Corrugated board with high-strength double corrugated paper cores

Abstract

The utility model discloses a corrugated board with high-strength double corrugated paper cores, which comprises an outer layer paper board and a wave layer board fixed on the outer layer paper board, a sandwich layer is arranged at one end of the wave layer board far away from the outer layer paper board, the sandwich layer comprises a protective frame, a buffer chamber is formed on the inner side of the protective frame, and the buffer chamber is arranged in the protective frame. A plurality of pressure-resistant strips which are distributed at equal intervals are arranged in the buffer chamber, the pressure-resistant strips are horizontally arranged, a plurality of protruding columns are fixedly connected to the two ends of each pressure-resistant strip, air bags are arranged on the outer sides of the protruding columns, each air bag comprises a thin bag body and thick bag bodies arranged at the two ends of the thin bag body, and the two thick bag bodies are symmetrical to the two ends of the thin bag body. According to the corrugated board with the high-strength double corrugated paper cores, pressure is directly borne through the multiple pressure-resistant strips, the borne pressure is gradually dispersed to the air bags on the outer sides of the pressure-resistant strips, the air bags gradually disperse the pressure, and therefore the situation that a certain part is broken and damaged due to the fact that the certain part bears too large pressure is avoided, and the pressure-resistant capacity of the corrugated board is higher.

Description

Technical Field

[0001] This utility model relates to a corrugated cardboard, specifically a corrugated cardboard with a high-strength double-walled core. Background Technology

[0002] Corrugated cardboard is a multi-layered adhesive, consisting of at least one layer of corrugated core paper (commonly known as "corrugated sheet", "corrugated paper", "corrugated core paper", "corrugated base paper") and one layer of cardboard (also known as "boxboard" or "boxboard paper"). It has high mechanical strength and can withstand collisions and drops during handling.

[0003] Existing corrugated cardboard typically lacks a structure to distribute pressure, resulting in excessive pressure being applied to a certain area of ​​its surface, making it prone to cracking and damage. Utility Model Content

[0004] The purpose of this invention is to provide a corrugated cardboard with a high-strength double-walled core. The cardboard directly bears the pressure through multiple pressure-resistant strips, and gradually disperses the pressure to the air bladders on the outside. This allows the air bladders to gradually disperse the pressure, thereby preventing any part from being subjected to excessive pressure and breaking or being damaged, thus making it more pressure-resistant.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a corrugated cardboard with a high-strength double-walled core, comprising an outer cardboard layer and a corrugated layer fixed on the outer cardboard layer. A sandwich layer is provided at the end of the corrugated layer away from the outer cardboard layer. The sandwich layer includes a protective frame, and a buffer chamber is formed inside the protective frame. Multiple pressure-resistant strips are provided in the buffer chamber at equal intervals. The pressure-resistant strips are all horizontally arranged, and multiple protruding posts are fixedly connected to both ends of the pressure-resistant strips. Airbags are provided on the outer sides of the multiple protruding posts. The airbags include thin airbags and thick airbags provided at both ends of the thin airbags. The whole structure formed by the thin airbags and the thick airbags is a hollow cavity structure, and the air pressure inside the cavities of the thin airbags and the thick airbags is equal to the value of one standard atmosphere. The two thick airbags are symmetrical about the two ends of the thin airbags.

[0006] Preferably, there are two outer cardboard layers and two corrugated sheets, with the two corrugated sheets fixed to opposite sides of the two outer cardboard layers respectively.

[0007] Preferably, waterproof cotton is fixedly bonded to the outside of the protective frame; the waterproof cotton plays a certain role in waterproofing, thereby facilitating the protection of the structure inside the buffer chamber.

[0008] Preferably, both ends of the pressure-resistant strip are fixedly connected to the protective frame; both the protective frame and the pressure-resistant strip can be made of rigid materials such as PVC or PP, thereby playing a role in resisting pressure and enhancing the strength of the corrugated cardboard.

[0009] Preferably, protective panels are provided at both ends of the sandwich layer, and the two protective panels are respectively bonded and fixed to the two ends of the protective frame, and the two protective panels are respectively bonded and fixed to the two corrugated layer boards; the two protective panels can be used to protect the structure inside the buffer chamber.

[0010] Preferably, both the thin and thick capsules are fixed on the fixing base, and the fixing base is fixed on the protective panel.

[0011] Preferably, the multiple protruding columns at the same end of the pressure-resistant strip are arranged in a straight line; the multiple protruding columns, together with multiple airbags, enable real-time buffering when various parts of the outer cardboard are subjected to pressure.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, through the sandwich layer, when the outer cardboard is subjected to pressure, the multiple pressure-resistant strips in the sandwich layer directly bear the pressure and gradually disperse the pressure to the air bladder on the outside, so that the air bladder gradually disperses the pressure, thereby avoiding the cracking and damage of a certain part due to excessive pressure, thus greatly improving the strength of the corrugated cardboard and making it more pressure-resistant. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This utility model Figure 1 A cross-sectional view along the AA direction.

[0015] Figure 3 This utility model Figure 2 Enlarged view of the structure at point B in the middle.

