Carton with bonding structure

Abstract

The utility model discloses a carton with a bonding structure, which belongs to the technical field of packaging structures and comprises four side panels and a sealing cover plate, the two ends of the side panels in the width direction extend outwards to form the sealing cover plate, the four side panels jointly form a carton body plate, a connecting end is arranged at one end of the carton body plate in the length direction, and a connecting plate is arranged at the other end of the carton body plate in the length direction. The box body plates and the connecting plates are stacked in the thickness direction through the connecting ends and are fixedly connected to form a box type structure; the side panels and the sealing cover plate are sequentially composed of a wrapping layer, a filling layer, a wrapping layer, a filling layer and a wrapping layer in the thickness direction, and the connecting end is formed by at least one wrapping layer extending outwards from one end of the box body plate in the length direction in the thickness direction. The thickness direction of the connecting plate is formed by at least one wrapping layer which extends outwards from the other end of the box body plate in the length direction; according to the utility model, the consistency of shapes and sizes of cartons is ensured, and the inner walls of the cartons are smoother.

Description

Technical Field

[0001] This utility model relates to the field of packaging structure technology, specifically to a cardboard box with an adhesive structure. Background Technology

[0002] Currently, common packaging cartons are usually made of corrugated cardboard. In the manufacturing process of packaging cartons, several grooves need to be cut on both sides of the width direction of the corrugated cardboard to form a top and bottom cover of the carton. It is also necessary to cut a connecting strip at one end of the length direction of the corrugated cardboard. The connecting strip is fixed to the other end by staples or glue. Then, the corrugated cardboard is folded to form a box-like structure. However, during the process of fixing the corrugated cardboard with staples or glue after it has been cut, factors such as machine compression can deform the corrugated cardboard and cause misalignment at the connecting strip. This results in the connecting strip being fixed at an angle, causing the openings at both ends of the carton to be of different sizes. In particular, the top or bottom cover cannot completely cover the larger opening, resulting in a large gap, while the cover at the smaller opening is prone to mutual obstruction and is difficult to fold.

[0003] Based on the above, Chinese Patent Publication No. CN204150331U discloses a corrugated cardboard box, including corrugated cardboard with grooves on both sides and a connecting strip at one end. Reinforcing hemp rope is provided inside the corrugated cardboard. The corrugated cardboard box is mainly formed by fixing the corrugated cardboard. During the fixing process, the corrugated cardboard needs to be folded so that the connecting strip is folded onto the surface of the other end of the corrugated cardboard before being fixed with nails or glue. However, the surface of the corrugated cardboard does not have a positioning structure that matches the connecting strip. The connecting strip may shift due to the deformation of the corrugated cardboard after folding, resulting in inconsistent opening sizes at both ends of the cardboard box. Therefore, there is still room for improvement in this corrugated cardboard box. Utility Model Content

[0004] To address the technical deficiencies in the background art, this utility model proposes a cardboard box with an adhesive structure, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows:

[0005] A cardboard box with an adhesive structure includes side panels and sealing covers. The side panels are provided in four pieces and are fixedly connected in sequence. The side panels extend outward at both ends in the width direction to form sealing covers. The four side panels together form a box body panel. The box body panel has a connecting end at one end and a connecting plate at the other end in the length direction. The box body panel is stacked and fixedly connected to the connecting plate in the thickness direction through the connecting end to form a box structure.

[0006] The side panel and the sealing cover are composed of a wrapping layer, a filling layer, a wrapping layer, a filling layer, and a wrapping layer in the thickness direction, respectively. The connecting end is formed by at least one wrapping layer extending outward from one end of the box panel in the length direction, and the connecting plate is formed by at least one wrapping layer extending outward from the other end of the box panel in the thickness direction.

[0007] As a further technical solution of this utility model, the connecting end and the connecting plate are located at one of the corners of the side of the box structure, and the connecting end and the connecting plate are respectively located on opposite sides of the side of the box structure in the thickness direction.

[0008] As a further technical solution of this utility model, the thickness direction of the connecting end is formed by a wrapping layer and is located on the outside of the box structure, and the thickness direction of the connecting plate is composed of a wrapping layer, a filling layer, a wrapping layer, a filling layer, and a wrapping layer in sequence, and the connecting plate is located on the inside of the box structure.

