Production process of corrugated board and corrugated carton

Abstract

The invention relates to a corrugated board which comprises two pieces of surface paper parallel to each other and corrugated core paper fixedly arranged between the two pieces of surface paper, the inner side of one piece of surface paper is fixedly connected with a plurality of positioning protection shells, and the positioning protection shells are arranged in gaps between the corrugated core paper and the surface paper. A positioning protection shell is arranged on the surface paper, a containing cavity is formed between the positioning protection shell and the surface paper, a metal belt is fixedly arranged in the containing cavity, the two ends of the metal belt extend to the side of the surface paper to form connectors, and the two corrugated boards can be connected through the connectors. According to the production technology of the corrugated board and the corrugated carton, when the corrugated board is used for machining the corrugated carton, the corrugated boards on all the faces of the machined corrugated carton can achieve mutual connection of the metal belts through the connectors, and therefore a metal cage structure is formed in the corrugated carton; the function of shielding an external electromagnetic field can be achieved, and internal objects can be better protected.

Description

Technical Field

[0001] The present invention relates to the technical field of corrugated paperboards, in particular to a production process of corrugated paperboards and corrugated paper boxes. Background Art

[0002] Corrugated cardboard is a common packaging material, primarily composed of face paper and corrugated core paper. It offers excellent impact resistance and effectively protects the contents. Existing corrugated cardboard, primarily made of paper, provides impact resistance but lacks the ability to isolate external electromagnetic fields. This can damage delicate electronic devices when exposed to strong electromagnetic fields. Using pure metal packaging is costly and prone to irreversible deformation. Summary of the Invention

[0003] In order to address the deficiencies in the prior art, the present invention provides a production process for corrugated cardboard and corrugated boxes. When corrugated cardboard is used to process corrugated boxes, the corrugated cardboards on each surface of the processed corrugated boxes can be interconnected by metal strips through connectors, thereby forming a metal cage structure inside the corrugated box, which can shield external electromagnetic fields and better protect the items inside.

[0004] In order to achieve the above object, the specific scheme adopted by the present invention is: A corrugated cardboard comprises two mutually parallel face papers and a corrugated core paper fixedly arranged between the two face papers, wherein a plurality of positioning protective shells are fixedly connected to the inner side of one of the face papers, the positioning protective shells are inserted into the gap between the corrugated core paper and the face paper, and a cavity is formed between the positioning protective shells and the face paper, a metal belt is fixedly arranged in the cavity, and the two ends of the metal belt respectively extend to the sides of the face paper to form a connecting head, and the two corrugated cardboards can be connected through the connecting head.

[0005] Preferably, a supporting filling piece is fixedly provided in the cavity, and the supporting filling piece presses the metal belt against the inner wall of the facial paper.

[0006] Preferably, the supporting filler is tubular, and the supporting filler and the metal belt are parallel to each other.

[0007] Preferably, the positioning protective shell is in the shape of a groove, and both sides of the positioning protective shell are integrally connected with a connecting piece, and the connecting piece is attached to the inner wall of the facial paper and fixedly connected to the facial paper.

[0008] Preferably, at least one groove extending along the length direction is formed on the side of the metal belt facing away from the facial tissue, and an anti-tear lining tape is fixedly arranged in the groove.

[0009] Preferably, the tear-resistant lining tape is made of PET and is fixedly connected to the metal tape by hot-melt fixing.

[0010] Preferably, the face paper comprises an outer layer of paper and an inner layer of paper that are fixedly connected, and the inner layer of paper is fixedly connected to the corrugated core paper.

[0011] Preferably, the connector is provided with at least two through holes distributed along the length direction of the metal strip.

[0012] A production process for corrugated paper boxes comprises the following steps: Make a template using one of the corrugated cardboards mentioned above; Bending the template to obtain a basic box body; Using the connector to connect two adjacent and separated corrugated cardboards in the basic box to obtain a shaped box; Any two adjacent corrugated paperboards are connected inside the shaped box through a plurality of connecting pieces to obtain a shaped box.

[0013] Preferably, in the basic box body, two adjacent and separated pieces of corrugated cardboard are connected via a metal connecting ring, and the metal connecting ring passes through the connecting head.

