Corrugated board and carton

Abstract

The application relates to a corrugated paperboard and a carton, which comprises a surface layer, a corrugated core layer and an inner layer arranged in sequence, the protruding positions of the corrugated core layer are connected to the surface layer and the inner layer respectively, gaps formed by the corrugated core layer, the surface layer and the inner layer are all filled with air column bags, the air column bags are arranged in close contact with the corrugated core layer, the surface layer and the inner layer, the air column bags are filled with air to make the air column bags swell, and hot melt material can be injected into the air column bags. The corrugated core layer is supported by the air column bags, when the surface layer or the inner layer is deformed due to impact, the air column bags exert a resetting force on the corrugated core layer so as to drive the surface layer and the inner layer to reset, and the corrugated paperboard can continue to play a supporting role; when the impact on the surface layer, the inner layer and the corrugated core layer is too large and the air column bags cannot reset, hot melt material can be injected into the air column bags to further pressurize the air column bags, so that the air column bags drive the corrugated core layer, the surface layer and the inner layer to reset.

Description

Technical Field

[0001] This application relates to the technical field of corrugated paper, and in particular to a corrugated cardboard and carton. Background Technology

[0002] Corrugated cardboard, as a packaging material, has advantages such as light weight, low cost, easy processing, and convenient storage and transportation. The corrugations of corrugated cardboard resemble a series of connected arches, arranged side by side and supporting each other to form a triangular structure. It has good mechanical strength, can withstand a certain amount of pressure on a flat surface, and is elastic, providing good cushioning. It can be made into pads or containers of various shapes and sizes as needed, which is simpler and faster than plastic cushioning materials.

[0003] However, during use, the corrugated core layer inside the corrugated cardboard often deforms due to pressure. After deformation, the strength of the corrugated core layer will be greatly reduced, thereby reducing the overall strength of the corrugated cardboard. It cannot withstand different impacts during handling, which can easily cause the inner layer of the corrugated cardboard to malfunction or even be damaged, affecting the safety of the packaged goods.

[0004] Therefore, a new technical solution is needed to address the above problems. Summary of the Invention

[0005] In order to enable corrugated cardboard to return to its original shape after being deformed by pressure, so as to continue to play a supporting and anti-collision role, this application provides a corrugated cardboard and a carton.

[0006] This application provides a corrugated cardboard, which adopts the following technical solution: A corrugated cardboard and carton includes a face layer, a corrugated core layer, and an inner layer arranged sequentially. The protruding parts of the corrugated core layer are respectively connected to the face layer and the inner layer. Air column bags are filled in the gaps formed by the corrugated core layer, the face layer, and the inner layer. The air column bags are attached to the corrugated core layer, the face layer, and the inner layer. The air column bags are filled with air to inflate the air column bags. Hot melt material can also be injected into the air column bags.

[0007] By adopting the above technical solution, an air column bag is used to support the corrugated core layer. When the surface layer or inner layer is deformed by an impact, the air column bag applies a restoring force to the corrugated core layer, thereby causing the surface layer and inner layer to return to their original positions, allowing the corrugated cardboard to continue to provide support. When the impact on the surface layer, inner layer, and corrugated core layer is too great and the air column bag cannot return to its original position, hot melt material can be injected into the air column bag to further pressurize it, causing the air column bag to restore the corrugated core layer, surface layer, and inner layer. At the same time, the cooled and solidified hot melt material can further provide support.

[0008] Optionally: Multiple air column bags are arranged along the length of the corrugations of the corrugated core layer, with the multiple air column bags connected end to end. Multiple injection ports are provided on the surface layer and the inner layer, and the inflation ports of the air column bags are respectively located at the injection ports.

[0009] By adopting the above technical solution, the length of support provided by each air column bag will not be too long. Therefore, after deformation occurs on the corrugated cardboard, the nearest air column bag can be selected for use. The inflation port of the air column bag can be found more easily, and the hot melt material to be injected into the air column bag is also better, thereby reducing costs.

[0010] Optional: Each injection port is provided with an easy-tear strip to seal the injection port. The easy-tear strip is connected to the inner wall of the injection port and is provided with an easy-tear line. Each easy-tear strip is provided with an indicator mark indicating the air column bag corresponding to the injection port.

[0011] By adopting the above technical solution, when the inflation port is not needed, the inflation port can be set in the space formed by the corrugated core layer, the surface layer and the inner layer. The injection port can also be sealed by the easy-tear strip, so that there will not be too many holes on the surface of the corrugated cardboard, making the overall shape of the corrugated cardboard less affected. In addition, the inflation port will not be directly exposed, making the air column bag less susceptible to damage.

