Paperboard piece and packaging box

Abstract

The utility model relates to a paperboard piece and a packaging box. The paper honeycomb core board comprises honeycomb cylinders and reinforcing lug plates, the multiple honeycomb cylinders are arranged, each honeycomb cylinder comprises an opening, the reinforcing lug plates are connected with the honeycomb cylinders, the reinforcing lug plates are arranged corresponding to the openings, and the area of the reinforcing lug plates is smaller than that of the openings; and the surface paperboard covers the opening of the honeycomb cylinder, and the end face of the honeycomb cylinder and the reinforcing lug plate are respectively bonded with the surface paperboard. According to the paperboard piece, the compression resistance and damage resistance effects of the paperboard piece can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the packaging technical field, in particular to a paperboard piece and a packaging box. BACKGROUND

[0002] In the related art, the composite paperboard includes a face paper and an intermediate paper product. The face paper is generally thin, and the intermediate paper product can be a paperboard material. Because the existing intermediate paper product generally has a large thickness, weight and hardness, it mainly plays a supporting and buffering role, for example, mainly being corrugated paper. The corrugated paper is in a whole wave shape. Generally, 1 meter of the composite paperboard needs 1.5 meters of the corrugated paper. The amount of the corrugated paper is relatively large, and at the same time, the weight of the composite paperboard per unit volume is relatively heavy. The intermediate paper product can also be a three-dimensional honeycomb paper with a large hardness, which is beneficial to reduce the weight of the composite paperboard per unit volume. The three-dimensional honeycomb paper includes a plurality of honeycomb tubes arranged in parallel. The face paper covers the opening of the honeycomb tube. The end surface of the honeycomb tube and the face paper are bonded. Because the bonding area between the end surface of the honeycomb tube and the face paper is small, the connection strength between the honeycomb tube and the face paper is poor, and thus the honeycomb tube and the face paper are delaminated and peeled off, the face paper is easily layered from the honeycomb tube, the compression resistance and damage resistance of the composite paperboard are poor, and product quality problems are prone to occur. CONTENT OF THE UTILITY MODEL

[0003] The paperboard piece and the packaging box provided by the embodiments of the present application are beneficial to improve the compression resistance and damage resistance of the paperboard piece.

[0004] The paperboard piece provided by the embodiments of the present application includes:

[0005] The paper honeycomb core board includes a honeycomb tube and a reinforcing lug plate. A plurality of honeycomb tubes are arranged. The honeycomb tube includes an opening. The reinforcing lug plate is connected with the honeycomb tube. The reinforcing lug plate is arranged corresponding to the opening. The area of the reinforcing lug plate is smaller than the area of the opening.

[0006] The face paper board covers the opening of the honeycomb tube. The end surface of the honeycomb tube and the reinforcing lug plate are respectively bonded with the face paper board.

[0007] The paperboard piece includes a paper honeycomb core plate and a surface paperboard. The paper honeycomb core plate and the surface paperboard are both of paper material, and have good environmental friendliness and are not easy to pollute the environment. The paper honeycomb core plate is a three-dimensional honeycomb paper having a plurality of honeycomb tubes. The unit volume weight of the paper honeycomb core plate is relatively small, which is conducive to reducing the unit volume weight of the paperboard piece, thereby facilitating reduction of the overall weight of the paperboard piece. The paper honeycomb core plate can provide support to the surface paperboard, improving the impact resistance and extrusion resistance of the surface paperboard. When the surface paperboard is subjected to an impact force or an extrusion force, the surface paperboard can transmit the force to the paper honeycomb core plate, and the force is dispersed and buffered by the paper honeycomb core plate. In the paper honeycomb core plate, the reinforcing ear plates provided on the honeycomb tubes correspond to the openings of the honeycomb tubes. The reinforcing ear plates can reuse the space at the openings. The reinforcing ear plates can shield part of the openings. The end faces of the honeycomb tubes and the reinforcing ear plates are respectively bonded to the surface paperboard, thereby increasing the bonding area between the paper honeycomb core plate and the surface paperboard, facilitating the strengthening of the bonding strength between the paper honeycomb core plate and the surface paperboard, reducing the possibility of delamination and peeling between the paper honeycomb core plate and the surface paperboard due to the relatively small bonding strength therebetween, improving the pressure resistance and damage resistance of the paperboard piece, and improving the product quality of the paperboard piece.

