Corrugated paper composite structure

Abstract

The utility model discloses a kind of corrugated paper composite structures, including at least one first layer, at least one corrugated layer, at least one second layer, the first layer and second layer are along Z-axis direction distribution, the corrugated layer is set between adjacent first layer and second layer;The composite structure is formed by at least one first layer, at least one corrugated layer, at least one second layer, and forms composite structure, wherein, using the peak portion and valley portion of corrugated layer, the projection of each peak portion and valley portion on the plane in X-axis and Y-axis direction presents multi-bending structure, and the multi-bending structure includes at least one V-shaped section, so that multiple connecting points between peak portion and first layer, multiple connecting points between valley portion and second layer, all not located in same X-axis and Y-axis linear direction, so as to improve overall bending resistance, tensile, tear resistance and other properties, so that crease after forming carton, not easy to tear.

Description

Technical Field

[0001] This utility model relates to the field of corrugated paper technology, and in particular to a corrugated paper composite structure. Background Technology

[0002] Corrugated cardboard is a multi-layered adhesive, consisting of at least one layer of corrugated core paper (commonly known as "corrugated sheet", "corrugated paper", "corrugated core", "corrugated base paper") and one layer of cardboard (also known as "boxboard"). It has high mechanical strength and can withstand collisions and drops during handling. Existing corrugated cardboard usually has a multi-layered structure with corrugated corrugations to withstand collisions and drops during handling. However, with higher requirements for packaging and transportation, the overall performance requirements for corrugated cardboard are also increasing. Among these requirements, tearing is prone to occur at the bending points after the corrugated cardboard is formed into a box structure. Announcement No. CN219820886U discloses a composite corrugated cardboard, relating to the field of cardboard technology. The key technical points are: it includes an upper surface layer and a lower surface layer, with a reinforcing layer between them. The reinforcing layer includes an upper corrugated board and a lower corrugated board, both of which include a first corrugated portion. A second corrugated portion is provided between adjacent first corrugated portions. The first corrugated portion includes several first protruding ribs, and the second corrugated portion includes several second protruding ribs, with the first and second protruding ribs perpendicular to each other. This invention, by providing both the first and second corrugated portions, ensures that bending forces act simultaneously on both portions, guaranteeing that one provides sufficient strength. However, although this corrugated cardboard adds an extra corrugated portion, it is still prone to tearing at bends. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a corrugated paper composite structure with high overall strength.

[0004] To achieve the above objectives, the present invention provides the following solution: a corrugated paper composite structure, comprising at least one first layer, at least one corrugated layer, and at least one second layer, wherein the first layer and the second layer are distributed along the Z-axis direction, and the corrugated layer is disposed between adjacent first layers and second layers;

[0005] The corrugated layer includes multiple peaks and valleys distributed at intervals along the X-axis. The projection of each peak and valley onto the plane containing the X-axis and Y-axis forms a multi-segment bending structure, and the multi-segment bending structure includes at least one V-shaped segment. The X-axis, Y-axis, and Z-axis are perpendicular to each other.

[0006] The beneficial effects of this utility model are as follows: strong overall performance. The composite structure is formed by at least one first layer, at least one corrugated layer, and at least one second layer. The peaks and valleys of the corrugated layers are utilized, and the projection of each peak and valley on the plane in the X and Y directions is a multi-segment bending structure. The multi-segment bending structure includes at least one V-shaped segment. In this way, the multiple connection points between the peak and the first layer, and the multiple connection points between the valley and the second layer are not located in the same X and Y straight direction. This improves the overall bending resistance, tensile strength, and tear resistance, making the creases after forming the carton less prone to tearing, and the overall structural strength is high.

[0007] Furthermore, the valley section is provided with filling particles, which are connected to the first layer. With the above structure, this invention provides support for the first layer, has a buffering function, and improves the overall impact resistance and tear resistance.

[0008] Furthermore, the peaks and valleys extend along the Y-axis direction, respectively.

[0009] Furthermore, a waterproof layer is provided on the outer surface of the first layer. This invention, employing the above structure, achieves a specific waterproof effect.

[0010] Furthermore, the first layer is bonded to the waterproof layer with adhesive.

[0011] Furthermore, the first layer and the corrugated layer, and the second layer and the corrugated layer are bonded together with adhesive.

[0012] Furthermore, there are two of each of the first layer and the corrugated layer, with the two first layers distributed along the Z-axis, and the second layer located between the two first layers. By adopting the above structure, this invention achieves a five-layer structure.