[0012] Optionally: The inflation port of the air column bag is connected to the easy-tear strip, and when the easy-tear strip is detached from the injection port, it can cause the inflation port of the air column bag to extend out from the injection port.

[0013] By adopting the above technical solution, when the easy-tear strip is removed from the injection port, the inflation port can be directly removed from the injection port, making the use of the inflation port more convenient. Furthermore, when the air column bag is installed on the corrugated core layer, the position of the air column bag's inflation port can be defined, ensuring that the position of the air column bag's inflation port is always in a fixed location, making it easier to find the inflation port during subsequent use.

[0014] Optionally, a cutting line is provided at the inflation port of the air column bag, the cutting line being located at a position on the air valve membrane of the air column bag away from the inflation port of the air column bag, and a support strip can be inserted inside the air column bag.

[0015] By adopting the above technical solution, when the air column bag is damaged and hot melt material cannot be injected into it, the air inlet of the air column bag can be cut off along the cutting line. Then, the support strip is inserted into the air column bag from the position where the air inlet was cut off. The support strip replaces the hot melt material, allowing the air column bag to be restored to its inflated state. This allows the air column bag to support the corrugated core layer, surface layer, and inner layer again and restore flatness, so that the corrugated cardboard can continue to play a supporting and shock-absorbing role.

[0016] Optionally: An isolation layer is provided inside the air column bag. The isolation layer is located on the side near the corrugated core layer. The isolation layer is attached to the side wall of the air column bag near the corrugated core layer. The isolation layer is located away from the air inlet at the cutting line. The support strip can pass through the isolation layer on the side near the corrugated core layer.

[0017] By adopting the above technical solution, when the air column bag is impacted and a large gap appears, a space can be re-formed by using the isolation layer and the side wall of the air column bag near the corrugated core layer. Then, the support strip is inserted into this space. When the support strip is inserted into the air column bag, the end of the support strip will not protrude directly from the gap in the air column bag, making the process of inserting the support strip into the air column bag more convenient.

[0018] Optionally, a handle is provided on the isolation layer near the cutting line. The handle is located inside the air column bag and is attached to the side of the isolation layer away from the corrugated core layer.

[0019] By adopting the above technical solution, before inserting the support strip into the air column bag, force is applied to the hand to move the insulating layer away from the corrugated core layer, thereby forming an opening between the insulating layer and the side wall of the air column bag near the corrugated core layer. Then, the support strip is inserted into the opening. When inserting the support strip, there is a force that can be applied to move the insulating layer, making it easier to form the opening between the insulating layer and the air column bag, thus making the process of inserting the support strip into the air column bag more convenient.

[0020] Optionally: A pocket is provided at the end of the handheld part away from the isolation layer, and the pocket is fitted onto the end of the support strip inserted into the air column bag.

[0021] By adopting the above technical solution, after the support strip is inserted into the air column bag, the pouch can be placed on the end of the support strip that protrudes from the air column bag, thereby limiting the position of the end of the support strip that protrudes from the air column bag. This makes it less likely for the support strip to slide relative to the air column bag and fall out of the air column bag during use, and allows the support strip to stably support the air column bag.

[0022] A type of cardboard box made by folding corrugated cardboard.

[0023] By adopting the above technical solution, after the outer wall of the carton is deformed by pressure, the air column bag can apply force to the outer wall of the carton so that the outer wall of the carton can recover. When it cannot recover by directly relying on the force applied by the air column bag, hot melt material can be injected into the air column bag to support the air column bag and thus restore the outer wall of the carton.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. Air column bags support the corrugated core layer, surface layer, and inner layer. After the corrugated core layer, surface layer, and inner layer are deformed, they can be restored by the support of the air column bags, so that the corrugated cardboard can continue to play a supporting and shock-absorbing role. 2. When the air column bag is unable to push the corrugated core layer, inner layer and surface layer to recover, hot melt material can be injected into the air column bag. The hot melt material applies pressure to the air column bag, thereby causing the air column bag to push the corrugated core layer, inner layer and surface layer to recover. After the hot melt material solidifies, it can continue to play a supporting role. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of the corrugated cardboard of this application; Figure 2 This is a schematic diagram illustrating the placement of the tear strip in an embodiment of the corrugated cardboard of this application; Figure 3 for Figure 2 Enlarged view of part A; Figure 4 This is a schematic diagram illustrating the position of the isolation layer after the support strip is inserted, as shown in the corrugated cardboard embodiment of this application; Figure 5 This is a schematic diagram illustrating the location of the isolation layer without inserted support strips, as shown in the corrugated cardboard embodiment of this application.

