High elasticity double-corrugated paper core corrugated paper

Abstract

The utility model relates to a kind of packaging materials, especially a kind of high-elasticity double-corrugated paper core corrugated paper, including inner paper, first core paper, interlayer, second core paper and surface paper, the first core paper and the second core paper all include multiple convex corrugated parts, connecting portion is formed between the adjacent two convex corrugated parts on the same core paper, each the convex corrugated part of the second core paper is pasted on the surface paper, each the connecting portion of the second core paper is pasted on the interlayer, each the connecting portion of the first core paper is pasted on the inner paper, each the convex corrugated part of the first core paper is pasted on the interlayer, and each the convex corrugated part of the first core paper and each the connecting portion of the second core paper are arranged one by one corresponding. By setting interlayer as expansion material layer, after core paper is pressed, it can be reset quickly using the expansion performance of interlayer, so that core paper rebounds quickly, thickness is relatively smaller and elasticity is relatively higher.

Description

Technical Field

[0001] This utility model relates to a packaging material, and more particularly to a high-elasticity double-walled corrugated paper core. Background Technology

[0002] Corrugated paper, as a common packaging material, is widely used in the packaging of various products. Traditional corrugated paper has limited elastic cushioning performance. To improve the elastic cushioning performance of corrugated paper, many companies have made improvements to traditional corrugated paper. Chinese invention patent application CN111152536A discloses a high-elasticity corrugated cardboard. This high-elasticity corrugated cardboard, through the cooperation of multiple transverse reinforcing ribs and multiple support frames, can increase the side wall support force of one of the inner cardboards. Through the multiple elastic elements, it can rebound in time after the outer and inner cardboards are deformed, avoiding damage to the cardboard. Since its elasticity depends on the setting of elastic elements, and in order to set up elastic elements, two layers of inner cardboard and a pad are also required, resulting in a relatively large thickness of the entire corrugated paper.

[0003] In view of this, the applicant has conducted in-depth research on the structure of highly elastic corrugated paper, which led to this case. Utility Model Content

[0004] The purpose of this invention is to provide a high-elasticity double-wall corrugated paper core with relatively small thickness and relatively high elasticity.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A high-elasticity double-wall corrugated paper core includes an inner liner, a first core, an interlayer, a second core, and a face liner arranged in sequence. Both the first and second cores include multiple raised corrugations arranged in a straight line. The arrangement direction of the raised corrugations on the first core is the same as that on the second core. A connecting portion is formed between adjacent raised corrugations on the same core. The raised corrugations of the second core are adhered to the face liner, and the connecting portions of the second core are adhered to the interlayer. The connecting portions of the first core are adhered to the inner liner, and the raised corrugations of the first core are adhered to the interlayer. The raised corrugations of the first core and the connecting portions of the second core are arranged in a one-to-one correspondence. The interlayer is a stretchable material layer.

[0006] As an improvement of this utility model, the interlayer is an elastic non-woven fabric.

[0007] As an improvement of this utility model, the first core paper and / or the second core paper are provided with a plurality of elastic threads that pass through each of the convex portions of the same core paper, and each elastic thread is bonded with an adhesive block that is fixedly connected to the corresponding convex portion at the position where it contacts each of the convex portions. In the same core paper, each elastic thread is arranged in a straight line and is arranged parallel to the arrangement direction of each of the convex portions.

[0008] As an improvement of this utility model, a sticker is pasted on the side of the first core paper and / or the second core paper facing the inner paper. The sticker includes a plurality of low-ribbed portions arranged in a straight line. Each low-ribbed portion on the same sticker and each convex-ribbed portion on the core paper to which the sticker is pasted are arranged in a one-to-one correspondence, and the height of the low-ribbed portion is less than the height of the corresponding convex-ribbed portion.

[0009] As an improvement of this utility model, in the same sticker, two adjacent low-ridge portions are not connected to each other.