[0013] Furthermore, each of the aforementioned peaks and valleys includes two bent structures that form a V-shaped segment, with the V-shaped direction of each of the aforementioned peaks and valleys being the same.

[0014] Furthermore, the multi-segment bending structure includes multiple V-shaped segments and multiple inverted V-shaped segments, which are sequentially and alternately connected along the Y-axis. The V-shaped directions of each peak and valley are the same, and the inverted V-shaped directions of each peak and valley are the same. By adopting the above structure, this invention further improves the overall tear resistance, tensile strength, and bending resistance. Attached Figure Description

[0015] Figure 1 For the front view of this utility model Figure 1 .

[0016] Figure 2Top view of this utility model Figure 1 (No filler particles are shown).

[0017] Figure 3 For the front view of this utility model Figure 2 .

[0018] Figure 4 Top view of this utility model Figure 2 (No filler particles are shown).

[0019] Among them, 1 is the first layer, 2 is the corrugated layer, 21 is the peak, 22 is the valley, 23 is the filling particles, and 3 is the second layer. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Example 1

[0022] See appendix Figure 1 To be continued Figure 2 As shown, a corrugated paper composite structure includes a first layer 1, a corrugated layer 2, and a second layer 3. The first layer 1 and the second layer 3 are distributed along the Z-axis direction, and a corrugated layer 2 is provided between adjacent first layers 1 and second layers 3.

[0023] The corrugated layer 2 includes multiple peaks 21 and valleys 22 that are spaced apart along the X-axis. The projection of each peak 21 and valley 22 onto the planes in the X-axis and Y-axis directions is a multi-segmented bent structure, and the multi-segmented bent structure includes a V-shaped segment. The X-axis, Y-axis and Z-axis are perpendicular to each other.

[0024] In this embodiment, the valley 22 is provided with filling particles 23, which are connected to the first layer 1. Multiple filling particles 23 are provided in the valley 22, and the filling particles 23 can be randomly distributed in the valley 22. In order to improve the buffering effect, some of the filling particles 23 can be located between the bends of the V-shaped segments of the two peaks 21. In this way, when the bend of the V-shaped segment of one peak 21 touches the adjacent peak 21, the filling particles can buffer the impact, thereby achieving a buffering effect and reducing the tearing of the corrugated layer 2. Moreover, the filling particles 23 are used to connect the first layer 1, effectively supporting the first layer 1. When subjected to impact, the damage to the corrugated layer 2 is reduced, and the overall impact resistance is improved.

[0025] In this embodiment, during the production of the corrugated layer 2, multiple peaks 21 and multiple valleys 22 of the corrugated layer 2 are rolled out by corresponding corrugated rollers, and then the filling particles 23 are randomly sprinkled into the multiple valleys 22 of the corrugated layer 2.

[0026] In this embodiment, the peak 21 and the valley 22 extend along the Y-axis direction, respectively.

[0027] In this embodiment, a waterproof layer is provided on the outer side of the first layer 1; the first layer 1 and the waterproof layer are bonded together with adhesive, and the overall waterproof effect is improved by providing the waterproof layer.

[0028] In this embodiment, the first layer 1 and the corrugated layer 2, and the second layer 3 and the corrugated layer 2 are respectively bonded together with adhesive.

[0029] Each peak 21 and valley 22 includes two bent structures, which together form a V-shaped segment. The V-shaped directions of each peak 21 and valley 22 are the same.

[0030] In this embodiment, by forming a V-shaped structure for each peak 21 and valley 22 of the corrugated layer 2, the impact resistance of the overall corrugated cardboard in the Z-axis direction is improved, reducing structural damage such as tearing of the corrugated cardboard after being subjected to external forces. Combined with the filler particles 23, the overall impact resistance, tear resistance, and bending resistance are greatly improved, and the overall strength of the corrugated cardboard is also improved.

[0031] Furthermore, since corrugated cardboard is usually made into cartons, some corrugated cardboard needs to be folded to form a box structure. However, the folded area of ​​the corrugated cardboard is prone to tearing. In this embodiment, each peak 21 and valley 22 forms a V-shaped structure, so that the multiple connection points between a peak 21 and the first layer 1, and the multiple connection points between the valley 22 and the second layer 3 are not located on the same straight line of the X and Y axes. This greatly enhances the overall tensile and tear resistance. At the fold of the corrugated cardboard, due to the effect of the above-mentioned connection points, the bend is not easy to tear, and the tensile and tear resistance in the X, Y, and Z axis directions is strong, thus making the overall tear and bending resistance strong. Example 2

[0032] See appendix Figure 1 and attached Figure 4 As shown, a corrugated paper composite structure includes two first layers 1, two corrugated layers 2, and two second layers 3. The first layers 1 and the second layers 3 are distributed along the Z-axis direction, and a corrugated layer 2 is provided between adjacent first layers 1 and second layers 3.