[0008] In some possible implementations, a plurality of reinforcing ear plates are provided on the same honeycomb tube, and the plurality of reinforcing ear plates are arranged along the circumference of the honeycomb tube.

[0009] In some possible implementations, the plurality of reinforcing ear plates on the same honeycomb tube are arranged at intervals along the circumference of the honeycomb tube.

[0010] In some possible implementations, the honeycomb tube includes a plurality of side walls, the plurality of side walls are sequentially connected, and the reinforcing ear plate is provided on at least one side wall of the honeycomb tube.

[0011] In some possible implementations, the honeycomb tube includes six side walls, and the cross section of the honeycomb tube is a hexagon.

[0012] In some possible implementations, the paper honeycomb core plate includes a plurality of paper strips, each paper strip includes opposite first and second surfaces, the first and second surfaces are alternately provided with bonding areas, adjacent two paper strips are bonded through the bonding areas and form a bonding part, and each paper strip is bonded and forms a plurality of honeycomb tubes.

[0013] In some possible implementations, the reinforcing ear plate is provided on each paper strip, and the reinforcing ear plate and the paper strip are in an integral molding structure.

[0014] In some possible implementations, the reinforcing ear plate is in a rectangular, circular or triangular shape.

[0015] In some possible implementation manners, the paper honeycomb core plate comprises an edge connecting part connected with the outermost honeycomb cylinder, and a reinforcing lug is arranged on the edge connecting part, and an end surface of the edge connecting part and the reinforcing lug arranged on the edge connecting part are respectively bonded with the face paper plate.

[0016] In some possible implementation manners, along the axial direction of the honeycomb cylinder, the honeycomb cylinder comprises two opposite openings, and a reinforcing lug is arranged on the honeycomb cylinder corresponding to each of the two openings, and face paper plates are arranged on both sides of the honeycomb cylinder along the axial direction of the honeycomb cylinder.

[0017] The paperboard piece provided by the embodiment of the present application is used to form a packaging box.

[0018] In some possible implementation manners, the packaging box comprises a side plate, and the side plate comprises the paperboard piece. BRIEF DESCRIPTION OF DRAWINGS

[0019] The features, advantages and technical effects of the exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0020] Figure 1 is a partial structural schematic view of a paperboard piece of an embodiment of the present application;

[0021] Figure 2 is a partial structural schematic view of a paperboard piece of an embodiment of the present application;

[0022] Figure 3 is a partial structural schematic view of a paperboard piece of an embodiment of the present application;

[0023] Figure 4 is a partial structural schematic view of a paper honeycomb core plate of an embodiment of the present application;

[0024] Figure 5 is a partial structural schematic view of a paperboard piece of an embodiment of the present application;

[0025] Figure 6 is a partial structural schematic view of a paper honeycomb core plate of an embodiment of the present application;

[0026] Figure 7 is a partial structural schematic view of a paper honeycomb core plate of an embodiment of the present application;

[0027] Figure 8 is a partial structural schematic view of a paper honeycomb core plate of an embodiment of the present application;

[0028] Figure 9 is a partial structural schematic view of a paper honeycomb core plate of an embodiment of the present application;

[0029] Figure 10 is a partial structural schematic view of a paperboard piece of an embodiment of the present application;

[0030] Figure 11 Figure 1 is a schematic view of a partial structure of a packaging box according to an embodiment of the present application.

[0031] In the drawings, the same components have the same reference numerals, and the drawings are not drawn to scale.

[0032] Legend of reference numerals:

[0033] 10, paperboard piece;

[0034] 20, paper honeycomb core board; 201, paper strip; 2011, first surface; 2012, second surface; 2013, bonding area; 202, bonding part; 21, honeycomb cylinder; 21a, side wall; 211, opening; 212, end face; 22, reinforcing lug; 23, edge connecting part;

[0035] 30, face paperboard;

[0036] 100, packaging box;

[0037] 110, side plate;

[0038] Z, axial direction. DETAILED DESCRIPTION

[0039] The embodiments of the present application will be described in further detail below with reference to the drawings and embodiments. The detailed description and drawings of the following embodiments are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application, i.e., the present application is not limited to the described embodiments.

