Light corrugated carton and production method thereof

Abstract

The invention relates to the field of cartons, in particular to a light corrugated carton and a production method thereof.The light corrugated carton comprises a paperboard, the paperboard comprises outer-layer surface paper, middle-layer inner paper, inner-layer surface paper, upper corrugating base paper and lower corrugating base paper, and the outer-layer surface paper, the upper corrugating base paper, the middle-layer inner paper, the lower corrugating base paper and the inner-layer surface paper are sequentially arranged in a stacked mode; the upper corrugating medium and the lower corrugating medium are wave-shaped and have opposite wave crests; the middle layer inner paper comprises a plurality of connecting inner paper and a plurality of honeycomb structures, and the connecting inner paper and the honeycomb structures are sequentially arranged at intervals in the length direction of the upper corrugating base paper. The honeycomb structure is opposite to the wave crest of the upper corrugating medium; a hollow structure is arranged on the connecting inner paper; the honeycomb structure is matched with the connecting inner paper, so that the weight of the carton is reduced, and the structural strength of the paperboard can be guaranteed.

Description

Technical Field

[0001] This invention relates to the field of cardboard boxes, and more particularly to a lightweight corrugated cardboard box and its manufacturing method. Background Technology

[0002] Existing corrugated cardboard boxes are mostly structurally designed with an outer layer, a middle liner, an inner layer, and corrugated base paper distributed between the outer layer, middle liner, and inner layer. A corrugated base paper is used to provide structural load-bearing capacity. However, for lightweight cardboard box designs, because the above basic structure is not easily changed, companies often try to achieve lightweight boxes by changing the cardboard material. However, changing the cardboard material requires repeated and extensive testing, which cannot meet the production requirements of existing lightweight corrugated cardboard boxes. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a lightweight corrugated cardboard box that can achieve lightweight design while ensuring structural strength, and a method for producing the same.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: a lightweight corrugated cardboard box, characterized in that it comprises cardboard, the cardboard comprising an outer layer paper, a middle inner layer paper, an inner layer paper, an upper corrugated base paper, and a lower corrugated base paper, the outer layer paper, the upper corrugated base paper, the middle inner layer paper, the lower corrugated base paper, and the inner layer paper being stacked in sequence; the upper corrugated base paper and the lower corrugated base paper are wavy with their crests facing each other; the middle inner layer paper comprises connecting inner paper and a honeycomb structure, the connecting inner paper and the honeycomb structure being provided in multiples and arranged at intervals along the length direction of the upper corrugated base paper; the honeycomb structure is opposite to the crest of the upper corrugated base paper; the connecting inner paper has a perforated structure.

[0005] It also includes a method for producing lightweight corrugated cardboard boxes, comprising the following steps: S1. To make a cardboard, multiple connecting linerboards and honeycomb structures are sequentially bonded together at intervals along the length of the cardboard; the connecting linerboards have perforated structures; the bonded connecting linerboards and honeycomb structures serve as the middle linerboard, and then the outer linerboard, upper corrugated base paper, middle linerboard, lower corrugated base paper, and inner linerboard are sequentially stacked; the upper and lower corrugated base papers have wavy structures; the above stacking arrangement is such that the crests of the upper and lower corrugated base papers face each other and the honeycomb structure is bonded between the crests of the two.

[0006] S2. Cut the cardboard into the required shape and fold it into a carton structure.

[0007] The beneficial effects of this invention are as follows: by designing the connecting liner and the honeycomb structure of the middle layer liner, the middle layer liner forms a composite structure; by utilizing the honeycomb structure and the corrugated peaks of the upper and lower corrugated base paper, it can effectively strengthen the load-bearing node, while a hollow structure design can be made on the connecting liner to reduce the structural weight; through the cooperation of the honeycomb structure and the connecting liner, the weight of the carton is reduced while the structural strength of the cardboard is guaranteed. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of a lightweight corrugated cardboard box according to a specific embodiment of the present invention; Label Explanation: 1. Outer liner; 2. Middle liner; 21. Honeycomb structure; 22. Connecting liner; 221. Upper liner; 222. Lower liner; 223. Hollowed-out structure; 3. Inner liner; 4. Upper corrugated base paper; 5. Lower corrugated base paper; 6. First reinforcing rib; 7. Second reinforcing rib. Detailed Implementation

