A carton having an L-shaped post strengthening structure

Abstract

This utility model discloses a cardboard box with an L-shaped column reinforcement structure, belonging to the field of cardboard box technology. The cardboard box with the L-shaped column reinforcement structure includes a paper blank, a bottom surface, two short facades, and two long facades. Each of the two short facades is connected to a top surface for forming the box's top cover. Each end of the top surface is provided with a first connecting flap for connecting to the corresponding long facade. Each end of the short facade is provided with a second connecting flap for connecting to the long facade. The second connecting flaps are characterized by having sequentially spaced reverse fold lines and double fold lines arranged horizontally from the outside inwards. From the outside inwards, short-side connecting flaps, long-side connecting flaps, and positioning connecting flaps for connecting to the inner side of the long facades are formed from the second connecting flaps. The short-side and long-side connecting flaps are folded together by the reverse fold lines and double fold lines to form an L-shaped column. This utility model solves the weakness of insufficient strength in fruit cardboard boxes by changing the folding structure of the paper blank and adding L-shaped columns.

Description

Technical Field

[0001] This utility model belongs to the field of cardboard box technology, specifically relating to a cardboard box with an L-shaped column reinforcement structure. Background Technology

[0002] In actual use, traditional fruit crates may deform due to insufficient strength, resulting in product damage, due to improper logistics and transportation methods or other human factors. This patent addresses this problem. Utility Model Content

[0003] To address the problem of cardboard box deformation due to insufficient strength during use, this utility model provides a cardboard box with an L-shaped column reinforcement structure.

[0004] The embodiments of this utility model are achieved through the following technical solutions:

[0005] A cardboard box with an L-shaped column reinforcement structure includes a paper blank, which includes a bottom surface and two alternating short facades and two long facades for enclosing and forming the side walls of the cardboard box. The side of each of the two short facades away from the bottom surface is connected to a top surface for forming the top cover of the cardboard box. Each end of the top surface is provided with a first connecting flap for connecting with the corresponding long facade. Each end of the short facade is provided with a second connecting flap for connecting with the long facade. The second connecting flap is characterized in that the second connecting flap is arranged horizontally with a reverse fold line and a double fold line at intervals from the outside to the inside. From the outside to the inside of the second connecting flap, a short side connecting flap, a long side connecting flap, and a positioning connecting flap for connecting with the inner side of the long facade are formed. The short side connecting flap and the long side connecting flap are folded by the reverse fold line and the double fold line to form an L-shaped column.

[0006] Compared with traditional machine-folded fruit boxes, the above design adds two fold lines at the second connecting flap on the short facade of the cardboard box. This divides the second connecting flap into a short-side connecting flap, a long-side connecting flap, and a positioning connecting flap. Through two forward folds and one reverse fold, the connecting flap can connect to both the long and short facades simultaneously, thus forming an L-shaped column. This achieves the effect of simultaneously reinforcing the longitudinal strength of both the long and short facades of the cardboard box.

[0007] In some technical solutions of this utility model, a first hot melt adhesive layer is provided between the inner side of the positioning connecting flap and the inner side of the long side connecting flap.

[0008] The first hot melt adhesive layer can enhance the tightness of the fit between the inner side of the positioning connecting flap and the long side connecting flap to a certain extent, thereby enhancing the stability of the L-shaped column and providing better support for the long vertical surface of the carton.

[0009] In some technical solutions of this utility model, a second hot melt adhesive layer is provided between the inner side of the short side connecting flap and the short side surface.

[0010] The second hot melt adhesive layer can enhance the tightness of the fit between the inner side of the short side connecting flap and the short side surface to a certain extent, further enhancing the stability of the L-shaped column and providing better support for the short side of the carton.

[0011] In some technical solutions of this utility model, the ratio of the total width of the short side connecting flap, the long side connecting flap, and the positioning connecting flap to the height of the carton is 0.8-1.15.

[0012] This design method can save on the material used for paper blanks while ensuring the L-shaped uprights provide sufficient support strength for the carton.

