A grey board carton processing process

Abstract

The present application provides a kind of grey board paper box processing technology, comprising the following steps: S1: cutting grey board paper into several unit paperboards with specific shape, the unit paperboard has a connection inclined surface, and the connection inclined surface has a protruding connection part;S2: apply water-based glue to the connection part of the unit paperboard, and preliminarily splice the connection part of the unit paperboard after applying glue;S3: apply force to the preliminarily spliced unit paperboard, compress the connection part, make each two cooperating unit paperboards form the required split angle, and then dry and form;The present grey board paper box processing technology compresses the connection part of the unit paperboard during forming the required combination angle, so that the bonding part is more compact, and it is not easy to deform after forming.Compared with the traditional process that needs to cover the paperboard with face paper, this process saves the use of glue for face paper and directly bonds the grey board paper, and the surface of the grey board paper can be gold-stamped, UV printed, etc., which is more environmentally friendly and avoids resource waste.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of carton processing, and particularly relates to a gray board carton processing technology. BACKGROUND

[0002] Cartons are widely used in packaging industry, manufacturing industry, transportation industry and other industries, and are usually made of paperboard, such as gray board. The gray board is a kind of paperboard made of recycled waste paper and is an environmentally friendly packaging material. The traditional gray board is not directly used for packaging when used as a packaging box. A layer of paper needs to be pasted on the outside to serve as a cover, or other materials need to be coated on the outside to ensure its appearance and strength, such as moon cake packaging boxes.

[0003] In the carton processing process, a cut paperboard is usually folded into shape, or a plurality of paperboards are bonded and spliced together. Generally, the carton formed by bending usually lacks hardness, such as ordinary express packaging boxes. However, the paperboard with high hardness is not easy to bend or is easy to break after bending, such as gray board. In the field of high-end packaging boxes, gray board is usually used to meet the needs of environmental protection and non-deformation at the same time. However, such a carton is usually made by bonding and splicing a plurality of unit gray board paperboards with water-based glue. Although the water-based glue has good bonding performance and produces less environmental pollution, the glueing surface of the unit paperboard usually softens during bonding to facilitate bonding. However, after the paperboard is made into a carton, the bonding part is prone to deformation or is not firm enough.

[0004] A Chinese invention patent with the application publication number CN 113787760 A provides a carton forming process and a carton production line. The carton production line includes a cutting unit, a gluing unit, a forming unit and a drying unit. The drying unit includes a drying box, drying plates, a first hydraulic cylinder, a second hydraulic cylinder and an exhaust fan. The four sides of the carton in the drying unit are provided with drying plates, and hot air pipes are arranged at positions corresponding to the side edges of the carton. This allows the carton to be evenly dried during the drying process, so that the phenomenon of shrinkage and deformation of the carton due to uneven heating is avoided. In addition, the water vapor generated by the carton during the drying process can be effectively discharged by the exhaust fan.

[0005] The above technical solution improves the drying measures in the production process to avoid deformation of the carton due to shrinkage. However, traditional paperboard gift boxes need to be wrapped with paper on the paperboard. The paper is used to wrap the joint of the paperboard or connect different parts of the box, and then the paper is used to make the logo and customized version of the brand to achieve the effect of beautifying and promoting. However, this kind of paperboard production needs to add the process of wrapping the paper, which affects the production efficiency and is not environmentally friendly.

[0006] The applicant further improves the unit paperboard of the linerboard constituting the carton to provide a new carton processing technology, saves the process steps, meets the firm bonding requirement under the condition of certain requirements for the hardness and strength of the carton, and saves resources and is more environmentally friendly while meeting the beautiful appearance of the carton. SUMMARY

[0007] The purpose of the present application is to overcome the shortcomings and deficiencies of the prior art and provide a linerboard carton processing technology. The technical scheme adopted by the present application comprises the following steps:

[0008] S1: cutting the linerboard into a plurality of unit paperboards with specific shapes, the unit paperboards being provided with an abutment inclined surface, and the abutment inclined surface being provided with an abutment portion protruding therefrom;

[0009] S2: applying water-based glue to the abutment portion of the unit paperboard, and preliminarily splicing the abutment portion of the unit paperboard after the glue is applied;

[0010] S3: after the water-based glue is soaked into the abutment portion, the preliminarily spliced unit paperboard is pressed to compress the abutment portion, so that the abutment inclined surfaces of each two cooperating unit paperboards are pressed and spliced to form a desired splicing angle, and then dried and formed.