[0040] In the description of the present application, it should be noted that, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer" and the like are merely for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third", etc. are only for the purpose of description and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable range of error. "Parallel" is not strictly parallel, but within the allowable range of error.

[0041] In the present application, the phrase "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase at various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present application can be combined with other embodiments.

[0042] The positional words appearing in the following description are the directions shown in the drawings, and are not intended to limit the specific structure of the present application. In the description of the present application, it should be further explained that the terms "mounting", "connecting", "connection" should be understood in a broad sense unless otherwise specifically defined and limited, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] Figure 1 The partial structure of the paperboard piece 10 is schematically shown. Figure 2 The partial structure of the paperboard piece 10 is schematically shown. Figure 3 The partial structure of the paperboard piece 10 is schematically shown. Figure 4 The partial structure of the paperboard piece 10 is schematically shown. Figure 5 The partial structure of the paperboard piece 10 is schematically shown. Figure 6 The forming process of the paper honeycomb core board 20 is schematically shown. Figure 7 The forming process of the paper honeycomb core board 20 is schematically shown. Figure 8 The partial structure of the paper honeycomb core board 20 is schematically shown. Figure 9 The partial structure of the paper honeycomb core board 20 is schematically shown. Figure 10 The partial structure of the paperboard piece 10 is schematically shown. Figure 11 The partial structure of the paperboard piece 10 is schematically shown. Figures 1 to 11 The partial structure of the paperboard piece 10 is schematically shown.

[0044] Referring to Figures 1 to 4 The paperboard piece 10 provided by the embodiments of the present application includes a paper honeycomb core board 20 and a face paper board 30.

[0045] The paper honeycomb core board 20 includes honeycomb tubes 21 and reinforcing ear plates 22. A plurality of honeycomb tubes 21 are arranged. The honeycomb tube 21 includes an opening 211. The reinforcing ear plate 22 is connected with the honeycomb tube 21. The reinforcing ear plate 22 is arranged corresponding to the opening 211. The area of the reinforcing ear plate 22 is smaller than the area of the opening 211. The face paper board 30 covers the opening 211 of the honeycomb tube 21. The end surface 212 of the honeycomb tube 21 and the reinforcing ear plate 22 are respectively bonded with the face paper board 30.

[0046] In the embodiment of the present application, the paper honeycomb core plate 20 is a three-dimensional honeycomb structure. The honeycomb cylinder 21 is a hollow structure with a central hole, so that the paper honeycomb core plate 20 can reduce the overall weight of the paper honeycomb core plate 20 itself while meeting the bearing capacity requirements. A plurality of honeycomb cylinders 21 are arranged in sequence. The opening 211 of the honeycomb cylinder 21 is in communication with the central hole. Along the axial direction Z of the honeycomb cylinder 21, the honeycomb cylinder 21 has two opposite end faces 212. The axial direction Z of the honeycomb cylinder 21 can be the same as the thickness direction of the paperboard piece 10. The honeycomb cylinder 21 can be a straight cylinder. In some realizable modes, the reinforcing lug plate 22 can be connected to the end face 212 of the honeycomb cylinder 21. The reinforcing lug plate 22 can shield part of the opening 211, and the reinforcing lug plate 22 does not completely cover the opening 211.

[0047] In some realizable modes, an adhesive is coated on the end face 212 of the honeycomb cylinder 21 and the reinforcing lug plate 22 in advance, and then the face paperboard 30 is covered on the end face 212 of the honeycomb cylinder 21 and the reinforcing lug plate 22, and the end face 212 of the honeycomb cylinder 21 and the reinforcing lug plate 22 are bonded with the face paperboard 30 through the adhesive. In some examples, the adhesive can be adhesive glue.

