CN205326422U - Corrugated cardboard - Google Patents

Abstract

The utility model provides a corrugated cardboard, which supports the corrugated paper between the first panel paper and the second panel paper in a wave shape, and fills the space formed by the corrugated paper and the first panel paper with a plurality of cushioning strips and/or the corrugated paper The space formed with the second panel paper can not only ensure the resilience and cushioning performance of the corrugated cardboard, achieve the shock absorption effect, but also reduce the overall thickness of the corrugated cardboard. Compared with the corrugated cardboard with the same number of layers, the thickness is reduced nearly half, thereby reducing the packaging volume and the amount of packaging materials, increasing the loading capacity, and reducing transportation costs; moreover, the space formed by the first panel paper not filled with cushioning strips and/or the space formed by corrugated paper and the second panel paper is convenient for pressing Folding, improve the creasing plasticity of corrugated cardboard.

Description

a corrugated cardboard

technical field

The utility model belongs to the technical field of cardboard for packaging, in particular to a corrugated cardboard.

Background technique

Corrugated cardboard is a cardboard composed of one or more layers of corrugated paper bonded on a cardboard or between several cardboards. It has good elasticity and extensibility. It is mainly used to make cartons, carton sandwiches and fragile goods. other packaging materials. An existing corrugated cardboard is a five-layer corrugated cardboard 1, as shown in Figure 1a, including: panel paper 11, corrugated paper 12 and core paper 13, and the cushioning properties of corrugated cardboard with the same number of layers can be changed by changing the corrugated cardboard 12. However, after the corrugated cardboard of this structure is compressed, the resilience of the corrugated cardboard 12 is limited, and the compressive and bursting strengths are low.

Another existing corrugated cardboard, as shown in Figure 1b, increases the EPE (ExpandablePolyethylene, expandable polyethylene) spacer 2 between the corrugated cardboard 1 shown in Figure 1a and the corrugated cardboard 1, to improve the resilience and Shock absorbing effect. However, there are following defects in this corrugated cardboard packaging material:

1. The overall thickness of corrugated cardboard is relatively thick, resulting in an increase in the amount of packaging materials and packaging volume, and a decrease in loading capacity, thereby increasing transportation costs;

2. The creasing plasticity of the whole corrugated cardboard is poor.

Therefore, need badly a kind of corrugated cardboard to solve above-mentioned technical problem.

Utility model content

The utility model aims at the above-mentioned shortcomings in the prior art, and provides a corrugated cardboard to solve the problems of large overall thickness and poor creasing plasticity of the corrugated cardboard.

The utility model provides a corrugated cardboard, which comprises a first panel paper, a second panel paper and at least one layer of corrugated paper, the corrugated paper is wave-shaped supported between the first panel paper and the second panel paper, and respectively The panel paper and the second panel paper form a space, and the corrugated cardboard also includes a plurality of cushioning strips, the cushioning strips are arranged on the first panel paper and/or the second panel paper, and fill the gap formed by the corrugated paper and the first panel paper. Space and/or space formed by corrugated paper and second panel paper.

Preferably, the cushioning strip is made of expandable polyethylene.

Preferably, the cushioning strip is in the shape of a triangular prism, and the edge at the top of the cushioning strip is arc-shaped.

Preferably, when the corrugated cardboard is a three-layer corrugated cardboard, the corrugated cardboard is one layer, and the crests and troughs of the corrugated cardboard are connected to the first panel paper and the second panel paper respectively.

Preferably, the cushioning strip is arranged on the first panel paper, and the space formed by the corrugated paper and the first panel paper is filled continuously or at intervals; or, the cushioning strip is arranged on the second panel paper, and the corrugated paper is filled continuously or at intervals Form the space with the second panel paper.

Preferably, the cushioning strips fill the spaces formed by the corrugated paper and the first panel paper at equal intervals, or fill the spaces formed by the corrugated paper and the second panel paper at equal intervals.

Preferably, the cushioning strips include a first cushioning strip and a second cushioning strip, the first cushioning strip is arranged on the first panel paper, and the space formed by the corrugated paper and the first panel paper is filled at intervals; the second cushioning strip The strips are arranged on the second panel paper, and the spaces formed by the corrugated paper and the second panel paper are filled at intervals;

There is at least one space formed by the corrugated paper and the first panel paper and one space formed by the corrugated paper and the second panel paper between the first cushioning strip and the second cushioning strip.