[0009] As a further technical solution of this utility model, the connecting plate is provided with an inner lining on the side near the inside of the box structure. The inner lining is formed by a wrapping layer and is fixedly connected to the inner wall of the box structure.

[0010] As a further technical solution of this utility model, the connecting end and the connecting plate are both composed of a wrapping layer, a filling layer and a wrapping layer in the thickness direction, respectively. The connecting end is located on the outside of the box structure and the connecting plate is located on the inside of the box structure.

[0011] As a further technical solution of this utility model, the connecting end is composed of a first cardboard and a first riveting block, the first cardboard is fixedly connected to the end of the box panel, and the first riveting block is fixedly connected to the end of the first cardboard;

[0012] The connecting plate is composed of a second cardboard and a second riveting block. The second cardboard is fixedly connected to the end of the box panel, and the second riveting block is fixedly connected to the end of the second cardboard.

[0013] The first cardboard and the second rivet block are stacked and fixedly connected in the thickness direction; the first rivet block and the second cardboard are stacked and fixedly connected in the thickness direction.

[0014] Both the first and second cardboard are formed by a wrapping layer in the thickness direction, and both the first and second rivet blocks are composed of a wrapping layer, a filling layer, a wrapping layer, a filling layer, and a wrapping layer in the thickness direction, respectively.

[0015] As a further technical solution of this utility model, the adjacent sealing cover plates are not connected to each other, and the four sealing cover plates located at the same end of the box structure are folded inward in sequence to form the top cover or bottom cover of the carton.

[0016] As a further technical solution of this utility model, both ends of the connecting plate extend outward in the width direction to align with the ends of the sealing cover in the width direction. The connecting plate is not connected to the adjacent sealing cover. Both ends of the connecting plate extend in the width direction to the ends of the two adjacent sealing cover plates respectively.

[0017] The beneficial effects of this utility model are as follows:

[0018] This utility model discloses a cardboard box structure fixed by adhesive bonding. The cardboard box is made by folding and bonding cut corrugated paper. The connecting end and the connecting plate serve as the connecting structure for fixing the cardboard box. They can be positioned during the bonding process to keep the connecting structure neat and not tilted, thereby ensuring the consistency of the shape and size of the cardboard box. In addition, the connecting end or the connecting plate will form a groove after cutting and slotting to facilitate mutual positioning. The groove can make the thickness of the connecting structure close to that of a piece of corrugated paper, thereby making the inner wall of the cardboard box flatter. Attached Figure Description

[0019] Figure 1 This is a structural diagram of a cardboard box with an adhesive bonding structure.

[0020] Figure 2 This is a diagram showing the unfolded shape of a cardboard box with an adhesive structure. Figure 1 .

[0021] Figure 3 yes Figure 1 A partial schematic diagram of point A in the middle.

[0022] Figure 4 This is a diagram showing the unfolded shape of a cardboard box with an adhesive structure. Figure 2 .

[0023] Figure 5 This is a schematic diagram of the connection structure in a first embodiment of a cardboard box with an adhesive structure.

[0024] Figure 6 This is a schematic diagram of the connection structure in a second embodiment of a cardboard box with an adhesive structure.

[0025] Figure 7 This is a schematic diagram of the connection structure in a third embodiment of a cardboard box with an adhesive structure.

[0026] Figure 8 This is a schematic diagram of the connection structure in the fourth embodiment of a cardboard box with an adhesive structure.

[0027] Wherein: 1-side panel, 2-sealing cover, 3-connecting end, 31-first cardboard, 32-first rivet block, 4-connecting plate, 41-inner lining, 42-second cardboard, 43-second rivet block, 5-wrapping layer, 6-filling layer. Detailed Implementation

[0028] The embodiments of this utility model will be described below with reference to the accompanying drawings and related examples. The embodiments of this utility model are not limited to the following examples, and this utility model relates to relevant necessary components in this technical field, which should be regarded as well-known technology in this technical field and can be known and mastered by those skilled in this technical field.