[0048] The paperboard piece 10 of the embodiment of the present application includes the paper honeycomb core plate 20 and the face paperboard 30. The paper honeycomb core plate 20 and the face paperboard 30 are both paper materials, which have good environmental friendliness and are not easy to pollute the environment. The paper honeycomb core plate 20 is a three-dimensional honeycomb paper with a plurality of honeycomb cylinders 21. The unit volume weight of the paper honeycomb core plate 20 itself is relatively small, which is conducive to reducing the unit volume weight of the paperboard piece 10, thereby being conducive to reducing the overall weight of the paperboard piece 10. The paper honeycomb core plate 20 can provide a supporting effect for the face paperboard 30, improving the impact resistance and extrusion resistance of the face paperboard 30. When the face paperboard 30 is subjected to an impact force or an extrusion force, the face paperboard 30 can transmit the force to the paper honeycomb core plate 20 and disperse and buffer through the paper honeycomb core plate 20. In the paper honeycomb core plate 20, the reinforcing lug plate 22 provided on the honeycomb cylinder 21 corresponds to the opening 211 of the honeycomb cylinder 21. The reinforcing lug plate 22 can reuse the space at the opening 211. The reinforcing lug plate 22 can shield part of the opening 211. The end face 212 of the honeycomb cylinder 21 and the reinforcing lug plate 22 are bonded with the face paperboard 30 respectively, thereby increasing the bonding area between the paper honeycomb core plate 20 and the face paperboard 30, being conducive to strengthening the bonding strength between the paper honeycomb core plate 20 and the face paperboard 30, reducing the possibility of delamination and peeling between the paper honeycomb core plate 20 and the face paperboard 30 due to the relatively small bonding strength between the paper honeycomb core plate 20 and the face paperboard 30, improving the pressure resistance and damage resistance of the paperboard piece 10, and improving the product quality of the paperboard piece 10.

[0049] In some realizable modes, referring to Figure 1 and Figure 2As shown, along the axial direction Z of the honeycomb cylinder 21, the honeycomb cylinder 21 comprises two opposite openings 211. The honeycomb cylinder 21 is provided with a reinforcing lug plate 22 corresponding to each of the two openings 211. Along the axial direction Z of the honeycomb cylinder 21, the two sides of the honeycomb cylinder 21 are both provided with the reinforcing lug plate 22. The honeycomb cylinder 21 is provided with the reinforcing lug plate 22 corresponding to each of the two openings 211. Along the axial direction Z of the honeycomb cylinder 21, the two sides of the honeycomb cylinder 21 are both provided with the face paper plate 30.

[0050] The face paper plates 30 on the two sides of the honeycomb cylinder 21 are respectively bonded to the end face 212 of the honeycomb cylinder 21 and the reinforcing lug plate 22, which is conducive to increasing the bonding area between the paper honeycomb core plate 20 and the face paper plates 30 on the two sides and is conducive to strengthening the bonding strength between the paper honeycomb core plate 20 and the face paper plates 30 on the two sides.

[0051] In some possible implementation manners, referring to Figure 5 As shown, the same honeycomb cylinder 21 is provided with a plurality of reinforcing lug plates 22. The plurality of reinforcing lug plates 22 are arranged along the circumferential direction of the honeycomb cylinder 21.

[0052] The plurality of reinforcing lug plates 22 provided on the same honeycomb cylinder 21 can be bonded to the face paper plate 30, thereby increasing the number of bonding points between the paper honeycomb core plate 20 and the face paper plate 30, further increasing the bonding area between the paper honeycomb core plate 20 and the face paper plate 30, and being conducive to further strengthening the bonding strength between the paper honeycomb core plate 20 and the face paper plate 30.

[0053] In some examples, the plurality of reinforcing lug plates 22 on the same honeycomb cylinder 21 are arranged at intervals along the circumferential direction of the honeycomb cylinder 21. The same honeycomb cylinder 21 is provided with a plurality of reinforcing lug plates 22, and there is no overlap between the plurality of reinforcing lug plates 22. If different reinforcing lug plates 22 overlap, only one reinforcing lug plate 22 in the overlapping area can be bonded to the face paper plate 30, and the other reinforcing lug plate 22 in the overlapping area cannot be bonded to the face paper plate 30, thereby causing material waste and increasing production cost.

[0054] The total area of each reinforcing lug plate 22 is less than the area of the opening 211, so that the plurality of reinforcing lug plates 22 can shield part of the opening 211, and the plurality of reinforcing lug plates 22 do not completely cover the opening 211.