Preferably, when the corrugated cardboard is a five-layer corrugated cardboard, the corrugated cardboard also includes core paper, and the corrugated cardboard has two layers, including a first corrugated cardboard and a second corrugated cardboard, and the first corrugated cardboard is supported on the corrugated cardboard in a wave shape. Between the first panel paper and the core paper, the second corrugated paper is supported between the second panel paper and the core paper in a wave shape;

The troughs of the first corrugated paper are connected with the first panel paper, the crests of the second corrugated paper are connected with the second panel paper, and the crests of the first corrugated paper and the troughs of the second corrugated paper are respectively connected with the two sides of the core paper.

Preferably, the cushioning strip includes a first cushioning strip and a second cushioning strip, the first cushioning strip is arranged on the first panel paper, and fills the space formed by the first corrugated paper and the first panel paper continuously or at intervals; The second cushioning strip is arranged on the second panel paper, and fills the space formed by the second corrugated paper and the second panel paper continuously or at intervals;

The first cushioning strip and the second cushioning strip are symmetrical about the core paper.

Preferably, the first cushioning strips fill the spaces formed by the first corrugated paper and the first panel paper at equal intervals, and the second cushioning strips fill the spaces formed by the second corrugated paper and the second panel paper at equal intervals.

The utility model has the following beneficial effects:

The corrugated board provided by the utility model supports the corrugated paper between the first panel paper and the second panel paper in a wave shape, and fills the space formed by the corrugated paper and the first panel paper with a plurality of cushioning strips and/or the corrugated paper The space formed with the second panel paper can not only ensure the resilience and cushioning performance of the corrugated cardboard, achieve the shock absorption effect, but also reduce the overall thickness of the corrugated cardboard. Compared with the corrugated cardboard with the same number of layers, the thickness is reduced nearly half, thereby reducing the packaging volume and the amount of packaging materials, increasing the loading capacity, and reducing transportation costs; moreover, the space formed by the first panel paper not filled with cushioning strips and/or the space formed by corrugated paper and the second panel paper is convenient for pressing Folding, improve the creasing plasticity of corrugated cardboard.

Description of drawings

Fig. 1a is one of the structural diagrams of existing corrugated cardboard;

Fig. 1 b is the second structure diagram of existing corrugated cardboard;

Figure 2a is a structural schematic diagram of a three-layer corrugated cardboard that continuously fills the space formed by the corrugated paper and the first panel paper with the cushioning strip provided by the present invention;

Figure 2b is a structural schematic diagram of a three-layer corrugated cardboard that fills the space formed by the corrugated paper and the first panel paper at intervals provided by the utility model;

Figure 2c is a structural schematic diagram of a three-layer corrugated cardboard that continuously fills the space formed by the corrugated paper and the second panel paper with the cushioning strip provided by the present invention;

Fig. 2d is a structural schematic diagram of a three-layer corrugated cardboard that fills the space formed by the corrugated cardboard and the second panel paper at intervals provided by the utility model;

Figure 2e is a structural schematic diagram of a three-layer corrugated cardboard that fills the space formed by the corrugated paper and the first panel paper and the space formed by the corrugated paper and the second panel paper at intervals provided by the cushioning strip provided by the present invention;

Figure 3a is a structural schematic diagram of a five-layer corrugated cardboard that continuously fills the space formed by the corrugated paper and the first panel paper and the space formed by the corrugated paper and the second panel paper by the cushioning strip provided by the present invention;

Figure 3b is a structural schematic diagram of a five-layer corrugated cardboard that fills the space formed by the corrugated paper and the first panel paper and the space formed by the corrugated paper and the second panel paper at intervals provided by the cushioning strip provided by the present invention;

Fig. 4 is a schematic diagram of the stress of the five-layer corrugated cardboard in Fig. 3a.