[0026] In the diagram, 1 is the outer layer; 11 is the injection port; 12 is the easy-tear strip; 121 is the indicator mark; 13 is the easy-tear line; 2 is the corrugated core layer; 3 is the inner layer; 4 is the air column bag; 41 is the cutting line; 42 is the isolation layer; 43 is the handle; 431 is the pocket; and 5 is the support strip. Detailed Implementation

[0027] The present application will be further described in detail below with reference to the accompanying drawings.

[0028] This application discloses a type of corrugated cardboard, such as... Figure 1As shown, it includes a surface layer 1, a corrugated core layer 2 and an inner layer 3 arranged in sequence. The corrugated core layer 2 is bonded and fixed to the surface layer 1 and the inner layer 3 at the protruding positions on both sides, so that the surface layer 1, the corrugated core layer 2 and the inner layer 3 form a whole. After the protruding parts of the corrugated core layer 2 are connected to the surface layer 1 and the inner layer 3, they form spaced intervals. Each space is equipped with an air column bag 4. The air column bag 4 is attached to the corrugated core layer 2, the surface layer 1, and the inner layer 3 and fills the space, so that the air column bag 4 can support the surface layer 1 and the inner layer 3. When the surface layer 1 or the inner layer 3 is impacted, the air column bag 4 can absorb the impact to a certain extent. The air column bag 4 has a certain degree of elasticity. When the surface layer 1 or the inner layer 3 is impacted and dented towards the corrugated core layer 2, the air column bag 4 can restore its shape without external force, thereby pushing the dented part of the surface layer 1 or the inner layer 3 back out, so that the surface layer 1 and the inner layer 3 no longer dent towards the corrugated core layer 2, and the surface layer 1 and the inner layer 3 can return to their original shape, so that the impact protection effect of the entire corrugated cardboard is not easily affected.

[0029] like Figure 2 and Figure 3 As shown, multiple air column bags 4 are arranged along the length of the corrugations of the corrugated core layer 2. The ends of the air column bags 4 located within the same corrugation are close to each other, thus allowing multiple air column bags 4 to be placed inside the same corrugation. Multiple injection ports 11 communicating with the space where the air column bags 4 are placed are respectively provided on the surface layer 1 and the inner layer 3. The injection ports 11 are respectively located near the inflation port of the air column bag 4, so that hot melt material can be injected into the air column bag 4 through the inflation port. In this embodiment, the hot melt material is selected as hot melt adhesive. When the impact on the surface layer 1 and the inner layer 3 is large, it will cause greater deformation of the surface layer 1 and the inner layer 3 over a large area. After the magnitude of deformation increases, the force of the air column bag 4 to restore the original shape will be insufficient to push the inner layer 3 and the surface layer 1 to recover. By injecting hot melt adhesive into the air column bag 4, the pressure inside the air column bag 4 is increased, which enables the air column bag 4 to push the surface layer 1 or the inner layer 3 to recover the original shape. After the hot melt adhesive cools and solidifies, it can also limit the shape of the air column bag 4, so that the air column bag 4 can stably support the surface layer 1 or the inner layer 3, and the protective strength of the surface layer 1 and the inner layer 3 at the impact position is not easily reduced.

[0030] The presence of the injection port 11 would expose the inflation port of the air column bag 4, thus affecting the overall appearance of the corrugated cardboard. Therefore, an easy-tear strip 12 is provided at each injection port 11 to close the injection port 11. The material of the easy-tear strip 12 is the same as that of the surface layer 1 or the inner layer 3. The easy-tear strip 12 is integrally formed on the surface layer 1 or the inner layer 3. An easy-tear line 13 is provided between the easy-tear strip 12 and the injection port 11. The easy-tear line 13 consists of several notches spaced apart and arranged around the easy-tear strip 12. Thus, when it is necessary to remove the easy-tear strip 12 from the injection port 11, only a force needs to be applied to the easy-tear strip 12 toward the corrugated core layer 2 to separate the easy-tear strip 12 from the surface layer 1 or the inner layer 3 along the easy-tear line 13. This makes it easy to remove the easy-tear strip 12 from the injection port 11, and then inject hot melt material into the air column through the inflation port.

[0031] Because the air bubbles are arranged along the length of the corrugated surface, and the injection port 11 is only located at the inflation port of the air bubble, it is difficult to determine the position of the air bubble corresponding to the injection port 11 without opening it. Therefore, the easy-tear strip 12 is also provided with an indicator mark 121 indicating the position of the air column bag 4 corresponding to the easy-tear strip 12. In this embodiment, the indicator mark 121 is an arrow mark, and the direction of the arrow indicates the location of the air bubble. Thus, when it is necessary to open the injection port 11, the position of the air bubble corresponding to the injection port 11 can be determined according to the direction indicated by the indicator mark 121, making it more convenient to select the position of the injection port 11 to be opened, and also making the process of restoring the surface layer 1 and the inner layer 3 to their original state more convenient.

