Waterproof and moistureproof kraft paper board

Abstract

The utility model relates to the technical field of kraft paper boards, in particular to a waterproof and moistureproof kraft paper board which comprises a paper board body, the paper board body is composed of a base layer paper board, two reinforcing layers, a buffer layer and a cow leather layer, the two reinforcing layers are located at the two ends of the base layer paper board respectively, and the buffer layer is located at the ends, away from the base layer paper board, of the reinforcing layers. The cow leather layer is located at one end of the buffer layer away from the reinforcing layer; the reinforcing layer is used for increasing the overall strength of the paperboard main body; the buffer layer is used for carrying out buffer treatment on impact borne by the paperboard body, the buffer layer can also be used for improving the moisture-proof effect of the paperboard body, the reinforcing layer is composed of two sets of connecting plates, a first reinforcing block and a second reinforcing block, the two sets of connecting plates are located on the outer side of the paperboard body, and the first reinforcing block is located on the outer side of the paperboard body. Compared with an existing kraft paper board, the kraft paper board has the advantage that the overall practicability of the kraft paper board can be improved through the design.

Description

Technical Field

[0001] The utility model relates to the technical field of kraft paperboard, in particular to a waterproof and moisture-proof kraft paperboard. Background Art

[0002] Kraft paper is used as a packaging material. It is usually tawny. Semi-bleached or fully bleached kraft pulp is light brown, cream-colored or white. The basis weight is 80-120 g / m2. The breaking length is generally above 6000 m. The tear resistance, bursting work and dynamic strength are very high. It is mostly reel paper, and there is also flat paper. It is made of sulfate softwood pulp as raw material, beaten, and formed on a fourdrinier paper machine.

[0003] At present, the base surface paper of the kraft paperboard needs to be bonded with glue, and the moisture contained in the glue will remain in the kraft paperboard. The moisture inside the corrugated paper is not easy to dissipate, and dehumidifying the kraft paperboard has always been a headache for people. In humid or rainy and snowy seasons, the external moisture is easier to enter the corrugated paper, seriously affecting the performance of the corrugated paper and wasting resources. After the waterproof layer on the kraft paper is broken or damaged, the waterproof performance is easily damaged. Secondly, a diamond structure is set between the kraft papers, and its overall anti-extrusion effect is poor, and its transverse tear resistance has not changed and is easy to damage. Therefore, for the improvement of the existing kraft paperboard, it is particularly important to design a new type of waterproof and moisture-proof kraft paperboard to solve the above technical defects and improve the overall practicality of the kraft paperboard. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a waterproof and moisture-proof kraft paperboard, which can buffer the impact on the cardboard body, reduce the damage suffered, and can increase the waterproof and moisture-proof of the cardboard body, while increasing the overall strength and improving the overall practicality of the kraft paperboard, so as to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A waterproof and moisture-proof kraft paperboard, including a cardboard body, the cardboard body is composed of a base cardboard, a reinforcing layer, a buffer layer and a kraft layer. Two groups of the reinforcing layers are respectively located at both ends of the base cardboard. The buffer layer is located at one end of the reinforcing layer away from the base cardboard. The kraft layer is located at one end of the buffer layer away from the reinforcing layer;

[0007] The reinforcing layer is used to increase the overall strength of the cardboard body;

[0008] The buffer layer is used to buffer the impact on the cardboard body, and the buffer layer can also be used to increase the moisture-proof effect of the cardboard body.

[0009] As a preferred embodiment of the present utility model, the reinforcing layer is composed of connecting plates, first reinforcing blocks and second reinforcing blocks. Two groups of the connecting plates are both located outside the cardboard body, multiple groups of the first reinforcing blocks are located between the two groups of connecting plates, and the second reinforcing blocks are located outside the first reinforcing blocks.

[0010] As a preferred embodiment of the present utility model, the external structure size of the first reinforcing block corresponds to the internal structure size of the second reinforcing block, and the second reinforcing block is connected to the connecting plate through the first reinforcing block.