[0029] Reference Figure 1 , Figure 2 , Figure 3 A cardboard box with an adhesive structure includes a side panel 1 and a sealing cover 2. The side panel 1 has four pieces that are fixedly connected in sequence. The side panel 1 extends outward at both ends in the width direction to form the sealing cover 2. The four side panels 1 together form a box body panel. The box body panel has a connecting end 3 at one end in the length direction and a connecting plate 4 at the other end. The box body panel is stacked and fixedly connected to the connecting plate 4 in the thickness direction through the connecting end 3 to form a box structure. The side panel 1 and the sealing cover 2 are composed of a wrapping layer 5, a filling layer 6, a wrapping layer 5, a filling layer 6, and a wrapping layer 5 in the thickness direction in sequence. The connecting end 3 is formed by at least one wrapping layer 5 extending outward from one end in the length direction of the box body panel in the thickness direction. The connecting plate 4 is formed by at least one wrapping layer 5 extending outward from the other end in the length direction of the box body panel in the thickness direction.

[0030] The cardboard box of this utility model is selected from corrugated cardboard boxes, color-printed cardboard boxes, and insulated cardboard boxes, preferably corrugated cardboard boxes. The wrapping layer 5 is preferably kraft paper, and the filling layer 6 is preferably corrugated core paper with a wavy shape. Two wrapping layers 5 and three filling layers 6 are stacked along the thickness direction and fixed with adhesive to form corrugated paper. Several grooves are formed on both sides of the corrugated paper in the width direction, and several sealing covers 2 are formed between the grooves. The unsealed portion between the sealing covers 2 on both sides of the corrugated paper in the width direction forms a side panel 1. In addition, a narrow connecting plate 4 is formed on the outside of the groove at one end of the corrugated paper along the length direction. Both ends of the connecting plate 4 extend outward to align with the ends of the sealing cover 2 in the width direction. The connecting plate 4 is not connected to the adjacent sealing cover 2. Both ends of the connecting end 3 extend along the width direction to the ends of the two adjacent sealing cover 2. At the same time, the adjacent sealing cover 2 is not connected to each other. The four sealing cover 2 located at the same end of the box structure are folded inward in sequence to form the top cover or bottom cover of the carton.

[0031] After corrugated paper is cut, sealing cover plate 2 and connecting plate 4 are formed. Then, the cut corrugated paper is folded so that connecting plate 4 and connecting end 3 are stacked and aligned. After applying an appropriate amount of adhesive between connecting plate 4 and connecting end 3, it is pressed and fixed. After the adhesive cures, a box structure is obtained. Connecting end 3 and connecting plate 4 are located at one corner of the side of the box structure. Connecting end 3 and connecting plate 4 are located on opposite sides of the side of the box structure in the thickness direction. There are four sealing cover plates 2 at both ends of the box structure. The four sealing cover plates 2 are folded relative to each other to form the top cover and bottom cover of the box structure, thus obtaining a carton. Connecting end 3 and connecting plate 4 together form the connecting structure of the carton.

[0032] In some embodiments, refer to Figure 4 The connecting plate 4 is aligned with the ends of the side panel 1 in the width direction from both ends. At the same time, the connecting ends 3 extend to both ends of the side panel in the width direction. In this embodiment, the connecting plate 4 is only glued and fixed to the inside of the side panel 1. The connecting plate 4 is not glued and fixed to the inside of the sealing cover 2. Since the sealing cover 2 of the carton may need to be frequently swung to open or close the carton, if the connecting plate 4 is glued and fixed to the inside of the sealing cover 2 in these frequently opened and closed cartons, the connection between the sealing cover 2 and the side panel 1 will need to be frequently bent, which may easily cause the adhesive between the connecting plate 4 and the connecting ends 3 to fall off. In this embodiment, the connecting ends 3 do not extend to the connection between the sealing cover 2 and the side panel 1, which can avoid the phenomenon of delamination in the above-mentioned usage scenarios and help improve the firmness of the carton.

[0033] As a first preferred embodiment of this utility model, refer to Figure 5 The thickness direction of the connecting end 3 is formed by a wrapping layer 5 and is located on the outside of the box structure. The thickness direction of the connecting plate 4 is composed of wrapping layer 5, filling layer 6, wrapping layer 5, filling layer 6, and wrapping layer 5 in sequence. The connecting plate 4 is located on the inside of the box structure. Based on the above structure, when the cut corrugated paper is fixed with adhesive, the two wrapping layers 5 and two filling layers 6 are removed from the side of the corrugated paper away from the connecting plate 4 by partially cutting and grooving, leaving only the outer wrapping layer 5, so that the end of the corrugated paper forms a connecting end 3 that matches the connecting plate 4. The connecting end 3 will form a groove in the box structure. During the fixing process of the box structure, after the corrugated paper is folded, the connecting plate 4 can be placed inside the connecting end 3. The connecting end 3 can serve as a positioning structure for the connecting plate 4, so that the connecting plate 4 can be stacked and fixed more neatly with the connecting end 3, thereby keeping the fixed connecting structure neat and not shifting, and thus keeping the openings at both ends of the carton the same size.