[0014] The corrugated cardboard of the present invention has a metal strip installed in the cavity. When the corrugated cardboard is used to make a corrugated box, the corrugated cardboard on each surface of the processed corrugated box can be interconnected by the metal strips via connectors, thereby forming a metal cage structure inside the corrugated box. This structure can shield external electromagnetic fields and better protect the items inside. Furthermore, the metal strip can enhance the strength of the corrugated cardboard, and the metal cage structure can enhance the strength of the corrugated box, preventing damage during transportation, thereby further enhancing the protective function. A positioning protective shell is used to limit the position of the metal strip, preventing the metal strip from twisting and facilitating the insertion of the metal strip into the cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the overall structure of the corrugated paperboard of the present invention; Figure 2 It is a schematic diagram of the connector and through-hole; Figure 3 This is a schematic diagram of the state when the two connectors are connected; Figure 4 The present invention is a structural schematic diagram of a connecting piece connecting a first corrugated paperboard and a second corrugated paperboard in a corrugated paperboard box processed by the present invention.

[0017] Figure numerals: 1-outer paper, 2-inner paper, 3-corrugated core paper, 4-connecting piece, 5-positioning protective shell, 6-cavity, 7-support filling piece, 8-metal belt, 9-tear-proof lining belt, 10-through hole, 11-metal connecting ring, 12-first corrugated cardboard, 13-connecting piece, 14-second corrugated cardboard. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Figure 1 This is a schematic diagram of the overall structure of the corrugated board of the present invention. Figure 2 This is a schematic diagram of the connector and through-hole. Figure 3 This is a schematic diagram of the status when the two connectors are connected. Figure 4 The present invention is a structural schematic diagram of a connecting piece connecting a first corrugated paperboard and a second corrugated paperboard in a corrugated paperboard box processed by the present invention.

[0020] A corrugated cardboard includes two parallel face papers and a corrugated core paper 3 fixedly arranged between the two face papers, wherein a plurality of positioning protective shells 5 are fixedly connected to the inner side of one of the face papers, and the positioning protective shells 5 are inserted into the gap between the corrugated core paper 3 and the face paper, and a cavity 6 is formed between the positioning protective shells 5 and the face paper, and a metal belt 8 is fixedly arranged in the cavity 6, and the two ends of the metal belt 8 extend to the sides of the face paper to form a connecting head, and the two corrugated cardboards can be connected through the connecting head.

[0021] The corrugated cardboard of the present invention is provided with a metal belt 8 in the cavity 6. When the corrugated cardboard is used to process a corrugated box, the corrugated cardboard on each surface of the processed corrugated box can be interconnected by the metal belt 8 through a connector, thereby forming a metal cage structure inside the corrugated box, which can shield the external electromagnetic field and better protect the items inside. On the other hand, the metal belt 8 can enhance the strength of the corrugated cardboard, and the metal cage structure can enhance the strength of the corrugated box, preventing damage during transportation, thereby further enhancing the protective function. The positioning protective shell 5 is used to limit the position of the metal belt 8, prevent the metal belt 8 from twisting, and facilitate the insertion of the metal belt 8 into the cavity 6.

[0022] To further enhance the stability of the metal strip 8 within the cavity 6, a supporting filler 7 is fixedly installed in the cavity 6. The supporting filler 7 presses the metal strip 8 against the inner wall of the tissue paper. The supporting filler 7 compresses the metal strip 8 tightly, preventing the metal strip 8 from deflecting or twisting, which could cause the connector to retract into the cavity 6. This ensures that the metal strips 8 of the two corrugated cardboard sheets can be smoothly connected through the connector.

[0023] In this embodiment, the supporting filler 7 is tubular and parallel to the metal strip 8. The supporting filler 7 can be made of the same material as the corrugated cardboard. Because of its tubular shape, the supporting filler 7 also has a certain impact resistance, thereby further improving the overall impact resistance of the corrugated cardboard and the protective ability of the corrugated cardboard when used for packaging.

[0024] The positioning protective shell 5 is specifically configured as follows: the positioning protective shell 5 is trough-shaped, with a connecting piece 4 integrally connected to each side of the positioning protective shell 5. The connecting piece 4 is attached to the inner wall of the facial tissue and is fixedly connected to the facial tissue. The connecting piece 4 can be fixed to the inner side of the facial tissue by gluing, and the adhesive used to bond the corrugated core paper 3 and the facial tissue can be used to achieve this bonding. This is a conventional technique in the art and will not be further described here.