[0011] As a preferred embodiment of the present utility model, the buffer layer is composed of a fixing plate, air bags, connecting pipes and drying pipes. The fixing plate is located at one end of the reinforcing layer away from the base cardboard. Multiple groups of the air bags are respectively located at both ends of the fixing plate. The connecting pipes are located between the two groups of air bags. Multiple groups of the drying pipes are all located inside the fixing plate and inside the air bags.

[0012] As a preferred embodiment of the present utility model, the air bags and the connecting pipes are designed in a mutually communicating structure, and multiple groups of the air bags are evenly distributed at both ends of the fixing plate.

[0013] As a preferred embodiment of the present utility model, a desiccant is provided inside the drying pipe.

[0014] As a preferred embodiment of the present utility model, a first waterproof layer is provided at one end of the kraft layer away from the buffer layer, a second waterproof layer is provided at one end of the first waterproof layer away from the kraft layer, and both the first waterproof layer and the second waterproof layer are made of acrylic acid.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. In the present utility model, through the design of the buffer layer in cooperation with the kraft layer, when the fixing plate is impacted, the air bags are pressured. In cooperation with the connecting pipes, the gas inside can be introduced into the other air bags. Through the air bags and the gas inside them, the impact force can be buffered, thereby reducing the damage to the fixing plate. Therefore, the damage to the cardboard body can be reduced. When water vapor enters the inside of the base cardboard, through the desiccant inside the drying pipe, the water vapor around the cardboard body can be effectively absorbed, which is beneficial to protecting the cardboard body from being soaked by water vapor and extending the service life of the cardboard body. The acrylic acid is made of a pure acrylic polymer emulsion as the base material and other additives are added to obtain a one-component water-based emulsion waterproof coating. The waterproof film formed after the curing of the first waterproof layer and the second waterproof layer has certain extensibility, elasticity, crack resistance, impermeability and weather resistance, and can play a role in waterproofing, anti-seepage and protection. The first waterproof layer and the second waterproof layer enable the cardboard body to have double moisture-proof performance. Even if the second waterproof layer is damaged by friction, the first waterproof layer can still continuously protect the cardboard body from moisture, improving the waterproof and moisture-proof coefficient of the kraft paper.

[0017] 2. In the present utility model, through the design of the strengthening layer, when the connecting plate is in use, the overall strength of the connecting plate can be increased by the cooperation of the second strengthening block and the first strengthening block, which can play a supporting role and is beneficial to increasing the compressive capacity of the cardboard main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the structure of the cardboard main body of the present utility model;

[0020] Figure 3 is a schematic diagram of the planar structure of the kraft layer of the present utility model.

[0021] In the figure: 1. Cardboard main body; 2. Base cardboard; 3. Strengthening layer; 4. Buffer layer; 5. Kraft layer; 6. Connecting plate; 7. First strengthening block; 8. Second strengthening block; 9. Fixed plate; 10. Airbag; 11. Connecting pipe; 12. Drying pipe; 13. First waterproof layer; 14. Second waterproof layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment:

[0024] Please refer to Figures 1 - 3 , the present utility model provides a technical solution:

[0025] A waterproof and moisture-proof kraft cardboard, comprising a cardboard main body 1, the cardboard main body 1 is composed of a base cardboard 2, a strengthening layer 3, a buffer layer 4 and a kraft layer 5. Two groups of strengthening layers 3 are respectively located at both ends of the base cardboard 2, the buffer layer 4 is located at one end of the strengthening layer 3 away from the base cardboard 2, and the kraft layer 5 is located at one end of the buffer layer 4 away from the strengthening layer 3;

[0026] The strengthening layer 3 is used to increase the overall strength of the cardboard main body 1;

[0027] Further, the reinforcing layer 3 is composed of a connecting plate 6, a first reinforcing block 7, and a second reinforcing block 8. Two groups of connecting plates 6 are both located on the outer side of the cardboard body 1. Multiple groups of first reinforcing blocks 7 are located between the two groups of connecting plates 6. The second reinforcing block 8 is located on the outer side of the first reinforcing block 7. When the cardboard body 1 is in use, the overall strength of the cardboard body 1 can be increased through the reinforcing layer 3, thereby increasing the service life of the cardboard body 1.