[0010] As an improvement of this utility model, in the same sticker, there is an adhesive part that is tightly attached to the corresponding connecting part between two adjacent low-ridge portions.

[0011] By adopting the above solution, this utility model has the following beneficial effects: 1. By arranging the corrugated parts of the first core paper in a one-to-one correspondence with the connecting parts of the second core paper, and setting the interlayer as a stretchable material layer, the stretchable properties of the interlayer can be used to achieve rapid reset after the core paper is compressed, so that the core paper rebounds quickly, with relatively small thickness and relatively high elasticity.

[0012] 2. By inserting elastic threads into the corrugated parts, the elastic threads stretch when compressed, and can quickly return to their original position when the pressure is reduced, which helps to further improve the resilience of the corrugated paper.

[0013] 3. By setting the sticker to form a low ridge, the low ridge can provide a certain support to the convex ridge during the compression process, so that it can effectively resist secondary impact. It has good resilience on one side and good load-bearing capacity on the other. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the high-elasticity double-corrugated paper core corrugated paper in Example 1; Figure 2 This is a schematic diagram of the results of the high-elasticity corrugated paper core corrugated paper in Example 2.

[0015] The corresponding markings in the diagram are as follows: Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the terms "first," "second," etc., used in the present invention are used to distinguish different objects, rather than to describe a specific order.

[0017] Example 1 like Figure 1 As shown, this embodiment provides a high-elasticity double-corrugated core corrugated paper, including an inner paper 10, a first core paper 20, an interlayer 30, a second core paper 40, and a face paper 60 arranged in sequence. It should be noted that the high elasticity in this embodiment refers to the corrugated paper provided in this embodiment having higher elasticity than the corrugated paper commonly found on the market with one or two layers of corrugated core paper sandwiched between adjacent face papers, and does not refer to the specific level of elasticity.

[0018] Both the first core paper 20 and the second core paper 40 are wavy in shape, each including multiple corrugated portions 21 arranged in a straight line (i.e., wave crests). The arrangement direction of each corrugated portion 21 on the first core paper 20 is the same as that on the second core paper 40. A connecting portion 22 (i.e., wave trough) is formed between two adjacent corrugated portions 21 on the same core paper. Each corrugated portion 21 of the second core paper 20 is pasted on the face paper 50, and each connecting portion 22 of the second core paper 20 is pasted on the interlayer 30. Each connecting portion 22 of the first core paper 40 is pasted on the inner paper 10, and each corrugated portion 21 of the first core paper 20 is pasted on the interlayer 30. The corrugated portions 21 of the first core paper 20 and the connecting portions 21 of the second core paper 40 are arranged in a one-to-one correspondence. In this way, the first core paper 20 can be used to support the second core paper 40, thereby improving the load-bearing capacity of the corrugated paper.

[0019] The interlayer 30 is a stretchable material layer, and its specific material can be set according to actual needs, as long as it can stretch and contract along the arrangement direction of the ribs 21 on the same core paper. In this embodiment, the interlayer 30 is preferably an elastic non-woven fabric. In this way, when under pressure, the two adjacent connecting parts 22 on the second core paper 40 and the two adjacent ribs 21 on the first core paper 20 will move in opposite directions, causing the interlayer 30 to be stretched. After the pressure is removed, the interlayer 30 returns to its original position under the action of elasticity, and the connecting parts 22 and the ribs 21 can quickly return to their original position, resulting in relatively good elastic buffering performance.

[0020] Preferably, the first core paper 20 and / or the second core paper 40 are provided with a plurality of elastic threads 31 interlaced on the corrugated portions 21 of the same core paper. At the positions where these elastic threads 31 contact each corrugated portion 21, adhesive blocks are bonded to the corresponding corrugated portions 21. These adhesive blocks can be obtained by applying adhesive at the corresponding positions. In the same core paper, the elastic threads 31 are arranged in a straight line and parallel to the arrangement direction of the corrugated portions 21. This helps to further improve the elastic cushioning performance of the corrugated paper.