Reference signs:

1. Corrugated cardboard; 2. EPE block; 11. Panel paper; 12. Corrugated paper;

13, 35, core paper; 21, 31, first panel paper; 22, 32, second panel paper;

23. Corrugated paper; 24. Shock absorbing strip; 241, 341. The first cushioning strip;

242, 342, the second shock absorber; 331, the first corrugated paper; 332, the second corrugated paper;

detailed description

In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

The utility model provides a corrugated cardboard, which comprises a first panel paper, a second panel paper and at least one layer of corrugated paper, the corrugated paper is wave-shaped supported between the first panel paper and the second panel paper, and respectively The panel paper and the second panel paper form a space. The corrugated board also includes a plurality of cushioning strips, the cushioning strips are arranged on the first panel and/or the second panel, and fill the space formed by the corrugated paper and the first panel paper and/or the space formed by the corrugated paper and the second panel paper. space.

By supporting the corrugated paper between the first panel paper and the second panel paper in a wave shape, and filling the space formed by the corrugated paper and the first panel paper and/or the space formed by the corrugated paper and the second panel paper, Not only can it ensure the resilience and cushioning properties of corrugated cardboard to achieve shock absorption, but it can also reduce the overall thickness of corrugated cardboard. Compared with corrugated cardboard with the same number of layers, the thickness is reduced by nearly half, thereby reducing packaging volume and The amount of packaging materials increases the loading capacity and reduces the transportation cost; moreover, the space formed by the first panel paper not filled with cushioning strips and/or the space formed by corrugated paper and the second panel paper is convenient for creasing, improving the creasing plasticity of corrugated cardboard .

Since the expandable polyethylene EPE has the characteristics of high elasticity, lightness, flexibility, and bendability, it is preferable that the cushioning strip can be made of EPE material, so that it can absorb and disperse the impact force and play a buffering effect .

In order to match the shape of the corrugated paper and better fill the space formed by the corrugated paper and the first panel paper and the space formed by the corrugated paper and the second panel paper, preferably, the cushioning strip is in the shape of a triangular prism, and the cushioning The rib at the top of the bar is arc-shaped.

It should be noted that the shape of the shock absorbing strip is not limited to a triangular prism in which the edge at the top is arc-shaped, for example, it may also be a rectangle. Compared with other shaped cushioning strips, the triangular prism-shaped cushioning strips with arc-shaped edges at the top fit more closely with the wavy corrugated paper, and have better cushioning and compressive effects.

In order to clearly illustrate the technical solution of the present utility model, the following will be described in detail by taking three-layer corrugated cardboard and five-layer corrugated cardboard as examples in conjunction with accompanying drawings 2a-2e and accompanying drawings 3a-3b respectively.

As shown in Figures 2a-2e, the three-layer corrugated cardboard includes: a first panel paper 21, a second panel paper 22, a layer of corrugated paper 23 and a plurality of cushioning strips 24, and the corrugated paper 23 is supported on the first panel paper 21 in a wave shape. Between the corrugated paper 23 and the second panel paper 22, and form spaces with the first panel paper 21 and the second panel paper 22 respectively, the crests and troughs of the corrugated paper 23 are connected with the first panel paper 21 and the second panel paper 22 respectively. The cushioning strip 24 is disposed on the first panel paper 21 and/or the second panel paper 22 , and fills the space formed by the corrugated paper 23 and the first panel paper 21 and/or the space formed by the corrugated paper 23 and the second panel paper 22 .

There are various positions of the cushioning strips 24 , which can be separately arranged on the first panel paper 21 or the second panel paper 22 . As shown in FIG. 2 a , the cushioning strip 24 is only disposed on the first panel paper 21 and continuously fills the space formed by the corrugated paper 23 and the first panel paper 21 . As shown in FIG. 2 b , the cushioning strips 24 are only arranged on the first panel paper 21 and fill the space formed by the corrugated paper 23 and the first panel paper 21 at intervals. As shown in FIG. 2 c , the cushioning strip 24 is only disposed on the second panel paper 22 and continuously fills the space formed by the corrugated paper 23 and the second panel paper 22 . As shown in FIG. 2 d , the cushioning strip 24 is only disposed on the second panel paper 22 and fills the space formed by the corrugated paper 23 and the second panel paper 22 at intervals.