[0028] Among them, the external structure size of the first reinforcing block 7 is designed to correspond to the internal structure size of the second reinforcing block 8. The second reinforcing block 8 is connected to the connecting plate 6 through the first reinforcing block 7. The inner side of the second reinforcing block 8 is in contact with the outer side of the first reinforcing block 7, so that the second reinforcing block 8 can be connected to the connecting plate 6. When the connecting plate 6 is in use, the overall strength of the connecting plate 6 can be increased by the cooperation of the second reinforcing block 8 and the first reinforcing block 7, which can play a supporting role and is beneficial to increasing the compressive capacity of the cardboard body 1.

[0029] The buffer layer 4 is used to buffer the impact received by the cardboard body 1, and the buffer layer 4 can also be used to increase the moisture-proof effect of the cardboard body 1.

[0030] Secondly, the buffer layer 4 is composed of a fixing plate 9, an airbag 10, a connecting pipe 11, and a drying pipe 12. The fixing plate 9 is located at one end of the reinforcing layer 3 away from the base cardboard 2. Multiple groups of airbags 10 are respectively located at both ends of the fixing plate 9. The connecting pipe 11 is located between the two groups of airbags 10. Multiple groups of drying pipes 12 are all located inside the fixing plate 9 and inside the airbags 10. When the cardboard body 1 is in use, the buffer layer 4 can buffer the impact force received by the cardboard body 1, so that the damage received by the cardboard body 1 can be reduced. And when water vapor enters the base cardboard 2, the water vapor can be absorbed to prevent the water vapor from affecting the use of the cardboard body 1.

[0031] Furthermore, the airbag 10 and the connecting pipe 11 are designed in a mutually communicating structure, and multiple groups of airbags 10 are evenly distributed at both ends of the fixing plate 9. When the fixing plate 9 is impacted, the airbag 10 is pressured. Cooperating with the connecting pipe 11, the gas inside can be introduced into the other airbags 10. Through the airbag 10 and the gas inside it, the impact force can be buffered, thereby reducing the damage to the fixing plate 9, and thus reducing the damage to the cardboard body 1.

[0032] Even further, a desiccant is provided inside the drying pipe 12. When water vapor enters the base cardboard 2, the desiccant inside the drying pipe 12 can effectively absorb the water vapor around the cardboard body 1, which is beneficial to protecting the cardboard body 1 from being soaked by water vapor and extending the service life of the cardboard body 1.

[0033] Furthermore, one end of the cowhide layer 5 away from the buffer layer 4 is provided with a first waterproof layer 13, and one end of the first waterproof layer 13 away from the cowhide layer 5 is provided with a second waterproof layer 14. Both the first waterproof layer 13 and the second waterproof layer 14 are made of acrylic acid. The acrylic acid is made from a pure acrylic polymer emulsion as the base material, and other additives are added to obtain a one-component water-based emulsion waterproof coating. The waterproof film formed after the curing of the first waterproof layer 13 and the second waterproof layer 14 has certain extensibility, elastoplasticity, crack resistance, impermeability and weather resistance, and can play a role in waterproofing, anti-seepage and protection. The first waterproof layer 13 and the second waterproof layer 14 endow the cardboard body 1 with double moisture-proof performance. Even if the second waterproof layer 14 is damaged by friction, the cardboard body 1 can still be continuously moisture-proofed and protected by the first waterproof layer 13, improving the waterproof and moisture-proof coefficient of the kraft paper.

