Paper angle bead for outer packaging box of heavy product

Abstract

The utility model relates to the field of packaging boxes, in particular to a paper corner protector for a heavy product outer packaging box, which comprises a corner protector main body and a first rubber mat, the first rubber mat is fixedly arranged on the outer wall surface of the corner protector main body, and the corner protector main body is sequentially composed of an inner layer compressed paperboard, a waterproof plastic film and an outer layer compressed paperboard from inside to outside. And the thickness of the outer-layer compressed paperboard is smaller than that of the inner-layer compressed paperboard. According to the paper corner protector, the outer-layer compressed paperboard, the waterproof plastic film and the inner-layer compressed paperboard are arranged, so that when the outer-layer compressed paperboard is affected with damp, the inner-layer compressed paperboard can be kept in a dry state under the protection of the waterproof plastic film, most bearing capacity is reserved, and the situation that the bearing capacity is greatly reduced after the paper corner protector is affected with damp is improved; the outer-layer compressed paperboard can protect the waterproof plastic film from being directly rubbed with the ground, so that the waterproof plastic film is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the field of packaging boxes, in particular to a paper corner protector for an outer packaging box of heavy products. Background Art

[0002] Currently, the packaging and transportation industry commonly uses two types of packaging boxes: steel and wood. Both types of packaging boxes have some shortcomings. For example, steel packaging boxes are expensive, heavy, and have high transportation costs. Although wooden packaging boxes are inherently cheaper, they require further processing to meet export quarantine requirements, which undoubtedly increases costs. At the same time, the large amount of wood required is not environmentally friendly. To better meet the needs of packaging boxes, paper packaging boxes have emerged on the market. They are mainly made of boxboard with a certain load-bearing capacity and "L"-shaped paper corner protectors.

[0003] Paper corner protectors play a crucial role in bearing weight throughout the packaging box. However, the most commonly used paper corner protectors are made from high-density cardboard pressed from multiple layers of corrugated cardboard. Therefore, when exposed to moisture, they are susceptible to moisture, significantly reducing their compression and impact resistance. This directly impacts the lifespan of the paper corner protectors and the box's load-bearing strength. Therefore, it's necessary to improve this structure to overcome these drawbacks. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a paper corner protector for heavy-duty product outer packaging boxes. This utility model is achieved through the following technical solutions:

[0005] A paper corner protector for an outer packaging box of a heavy product comprises a corner protector body and a first rubber pad, wherein the first rubber pad is fixedly arranged on the outer wall surface of the corner protector body. The corner protector body comprises, from the inside to the outside, an inner layer of compressed cardboard, a waterproof plastic film and an outer layer of compressed cardboard, wherein the thickness of the outer layer of compressed cardboard is less than that of the inner layer of compressed cardboard.

[0006] In the above technical solution: the corner protector body serves as the main structure, playing the role of force bearing and supporting; the first rubber pad is used for the wall corner protector body to directly contact with the ground, so as to prevent the corner protector body from absorbing water on the ground and becoming damp; the corner protector body is divided into three layers, so that even if the outer layer of compressed cardboard absorbs water vapor in the air and becomes damp, the waterproof plastic film can protect the inner layer of compressed cardboard from moisture, so that the utility model can still maintain most of the load-bearing strength, and the outer layer of compressed cardboard can also prevent the waterproof plastic film from being damaged by direct friction on the ground.

[0007] The present invention is further configured as follows: a waterproof layer is coated on the side wall surface of the corner guard body.

[0008] In the above technical solution, the side wall surface of the corner protector body is also coated with a waterproof layer, which can reduce the area of ​​the outer compressed cardboard in contact with the air and reduce its moisture absorption speed.

[0009] The present invention is further configured such that the size of the first rubber pad is not smaller than the size of the corner protector body.

[0010] In the above technical solution: the size of the first rubber pad is not smaller than that of the corner protector body, so that the first rubber pad can protect a part of the outer compressed cardboard from contact with the air, thereby reducing the moisture absorption speed of the outer compressed cardboard.

[0011] The present invention is further configured as follows: a second rubber pad is further provided on the inner wall surface of the corner guard body.

[0012] In the above technical solution: the provision of the second rubber pad can increase the friction between the carton and the utility model, making the placement of the carton more stable and reducing the shaking of the carton.

[0013] The present invention is further configured such that the size of the second rubber pad is adapted to the size of the corner protector body.

[0014] In the above technical solution, the size of the second rubber pad is adapted to the size of the corner protector body, so that the second rubber pad can protect a portion of the outer compressed cardboard from contact with the air, further reducing the speed at which the outer compressed cardboard is affected by moisture.

[0015] The utility model discloses a paper corner protector for outer packaging boxes of heavy products. Compared with the prior art:

[0016] 1. The utility model provides an outer layer of compressed cardboard, a waterproof plastic film, and an inner layer of compressed cardboard. This allows the outer layer of compressed cardboard to remain dry under the protection of the waterproof plastic film even if it gets damp, thereby preserving most of the load-bearing capacity and improving the situation where the load-bearing capacity of the paper corner protector decreases significantly after getting damp.

