Waterproof moisture-regaining-resistant high-strength corrugated board

Abstract

The utility model discloses a waterproof anti-moisture-regaining high-strength corrugated board which comprises an elastic supporting piece, a corrugated paper layer, a first cardboard paper layer and a second cardboard paper layer, the first cardboard paper layer is arranged above the corrugated paper layer, the second cardboard paper layer is arranged below the corrugated paper layer, a first lamination layer is arranged on the top face of the first cardboard paper layer, and a second lamination layer is arranged on the bottom face of the second cardboard paper layer. The corrugated paper layer bends and extends in a wave shape, an arc-shaped groove with an opening pointing to the second cardboard paper layer below is formed, the elastic supporting piece is arranged in the arc-shaped groove and comprises a U-shaped supporting part and a plane fixing part, the outer convex face of the U-shaped supporting part makes contact with the top of the arc-shaped groove, and the plane fixing part is fixed to the outer convex face of the U-shaped supporting part. An opening of the U-shaped supporting part points to the second cardboard paper layer below, and the plane fixing part is arranged at the opening of the U-shaped supporting part for blocking. According to the waterproof and moisture-regaining-resistant high-strength corrugated board, three-dimensional waterproof and moisture-regaining-resistant effects are achieved, and the overall structural strength is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated paper, in particular to a high-strength corrugated paperboard that is waterproof and moisture-rebound-resistant. Background Art

[0002] Corrugated cardboard has good elasticity, and the cartons made from it can withstand collisions during transportation and provide good protection for the packaged items.

[0003] Ordinary corrugated cardboard is usually composed of a composite of boxboard and corrugated paper. It has almost no waterproof effect, is not strong enough, and has poor impact resistance. In order to improve the waterproof effect of corrugated cardboard, a structure that adds a layer of waterproof film on the surface or inside of the corrugated cardboard is often used for waterproofing. In the prior art, a patent application with authorization announcement number CN210529372U discloses a high-moisture-proof and high-strength corrugated paper, which is waterproof and moisture-proof in the thickness direction by adding a layer of moisture-proof film, but cannot be waterproof in the plane direction. When the air humidity is high, moisture can enter the interior of the corrugated cardboard through the grooves of the corrugated cardboard, causing moisture regain problems. In addition, the moisture-proof film has limited effect on the increase in the strength of the corrugated cardboard, and needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a high-strength corrugated paperboard that is waterproof and moisture-rebound-resistant, thereby improving the three-dimensional waterproof effect and moisture-rebound resistance and enhancing the structural strength.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A high-strength corrugated paperboard that is waterproof and moisture-regain resistant, comprising: an elastic support member, a corrugated paper layer, a first box board layer and a second box board layer, wherein the first box board layer is arranged above the corrugated paper layer, and the second box board layer is arranged below the corrugated paper layer, the top surface of the first box board layer is provided with a first coating layer, and the bottom surface of the second box board layer is provided with a second coating layer, the corrugated paper layer is curved and extended in a wave shape, and forms an arc-shaped groove with an opening pointing to the second box board layer below, the elastic support member is arranged in the arc-shaped groove, the elastic support member comprises a U-shaped supporting portion and a planar fixing portion, the outer convex surface of the U-shaped supporting portion contacts the top of the arc-shaped groove, and the opening of the U-shaped supporting portion points to the second box board layer below, and the planar fixing portion is arranged at the opening of the U-shaped supporting portion for sealing.

[0007] Wherein, a third laminating layer is provided on the top surface of the corrugated paper layer.

[0008] Wherein, a fourth laminating layer is provided on the bottom surface of the corrugated paper layer.

[0009] Wherein, the bottom surface of the first boxboard paper layer is provided with a first waterproof adhesive layer bonded to the top of the corrugated paper layer.

[0010] Wherein, a second waterproof adhesive layer is provided on the top surface of the second boxboard paper layer, which is bonded to the corrugated paper layer and the bottom of the plane fixing portion.

[0011] Wherein, the U-shaped supporting portion and the planar fixing portion adopt an integrated plastic structure.

[0012] Wherein, the U-shaped support portion is filled with a desiccant.

[0013] The beneficial effects of the utility model are as follows: a high-strength corrugated cardboard that is waterproof and resistant to moisture resurgence, which utilizes a first laminating layer and a second laminating layer to waterproof both sides of the corrugated cardboard, and utilizes a third laminating layer and a fourth laminating layer to protect the corrugated paper layer, thereby preventing moisture from entering the interior of the corrugated cardboard layer through the grooves of the corrugated cardboard layer, thereby improving the waterproof and moisture resurgence capabilities of the corrugated paper layer, achieving three-dimensional waterproofness and moisture resurgence, and supporting the arc grooves with elastic support members to improve the impact resistance and resilience of the corrugated paper layer after deformation, thereby improving the overall structural strength and strengthening the protection of the packaged objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of another embodiment of the utility model. DETAILED DESCRIPTION

[0016] The following combination Figures 1 and 2 The technical solution of the present utility model is further illustrated by specific embodiments.

[0017] Example 1:

[0018] like Figure 1 As shown, the high-strength corrugated cardboard with waterproof and moisture-regain resistance includes: an elastic support member 3, a corrugated paper layer 4, a first boxboard paper layer 1 and a second boxboard paper layer 2. The first boxboard paper layer 1 is arranged above the corrugated paper layer 4, and the second boxboard paper layer 2 is arranged below the corrugated paper layer 4 to form a sandwich structure.