[0025] To further enhance the strength and life of metal strip 8 and prevent tearing, at least one longitudinal groove is defined on the side of metal strip 8 facing away from the face paper. A tear-resistant lining strip 9 is fixedly mounted in the groove. In one embodiment of the present invention, metal strip 8 is constructed of aluminum or copper, and tear-resistant lining strip 9 is constructed of PET and is fixed to metal strip 8 via hot melt.

[0026] The facial tissue paper comprises a fixedly connected outer layer 1 and inner layer 2, which is fixedly connected to a corrugated core 3. Both outer and inner layers can be made of conventional corrugated cardboard. By stacking them together, the thickness is increased, improving the strength of the corrugated cardboard while reducing processing difficulty.

[0027] To facilitate the connection of the metal strips 8 on two corrugated cardboard sheets using a connector, the connector is provided with at least two through-holes 10 distributed along the length of the metal strips 8. Based on this structure, the two connectors can be stacked together, ensuring that the through-holes 10 on each connector are connected. A metal connecting ring 11, which can be formed from a bent wire, is then passed through the through-holes 10 to secure the two connectors together. It should also be noted that the through-holes 10 need to be staggered with the tear-resistant lining tape 9 to ensure direct contact between the metal connecting ring 11 and the metal strips 8, thereby maintaining the metal cage structure's ability to protect against external electromagnetic fields.

[0028] In a specific embodiment of the present invention, a corrugated cardboard includes two mutually parallel face papers and a corrugated core paper 3 fixedly arranged between the two face papers, wherein a plurality of positioning protective shells 5 are fixedly connected to the inner side of one face paper, the positioning protective shell 5 is inserted into the gap between the corrugated core paper 3 and the face paper, and a cavity 6 is formed between the positioning protective shell 5 and the face paper, a metal strip 8 is fixedly arranged in the cavity 6, and the two ends of the metal strip 8 extend to the side of the face paper to form a connecting head, and the two corrugated cardboards can be connected through the connecting head, and a supporting filler 7 is fixedly arranged in the cavity 6, and the supporting filler 7 presses the metal strip 8 against the inner wall of the face paper, and the supporting filler 7 can press the metal strip 8 against the inner wall of the face paper. 8 is pressed tightly to prevent the metal strip 8 from being retracted into the cavity 6 due to deviation or twisting, thereby ensuring that the metal strips 8 of the two corrugated cardboards can be connected smoothly through the connector. The supporting filler 7 is tubular, and the supporting filler 7 and the metal strip 8 are parallel to each other. The supporting filler 7 can be made of the same material as the corrugated cardboard. Because the supporting filler 7 is tubular, the supporting filler 7 also has a certain impact resistance, thereby further improving the overall impact resistance of the corrugated cardboard and the protection ability of the corrugated cardboard for articles when used for packaging articles. The positioning protective shell 5 is in the shape of a groove, and the two sides of the positioning protective shell 5 are each integrally connected with a connecting piece. 4. The connecting piece 4 is attached to the inner wall of the facial paper and is fixedly connected to the facial paper. The connecting piece 4 can be fixed to the inner side of the facial paper by bonding. The side of the metal belt 8 facing away from the facial paper is provided with at least one groove extending in the length direction. An anti-tear lining tape 9 is fixedly arranged in the groove. In one embodiment of the present invention, the metal belt 8 is made of aluminum or copper, and the anti-tear lining tape 9 is made of PET material and is fixedly connected to the metal belt 8 by hot-melt fixing. The facial paper includes an outer paper 1 and an inner paper 2 that are fixedly connected. The inner paper 2 is fixedly connected to the corrugated core paper 3. The outer paper 1 and the inner paper 2 can both be made of conventional corrugated cardboard facial paper material. A larger Thickness, improves the strength of the corrugated cardboard while reducing the difficulty of processing. The connector is provided with at least two through holes 10 distributed along the length direction of the metal belt 8. Based on this structure, when connecting two connectors, the two connectors can be stacked together, and it is ensured that the through holes 10 on the two connectors are connected to each other. Then a metal connecting ring 11 is used to pass through the through hole 10 to bundle and fix the two connectors together. The metal connecting ring 11 can be formed by bending a metal wire. It should also be noted that the through hole 10 needs to be staggered with the anti-tear lining tape 9 to ensure that the metal connecting ring 11 can be in direct contact with the metal belt 8, thereby ensuring the performance of the metal cage structure in defending against external electromagnetic fields.