[0055] In some possible implementation manners, referring to Figure 4 and Figure 5 As shown, the honeycomb cylinder 21 comprises a plurality of side walls 21a. The plurality of side walls 21a are sequentially connected along the circumferential direction of the honeycomb cylinder 21. The cross section of the honeycomb cylinder 21 is a polygon. The reinforcing lug plate 22 is arranged on at least one side wall 21a of the honeycomb cylinder 21.

[0056] The different honeycomb tubes 21 can be bonded to each other through at least part of the side walls 21a, so as to realize connection and fixation between the plurality of honeycomb tubes 21, and facilitate the conduction and buffering of impact force between the different honeycomb tubes 21. The side wall 21a of the honeycomb tube 21 has a relatively large area, which is beneficial to increase the bonding area between the different honeycomb tubes 21, and is beneficial to increase the bonding strength between the different honeycomb tubes 21, and reduce the possibility of loosening and separation between the different honeycomb tubes 21.

[0057] In some examples, the cross section of the honeycomb tube 21 can be polygonal. The at least one side wall 21a of the honeycomb tube 21 is provided with a reinforcing lug 22.

[0058] For example, as shown in Figure 4 For example, as shown in

[0059] For example, as shown in Figure 5 For example, as shown in

[0060] For example, the honeycomb tube 21 includes six side walls 21a. The cross section of the honeycomb tube 21 can be hexagonal. For example, the cross section of the honeycomb tube 21 can be regular hexagonal.

[0061] The honeycomb tube 21 with a hexagonal structure can uniformly disperse the external force to the adjacent six side walls 21a when the external force is applied, reduce local stress concentration, thereby enhancing the overall compression resistance and impact resistance of the honeycomb tube 21, and facilitating the improvement of the overall compression resistance and impact resistance of the paper honeycomb core board 20.

[0062] In some realizable manners, as shown in Figure 6 For example, as shown in

[0063] After the processing and manufacturing of each paper strip 201, an adhesive is arranged on the bonding area 2013 of each paper strip 201, and then each paper strip 201 is bonded to each other to form the paper honeycomb core board 20, which is beneficial to reduce the overall processing and forming difficulty of the paper honeycomb core board 20 and reduce the processing cost.

[0064] In some examples, each paper strip 201 is provided with a reinforcing lug 22. The reinforcing lug 22 is integrally formed with the corresponding paper strip 201, which is advantageous in increasing the connection strength between the paper strip 201 and the corresponding reinforcing lug 22, so that the paper strip 201 and the corresponding reinforcing lug 22 are not easily separated from each other, and meanwhile, the paper strip 201 and the corresponding reinforcing lug 22 do not need to be connected by assembly, which is advantageous in reducing the processing procedures.

[0065] Exemplarily, referring to Figure 7 It is shown that a paper blank is provided, and the paper strip 201 with the reinforcing lug 22 is formed by machining. The reinforcing lug 22 is integrally formed with the paper strip 201. Then, a plurality of paper strips 201 with the reinforcing lug 22 are adhered to each other. In the direction of stacking the paper strips 201, each paper strip 201 is stretched, and each paper strip 201 is deformed to form the paper honeycomb core 20 with the honeycomb cylinder 21. The reinforcing lug 22 in the upright state is pressed down so that the reinforcing lug 22 corresponds to the opening 211. For example, a roller can be used to press the reinforcing lug 22 in the upright state to press the reinforcing lug 22 down.

[0066] The end face 212 of the honeycomb cylinder 21 and the reinforcing lug 22 are coated with an adhesive, and then the face paper 30 is laminated with the paper honeycomb core 20, and the end face 212 of the honeycomb cylinder 21 and the reinforcing lug 22 are adhered to the face paper 30, respectively.

[0067] In some examples, the paper blank can be rectangular as a whole. A straight cutting knife can be used to cut and remove excess material from the paper blank to process the reinforcing lug 22 and the paper strip 201 into an integral structure.

[0068] In some examples, the reinforcing lug 22 is arranged on one side wall 21a of one honeycomb cylinder 21. Each reinforcing lug 22 can be pressed down in the same direction, so that during the coating of the adhesive, the coating equipment can coat the adhesive on the reinforcing lug 22 and the end face 212 of the honeycomb cylinder 21 along the direction in which the reinforcing lug 22 is pressed down, so that the reinforcing lug 22 will not be pulled back to the upright state from the pressed-down state by the pulling force of the coating equipment, which is advantageous in reducing the difficulty of coating the adhesive.