[0032] The inflation port of the air column bag 4 is attached to the easy-tear strip 12, so that when the easy-tear strip 12 is removed from the injection port 11, the inflation port of the air column bag 4 can be directly removed from the injection port 11, and then hot melt material can be directly injected into the inflation port. When the inflation port of the air column bag 4 is not in use, the inflation port can be kept in a stable position by the easy-tear strip 12, which reduces the possibility of incorrect adhesion position. This makes it easier to find the inflation port when it is needed later, making the process of injecting hot melt material into the air column bag 4 more convenient.

[0033] like Figure 3 and Figure 4As shown, when corrugated cardboard is impacted, excessive impact force can cause the air column bag 4 to break, resulting in a connection between the inside and outside of the air column bag 4. In this state, when hot melt material is injected into the air column bag 4, the position of the hot melt material is difficult to control, and it will flow out of the air column bag 4, affecting the support of the air column bag 4 for the corrugated cardboard. Therefore, a cutting line 41 is provided near the inflation port of the air column bag 4. The cutting line 41 is located at a position on the air valve membrane of the air column bag 4 away from the inflation port of the air column bag 4, and the cutting position on the air column bag 4 is marked by the cutting line 41. After the air column bag 4 is cut along the cutting line 41, the support strip 5 can be inserted into the air column bag 4 through the opening of the cutting line 41. In this embodiment, the support strip 5 is made of plastic, and both ends of the support strip 5 are rounded. The outer wall of the support strip 5 fits against the inner wall of the air column bag 4, so that the air column bag 4 returns to its inflated state. The air column bag 4 is supported by the support strip 5, so that the air column bag 4 can still inflate to the size of the inflated state after it is damaged. This allows the air column bag 4 to continue to support the overall shape of the corrugated cardboard and continue to provide support after the air column bag 4 is damaged, making the protective effect of the corrugated cardboard more stable.

[0034] like Figure 4 and Figure 5 As shown, after the air column bag 4 is damaged, a tear will appear on its surface. When the support strip 5 is inserted into the air column bag 4, the end of the support strip 5 inserted into the air column bag 4 will protrude from the tear, thus affecting the insertion process of the support strip 5 into the air column bag 4. Therefore, an isolation layer 42 is also provided inside the air column bag 4 along its length. The isolation layer 42 is located in the middle of the air column bag 4 to separate the inner cavity of the air column bag 4. The isolation layer 42 is attached to the side wall of the air column bag 4 near the corrugated core layer 2. The isolation layer 42 is located at the position away from the inflation port of the cutting line 41. Thus, after the inflation port is cut off from the air column bag 4 through the cutting line 41, the support strip 5 can be inserted into the side of the isolation layer 42 away from the damaged side of the air column bag 4, so that a complete space is re-formed between the side of the air column bag 4 away from its tear and the isolation layer 42, allowing the support strip 5 to be inserted normally into the space.

[0035] When the support strip 5 is inserted into the space formed by the insulating layer 42 and the air column bag 4, since the insulating layer 42 is attached to the inner wall of the air column bag 4, it is necessary to move the insulating layer 42 a certain distance away from the attachment position of the air column bag 4 to form an opening between the insulating layer 42 and the air column bag 4 for the support strip 5 to be inserted. In order to facilitate the movement of the insulating layer 42, a handle 43 is integrally formed on the insulating layer 42 near the cutting line 41. The handle 43 is long and strip-shaped and is set inside the air column bag 4 and at a position of the insulating layer 42 away from the corrugated core layer 2. When it is necessary to insert the support strip 5 between the insulating layer 42 and the air column bag 4, force is applied to the handle 43 to move the insulating layer 42 away from the corrugated core layer 2, so that an opening appears between the insulating layer 42 and the air column bag 4 to which it is attached, so that the support strip 5 can be inserted between the insulating layer 42 and the air column bag 4 through the opening.

[0036] A pocket 431 is also provided at the end of the handle 43 away from the isolation layer 42. The pocket 431 can be fitted onto the end of the support strip 5 that extends out of the air column bag 4, which is inserted into the air column bag 4. This limits the position of the support strip 5 relative to the air column bag 4. After the support strip 5 is inserted into the air column bag 4, the support strip 5 will not directly detach from the air column bag 4. This allows the support strip 5 to be stably set in the air column bag 4 to support the shape of the air column bag 4. It also allows the support strip 5 to stably support the shape of the corrugated cardboard, thus keeping the support effect of the support strip 5 stable.