As shown in FIG. 2 b , preferably, the cushioning strips 24 are equally spaced to fill the space formed by the corrugated paper 23 and the first panel paper 21 . As shown in FIG. 2 d , the cushioning strips 24 are equally spaced to fill the space formed by the corrugated paper 23 and the second panel paper 22 .

The space filled by the cushioning strips 24 on the corrugated cardboard can withstand relatively large external forces, while the space not filled by the cushioning strips 24 has poor compression resistance. The corrugated paper 23 and the first panel paper 21 are filled with the cushioning strips 24 at equal intervals. The formed space or the space formed by the corrugated cardboard 23 and the second panel paper 22 can make the corrugated cardboard be stressed evenly, improve the compressive strength and prolong the service life.

The cushioning strips 24 can also be respectively arranged on the first panel paper 21 and the second panel paper 22. As shown in FIG. The vibration bar 241 is disposed on the first panel paper 21 and fills the space formed by the corrugated paper 23 and the first panel paper 21 . The second cushioning strip 242 is disposed on the second panel paper 22 and fills the space formed by the corrugated paper 23 and the second panel paper 22 . There is at least one space formed by the corrugated paper 23 and the first panel paper 21 and one space formed by the corrugated paper 23 and the second panel paper 22 between the first cushioning strip 241 and the second cushioning strip 242 .

It can be seen from Fig. 2a-Fig. 2e that there are spaces not filled with cushioning strips in each of the above-mentioned corrugated cardboards, which facilitates the creasing of the corrugated cardboards and improves the creasing plasticity of the corrugated cardboards.

It should be noted that the arrangement of several cushioning strips shown in Figs. 2a-2e are only illustrative examples, and other arrangements of the cushioning strips will not be repeated here.

As shown in Figures 3a-3b, the five-layer corrugated board includes: first panel paper 31, second panel paper 32, two layers of corrugated paper (including first corrugated paper 331 and second corrugated paper 332), core paper 35, first cushioning Bar 341 and the second cushioning bar 342. The first corrugated paper 331 is supported between the first panel paper 31 and the core paper 35 in a wave shape, and the second corrugated paper 332 is supported between the second panel paper 32 and the core paper 35 in a wave shape. The troughs of the first corrugated paper 331 are connected to the first panel paper 31, the crests of the second corrugated paper 332 are connected to the second panel paper 32, and the crests of the first corrugated paper 331 and the troughs of the second corrugated paper 332 are connected to the core paper 35 respectively. connected on both sides.

As shown in FIG. 3 a , the first cushioning strip 341 is disposed on the first panel paper 31 to continuously fill the space formed by the first corrugated paper 331 and the first panel paper 31 . The second cushioning strip 342 is disposed on the second panel paper 32 to continuously fill the space formed by the second corrugated paper 332 and the second panel paper 32 . The first cushioning strip 341 and the second cushioning strip 342 are symmetrical about the core paper 35 .

As shown in FIG. 3 b , the first cushioning strip 341 is disposed on the first panel paper 31 to fill the space formed by the first corrugated paper 331 and the first panel paper 31 . The second cushioning strip 342 is disposed on the second panel paper 32 to fill the space formed by the second corrugated paper 332 and the second panel paper 32 . The first cushioning strip 341 and the second cushioning strip 342 are symmetrical about the core paper 35 .

As shown in Figure 3b, preferably, the first cushioning strips 341 fill the space formed by the first corrugated paper 331 and the first panel paper 31 at equal intervals, and the second cushioning strips 342 fill the spaces between the second corrugated paper 332 and the second panel paper at equal intervals. Panel paper 32 forms the space.

As shown in Fig. 4, by making the first cushioning strip 341 and the second cushioning strip 342 symmetrical with respect to the core paper 35, when the corrugated cardboard is subjected to an external force N, the upper and lower layers of cushioning strips respectively generate a response force and share the impact. force, thereby increasing the compressive strength.

The production process of the five-layer corrugated cardboard is as follows: First, use rollers to evenly paste a layer of cushioning strips on the first panel paper, and then use equidistant corrugated rollers to paste a layer of corrugated paper, and then paste the two layers with the same cushioning strips. Corrugated cardboard and corrugated paper are pressed and bonded together, and a core paper spacer is used in the middle.