[0069] In some examples, the reinforcing lug 22 can be rectangular in shape. The reinforcing lug 22 itself has a relatively regular shape, and the difficulty of processing the reinforcing lug 22 by machining is relatively low, which is advantageous in reducing the processing cost.

[0070] In some examples, referring to Figure 8 and Figure 9As shown, the shape of the reinforcing lug 22 can be circular or triangular. Compared with the case where the reinforcing lug 22 is rectangular, in the case where the reinforcing lug 22 is circular or triangular, the height of the reinforcing lug 22 itself protruding from the side wall 21a is equal to the width of the reinforcing lug 22 which is rectangular, and the area of the reinforcing lug 22 itself is relatively small in the case where the bottom edge of the reinforcing lug 22 itself is equal to the length of the reinforcing lug 22 which is rectangular. Therefore, when the bonding strength between the reinforcing lug 22 and the face paper 30 meets the requirement, the amount of the adhesive coated on the reinforcing lug 22 is relatively small, which is beneficial to save the amount of the adhesive and reduce the processing cost.

[0071] In some possible implementation manners, referring to Figure 10 As shown, the paper honeycomb core board 20 comprises an edge connecting portion 23. The edge connecting portion 23 is arranged on the outer side of the honeycomb cylinder 21. The edge connecting portion 23 is connected with the outermost honeycomb cylinder 21. The reinforcing lug 22 is arranged on the edge connecting portion 23. The end surface of the edge connecting portion 23 and the reinforcing lug 22 arranged on the edge connecting portion 23 are respectively bonded with the face paper 30.

[0072] The part of the edge region of the paper honeycomb core board 20 which is not formed with the complete honeycomb cylinder 21 forms the edge connecting portion 23. The other regions of the paper honeycomb core board 20 except the edge connecting portion 23 are all formed with the complete honeycomb cylinder 21 structure. The bonding mode of the end surface of the edge connecting portion 23 and the reinforcing lug 22 arranged on the edge connecting portion 23 with the face paper 30 is beneficial to increase the bonding area between the edge region of the paper honeycomb core board 20 and the face paper 30, and to strengthen the bonding strength between the edge region of the paper honeycomb core board 20 and the face paper 30, thereby reducing the possibility of delamination or peeling between the edge connecting portion 23 and the face paper 30 due to the relatively small bonding strength therebetween.

[0073] If the edge connecting portion 23 and the face paper 30 are delaminated or peeled, the edge of the face paper 30 is easy to be warped under the pulling force, which affects the appearance of the paper board 10. Meanwhile, the edge of the paper honeycomb core board 20 loses the protection of the face paper 30, which also reduces the compression resistance and impact resistance of the paper board 10 in the edge region.

[0074] In some possible implementation manners, the paper honeycomb core board 20 can be made of kraft paper. The paper honeycomb core board 20 made of kraft paper has good flexibility and can be naturally degraded, which does not pollute the environment.

[0075] In some possible implementation manners, the paper honeycomb core board 20 comprises a plurality of paper strips 201. The plurality of paper strips 201 are spliced with each other to form the plurality of honeycomb cylinders 21.

[0076] Exemplarily, the paper strip 201 can be soft paper or hard paper. The paper strip 201 can have a grammage of 80 g / m2to 200 g / m2.

[0077] Exemplarily, the paper strip 201 and the reinforcing lug plate 22 in the paper honeycomb core plate 20 are both kraft paper.

[0078] Exemplarily, the paper strip 201 can have a thickness of 0.1 mm to 0.2 mm. The reinforcing lug plate 22 can have a thickness of 0.1 mm to 0.2 mm.

[0079] Referring to Figure 11 As shown, the paperboard piece 10 is used to fold and connect to form a packaging box 100 that meets the product requirements.

[0080] In some possible implementations, referring to Figure 11 As shown, the packaging box 100 includes a side plate 110. The side plate 110 includes the paperboard piece 10. In the case that the packaging box 100 is loaded with articles, the side plate 110 of the packaging box 100 is used to form a protection for the articles on the side of the articles. During the transportation of the packaging box 100, the face paperboard 30 is easily subjected to a shearing force in a direction perpendicular to the axial direction Z of the honeycomb cylinder 21.