[0034] As a second preferred embodiment of this utility model, refer to Figure 6The connecting plate 4 has an inner facing 41 on the side near the inside of the box structure. The inner facing 41 is formed by a wrapping layer 5 and is fixedly connected to the inner wall of the box structure. This embodiment is an improvement of the first preferred embodiment. In this embodiment, the inner facing 41 and the wrapping layer 5 on the inside of the box structure of the connecting plate 4 are integrally formed. The inner facing 41 extends along the inner wall of the box structure. The inner facing 41 can cover the gap between the end of the connecting plate 4 and the connecting end 3. Adhesive is applied between the inner facing 41 and the box structure. The inner facing 41 can improve the firmness of the bonding between the connecting plate 4 and the connecting end 3 and avoid the phenomenon of glue separation in the gap between the end of the connecting plate 4 and the connecting end 3.

[0035] As a third preferred embodiment of this utility model, refer to Figure 7 Both the connecting end 3 and the connecting plate 4 are composed of a wrapping layer 5, a filling layer 6, and another wrapping layer 5 in the thickness direction. The connecting end 3 is located on the outside of the box structure, and the connecting plate 4 is located on the inside of the box structure. In this embodiment, both the connecting end 3 and the connecting plate 4 are formed with matching grooves by partially cutting and slotting. The connecting end 3 and the connecting plate 4 are positioned and bonded together by two matching grooves, which can keep the fixed connection structure neat and without deviation. In addition, both the connecting end 3 and the connecting plate 4 retain a structure of three layers: two wrapping layers 5 and one filling layer 6, which makes the connecting end 3 and the connecting plate 4 maintain high structural strength and is conducive to improving the strength of the bonded connection structure.

[0036] As a fourth preferred embodiment of this utility model, refer to Figure 8 The connecting end 3 is composed of a first cardboard 31 and a first rivet block 32. The first cardboard 31 is fixedly connected to the end of the box panel, and the first rivet block 32 is fixedly connected to the end of the first cardboard 31. The connecting plate 4 is composed of a second cardboard 42 and a second rivet block 43. The second cardboard 42 is fixedly connected to the end of the box panel, and the second rivet block 43 is fixedly connected to the end of the second cardboard 42. The first cardboard 31 and the second rivet block 43 are stacked and fixedly connected in the thickness direction, and the first rivet block 32 and the second cardboard 42 are stacked and fixedly connected in the thickness direction. The thickness direction of the first cardboard 31 and the second cardboard 42 is formed by a wrapping layer 5, and the thickness direction of the first rivet block 32 and the second rivet block 43 is composed of a wrapping layer 5, a filling layer 6, a wrapping layer 5, a filling layer 6, and a wrapping layer 5 in sequence.

[0037] In this embodiment, a first groove is formed between the first cardboard 31 and the first rivet block 32, and a second groove is formed between the second cardboard 42 and the second rivet block 43. Both the first and second grooves can be formed by partially cutting and slotting. During the positioning process of the connecting end 3 and the connecting plate 4, the first rivet block 32 is embedded in the second groove, and the second rivet block 43 is embedded in the first groove. This allows the connecting end 3 and the connecting plate 4 to be precisely positioned, and the connecting end 3 and the connecting plate 4 are not easy to separate after positioning. This can prevent the connecting end 3 and the connecting plate 4 from separating during the curing process after the adhesive is applied, thus making the bonded connection structure more secure.

