Damp-proof corrugated board

Abstract

The utility model provides a moisture-proof corrugated board, belongs to the field of corrugated board manufacturing, and solves the problems that the conventional corrugated board is easily affected with damp after being stored for a long time, and the strength is reduced after the corrugated board is affected with damp. The utility model comprises a body, the body comprises an outer waterproof layer, a first drying layer, a bearing layer, a second drying layer and an inner waterproof layer from inside to outside in sequence, the outer waterproof layer is composed of first surface paper, the first surface paper is provided with a first groove and is coated with a paraffin coating, and anhydrous calcium chloride and silica gel are respectively arranged in the first drying layer and the second drying layer. Wave paper, first kraft paper and second kraft paper are arranged on the bearing layer, a solid hose is arranged in the wave paper, and bearing strips are arranged in the first kraft paper and the second kraft paper. The utility model has the advantages that the waterproof layer and the drying layer are respectively arranged on the two sides of the bearing layer to prevent water and absorb moisture, so that the strength of the bearing layer is ensured; and the bearing strips and the solid hoses are arranged in the bearing layer, so that the extensibility is ensured, the structural strength after being affected with damp is ensured, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of corrugated paperboard manufacturing and relates to a corrugated paperboard, in particular to a moisture-proof corrugated paperboard. Background Art

[0002] Corrugated cardboard is a multi-layer adhesive body, which is composed of at least one layer of corrugated core paper and one layer of cardboard. It has high mechanical strength and can withstand collisions and falls during transportation. 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] After long-term storage, moisture will gradually invade the interior of the corrugated paper. The core paper of the corrugated paper will soften after being damp, and the structural strength will decrease. The softened corrugated cardboard will be easily damaged, causing the built-in items to fall out and cause damage to the items. Even after the moisture is removed from the corrugated cardboard, the strength cannot return to its original level, reducing the service life of the corrugated cardboard.

[0004] For example, the corrugated cardboard with application number 202221250713.X is provided with two groups of outer layer paper and inner layer paper, a corrugated paper core is pasted between one group of outer layer paper and inner layer paper, an elastic support member is provided between the other group of outer layer paper and inner layer paper, and elastic support balls are provided between the elastic support members. When the corrugated cardboard is compressed, the elastic support members and the elastic support balls absorb the pressure and release it after the pressure subsides, thereby preventing the corrugated cardboard from irreversible deformation.

[0005] The above patent lacks a moisture-proof structure. After the corrugated paper core becomes damp and is compressed again, it is difficult to maintain its original shape, resulting in direct pressure on the elastic support parts and the elastic support balls, which can easily cause damage to the elastic support surface and ultimately lead to penetration of the corrugated cardboard. Utility Model Content

[0006] The utility model aims to solve the above problems in the prior art and provides a corrugated paperboard which can absorb moisture, prevent moisture and ensure the

[0007] The utility model can be realized through the following technical scheme: a moisture-proof corrugated paperboard, comprising a paperboard body, wherein the paperboard body is composed of an outer waterproof layer, a first dry layer, a bearing layer, a second dry layer and an inner waterproof layer from the inside to the outside, wherein the outer waterproof layer is mainly a face paper, a groove is provided on the face paper, a paraffin coating is applied on the outside of the face paper, anhydrous calcium chloride and silica gel are placed in the first dry layer and the second dry layer, corrugated paper is arranged on the bearing layer, kraft paper is laid on both sides of the corrugated paper, and a waterproof film is arranged on the inner waterproof layer.

[0008] In the above-mentioned moisture-proof corrugated paperboard, the first groove is an isosceles trapezoid.

[0009] In the above-mentioned moisture-proof corrugated paperboard, a plurality of trapezoidal hoses are arranged in the first drying layer, anhydrous calcium chloride is arranged in the trapezoidal hoses, and slots and corresponding protrusions are opened at the waist of the trapezoidal hoses.

[0010] In the above-mentioned moisture-proof corrugated paperboard, the contact point between the kraft paper and the corrugated paper is provided with transversely arranged load-bearing strips, and the corrugated paper is sinusoidally distributed.

[0011] In the above-mentioned moisture-proof corrugated paperboard, the load-bearing strips are in vertical cross-contact with the wave crests of the corrugated paper, a solid hose is installed in the corrugated paper, and the solid hose is in vertical cross-contact with the load-bearing strips.

[0012] In the above-mentioned moisture-proof corrugated paperboard, the second drying layer is formed by bonding a rectangular hose, and silica gel is arranged in the rectangular hose.