[0017] 2. The outer layer of compressed cardboard of the utility model can protect the waterproof plastic film from direct friction with the ground, thereby avoiding damage to the waterproof plastic film;

[0018] 3. The present invention also reduces the contact area between the outer layer of compressed cardboard and the air by providing the first rubber pad, the second rubber pad and the waterproof layer, thereby greatly reducing the moisture absorption speed of the outer layer of compressed cardboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the present utility model;

[0020] Figure 2 This is a cross-sectional schematic diagram of the corner protector body of the present utility model;

[0021] Figure 3 This is a schematic diagram of another embodiment of the present invention.

[0022] The numbers and letters in the figure represent the corresponding component names: 10-corner protector body; 101-inner layer compressed cardboard; 102-waterproof plastic film; 103-outer layer compressed cardboard; 20-first rubber pad; 30-second rubber pad. DETAILED DESCRIPTION

[0023] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process. However, the protection scope of the present invention is not limited to the following embodiment.

[0024] like Figure 1-3 As shown, the present invention proposes a paper corner protector for outer packaging of heavy products, comprising a corner protector body 10 and a first rubber pad 20. The first rubber pad 20 is fixedly arranged on the outer wall surface of the corner protector body 10. The corner protector body 10 comprises, from the inside to the outside, an inner layer of compressed cardboard 101, a waterproof plastic film 102, and an outer layer of compressed cardboard 103. The thickness of the outer layer of compressed cardboard 103 is less than that of the inner layer of compressed cardboard 101. According to different usage positions, the shape of the corner protector body 10 can be "L"-shaped or corner-shaped. When used at the four corners of a carton, the shape of the corner protector body 10 should be corner-shaped. When used to protect the edge of a carton, the shape of the corner protector body 10 should be "L"-shaped. Preferably, the thickness of the inner layer of compressed cardboard 101 is four to five times that of the outer layer of compressed cardboard 103.

[0025] like Figure 1-3 As shown, the utility model proposes a paper corner protector for a heavy-duty product outer packaging box, wherein the side wall surface of the corner protector body 10 is also coated with a waterproof layer. Wherein, the waterproof layer can be made of hot melt adhesive.

[0026] like Figure 1-3 As shown, the utility model proposes a paper corner protector for a heavy product outer packaging box, the size of the first rubber pad 20 is not less than the size of the corner protector body 10. The shape of the first rubber pad 20 is consistent with the shape of the corner protector body 10, so that the two fit better.

[0027] like Figure 1-3 As shown, the utility model proposes a paper corner protector for a heavy product outer packaging box, and a second rubber pad 30 is further provided on the inner wall surface of the corner protector body 10. The shape of the second rubber pad 30 is consistent with the shape of the corner protector body 10 so that the two fit together.

[0028] like Figure 1-3As shown, the utility model proposes a paper corner protector for a heavy-duty product outer packaging box, and the size of the second rubber pad 30 is adapted to the size of the corner protector body 10 .

[0029] The working principle of this utility model is:

[0030] a) Use corner paper protectors to protect the four corners of the carton, and use "L" shaped paper protectors to protect the four sides of the carton;

[0031] b) When there is water on the ground, the first rubber pad will prevent the corner protector from direct contact with the water;

[0032] c) The first rubber pad, the second rubber pad and the waterproof layer reduce the contact area between the outer compressed cardboard and the air;

[0033] d) When the outer layer of compressed cardboard gets wet, the waterproof plastic film completely isolates the inner layer of compressed cardboard from the outer layer;

[0034] e) Prevent the inner layer of compressed cardboard from absorbing water, thereby retaining the load-bearing capacity of the inner layer of compressed cardboard;

[0035] f) The damp outer compressed cardboard can still protect the waterproof plastic film from direct contact with the ground, thereby protecting the waterproof plastic film from being worn by the ground.

[0036] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

Claims

1. A paper corner protector for outer packaging of heavy products, characterized by: The corner protector comprises a corner protector body (10) and a first rubber pad (20), wherein the first rubber pad (20) is fixedly arranged on the outer wall surface of the corner protector body (10), and the corner protector body (10) comprises, from the inside to the outside, an inner layer of compressed cardboard (101), a waterproof plastic film (102), and an outer layer of compressed cardboard (103), wherein the thickness of the outer layer of compressed cardboard (103) is less than that of the inner layer of compressed cardboard (101).

2. The paper corner protector for heavy-duty product outer packaging box according to claim 1, characterized in that: The side wall surface of the corner protection body (10) is also coated with a waterproof layer.

3. The paper corner protector for heavy product outer packaging according to claim 1, characterized in that: The size of the first rubber pad (20) is not smaller than the size of the corner guard body (10).

4. A paper corner protector for a heavy-duty product outer packaging box according to any one of claims 1 to 3, characterized in that: A second rubber pad (30) is also provided on the inner wall surface of the corner guard body (10).

5. The paper corner protector for heavy-duty product outer packaging box according to claim 4, characterized in that: The size of the second rubber pad (30) is adapted to the size of the corner guard body (10).

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