[0009] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0010] Please refer to Figure 1 A lightweight corrugated cardboard box includes a cardboard sheet comprising an outer face liner 1, a middle inner liner 2, an inner face liner 3, an upper corrugated base paper 4, and a lower corrugated base paper 5. The outer face liner 1, the upper corrugated base paper 4, the middle inner liner 2, the lower corrugated base paper 5, and the inner face liner 3 are arranged in a sequentially stacked manner. The upper corrugated base paper 4 and the lower corrugated base paper 5 are wavy with their crests facing each other. The middle inner liner 2 includes a connecting liner 22 and a honeycomb structure 21. Multiple connecting liner 22 and honeycomb structures 21 are provided and arranged at intervals along the length of the upper corrugated base paper 4. The honeycomb structure 21 is opposite to the crest of the upper corrugated base paper 4. The connecting liner 22 has a perforated structure 223.

[0011] As can be seen from the above description, the beneficial effects of the present invention are as follows: by designing the connecting liner 22 and the honeycomb structure 21 of the intermediate liner 2, the intermediate liner 2 forms a composite structure; by utilizing the relative design of the peaks of the honeycomb structure 21 with the upper corrugated base paper 4 and the lower corrugated base paper 5, it can effectively strengthen the load-bearing node, while the connecting liner 22 can be designed with a hollow structure 223 to reduce the structural weight; through the cooperation of the honeycomb structure 21 and the connecting liner 22, the weight of the carton is reduced while the structural strength of the cardboard is guaranteed.

[0012] Furthermore, the connecting liner 22 includes an upper liner 221 and a lower liner 222, which are positioned opposite each other. The upper liner 221 is close to the upper corrugated base paper 4, and the lower liner 222 is close to the lower corrugated base paper 5.

[0013] As described above, the connecting liner 22 consists of an upper liner 221 and a lower liner 222. The design of the two liner layers ensures the compressive strength of the cardboard.

[0014] Furthermore, both the upper inner paper 221 and the lower inner paper 222 are provided with a hollow structure 223.

[0015] As can be seen from the above description, the cardboard box is lightweight by using the hollow structure 223 set on the upper inner paper 221 and the lower inner paper 222.

[0016] Furthermore, the perforated structures 223 of the upper inner paper 221 and the lower inner paper 222 are staggered in the thickness direction of the paperboard.

[0017] As can be seen from the above description, by staggering the perforated structure 223 on the upper inner paper 221 and the lower inner paper 222, the perforation can be avoided from being too concentrated, which would weaken the strength of some nodes.

[0018] Furthermore, the upper edge of the honeycomb structure 21 is connected to the upper inner paper 221, and the lower edge of the honeycomb structure 21 is connected to the lower inner paper 222.

[0019] As can be seen from the above description, the honeycomb structure 21 is combined with the connecting inner paper 22 by connecting the upper edge and the lower edge of the honeycomb structure 21 to the upper inner paper 221 and the lower inner paper 222, respectively.

[0020] Furthermore, it also includes a first reinforcing rib 6, which is disposed on both sides of the honeycomb structure 21 and extends obliquely from the upper end of the honeycomb structure 21 to connect with the lower inner paper 222.

[0021] As can be seen from the above description, the inclined arrangement of the first reinforcing rib 6 can further strengthen the connection between the honeycomb structure 21 and the lower liner 222, thereby improving the integrity and strength of the paperboard.

[0022] Furthermore, it also includes a second reinforcing rib 7, which is disposed on both sides of the honeycomb structure 21 and extends obliquely from the lower end of the honeycomb structure 21 to connect with the upper inner paper 221.