The corrugated cardboard provided by the utility model is a high-buffering corrugated cardboard. Under the premise that the thickness of the corrugated cardboard remains unchanged, it not only has the compressive and bursting strength and folding plasticity of the normal corrugated cardboard, but also the surface can be used for packaging and printing. With the high resilience and cushioning properties of EPE material, it can reduce the cushioning material of the overall packaging, reduce the packaging volume, increase the loading capacity, and achieve the purpose of convenient transportation and low cost.

It can be understood that, the above embodiments are only exemplary embodiments adopted to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present utility model, and these variations and improvements are also regarded as the protection scope of the present utility model.

Claims (10)

1. A corrugated cardboard, comprising a first panel paper, a second panel paper and at least one layer of corrugated paper, the corrugated paper is supported between the first panel paper and the second panel paper in a wave shape, and is respectively connected with the first panel paper Forming a space with the second panel paper, it is characterized in that the corrugated cardboard also includes a plurality of cushioning strips, the cushioning strips are arranged on the first panel paper and/or the second panel paper, and are filled with the corrugated paper and the first panel paper The space formed and/or the space formed by the corrugated paper and the second panel paper. 2. The corrugated cardboard according to claim 1, wherein the shock absorbing strip is made of expandable polyethylene. 3 . The corrugated cardboard according to claim 1 , wherein the cushioning strip is in the shape of a triangular prism, and the edge at the top of the cushioning strip is in the shape of an arc. 4 . 4. The corrugated cardboard according to any one of claims 1-3, wherein when the corrugated cardboard is a three-layer corrugated cardboard, the corrugated cardboard is one layer, and the crests and troughs of the corrugated cardboard are respectively Connect with first panel paper and second panel paper. 5. The corrugated cardboard according to claim 4, wherein the cushioning strips are arranged on the first panel paper, and fill the space formed by the corrugated paper and the first panel paper continuously or at intervals; or, the cushioning strips Set on the second panel paper, fill the space formed by the corrugated paper and the second panel paper continuously or at intervals. 6. The corrugated cardboard according to claim 5, wherein the cushioning strips fill the spaces formed by the corrugated cardboard and the first panel paper at equal intervals, or fill the spaces formed by the corrugated cardboard and the second panel paper at equal intervals . 7. The corrugated cardboard according to claim 4, wherein the shock absorbing strips comprise a first shock absorbing strip and a second shock absorbing strip, the first shock absorbing strips are arranged on the first panel paper, and the intervals are filled with corrugated paper The space formed with the first panel paper; the second cushioning strip is arranged on the second panel paper, and the space formed by the corrugated paper and the second panel paper is filled at intervals; There is at least one space formed by the corrugated paper and the first panel paper and one space formed by the corrugated paper and the second panel paper between the first cushioning strip and the second cushioning strip. 8. The corrugated cardboard according to any one of claims 1-3, wherein when the corrugated cardboard is a five-layer corrugated cardboard, the corrugated cardboard also includes a core paper, and the corrugated cardboard is two layers, comprising The first corrugated paper and the second corrugated paper, the first corrugated paper is supported between the first panel paper and the core paper in a wave shape, and the second corrugated paper is supported between the second panel paper and the core paper in a wave shape; The troughs of the first corrugated paper are connected with the first panel paper, the crests of the second corrugated paper are connected with the second panel paper, and the crests of the first corrugated paper and the troughs of the second corrugated paper are respectively connected with the two sides of the core paper. 9. The corrugated cardboard according to claim 8, wherein the shock absorbing strips comprise first shock absorbing strips and second shock absorbing strips, and the first shock absorbing strips are arranged on the first panel paper, continuously or at intervals filling the space formed by the first corrugated paper and the first panel paper; the second cushioning strip is arranged on the second panel paper, filling the space formed by the second corrugated paper and the second panel paper continuously or at intervals; The first cushioning strip and the second cushioning strip are symmetrical about the core paper. 10. The corrugated cardboard according to claim 9, characterized in that, the first cushioning strips are equally spaced to fill the space formed by the first corrugated paper and the first panel paper, and the second cushioning strips are equally spaced to fill the space formed by the first panel paper. The space formed by the second corrugated paper and the second panel paper.