[0013] In the moisture-proof corrugated paperboard, the inner side of the inner waterproof layer is paved with a second kraft paper, the second kraft paper is provided with a second face paper, and the outer side of the second face paper is paved with a waterproof film.

[0014] Compared with the prior art, the utility model has the advantages that multiple waterproof layers and drying layers are arranged in the corrugated cardboard, and the load-bearing layer is provided with load-bearing strips and solid hoses, which improve the strength of the load-bearing layer. Even if moisture breaks through the waterproof layer, the load-bearing layer can still play a role, thereby increasing the service life of the corrugated paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional picture of moisture-proof corrugated cardboard;

[0016] Figure 2 It is a front view of moisture-proof corrugated cardboard;

[0017] Figure 3 yes Figure 1 Enlarged view on the inner circle A;

[0018] Figure 4 yes Figure 2 Enlarged view of inner circle B;

[0019] Among them, 1. cardboard body; 2. outer waterproof layer; 21. facial paper 1; 211. groove 1; 22. paraffin coating; 3. first dry layer; 31. trapezoidal hose; 311. slot; 312. protrusion; 32. anhydrous calcium chloride; 4. load-bearing layer; 41. corrugated paper; 42. kraft paper 1; 43. load-bearing strip; 44. solid hose; 5. second dry layer; 51. rectangular hose; 52. silica gel; 6. inner waterproof layer; 61. facial paper 2; 62. kraft paper 2; 63. waterproof membrane. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] like Figures 1 to 3 As shown, the utility model can be implemented through the following embodiments: a moisture-proof corrugated paperboard, including a paperboard body 1, the paperboard body 1 is composed of an outer waterproof layer 2, a first dry layer 3, a load-bearing layer 4, a second dry layer 5 and an inner waterproof layer 6 from the inside to the outside, the outer waterproof layer 2 is mainly a face paper 21, a groove 211 is provided on the face paper 21, a paraffin coating 22 is applied to the outside of the face paper 21, anhydrous calcium chloride 32 and silica gel 52 are placed in the first dry layer 3 and the second dry layer 5, a corrugated paper 41 is arranged on the load-bearing layer, kraft paper 42 is laid on both sides of the corrugated paper 41, and a waterproof film 63 is arranged on the inner waterproof layer 6.

[0022] The outer waterproof layer 2, the first dry layer 3, the bearing layer 4, the second dry layer 5 and the inner waterproof layer 6 are arranged to prevent moisture while protecting the bearing layer 4 from moisture. The inner waterproof layer 6 and the outer waterproof layer 2 are used to prevent moisture from entering the paperboard body 1. Water-absorbing materials such as anhydrous calcium chloride 32 and silica gel 52 are placed in the first dry layer 3 and the second dry layer 5 to remove moisture. The kraft paper 42 on both sides of the corrugated paper 41 of the bearing layer 4 provides a small amount of waterproofing and bearing function, thereby improving the strength of the bearing layer 4.

[0023] like Figure 1 and Figure 2 As shown, the groove 1 211 is an isosceles trapezoid. The isosceles trapezoid groove 1 211 is convenient for collecting the water released from the paraffin coating 22, so that the water condenses into water droplets and is discharged in a centralized manner, thereby reducing the time that the water stays on the outer waterproof layer 2.

[0024] like Figures 1 to 4 As shown, a plurality of trapezoidal hoses 31 are arranged in the first drying layer 3, anhydrous calcium chloride 32 is arranged in the trapezoidal hoses 31, and slots 311 and corresponding protrusions 312 are provided at the waist of the trapezoidal hoses 31. The arrangement of the trapezoidal hoses 31 enhances the structural strength of the paperboard body 1, and the trapezoidal shape enables the trapezoidal hoses 31 to disperse the force, providing better ductility and strength, and the slots 311 and the protrusions 312 cooperate to make the contact between the trapezoidal hoses 31 closer, so that the trapezoidal hoses 31 provide better ductility and structural strength; the anhydrous calcium chloride 32, as a chemical desiccant, can absorb moisture passing through the outer waterproof layer 2.