[0016] The reference numerals and names in the figure are as follows: 1. Outer cardboard; 2. Corrugated board; 3. Sandwich layer; 31. Protective frame; 32. Waterproof cotton; 33. Buffer chamber; 34. Pressure-resistant strip; 35. Protruding column; 36. Airbag; 361. Thin airbag; 362. Coarse airbag; 363. Fixing base; 4. Protective panel. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0018] In the description of the embodiments of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0019] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0020] Please see Figures 1 to 3This utility model provides an embodiment of a corrugated cardboard with a high-strength double-walled core, comprising an outer cardboard 1 and a corrugated layer 2 fixed to the outer cardboard 1. Two outer cardboards 1 and two corrugated layers 2 are provided, each fixed to one side of the two outer cardboards 1 facing each other. A sandwich layer 3 is provided at the end of the corrugated layer 2 away from the outer cardboard 1. The sandwich layer 3 includes a protective frame 31, and a waterproof cotton 32 is fixedly adhered to the outside of the protective frame 31, providing a certain degree of waterproofing. This design facilitates the protection of the structure within the buffer chamber 33. A buffer chamber 33 is formed inside the protective frame 31, and multiple equally spaced pressure-resistant strips 34 are arranged within it. Protective panels 4 are provided at both ends of the sandwich layer 3. The two protective panels 4 are respectively bonded and fixed to both ends of the protective frame 31, and also respectively bonded and fixed to two corrugated sheets 2. The two protective panels 4 can protect the structure within the buffer chamber 33. Both ends of the pressure-resistant strips 34 are fixedly connected to the protective frame 31. Furthermore, both the protective frame 31 and the pressure-resistant strip 34 can be made of rigid materials such as PVC or PP to resist pressure and enhance the strength of the corrugated cardboard. The pressure-resistant strips 34 are horizontally arranged, and multiple protruding posts 35 are fixedly connected to both ends of each strip. Airbags 36 are provided on the outer sides of each protruding post 35. The multiple protruding posts 35 at the same end of the pressure-resistant strip 34 are arranged in a straight line. The multiple protruding posts 35, in conjunction with the multiple airbags 36, ensure that when various parts of the outer cardboard 1 are subjected to pressure... Both can provide real-time buffering. The airbag 36 includes a thin bladder 361 and thick bladders 362 disposed at both ends of the thin bladder 361. The thin bladder 361 and the thick bladders 362 form a hollow cavity structure. The air pressure inside the cavity of the thin bladder 361 and the thick bladders 362 is equal to one standard atmosphere. The two thick bladders 362 are symmetrical about both ends of the thin bladder 361. Both the thin bladder 361 and the thick bladders 362 are fixed on the fixing base 363, which is fixed on the protective panel 4.

[0021] Please refer to the following: Figures 1 to 3 In the operation of this utility model, when a certain part of one of the outer cardboard layers 1 is subjected to pressure, after the pressure is applied to the outer cardboard layer 1, it is quickly transmitted to the pressure-resistant strip 34 in the buffer chamber 33 through the corrugated layer 2 and the protective panel 4. At this time, the pressure-resistant strip 34 will undergo a certain deformation, causing the protruding column 35 to be squeezed into the corresponding thin bladder 361, generating pressure on the thin bladder 361. The pressure is dispersed towards the coarse bladders 362 at both ends of the thin bladder 361, thereby dispersing the pressure and preventing a certain part from being damaged due to excessive pressure.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A corrugated board with a high-strength double-walled core, comprising an outer board (1) and a corrugated layer (2) fixed to the outer board (1), characterized in that: The corrugated board (2) has a sandwich layer (3) at one end away from the outer cardboard (1). The sandwich layer (3) includes a protective frame (31), and a buffer chamber (33) is formed inside the protective frame (31). Multiple pressure-resistant strips (34) are arranged at equal intervals inside the buffer chamber (33). The pressure-resistant strips (34) are all horizontally arranged, and multiple protruding posts (35) are fixedly connected to both ends of the pressure-resistant strips (34). An airbag (36) is provided on the outer side of each airbag. The airbag (36) includes a thin bladder (361) and a thick bladder (362) located at both ends of the thin bladder (361). The thin bladder (361) and the thick bladder (362) together form a hollow cavity structure. The air pressure inside the cavity of the thin bladder (361) and the thick bladder (362) is equal to the value of one standard atmosphere. The two thick bladders (362) are symmetrical about the two ends of the thin bladder (361).

2. The corrugated cardboard with a high-strength double-walled core according to claim 1, characterized in that: Two outer cardboard sheets (1) and two corrugated sheets (2) are provided, and the two corrugated sheets (2) are respectively fixed to the opposite side of the two outer cardboard sheets (1).

3. The corrugated cardboard with a high-strength double-walled core according to claim 1, characterized in that: Waterproof cotton (32) is fixedly bonded to the outside of the protective frame (31).

4. A corrugated cardboard with a high-strength double-walled core according to claim 1, characterized in that: Both ends of the pressure-resistant strip (34) are fixedly connected to the protective frame (31).

5. A corrugated cardboard with a high-strength double-walled core according to claim 1, characterized in that: Both ends of the sandwich layer (3) are provided with protective panels (4). The two protective panels (4) are respectively bonded and fixed to the two ends of the protective frame (31), and the two protective panels (4) are respectively bonded and fixed to the two corrugated plates (2).

6. A corrugated cardboard with a high-strength double-walled core according to claim 5, characterized in that: Both the thin capsule (361) and the thick capsule (362) are fixed on the fixing seat (363), which is fixed on the protective panel (4).

7. A corrugated cardboard with a high-strength double-walled core according to claim 1, characterized in that: The multiple protruding columns (35) at the same end of the pressure-resistant strip (34) are all arranged in a straight line.

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