[0029] The present invention further provides a production process for a corrugated paper box, comprising the following steps: S1: Use one of the above corrugated cardboards to make a template; S2: bend the template to obtain the basic box; S3: Use a connector to connect two adjacent and separated corrugated cardboards in the basic box to obtain a shaped box; in the basic box, the two adjacent and separated corrugated cardboards are connected by a metal connecting ring 11, and the metal connecting ring 11 passes through the connector.

[0030] S4: Within the shaped box, any two adjacent corrugated cardboard sheets are connected using a plurality of connecting pieces 13 to form a finished box. The connecting pieces 13 are L-shaped plates. The two adjacent corrugated cardboard sheets are referred to as the first corrugated cardboard sheet 12 and the second corrugated cardboard sheet 14. A portion of the connecting piece 13 is bonded to the first corrugated cardboard sheet 12, while another portion of the connecting piece 13 is bonded to the second corrugated cardboard sheet 14. The connecting pieces 13 can be made of the same material as the outer paper sheet 1 and the inner paper sheet 2, which is a common choice in the art and will not be further described here.

[0031] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0032] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A corrugated paperboard comprising two mutually parallel surface papers and a corrugated core paper (3) fixedly arranged between the two surface papers, characterized in that: A plurality of positioning protective shells (5) are fixedly connected to the inner side of one of the face papers, and the positioning protective shells (5) are inserted into the gap between the corrugated core paper (3) and the face paper, and a cavity (6) is formed between the positioning protective shells (5) and the face paper, and a metal belt (8) is fixedly arranged in the cavity (6), and the two ends of the metal belt (8) respectively extend to the side of the face paper to form a connecting head, and two corrugated paperboards can be connected through the connecting head.

2. A corrugated paperboard according to claim 1, characterized in that: A supporting filler (7) is fixedly arranged in the cavity (6), and the supporting filler (7) presses the metal belt (8) against the inner wall of the facial paper.

3. A corrugated paperboard according to claim 2, characterized in that: The supporting filler (7) is tubular, and the supporting filler (7) and the metal belt (8) are parallel to each other.

4. The corrugated paperboard according to claim 1, wherein: The positioning protective shell (5) is in the shape of a groove, and both sides of the positioning protective shell (5) are integrally connected with a connecting piece (4), and the connecting piece (4) is attached to the inner wall of the facial paper and is fixedly connected to the facial paper.

5. The corrugated paperboard according to claim 1, characterized in that: At least one groove extending in the length direction is provided on the side of the metal belt (8) facing away from the face paper, and an anti-tear lining belt (9) is fixedly arranged in the groove.

6. A corrugated paperboard according to claim 5, characterized in that: The tear-resistant lining tape (9) is made of PET material and is fixedly connected to the metal tape (8) by hot-melt fixing.

7. The corrugated paperboard according to claim 1, characterized in that: The surface paper comprises an outer layer of paper (1) and an inner layer of paper (2) which are fixedly connected, and the inner layer of paper (2) is fixedly connected to the corrugated core paper (3).

8. The corrugated paperboard according to claim 1, wherein: The connecting head is provided with at least two through holes (10) distributed along the length direction of the metal strip (8).

9. A production process for corrugated paper boxes, characterized in that: The steps include: Using a corrugated cardboard as described in any one of claims 1 to 8 to make a template; Bending the template to obtain a basic box body; Using the connector to connect two adjacent and separated corrugated cardboards in the basic box to obtain a shaped box; Any two adjacent corrugated paperboards are connected inside the shaped box body through a plurality of connecting pieces (13) to obtain a shaped box body.

10. A process for producing a corrugated paper box according to claim 9, characterized in that: In the basic box, two adjacent and separated pieces of corrugated cardboard are connected via a metal connecting ring (11), and the metal connecting ring (11) passes through the connecting head.

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