[0013] The technical solution of this utility model has at least the following advantages and beneficial effects:

[0014] This invention adds a reverse fold line and a double fold line at the second connecting flap. By folding twice forward and once backward, an L-shaped column is formed that can support both the long and short sides of the carton. This solves the problem of insufficient longitudinal load-bearing capacity of traditional fruit boxes and reduces product damage caused by broken fruit boxes. Attached Figure Description

[0015] Figure 1 This is a structural diagram of a cardboard box with an L-shaped column reinforcement structure according to the present invention;

[0016] Figure 2 This is a partial structural diagram of a cardboard box with an L-shaped column reinforcement structure according to the present invention.

[0017] Icons: 1-Paper blank, 2-Bottom, 3-Short elevation, 4-Long elevation, 5-Top, 6-First connecting piece, 7-Second connecting piece, 8-Reverse fold line, 9-Double fold line, 10-Short side connecting piece, 11-Long side connecting piece, 12-Positioning connecting piece, 13-L-shaped column, 14-Front fold line a1, 15-Front fold line a2, 16-Front fold line b1, 17-Front fold line b2, 18-Front fold line e1. Detailed Implementation

[0018] Example

[0019] Please refer to Figures 1-2This embodiment provides a cardboard box with an L-shaped column 13 reinforcement structure. The cardboard box includes a blank 1, which includes a bottom surface 2 and two alternating short facades 3 and two long facades 4 for enclosing and forming the sidewalls of the cardboard box. The side of each of the two short facades 3 away from the bottom surface 2 is connected to a top surface 5 for forming the top cover of the cardboard box. Each end of the top surface 5 is provided with a first connecting flap 6 for connecting with the corresponding long facade 4. Each end of the short facade 3 is provided with a second connecting flap 7 for connecting with the long facade 4. The second connecting flap 7 is characterized in that the second connecting flap 7 is arranged horizontally with a reverse fold line 8 and a double fold line 9 at intervals from the outside to the inside. From the second connecting flap 7, a short side connecting flap 10, a long side connecting flap 11, and a positioning connecting flap 12 for connecting with the inner side of the long facade 4 are formed from the outside to the inside. The short side connecting flap 10 and the long side connecting flap 11 are folded by the reverse fold line 8 and the double fold line 9 to form an L-shaped column 13.

[0020] The principle of this cardboard box with L-shaped column 13 reinforcement structure is as follows: there is a positive fold line a114 between the bottom surface 2 and any short vertical surface 3; there is a positive fold line a215 between the bottom surface 2 and the long vertical surface 4; there is a positive fold line b116 between any short vertical surface 3 and its corresponding second connecting flap 7; there is a positive fold line b217 between any short vertical surface 3 and its connected top surface 5; and there is a positive fold line e118 between any top surface 5 and its corresponding connected first connecting flap 6. During the forming process, the forming machine first moves the long vertical surface 4 close to the second connecting flap 6. Apply adhesive to the connecting flap 7. Note that this adhesive area is the connection area between the positioning connecting flap 12 and the long facade 4 after the carton is formed. At the same time, the forming machine applies adhesive to the inner side of the first connecting flap 6. Then, it is conveyed to the forming part of the machine via the guide rail. The machine first folds the positive fold line a114 and positive fold line b116 at a positive 90-degree angle. Then, it folds the positive fold line a215 at a positive 90-degree angle, and connects the inner side of the long facade 4 and the positioning connecting flap 12 (the fixed connection is achieved by the above-mentioned adhesive application). Next, fold the double fold line 9 at a forward angle of 180°, so that the inner side of the positioning connecting flap 12 and the inner side of the long side connecting flap 11 are in contact. At the same time as folding the double fold line 9, also fold the reverse fold line 8 in reverse, that is, fold it at a reverse angle of 90°, so that the inner side of the short side connecting flap 10 is in contact with the inner edge of the short facade 3, thus forming the L-shaped column 13. Finally, fold the forward fold line b217 at a forward angle of 90°, and then fold the forward fold line e118 at a forward angle of 90°, so that the inner side of the first connecting flap 6 corresponding to the top surface 5 is connected and fixed to the outer side of the long facade 4 (the fixed connection is achieved by the above-mentioned glue spraying). The carton forming is completed.