[0081] If the bonding strength between the paper honeycomb core plate 20 and the face paperboard 30 is relatively small, the paper honeycomb core plate 20 and the face paperboard 30 are prone to delamination and peeling under the action of the shearing force, which causes the face paperboard 30 to lose connection with the paper honeycomb core plate 20, and affects the compression resistance, impact resistance and aesthetic appearance of the side plate 110.

[0082] In the paper honeycomb core plate 20 of the embodiment, the reinforcing lug plate 22 is arranged, and the honeycomb cylinder 21 and the reinforcing lug plate 22 are bonded with the face paperboard 30 together, so that the bonding area between the paper honeycomb core plate 20 and the face paperboard 30 is increased, which is conducive to strengthening the bonding strength between the paper honeycomb core plate 20 and the face paperboard 30, reducing the possibility that the paper honeycomb core plate 20 and the face paperboard 30 are prone to delamination and peeling due to the relatively small bonding strength between the paper honeycomb core plate 20 and the face paperboard 30, and improving the compression resistance and damage resistance of the side plate 110 of the packaging box 100 and the product quality of the paperboard piece 10 as a whole.

[0083] Although the present application has been described with reference to preferred embodiments, various modifications can be made to the application without departing from the scope of the application. In particular, the technical features mentioned in the various embodiments can be combined in any way, provided that there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A paperboard piece, characterized in that, The paper honeycomb core board comprises honeycomb cylinders and reinforcing lugs, the honeycomb cylinders are arranged in multiple rows, the honeycomb cylinders comprise openings, the reinforcing lugs are connected to the honeycomb cylinders, the reinforcing lugs are arranged corresponding to the openings, and the reinforcing lugs have an area smaller than that of the openings. The face paper board covers the openings of the honeycomb cylinders, and the end faces of the honeycomb cylinders and the reinforcing lugs are respectively bonded to the face paper board. The same honeycomb cylinder is provided with multiple reinforcing lugs arranged along the circumferential direction of the honeycomb cylinder.

2. The paperboard piece of claim 1, wherein, The multiple reinforcing lugs on the same honeycomb cylinder are arranged along the circumferential direction of the honeycomb cylinder.

3. The paperboard piece of claim 2, wherein, The honeycomb cylinder comprises multiple side walls connected in sequence, and the reinforcing lugs are arranged on at least one of the side walls of the honeycomb cylinder.

4. The paperboard piece according to any one of claims 1 to 3, characterized in that, The honeycomb cylinder comprises six side walls, and the cross section of the honeycomb cylinder is hexagonal.

5. The paperboard piece of claim 4, wherein, The paper honeycomb core board comprises multiple paper strips, each of which comprises opposite first and second surfaces, and the first and second surfaces are alternately provided with bonding areas, two adjacent paper strips are bonded by the bonding areas to form bonding portions, and each paper strip is bonded to form multiple honeycomb cylinders.

6. The paperboard piece of claim 5, wherein, The reinforcing lugs are integrally formed with the paper strips.

7. The paperboard piece of claim 6, wherein, The reinforcing lugs are rectangular, circular or triangular in shape.

8. The paperboard piece according to any one of claims 1 to 3, characterized in that, The paper honeycomb core board comprises an edge connecting portion connected to the outermost honeycomb cylinder, the edge connecting portion is provided with the reinforcing lugs, and the end face of the edge connecting portion and the reinforcing lugs provided on the edge connecting portion are respectively bonded to the face paper board.

9. The paperboard piece according to any one of claims 1 to 3, characterized in that, Along the axial direction of the honeycomb cylinder, the honeycomb cylinder comprises two opposite openings, the reinforcing lugs are arranged on the honeycomb cylinder corresponding to the two openings, and the face paper board is arranged on both sides of the honeycomb cylinder along the axial direction of the honeycomb cylinder.

10. The paperboard piece according to any one of claims 1 to 3, characterized in that, The packaging box comprises side plates comprising the paper board piece.

11. A packaging box, characterized in that The packaging box comprises side plates comprising the paper board piece.

12. The packaging box according to claim 11, characterized in that, ​

Images