[0025] like Figure 2 and Figure 4As shown, the bearing layer 4 is composed of kraft paper 42 and corrugated paper 41, kraft paper 42 is installed on both sides of the corrugated paper 41, and transversely arranged bearing strips 43 are arranged at the contact between the kraft paper 42 and the corrugated paper 41, and the corrugated paper 41 is sinusoidally distributed. The setting of the bearing strips 43 strengthens the transverse strength of the bearing layer 4, and can bear a greater weight even after the lifting hole is opened on the cardboard box composed of the cardboard body 1. The sinusoidally distributed corrugated paper 41 is convenient for dispersing the applied force; the bearing strips 43 set on the kraft paper 42 are convenient for assembly.

[0026] like Figure 1 and Figure 4 As shown, the bearing strip 43 is in vertical cross contact with the wave crest of the corrugated paper 41, and a solid hose 44 is installed in the corrugated paper 41, and the solid hose 44 is in vertical cross contact with the bearing strip 43. The solid hose 44 is arranged in the corrugated paper 41 as a structural reinforcement of the corrugated paper 41 to improve the structural strength of the corrugated paper 41. The solid hose 44 and the wave crest of the corrugated paper 41 are in vertical cross contact with the bearing strip 43 to form a grid-like bearing surface, thereby improving the strength of the bearing layer 4.

[0027] like Figure 2 and Figure 4 As shown, the second drying layer 5 is formed by bonding a rectangular hose 51, and a silica gel 52 is arranged in the rectangular hose 51. The silica gel 52 contained in the rectangular hose 51 can remove moisture brought into the carton composed of the cardboard body 1, and the rectangular hose 51 is used to provide a space for accommodating air and silica gel 52 and absorbing the pressure on the cardboard body 1.

[0028] like Figure 1 and Figure 2 As shown, the inner side of the inner waterproof layer 6 is paved with kraft paper 2 62, on which there is facial paper 2, and outside of the facial paper 2 there is a waterproof film 63. The waterproof film 63 is arranged on the outer side of the inner waterproof layer 6 to block the moisture in the carton composed of the paperboard body 1. The kraft paper 2 62 is used as the base of the inner waterproof layer 6 to provide tensile strength to ensure that the inner waterproof layer 6 is difficult to be torn open. The facial paper 2 is used as an intermediate layer to combine the kraft paper 2 62 and the waterproof film 63, and to enhance the thickness of the inner waterproof layer 6, to provide a buffer, and to prevent the waterproof film 63 from being damaged after an object contacts the inner waterproof layer 6.

[0029] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0030] Although various terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A moisture-proof corrugated paperboard, comprising a paperboard body (1), characterized in that: The paperboard body (1) comprises, from the inside to the outside, an outer waterproof layer (2), a first drying layer (3), a bearing layer (4), a second drying layer (5) and an inner waterproof layer (6); the outer waterproof layer (2) is mainly a face paper (21); a groove (211) is provided on the face paper (21); a paraffin coating (22) is applied to the outside of the face paper (21); anhydrous calcium chloride (32) and silica gel (52) are placed in the first drying layer (3) and the second drying layer (5); a corrugated paper (41) is provided on the bearing layer (4); kraft paper (42) is laid on both sides of the corrugated paper (41); and a waterproof film (63) is provided on the inner waterproof layer (6).

2. A moisture-proof corrugated paperboard according to claim 1, characterized in that: The groove one (211) is an isosceles trapezoid.

3. The moisture-proof corrugated paperboard according to claim 1, characterized in that: A plurality of trapezoidal hoses (31) are arranged in the first drying layer (3), anhydrous calcium chloride (32) is arranged in the trapezoidal hoses (31), and a slot (311) and a corresponding protrusion (312) are provided at the waist of the trapezoidal hoses (31).

4. The moisture-proof corrugated paperboard according to claim 1, characterized in that: A transversely arranged load-bearing strip (43) is provided at the contact point between the kraft paper (42) and the corrugated paper (41), and the corrugated paper (41) is sinusoidally distributed.

5. The moisture-proof corrugated paperboard according to claim 4, characterized in that: The load-bearing strip (43) is in vertical cross contact with the wave crest of the corrugated paper (41); a solid hose (44) is installed inside the corrugated paper (41); and the solid hose (44) is vertical to the load-bearing strip (43).

6. The moisture-proof corrugated paperboard according to claim 1, characterized in that: The second drying layer (5) is formed by bonding a rectangular hose (51), and silica gel (52) is arranged inside the rectangular hose (51).

7. The moisture-proof corrugated paperboard according to claim 1, characterized in that: The inner side of the inner waterproof layer (6) is paved with a second kraft paper (62), a second surface paper (61) is arranged on the second kraft paper (62), and a waterproof membrane (63) is arranged on the second surface paper (61).

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