[0038] In combination with the above four embodiments, the box structure of this utility model is formed by folding and gluing cut corrugated paper. The connecting end 3 and the connecting plate 4 serve as the connecting structure for gluing and fixing the box structure. They can be positioned during the gluing and fixing process to keep the connecting structure neat and non-tilted, thereby ensuring the consistency of the shape and size of the box structure. In common cardboard boxes, the connecting strip used for fixing by nails or adhesives is fixed inside the cardboard box. The position where the connecting strip is fixed has the thickness of two pieces of corrugated paper. The connecting strip will protrude inside the cardboard box and occupy part of the space. In the technical solution of this utility model, the connecting end 3 or the connecting plate 4 will form a groove that facilitates mutual positioning after cutting and slotting. The groove can make the thickness of the connecting structure close to that of one piece of corrugated paper, thereby making the inner wall of the box structure flatter.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A carton of the type having a structure comprising side panels (1), a closure flap (2), characterised in that, The side panel (1) is provided with four pieces and is sequentially fixedly connected, the side panel (1) extends outward at both ends in the width direction and forms a sealing cover plate (2), the four pieces of the side panel (1) jointly form a box body plate, one end of the box body plate in the length direction is provided with a connecting end (3), the other end is provided with a connecting plate (4), and the box body plate is stacked and fixedly connected through the connecting end (3) and the connecting plate (4) in the thickness direction to form a box structure; The thickness direction of the side panel (1) and the sealing cover plate (2) sequentially comprises a wrapping layer (5), a filling layer (6), a wrapping layer (5), a filling layer (6) and a wrapping layer (5), the thickness direction of the connecting end (3) is formed by at least one wrapping layer (5) extending outward from one end of the box body plate in the length direction, and the thickness direction of the connecting plate (4) is formed by at least one wrapping layer (5) extending outward from the other end of the box body plate in the length direction.

2. The carton of claim 1 wherein, The connecting end (3) and the connecting plate (4) are located at one of the corners of the side of the box structure, and the connecting end (3) and the connecting plate (4) are respectively located on opposite sides of the side of the box structure in the thickness direction.

3. The carton of claim 1 wherein, The thickness direction of the connecting end (3) is formed by one wrapping layer (5) and is located on the outside of the box structure, the thickness direction of the connecting plate (4) sequentially comprises a wrapping layer (5), a filling layer (6), a wrapping layer (5), a filling layer (6) and a wrapping layer (5), and the connecting plate (4) is located on the inside of the box structure.

4. The carton of adhered construction according to claim 3, wherein, The connecting plate (4) is provided with an inner lining (41) close to one side of the inside of the box structure, the inner lining (41) is formed by one wrapping layer (5), and the inner lining (41) is fixedly connected with the inner wall of the box structure.

5. The carton of claim 1 wherein, The thickness direction of the connecting end (3) and the connecting plate (4) sequentially comprises a wrapping layer (5), a filling layer (6) and a wrapping layer (5), the connecting end (3) is located on the outside of the box structure, and the connecting plate (4) is located on the inside of the box structure.

6. The carton of claim 1 wherein, The connecting end (3) is composed of a first paperboard (31) and a first riveting block (32), the first paperboard (31) is fixedly connected with the end portion of the box body plate, and the first riveting block (32) is fixedly connected with the end portion of the first paperboard (31); The connecting plate (4) is composed of a second paperboard (42) and a second riveting block (43), the second paperboard (42) is fixedly connected with the end portion of the box body plate, and the second riveting block (43) is fixedly connected with the end portion of the second paperboard (42); The first paperboard (31) and the second riveting block (43) are stacked and fixedly connected in the thickness direction, and the first riveting block (32) and the second paperboard (42) are stacked and fixedly connected in the thickness direction; The thickness direction of the first paperboard (31) and the second paperboard (42) is formed by one wrapping layer (5), and the thickness direction of the first riveting block (32) and the second riveting block (43) sequentially comprises a wrapping layer (5), a filling layer (6), a wrapping layer (5), a filling layer (6) and a wrapping layer (5).

7. The carton of claim 1 wherein, The adjacent sealing cover plates (2) are not connected with each other, and four sealing cover plates (2) at the same end of the box structure are sequentially folded inward to form a top cover or a bottom cover of the carton.

8. The carton of claim 1 wherein, The width direction ends of the connecting plate (4) extend outward to align with the width direction ends of the sealing cover plate (2), the connecting plate (4) is not connected with the adjacent sealing cover plate (2), and the two ends of the connecting end (3) extend along the width direction to the ends of the adjacent two sealing cover plates (2).

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