[0019] A first laminate layer 5 is provided on the top surface of the first cardboard layer 1 to provide waterproofing. Polyethylene (PE) particles can be used to coat the top surface of the first cardboard layer 1 for both water and oil repellency. A second laminate layer 8 is provided on the bottom surface of the second cardboard layer 2 to provide waterproofing on both sides of the corrugated cardboard.

[0020] In this embodiment, a third coating layer is provided on the top surface of the corrugated paper layer 4, and a fourth coating layer is provided on the bottom surface of the corrugated paper layer 4 to provide waterproof protection for the corrugated paper layer 4, prevent moisture from entering the interior through the grooves of the corrugated paper board layer 4, improve the waterproof and moisture-resistant capabilities of the corrugated paper layer 4, and achieve overall three-dimensional waterproof and moisture-resistant capabilities.

[0021] like Figure 1 As shown, the corrugated paper layer 4 is curved and extended in a wave shape, and forms an arc groove with an opening pointing to the second boxboard paper layer below. The elastic support member 3 is arranged in the arc groove. The arc groove is supported by the elastic support member 3, thereby improving the impact resistance and rebound ability of the corrugated paper layer 4 after deformation, and improving the overall structural strength.

[0022] In this embodiment, the elastic support member 3 comprises a U-shaped support portion 32 and a flat fixing portion 31. The outer convex surface of the U-shaped support portion 32 contacts the top of the arcuate groove, providing a tight fit. The opening of the U-shaped support portion 32 points downward toward the second cardboard layer 2. The flat fixing portion 31 is positioned at the opening of the U-shaped support portion 32 to seal it. The U-shaped support portion 32 and the flat fixing portion 31 utilize an integrated plastic structure, resulting in excellent rebound after compression and deformation. The elastic support member 3 is formed into a long strip by extrusion, which is then cut into pieces to fill the arcuate groove.

[0023] In order to improve the structural stability, a first waterproof adhesive layer 6 bonded to the top of the corrugated paper layer 4 is provided on the bottom surface of the first boxboard paper layer 1 to realize the compounding of the first boxboard paper layer 1 and the corrugated paper layer 4, and the bottom surface of the first boxboard paper layer 1 is waterproofed by the first waterproof adhesive layer 6, which has a good anti-moisture regain effect.

[0024] A second waterproof adhesive layer 7 bonded to the corrugated paper layer 4 and the bottom of the plane fixing portion 31 is provided on the top surface of the second boxboard paper layer 2. The second boxboard paper layer 2 is fixed to the plane fixing portion 31 and the corrugated paper layer 4 through the second waterproof adhesive layer 7, and the structure is stable.

[0025] Example 2:

[0026] like Figure 2 As shown, based on Example 1, the U-shaped support portion 32 is filled with a desiccant 9, and the desiccant 9 absorbs moisture from the airflow passing through the U-shaped support portion 32, thereby reducing the ambient humidity around the corrugated cardboard and the packaged objects.

[0027] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A high-strength corrugated cardboard that is waterproof and moisture-resistant, characterized in that: include: An elastic support member, a corrugated paper layer, a first boxboard layer and a second boxboard layer, the first boxboard layer is arranged above the corrugated paper layer, the second boxboard layer is arranged below the corrugated paper layer, the top surface of the first boxboard layer is provided with a first coating layer, the bottom surface of the second boxboard layer is provided with a second coating layer, the corrugated paper layer is curved and extended in a wave shape, and forms an arc-shaped groove with an opening pointing to the second boxboard layer below, the elastic support member is arranged in the arc-shaped groove, the elastic support member includes a U-shaped supporting portion and a planar fixing portion, the outer convex surface of the U-shaped supporting portion is in contact with the top of the arc-shaped groove, and the opening of the U-shaped supporting portion points to the second boxboard layer below, and the planar fixing portion is arranged at the opening of the U-shaped support portion for sealing.

2. The waterproof and moisture-rebound resistant high-strength corrugated paperboard according to claim 1, characterized in that: The top surface of the corrugated paper layer is provided with a third coating layer.

3. The waterproof and moisture-rebound resistant high-strength corrugated paperboard according to claim 1, characterized in that: The bottom surface of the corrugated paper layer is provided with a fourth coating layer.

4. The waterproof and moisture-rebound resistant high-strength corrugated paperboard according to claim 1, characterized in that: The bottom surface of the first boxboard paper layer is provided with a first waterproof adhesive layer bonded to the top of the corrugated paper layer.

5. The waterproof and moisture-regain resistant high-strength corrugated paperboard according to claim 1, characterized in that: A second waterproof adhesive layer is provided on the top surface of the second boxboard paper layer and is bonded to the corrugated paper layer and the bottom of the plane fixing portion.

6. The waterproof and moisture-rebound resistant high-strength corrugated paperboard according to claim 1, characterized in that: The U-shaped supporting portion and the plane fixing portion adopt an integrated plastic structure.

7. The waterproof and moisture-rebound resistant high-strength corrugated paperboard according to claim 1, characterized in that: The U-shaped supporting portion is filled with a desiccant.

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