[0033] The corrugated layer 2 includes multiple peaks 21 and valleys 22 that are spaced apart along the X-axis. The projection of each peak 21 and valley 22 onto the planes in the X-axis and Y-axis directions is a multi-segmented bent structure, and the multi-segmented bent structure includes a V-shaped segment. The X-axis, Y-axis and Z-axis are perpendicular to each other.

[0034] In this embodiment, the valley 22 is provided with filling particles 23, which are connected to the first layer 1. Multiple filling particles 23 are provided in the valley 22, and the filling particles 23 can be randomly distributed in the valley 22. In order to improve the buffering effect, some of the filling particles 23 can be located between the bends of the V-shaped segments of the two peaks 21. In this way, when the bend of the V-shaped segment of one peak 21 touches the adjacent peak 21, the filling particles can buffer the impact, thereby achieving a buffering effect and reducing the tearing of the corrugated layer 2. Moreover, the filling particles 23 are used to connect the first layer 1, effectively supporting the first layer 1. When subjected to impact, the damage to the corrugated layer 2 is reduced, and the overall impact resistance is improved.

[0035] In this embodiment, during the production of the corrugated layer 2, multiple peaks 21 and multiple valleys 22 of the corrugated layer 2 are rolled out by corresponding corrugated rollers, and then the filling particles 23 are randomly sprinkled into the multiple valleys 22 of the corrugated layer 2.

[0036] In this embodiment, the peak 21 and the valley 22 extend along the Y-axis direction, respectively.

[0037] In this embodiment, a waterproof layer is provided on the outer side of the first layer 1; the first layer 1 and the waterproof layer are bonded together with adhesive, and the overall waterproof effect is improved by providing the waterproof layer.

[0038] In this embodiment, the first layer 1 and the corrugated layer 2, and the second layer 3 and the corrugated layer 2 are respectively bonded together with adhesive.

[0039] Each peak 21 and valley 22 includes two bent structures, which together form a V-shaped segment. The V-shaped directions of each peak 21 and valley 22 are the same.

[0040] In this embodiment, there are two first layers 1 and two corrugated layers 2. The two first layers 1 are arranged along the Z-axis, and the second layer 3 is located between the two first layers 1.

[0041] In this embodiment, by forming a V-shaped structure for each peak 21 and valley 22 of the corrugated layer 2, the impact resistance of the overall corrugated cardboard in the Z-axis direction is improved, reducing structural damage such as tearing of the corrugated cardboard after being subjected to external forces. Combined with the filler particles 23, the overall impact resistance, tear resistance, and bending resistance are greatly improved, and the overall strength of the corrugated cardboard is also improved.

[0042] Furthermore, since corrugated cardboard is usually made into cartons, some corrugated cardboard needs to be folded to form a box structure. However, the folded area of ​​the corrugated cardboard is prone to tearing. In this embodiment, each peak 21 and valley 22 forms a V-shaped structure, so that the multiple connection points between a peak 21 and the first layer 1, and the multiple connection points between the valley 22 and the second layer 3 are not located on the same straight line of the X and Y axes. This greatly enhances the overall tensile and tear resistance. At the fold of the corrugated cardboard, due to the effect of the above-mentioned connection points, the bend is not easy to tear, and the tensile and tear resistance in the X, Y, and Z axis directions is strong, thus making the overall tear and bending resistance strong. Example 3

[0043] See appendix Figure 2 and attached Figure 3 As shown, it includes a first layer 1, a corrugated layer 2, and a second layer 3. The first layer 1 and the second layer 3 are distributed along the Z-axis direction, and a corrugated layer 2 is set between adjacent first layers 1 and second layers 3.

[0044] The corrugated layer 2 includes multiple peaks 21 and valleys 22 that are spaced apart along the X-axis. The projection of each peak 21 and valley 22 onto the planes in the X-axis and Y-axis directions is a multi-segmented bent structure, and the multi-segmented bent structure includes a V-shaped segment. The X-axis, Y-axis and Z-axis are perpendicular to each other.