[0037] The implementation principle of this embodiment is as follows: When the corrugated cardboard is damaged by an impact, causing the inner layer 3 or the outer layer 1 to be damaged, and the air column bag 4 cannot move the inner layer 3 or the outer layer 1 to restore it, the easy-tear strip 12 corresponding to the damaged position of the air column bag 4 is found, and a force is applied to the easy-tear strip 12 in the direction of the corrugated core layer 2, so that the easy-tear strip 12 moves toward the corrugated core layer 2 and breaks at the easy-tear line 13. Then, the air inlet of the easy-tear strip 12 connected to the air column bag 4 is taken out from the injection port 11. If there is still air in the air column bag 4, hot melt material is injected into the air column bag 4 through a glue gun, so that the air column bag 4 expands to restore its original shape and flattens the depression of the outer layer 1 or the inner layer. Then, the hot melt material cools down to provide stable support for the inner layer or the outer layer 1. If the air content in the air column bag 4 is low, cut the air inlet at the cutting line 41. When you pull the hand away from the corrugated core layer 2, an opening is formed between the isolation layer 42 and the side wall of the air column bag 4 near the corrugated core layer 2. Insert the support strip 5 into the opening so that the entire support strip 5 is inserted into the air column bag 4. Then put the pouch on the end of the support strip 5 that is exposed outside the air column bag 4.

[0038] A cardboard box is made of corrugated cardboard folded together. The surface layer 1 of the corrugated cardboard is set on the outside of the cardboard box. When the outer wall of the cardboard box is damaged and dented due to impact, the surface layer 1 can be supported by air column bags 4 so that the dent is pushed out and kept flat.

[0039] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A corrugated cardboard, characterized in that: The system comprises a surface layer (1), a corrugated core layer (2), and an inner layer (3) arranged sequentially. The protrusions of the corrugated core layer (2) are connected to the surface layer (1) and the inner layer (3), respectively. The gaps formed by the corrugated core layer (2), the surface layer (1), and the inner layer (3) are filled with air column bags (4). The air column bags (4) are fitted to the corrugated core layer (2), the surface layer (1), and the inner layer (3). The air column bags (4) are filled with air to inflate them. Hot melt material can also be injected into the air column bags (4). A cutting line (41) is provided at the air inlet of the air column bags (4). The cutting line (41) is located at the position of the air valve membrane of the air column bag (4) away from the air inlet of the air column bag (4). A support strip (5) can be inserted inside the air column bag (4). An isolation layer (42) is provided inside the air column bag (4). The isolation layer (42) is located on the side close to the corrugated core layer (2). The isolation layer (42) is attached to the side wall of the air column bag (4) close to the corrugated core layer (2). The isolation layer (42) is located away from the air inlet of the cutting line (41). The support strip (5) can be inserted through the isolation layer (42) on the side close to the corrugated core layer (2).

2. The corrugated cardboard according to claim 1, characterized in that: Multiple air column bags (4) are arranged along the length of the corrugations of the corrugated core layer (2), and the multiple air column bags (4) are connected end to end. Multiple injection ports (11) are respectively provided on the surface layer (1) and the inner layer (3), and the air inlet of the air column bag (4) is respectively located at the injection port (11).

3. A corrugated cardboard according to claim 2, characterized in that: Each injection port (11) is provided with an easy-tear strip (12) to close the injection port (11). The easy-tear strip (12) is connected to the inner wall of the injection port (11) and an easy-tear line (13) is provided. Each easy-tear strip (12) is provided with an indicator mark (121) indicating the air column bag (4) corresponding to the injection port (11).

4. A corrugated cardboard according to claim 3, characterized in that: The inflation port of the air column bag (4) is connected to the tear strip (12). When the tear strip (12) is detached from the injection port (11), it can drive the inflation port of the air column bag (4) to extend from the injection port (11).

5. A corrugated cardboard according to claim 1, characterized in that: A hand-held part (43) is also provided on the isolation layer (42) near the cutting line (41). The hand-held part (43) is located inside the air column bag (4) and is attached to the side of the isolation layer (42) away from the corrugated core layer (2).

6. A corrugated cardboard according to claim 5, characterized in that: The handheld part (43) is provided with a pocket (431) at the end away from the isolation layer (42), and the pocket (431) is fitted onto the end of the support strip (5) inserted into the air column bag (4).

7. A cardboard box, characterized in that: It is made by folding corrugated cardboard as described in any of the above-mentioned methods.

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