The elastic body 42 is located in the innermost cavity of the paper roll 41 and is fixed to the inner wall of the paper roll 41 by an adhesive. The elastic force of the elastic body 42 is used to buffer the impact on the paper roll 41, so that the supplementary block 4 has good pressure resistance.

[0023] Specifically, the elastic body 42 includes a film 421, and a second buffer layer 422 is filled in the film 421. The film 421 can be a plastic film generally used for packaging. The film 421 is used to wrap the second buffer layer 422 to provide protection for the second buffer layer 422.

[0024] Support blocks 3 are provided on both sides of the supplementary block 4, and the support blocks 3 are respectively fixed to the inner wall of the surface paper layer 1 and the inner paper layer 2;

[0025] Specifically, the support block 3 includes a shell 31 with an opening on one side. Generally, the shell 31 is open on one side away from the supplementary block 4. The shell 31 is filled with a buffer layer 32. The shell 31 is connected to a cover plate 3. The outer side of the cover plate 3 is respectively adhered and fixed to the surface paper layer 1 and the inner paper layer 2.

[0026] Furthermore, the buffer layer 2 422 and the buffer layer 1 32 are configured as foam balls; the foam balls have good elasticity, are not prone to permanent deformation, can effectively buffer external impacts, and are low in cost, which is beneficial to actual production;

[0027] A stopper 5 is sleeved on the lower part of the supplementary block 4, and the stopper 5 includes a connecting piece 51 and a V-shaped plate 52 connected to each other; in actual application, the inner walls of the V-shaped plate 52 are glued and fixed to the two sides of the bottom of the outer surface of the paper roll 41 of the supplementary block 4, and the connecting piece 51 is fixed to the surface paper layer 1 and the inner paper layer 2 respectively. When the supplementary block 4 is squeezed and becomes a strip, the stopper 5 is used to prevent the supplementary block 4 from excessive displacement and completely detaching from the support block 3, thereby improving the structural stability;

[0028] Specifically, by setting the surface paper layer 1, the inner paper layer 2, the support block 3, the supplementary block 4 and the limiting member 5, the surface paper layer 1 and the inner paper layer 2 are used as the basic skeleton of the corrugated cardboard, and the support block 3 and the supplementary block 4 are used to fill the gap in the skeleton to provide support for the surface paper layer 1. When the surface paper layer 1 is squeezed, the distance between the relative support blocks 3 will gradually decrease, driving the supplementary block 4 to be squeezed by the support block 3, and then the supplementary block 4 will become a strip and fill the gap between the relative support blocks 3 upward, and then provide support for the surface paper layer 1 again. Compared with the prior art, the double-layer structure has the ability to bear pressure on both sides at the same time, can effectively prevent the cardboard from being severely deformed, improve the strength of the cardboard, and is beneficial to practical applications. Combined with the limiting member 5, it can limit the supplementary block 4 without affecting the filling of the gap by the supplementary block 4 after deformation, thereby improving the structural stability.

[0029] Furthermore, a docking plate 6 matching the V-shaped plate 52 is connected between the top ends of the support blocks 3;

[0030] Specifically, the butt joint plate 6 is V-shaped. When the supplementary block 4 is squeezed and deformed, the V-shaped plate 52 will naturally shrink inward, the angle will become smaller, and the bottom center of the V-shaped plate 52 will move down and insert into the butt joint plate 6, and the contact surfaces of the two will fit together, thereby fully filling the gap between the surface paper layer 1 and the inner paper layer 2, thereby improving the structural strength;

[0031] A connecting arm 8 passing through the inner paper layer 2 is connected between adjacent limiting members 5; the connecting arm 8 can be integrally formed with the limiting member 5 and formed into the existing shape by folding;

[0032] Furthermore, the connecting arm 8 is V-shaped, and the inner paper layer 2 is provided with a socket 7 matching the connecting arm 8 .

[0033] Specifically, the connection arms 8 are provided to connect the limiting members 5 on both sides, and at the same time, as a transition structure, the surface paper layer 1 and the inner paper layer 2 are effectively connected to further improve the structural stability.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A composite corrugated paperboard for carton, comprising a surface paper layer (1) and an inner paper layer (2), characterized in that: The surface paper layers (1) are respectively located on both sides of the inner paper layer (2); supplementary blocks (4) are evenly arranged between the surface paper layer (1) and the inner paper layer (2); support blocks (3) are arranged on both sides of the supplementary blocks (4); a limiting member (5) is sleeved on the lower part of the supplementary block (4); the limiting member (5) comprises a connecting piece (51) and a V-shaped plate (52) connected to each other; and connecting arms (8) passing through the inner paper layer (2) are connected between adjacent limiting members (5).

2. The composite corrugated paperboard for carton according to claim 1, characterized in that: The support block (3) comprises an outer shell (31) with an opening on one side, the outer shell (31) is filled with a buffer layer 1 (32), and the outer shell (31) is connected to a cover plate (33).

3. The composite corrugated paperboard for carton according to claim 1, characterized in that: The supplementary block (4) comprises a paper roll (41), and an elastic body (42) is fixed inside the paper roll (41).

4. The composite corrugated paperboard for carton according to claim 3, characterized in that: The elastic body (42) comprises a film (421), and a second buffer layer (422) is filled in the film (421).

5. The composite corrugated paperboard for carton according to claim 4, characterized in that: The buffer layer 2 (422) and the buffer layer 1 (32) are configured as foam balls.

6. The composite corrugated paperboard for carton according to claim 1, characterized in that: The connecting arm (8) is V-shaped, and the inner paper layer (2) is provided with a socket (7) matching the connecting arm (8).

7. The composite corrugated paperboard for carton according to claim 1, characterized in that: A docking plate (6) matching the V-shaped plate (52) is connected between the top ends of the support blocks (3).

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