[0045] In this embodiment, the valley 22 is provided with filling particles 23, which are connected to the first layer 1. Multiple filling particles 23 are provided in the valley 22, and the filling particles 23 can be randomly distributed in the valley 22. In order to improve the buffering effect, some of the filling particles 23 can be located between the bends of the V-shaped segments of the two peaks 21. In this way, when the bend of the V-shaped segment of one peak 21 touches the adjacent peak 21, the filling particles can buffer the impact, thereby achieving a buffering effect and reducing the tearing of the corrugated layer 2. Moreover, the filling particles 23 are used to connect the first layer 1, effectively supporting the first layer 1. When subjected to impact, the damage to the corrugated layer 2 is reduced, and the overall impact resistance is improved.

[0046] In this embodiment, during the production of the corrugated layer 2, multiple peaks 21 and multiple valleys 22 of the corrugated layer 2 are rolled out by corresponding corrugated rollers, and then the filling particles 23 are randomly sprinkled into the multiple valleys 22 of the corrugated layer 2.

[0047] In this embodiment, the peak 21 and the valley 22 extend along the Y-axis direction, respectively.

[0048] In this embodiment, a waterproof layer is provided on the outer side of the first layer 1; the first layer 1 and the waterproof layer are bonded together with adhesive, and the overall waterproof effect is improved by providing the waterproof layer.

[0049] In this embodiment, the first layer 1 and the corrugated layer 2, and the second layer 3 and the corrugated layer 2 are respectively bonded together with adhesive.

[0050] The multi-segment bending structure includes multiple V-shaped segments and multiple inverted V-shaped segments. The multiple V-shaped segments and multiple inverted V-shaped segments are sequentially staggered along the Y-axis direction. The V-shaped directions of each peak 21 and valley 22 are the same, and the inverted V-shaped directions of each peak 21 and valley 22 are the same.

[0051] In this embodiment, by forming a V-shaped structure for each peak 21 and valley 22 of the corrugated layer 2, the impact resistance of the overall corrugated cardboard in the Z-axis direction is improved, reducing structural damage such as tearing of the corrugated cardboard after being subjected to external forces. Combined with the filler particles 23, the overall impact resistance, tear resistance, and bending resistance are greatly improved, and the overall strength of the corrugated cardboard is also improved.

[0052] Furthermore, since corrugated cardboard is usually made into cartons, some corrugated cardboard needs to be folded to form a box structure. However, the folded area of ​​the corrugated cardboard is prone to tearing. In this embodiment, each peak 21 and valley 22 forms a V-shaped structure, so that the multiple connection points between a peak 21 and the first layer 1, and the multiple connection points between the valley 22 and the second layer 3 are not located on the same straight line of the X and Y axes. This greatly enhances the overall tensile and tear resistance. At the fold of the corrugated cardboard, due to the effect of the above-mentioned connection points, the bend is not easy to tear, and the tensile and tear resistance in the X, Y, and Z axis directions is strong, thus making the overall tear resistance and bending resistance strong. Example 4

[0053] See appendix Figure 3 and attached Figure 4 As shown, a corrugated paper composite structure includes two first layers 1, two corrugated layers 2, and two second layers 3. The first layers 1 and the second layers 3 are distributed along the Z-axis direction, and a corrugated layer 2 is provided between adjacent first layers 1 and second layers 3.

[0054] The corrugated layer 2 includes multiple peaks 21 and valleys 22 that are spaced apart along the X-axis. The projection of each peak 21 and valley 22 onto the planes in the X-axis and Y-axis directions is a multi-segmented bent structure, and the multi-segmented bent structure includes a V-shaped segment. The X-axis, Y-axis and Z-axis are perpendicular to each other.

[0055] In this embodiment, the valley 22 is provided with filling particles 23, which are connected to the first layer 1. Multiple filling particles 23 are provided in the valley 22, and the filling particles 23 can be randomly distributed in the valley 22. In order to improve the buffering effect, some of the filling particles 23 can be located between the bends of the V-shaped segments of the two peaks 21. In this way, when the bend of the V-shaped segment of one peak 21 touches the adjacent peak 21, the filling particles can buffer the impact, thereby achieving a buffering effect and reducing the tearing of the corrugated layer 2. Moreover, the filling particles 23 are used to connect the first layer 1, effectively supporting the first layer 1. When subjected to impact, the damage to the corrugated layer 2 is reduced, and the overall impact resistance is improved.

[0056] In this embodiment, during the production of the corrugated layer 2, multiple peaks 21 and multiple valleys 22 of the corrugated layer 2 are rolled out by corresponding corrugated rollers, and then the filling particles 23 are randomly sprinkled into the multiple valleys 22 of the corrugated layer 2.

[0057] In this embodiment, the peak 21 and the valley 22 extend along the Y-axis direction, respectively.