[0023] As can be seen from the above description, the inclined arrangement of the second reinforcing rib 7 can further strengthen the connection between the honeycomb structure 21 and the upper inner paper 221, thereby improving the integrity and strength of the paperboard.

[0024] Furthermore, the first reinforcing rib 6 and the second reinforcing rib 7 are respectively disposed on two adjacent honeycomb structures 21.

[0025] As can be seen from the above description, the combined design of the first reinforcing rib 6 and the second reinforcing rib 7 can improve the structural strength of the intermediate inner paper 2.

[0026] A method for producing lightweight corrugated cardboard boxes, characterized by comprising the following steps: S1. To make a cardboard, multiple connecting linerboards 22 and honeycomb structures 21 are sequentially bonded together at intervals along the length of the cardboard; wherein the connecting linerboards 22 have a perforated structure 223; the bonded connecting linerboards 22 and honeycomb structures 21 serve as the intermediate linerboard 2, and then the outer linerboard 1, upper corrugated base paper 4, intermediate linerboard 2, lower corrugated base paper 5 and inner linerboard 3 are sequentially stacked; wherein the upper corrugated base paper 4 and the lower corrugated base paper 5 have a wavy structure; the above stacking arrangement is such that the crests of the upper corrugated base paper 4 and the lower corrugated base paper 5 are opposite each other and the honeycomb structure 21 is bonded between the crests of the two.

[0027] S2. Cut the cardboard into the required shape and fold it into a carton structure.

[0028] Example 1: A lightweight corrugated cardboard box includes a cardboard sheet comprising an outer face liner 1, a middle inner liner 2, an inner face liner 3, an upper corrugated base paper 4, and a lower corrugated base paper 5. The outer face liner 1, the upper corrugated base paper 4, the middle inner liner 2, the lower corrugated base paper 5, and the inner face liner 3 are arranged in a sequentially stacked manner. The upper corrugated base paper 4 and the lower corrugated base paper 5 are wavy with their crests facing each other. The middle inner liner 2 includes a connecting liner 22 and a honeycomb structure 21. Multiple connecting liner 22 and honeycomb structures 21 are provided and arranged at intervals along the length of the upper corrugated base paper 4. The honeycomb structure 21 is opposite to the crest of the upper corrugated base paper 4. The connecting liner 22 has a perforated structure 223.

[0029] The connecting linerboard 22 includes an upper linerboard 221 and a lower linerboard 222, which are positioned vertically opposite each other. The upper linerboard 221 is located near the upper corrugated base paper 4, and the lower linerboard 222 is located near the lower corrugated base paper 5. Specifically, both the upper linerboard 221 and the lower linerboard 222 are provided with perforated structures 223. The perforated structures 223 of the upper linerboard 221 and the lower linerboard 222 are staggered in the thickness direction of the cardboard.

[0030] Regarding the connection between the honeycomb structure 21 and the connecting liner 22, the upper edge of the honeycomb structure 21 is connected to the upper liner 221, and the lower edge of the honeycomb structure 21 is connected to the lower liner 222.

[0031] In addition, it includes a first reinforcing rib 6 and a second reinforcing rib 7. The first reinforcing rib 6 is disposed on both sides of the honeycomb structure 21 and extends obliquely from the upper end of the honeycomb structure 21 to connect with the lower inner paper 222. The second reinforcing rib 7 is disposed on both sides of the honeycomb structure 21 and extends obliquely from the lower end of the honeycomb structure 21 to connect with the upper inner paper 221. In this embodiment, the first reinforcing rib 6 and the second reinforcing rib 7 are respectively disposed on two adjacent honeycomb structures 21.