[0021] Example 2 like Figure 2 As shown, the difference between the high-elasticity double-wall corrugated paper core provided in this embodiment and that in Embodiment 1 is that the corrugated paper provided in this embodiment does not have elastic lines 31 (see reference). Figure 1 (As shown), instead of the first core paper 20 and / or the second core paper 40 facing the inner paper 10, a sticker 50 is pasted on the side of the first core paper 20 and / or the second core paper 40. The sticker 50 includes a plurality of low-ridge portions 51 arranged in a straight line. Each low-ridge portion 51 on the same sticker 50 corresponds to each high-ridge portion 21 on the core paper to which the sticker is pasted, and the height of the low-ridge portion 51 is less than the height of the corresponding high-ridge portion 21. It should be noted that the "low" in "low-ridge portion 51" here does not refer to a specific height, but rather indicates that the height of the low-ridge portion 51 is less than the height of the high-ridge portion 21. The height of the high-ridge portion 21 and the low-ridge portion 51 refer to the vertical distance between the highest point of the high-ridge portion 21 or the low-ridge portion 51 and the connecting portion 22 when the corresponding core paper is arranged horizontally and the connecting portion 22 is arranged downwards.

[0022] In the same sticker, two adjacent low-ridge portions 51 may not be connected to each other, or they may be connected by an adhesive portion that is tightly attached to the corresponding connecting portion.

[0023] By setting the sticker 50 to form the low-flute section 51, the elastic cushioning performance of the corrugated paper can be effectively improved, and it also has good load-bearing performance.

[0024] The present invention has been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the above embodiments. Those skilled in the art can make various equivalent substitutions to the present invention based on the prior art, and these substitutions all fall within the protection scope of the present invention.

Claims

1. A high-elasticity double-walled corrugated paperboard core, comprising an inner liner, a first core, an interlayer, a second core, and a face liner arranged in sequence, characterized in that, Both the first core paper and the second core paper include multiple corrugated portions arranged in a straight line. The arrangement direction of the corrugated portions on the first core paper is the same as that on the second core paper. A connecting portion is formed between two adjacent corrugated portions on the same core paper. The corrugated portions of the second core paper are pasted on the face paper, and the connecting portions of the second core paper are pasted on the interlayer. The connecting portions of the first core paper are pasted on the liner paper, and the corrugated portions of the first core paper are pasted on the interlayer. The corrugated portions of the first core paper and the connecting portions of the second core paper are arranged in a one-to-one correspondence. The interlayer is a stretchable material layer.

2. The high-elasticity double-wall corrugated paperboard as described in claim 1, characterized in that, The interlayer is made of elastic nonwoven fabric.

3. The high-elasticity double-wall corrugated paperboard as described in claim 1, characterized in that, The first core paper and / or the second core paper are provided with a plurality of elastic lines that pass through each of the convex portions of the same core paper, and each elastic line is bonded with an adhesive block that is fixedly connected to the corresponding convex portion at the position where it contacts each convex portion. In the same core paper, each elastic line is arranged in a straight line and is arranged parallel to the arrangement direction of each convex portion.

4. The high-elasticity double-wall corrugated paperboard as described in claim 1, characterized in that, A sticker is pasted on the side of the first core paper and / or the second core paper facing the inner paper. The sticker includes a plurality of low-ribbed portions arranged in a straight line. Each low-ribbed portion on the same sticker and each convex portion on the core paper to which the sticker is pasted are arranged in a one-to-one correspondence, and the height of the low-ribbed portion is less than the height of the corresponding convex portion.

5. The high-elasticity double-wall corrugated paperboard as described in claim 4, characterized in that, In the same sticker, two adjacent low-ridge sections are not connected to each other.

6. The high-elasticity double-wall corrugated paperboard as described in claim 4, characterized in that, In the same sticker, there is an adhesive portion that is tightly attached to the corresponding connecting portion between two adjacent low-ridge portions.

Images