[0058] In this embodiment, a waterproof layer is provided on the outer side of the first layer 1; the first layer 1 and the waterproof layer are bonded together with adhesive, and the overall waterproof effect is improved by providing the waterproof layer.

[0059] In this embodiment, the first layer 1 and the corrugated layer 2, and the second layer 3 and the corrugated layer 2 are respectively bonded together with adhesive.

[0060] The multi-segment bending structure includes multiple V-shaped segments and multiple inverted V-shaped segments. The multiple V-shaped segments and multiple inverted V-shaped segments are sequentially staggered along the Y-axis direction. The V-shaped directions of each peak 21 and valley 22 are the same, and the inverted V-shaped directions of each peak 21 and valley 22 are the same.

[0061] In this embodiment, there are two first layers 1 and two corrugated layers 2. The two first layers 1 are arranged along the Z-axis, and the second layer 3 is located between the two first layers 1.

[0062] In this embodiment, by forming a V-shaped structure for each peak 21 and valley 22 of the corrugated layer 2, the impact resistance of the overall corrugated cardboard in the Z-axis direction is improved, reducing structural damage such as tearing of the corrugated cardboard after being subjected to external forces. Combined with the filler particles 23, the overall impact resistance, tear resistance, and bending resistance are greatly improved, and the overall strength of the corrugated cardboard is also improved.

[0063] Furthermore, since corrugated cardboard is usually made into cartons, some corrugated cardboard needs to be folded to form a box structure. However, the folded area of ​​the corrugated cardboard is prone to tearing. In this embodiment, each peak 21 and valley 22 forms a V-shaped structure, so that the multiple connection points between a peak 21 and the first layer 1, and the multiple connection points between the valley 22 and the second layer 3 are not located on the same straight line of the X and Y axes. This greatly enhances the overall tensile and tear resistance. At the fold of the corrugated cardboard, due to the effect of the above-mentioned connection points, the bend is not easy to tear, and the tensile and tear resistance in the X, Y, and Z axis directions is strong, thus making the overall tear and bending resistance strong.

[0064] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Any person skilled in the art can make more possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments, without departing from the scope of the technical solution of this utility model. Therefore, all equivalent changes made based on the concept of this utility model without departing from the content of the technical solution of this utility model should be covered within the protection scope of this utility model.

Claims

1. A corrugated paper composite structure, comprising at least one first layer (1), at least one corrugated layer (2), and at least one second layer (3), characterized in that: The first layer (1) and the second layer (3) are distributed along the Z-axis direction, and the corrugated layer (2) is provided between adjacent first layers (1) and second layers (3). The corrugated layer (2) includes multiple peaks (21) and valleys (22) distributed at intervals along the X-axis. The projection of each peak (21) and valley (22) on the plane in the X-axis and Y-axis directions is a multi-segment bending structure, and the multi-segment bending structure includes at least one V-shaped segment. The X-axis, Y-axis and Z-axis are perpendicular to each other.

2. A corrugated paper composite structure according to claim 1, characterized in that: The valley (22) is provided with filling particles (23), which are connected to the first layer (1).

3. A corrugated paper composite structure according to claim 1, characterized in that: The peak (21) and valley (22) extend along the Y-axis.

4. A corrugated paper composite structure according to claim 1, characterized in that: The outer surface of the first layer (1) is provided with a waterproof layer.

5. The corrugated paper composite structure according to claim 1, characterized in that: The first layer (1) is bonded to the waterproof layer with adhesive.

6. A corrugated paper composite structure according to claim 1, wherein: The first layer (1) and the corrugated layer (2) are bonded together with glue, and the second layer (3) and the corrugated layer (2) are bonded together with glue.

7. A corrugated paper composite structure according to claim 1, wherein: The number of the first layer (1) and the corrugated layer (2) are both two. The two first layers (1) are arranged along the Z-axis direction, and the second layer (3) is located between the two first layers (1).

8. A corrugated paper composite structure according to claim 1 or 7, characterized in that: Each of the peaks (21) and valleys (22) includes two bent structures that form a V-shaped segment, and the V-shaped directions of each of the peaks (21) and valleys (22) are the same.

9. A corrugated paper composite structure according to claim 1 or 7, characterized in that: The multi-segment bending structure includes multiple V-shaped segments and multiple inverted V-shaped segments. The multiple V-shaped segments and multiple inverted V-shaped segments are sequentially staggered along the Y-axis direction. The V-shaped directions of each peak (21) and valley (22) are the same, and the inverted V-shaped directions of each peak (21) and valley (22) are the same.

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