[0032] Example 2 A method for producing lightweight corrugated cardboard boxes, characterized by comprising the following steps: S1. To make a cardboard, multiple connecting linerboards 22 and honeycomb structures 21 are sequentially bonded together at intervals along the length of the cardboard; wherein the connecting linerboards 22 have a perforated structure 223; the bonded connecting linerboards 22 and honeycomb structures 21 serve as the intermediate linerboard 2, and then the outer linerboard 1, upper corrugated base paper 4, intermediate linerboard 2, lower corrugated base paper 5 and inner linerboard 3 are sequentially stacked; wherein the upper corrugated base paper 4 and the lower corrugated base paper 5 have a wavy structure; the above stacking arrangement is such that the crests of the upper corrugated base paper 4 and the lower corrugated base paper 5 are opposite each other and the honeycomb structure 21 is bonded between the crests of the two.

[0033] S2. Cut the cardboard into the required shape and fold it into a carton structure.

[0034] In summary, the lightweight corrugated cardboard box and its production method provided by this invention, through the design of the connecting liner and the honeycomb structure of the middle liner, enable the middle liner to form a composite structure; by utilizing the honeycomb structure and the corrugated peaks of the upper and lower corrugated base paper, it can effectively strengthen the load-bearing node, while the connecting liner can be designed with a hollow structure to reduce the structural weight; through the cooperation of the honeycomb structure and the connecting liner, the weight of the cardboard box is reduced while the structural strength of the cardboard is guaranteed.

[0035] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A lightweight corrugated cardboard box, characterized in that, The invention includes a paperboard comprising an outer face liner, a middle liner, an inner face liner, an upper corrugated base paper, and a lower corrugated base paper, wherein the outer face liner, upper corrugated base paper, middle liner, lower corrugated base paper, and inner face liner are arranged in a sequentially stacked manner; the upper and lower corrugated base papers are wavy with their crests facing each other; the middle liner includes a connecting liner and a honeycomb structure, wherein multiple connecting liner and honeycomb structures are provided and arranged at intervals along the length of the upper corrugated base paper; the honeycomb structure is opposite to the crest of the upper corrugated base paper; and the connecting liner has a perforated structure.

2. The lightweight corrugated cardboard box according to claim 1, characterized in that, The connecting liner includes an upper liner and a lower liner, which are positioned opposite each other. The upper liner is close to the upper corrugated base paper, and the lower liner is close to the lower corrugated base paper.

3. The lightweight corrugated cardboard box according to claim 2, characterized in that, Both the upper and lower inner paper have a perforated structure.

4. The lightweight corrugated cardboard box according to claim 3, characterized in that, The perforated structures of the upper and lower inner paper are staggered in the thickness direction of the paperboard.

5. The lightweight corrugated cardboard box according to claim 2, characterized in that, The upper edge of the honeycomb structure is connected to the upper inner paper, and the lower edge of the honeycomb structure is connected to the lower inner paper.

6. The lightweight corrugated cardboard box according to claim 5, characterized in that, It also includes a first reinforcing rib, which is disposed on both sides of the honeycomb structure and extends obliquely from the upper end of the honeycomb structure to connect with the lower inner paper.

7. The lightweight corrugated cardboard box according to claim 6, characterized in that, It also includes a second reinforcing rib, which is located on both sides of the honeycomb structure and extends obliquely from the lower end of the honeycomb structure to connect with the upper inner paper.

8. The lightweight corrugated cardboard box according to claim 7, characterized in that, The first reinforcing rib and the second reinforcing rib are respectively provided on two adjacent honeycomb structures.

9. A method for producing a lightweight corrugated cardboard box, characterized in that, Includes the following steps: S1. Make the cardboard, and glue multiple connecting linerboards and honeycomb structures together at intervals along the length of the cardboard. The connecting liner has a perforated structure; the bonded connecting liner and honeycomb structure serve as the middle liner, and then the outer liner, upper corrugated base paper, middle liner, lower corrugated base paper and inner liner are stacked in sequence; the upper corrugated base paper and the lower corrugated base paper have a wavy structure; the above stacking arrangement makes the crests of the upper corrugated base paper and the lower corrugated base paper face each other and the honeycomb structure is bonded between the crests of the two. S2. Cut the cardboard into the required shape and fold it into a carton structure.

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