[0034] In this embodiment, the implementation scenario is specifically as follows: When the connecting plate 6 is in use, the cooperation of the second reinforcing block 8 and the first reinforcing block 7 can increase the overall strength of the connecting plate 6, which can play a supporting role and is beneficial to increasing the compressive capacity of the cardboard body 1. When the fixing plate 9 is impacted, the airbag 10 is pressured, and with the cooperation of the connecting pipe 11, the gas inside can be introduced into the other airbags 10. Through the airbag 10 and the gas inside, the impact force can be buffered, thereby reducing the damage to the fixing plate 9, and thus reducing the damage to the cardboard body 1. When water vapor enters the inside of the base cardboard 2, the desiccant inside the drying pipe 12 can effectively absorb the water vapor around the cardboard body 1, which is beneficial to protecting the cardboard body 1 from being soaked by water vapor and extending the service life of the cardboard body 1. The acrylic acid is made from a pure acrylic polymer emulsion as the base material, and other additives are added to obtain a one-component water-based emulsion waterproof coating. The waterproof film formed after the curing of the first waterproof layer 13 and the second waterproof layer 14 has certain extensibility, elastoplasticity, crack resistance, impermeability and weather resistance, and can play a role in waterproofing, anti-seepage and protection. The first waterproof layer 13 and the second waterproof layer 14 endow the cardboard body 1 with double moisture-proof performance. Even if the second waterproof layer 14 is damaged by friction, the cardboard body 1 can still be continuously moisture-proofed and protected by the first waterproof layer 13, improving the waterproof and moisture-proof coefficient of the kraft paper. Compared with the existing kraft cardboard, the overall practicability of the kraft cardboard can be improved by the design of the present invention.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof and moisture-proof kraft paperboard, comprising a paperboard body (1), characterized in that: The paperboard body (1) is composed of a base paperboard (2), a reinforcement layer (3), a buffer layer (4) and a cowhide layer (5), wherein the two groups of the reinforcement layers (3) are respectively located at two ends of the base paperboard (2), the buffer layer (4) is located at one end of the reinforcement layer (3) away from the base paperboard (2), and the cowhide layer (5) is located at one end of the buffer layer (4) away from the reinforcement layer (3); The reinforcing layer (3) is used to increase the overall strength of the paperboard body (1); The buffer layer (4) is used to buffer the impact on the paperboard body (1), and the buffer layer (4) can also be used to increase the moisture-proof effect of the paperboard body (1).

2. The waterproof and moisture-proof kraft paperboard according to claim 1, characterized in that: The reinforcing layer (3) is composed of a connecting plate (6), a first reinforcing block (7) and a second reinforcing block (8); two groups of the connecting plates (6) are located on the outside of the paperboard body (1); multiple groups of the first reinforcing blocks (7) are located between the two groups of the connecting plates (6); and the second reinforcing blocks (8) are located on the outside of the first reinforcing blocks (7).

3. The waterproof and moisture-proof kraft paperboard according to claim 2, characterized in that: The external structure size of the first reinforcement block (7) is designed to correspond to the internal structure size of the second reinforcement block (8), and the second reinforcement block (8) is connected to the connecting plate (6) via the first reinforcement block (7).

4. The waterproof and moisture-proof kraft paperboard according to claim 2, characterized in that: The buffer layer (4) is composed of a fixing plate (9), an air bag (10), a connecting pipe (11) and a drying pipe (12); the fixing plate (9) is located at one end of the reinforcing layer (3) away from the base paperboard (2); a plurality of groups of the air bags (10) are respectively located at both ends of the fixing plate (9); the connecting pipe (11) is located between two groups of the air bags (10); and the plurality of groups of the drying pipe (12) are all located inside the fixing plate (9) and inside the air bags (10).

5. The waterproof and moisture-proof kraft paperboard according to claim 4, characterized in that: The airbags (10) and the connecting pipes (11) are designed to be interconnected, and a plurality of groups of the airbags (10) are distributed at equal intervals at both ends of the fixing plate (9).

6. The waterproof and moisture-proof kraft paperboard according to claim 4, characterized in that: A desiccant is arranged inside the drying tube (12).

7. The waterproof and moisture-proof kraft paperboard according to claim 1, characterized in that: A first waterproof layer (13) is provided at one end of the cowhide layer (5) away from the buffer layer (4), and a second waterproof layer (14) is provided at one end of the first waterproof layer (13) away from the cowhide layer (5), and both the first waterproof layer (13) and the second waterproof layer (14) are made of acrylic acid.

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