[0021] Compared with traditional machine-folded fruit boxes, the above design adds two fold lines at the second connecting flap 7 on the short facade 3 of the cardboard box. That is, the second connecting flap 7 is divided into a short side connecting flap 10, a long side connecting flap 11, and a positioning connecting flap 12. Through two forward folds and one reverse fold, the connecting flap can be connected to both the long facade 4 and the short facade 3 at the same time, thus forming an L-shaped column 13. That is, by changing the folding structure of the paper blank 1, the folded cardboard box is equipped with an L-shaped column 13, which simultaneously strengthens the longitudinal strength of both the long facade 4 and the short facade 3 of the cardboard box, thereby solving the weakness of insufficient strength of the fruit cardboard box.

[0022] In a preferred embodiment, a first hot melt adhesive layer is provided between the inner side of the positioning connecting flap 12 and the inner side of the long side connecting flap 11.

[0023] In the above embodiments, the provision of the first hot melt adhesive layer can, to a certain extent, enhance the tightness of the fit between the inner side of the positioning connecting tab 12 and the long side connecting tab 11, enhance the stability of the L-shaped column 13, and better support the long vertical surface 4 of the carton.

[0024] In a preferred embodiment, a second hot melt adhesive layer is provided between the inner side of the short side connecting flap 10 and the short side surface.

[0025] In the above embodiments, the provision of the second hot melt adhesive layer can, to a certain extent, enhance the tightness of the fit between the inner side of the short side connecting flap 10 and the short side surface, further enhance the stability of the L-shaped column 13, and better support the short vertical surface 3 of the carton.

[0026] In a preferred embodiment, the ratio of the total width of the short side connecting flap 10, the long side connecting flap 11, and the positioning connecting flap 12 to the height of the carton is 0.8-1.15.

[0027] In the above embodiment, the total width value of the sum of the width values ​​of the short side connecting piece 10, the long side connecting piece 11, and the positioning connecting piece 12 is as follows: Figure 1 D1, the height value of the above cardboard box is as follows Figure 1 The ratio of D2 to D1 is 0.8-1.15. This design can save material on the paper blank 1 while meeting the support strength requirements of the L-shaped column 13 for the carton.

[0028] In summary, the embodiments of this utility model provide a cardboard box with an L-shaped column 13 reinforcement structure. By adding a reverse fold line 8 and a double fold line 9 at the second connecting flap 7, an L-shaped column 13 that can simultaneously support the long facade 4 and the short facade 3 of the cardboard box is formed through two forward folds and one reverse fold. This solves the problem of insufficient longitudinal load-bearing capacity of traditional fruit boxes, improves the damage problem of fruit boxes in stacking, storage and logistics transportation, and also reduces the occurrence of product damage caused by fruit box breakage.

Claims

1. A cardboard box with an L-shaped column reinforcement structure, comprising a blank (1), the blank (1) comprising a bottom surface (2), and two alternating short facades (3) and two long facades (4) for enclosing and forming the sidewalls of the cardboard box, wherein the side of each of the two short facades (3) away from the bottom surface (2) is connected to a top surface (5) for forming the top cover of the cardboard box, and both ends of the top surface (5) are provided with first connecting tabs (6) for connecting with the corresponding long facades (4), and both ends of the short facades (3) are provided with second connecting tabs (7) for connecting with the long facades (4), characterized in that, The second connecting flap (7) is arranged horizontally with reverse fold lines (8) and double fold lines (9) in sequence from the outside to the inside. From the outside to the inside of the second connecting flap (7), a short side connecting flap (10), a long side connecting flap (11) and a positioning connecting flap (12) for connecting with the inner side of the long facade (4) are formed. The short side connecting flap (10) and the long side connecting flap (11) are folded by the reverse fold lines (8) and double fold lines (9) to form an L-shaped column (13).

2. The carton having an L-shaped strut reinforcing structure according to claim 1, wherein, A first hot melt adhesive layer is provided between the inner side of the positioning connecting flap (12) and the inner side of the long side connecting flap (11).

3. The carton having an L-shaped strut reinforcing structure of claim 2, wherein, A second hot melt adhesive layer is provided between the inner side of the short side connecting flap (10) and the short side surface.

4. The carton having an L-shaped strut reinforcing structure according to claim 1, wherein, The ratio of the total width of the short side connecting flap, the long side connecting flap, and the positioning connecting flap to the height of the carton is 0.8-1.15.

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