[0011] As a preferred, the outer surfaces of the abutment portions of each two unit paperboards are cooperated to form an extension protruding from the abutment inclined surface during the preliminary splicing, and the extension is compressed in step S3 due to the soaking of the water-based glue into the abutment portion.

[0012] The abutment portion and the abutment inclined surface are integrally connected, and one unit paperboard is an integral whole. The separate introduction is only for the convenience of understanding.

[0013] As a preferred, the abutment portions of the two unit paperboards cooperated have an inclination angle α1 and α2 relative to the abutment inclined surface, preferably α1 = α2, which is convenient for production and splicing between each unit paperboard; the two abutment portions can be inclined from the same side to be compressed with each other, or located at different sides to form a complement and limit each other to increase the friction force.

[0014] As a preferred, the splicing angle β formed by the cooperation of the two unit paperboards is 90°, the abutment portions of the two unit paperboards cooperated have an inclination angle α1 and α2 relative to the abutment inclined surface, and the range of α1 and α2 is 1-5°, which can make the cross section of the abutment portions of the two unit paperboards be a right triangle or an obtuse triangle.

[0015] As preferred, the abutment part of each two unit paperboards is compressed in step S3, and the inner ends (the ends close to the inner space of the box) of the abutment parts of the compressed two unit paperboards are close to each other without being tightly attached, leaving a gap for the water-based adhesive to gel.

[0016] As preferred, the preparation process further comprises step S0, in which an inner box is prepared, and then the outer box is prepared in steps S1-S3, the outer wall of the inner box is bonded with the inner wall of the outer box, and the outer box comprises a plurality of unit paperboards connected and combined with each other, and the gap is the end of the outer box close to the inner box.

[0017] As preferred, the inner box is integrally folded and formed, or the inner box is spliced by a plurality of unit paperboards, and a fixing tape is attached at the splicing part of each two unit paperboards, the fixing tape extends from the outer side of one unit paperboard to the outer side of another unit paperboard through a corner, so as to enhance the fixing effect of each two unit paperboards; the outer side of the inner box refers to the side bonded with the outer box.

[0018] The beneficial effects of the present application are as follows: the carton processing process of the gray board paper box makes the abutment part of the unit paperboard have a protruding abutment part when the unit paperboard of the gray board paper is prepared, the unit paperboard is extruded after the abutment part is soaked by the water-based adhesive, so that the abutment part of the unit paperboard is extruded and compressed during the formation of the required combination angle, so that the bonding part is more compact and is not easy to deform after forming;

[0019] Compared with the traditional process in which facial paper is wrapped on the paperboard, the present process can save the facial paper and the use of adhesive for sticking the facial paper, and the gray board paper can be directly bonded, and the surface of the gray board paper can be gold-stamped, UV printed, embossed, etc., which is more environmentally friendly and saves resources. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings obtained according to these drawings without creative labor are still within the scope of the present application.

[0021] Figure 1 It is a unit paperboard in the process embodiment 1 of the present application;

[0022] Figure 2 It is a side view of the unit paperboard in the process embodiment 1 of the present application;

[0023] Figure 3 It is a paper box in the embodiment 1 of the present application;

[0024] Figure 4 It isFigure 3 Enlarged view at B;

[0025] Figure 5 For Figure 3 Enlarged view at C

[0026] Figure 6 For Figure 3 Enlarged view at A

[0027] Figure 7 For

[0028] Figure 8 For

[0029] Figure 9 For

[0030] Figure 10 For

[0031] Figure 11 For

[0032] Figure 12 For

[0033] Figure 13 For Figure 12 Enlarged view at D

[0034] In the figure, 1 - unit paperboard, 2 - connecting slope, 21 - connecting part, 3 - gap. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the accompanying drawings.

[0036] The directions and positions mentioned in the present application, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "top", "bottom", "side" and the like, are only the directions or positions of the drawings. Therefore, the directions and positions used are used to explain and understand the present application, and are not a limitation on the protection scope of the present application.

[0037] It is conventional in the art to make the connecting slopes of the unit paperboards of two greyboards just match, to form the required combination angle, for example, when the required angle is 90°, the conventional way is to make the inclination angles of the connecting slopes complementary, for example, by the way of 45° and 45°.

[0038] Example 1

[0039] As shown in Figures 1-6 , a grey board carton processing method comprises the following steps:

[0040] S1: cutting a grey board into a plurality of unit paperboards 1 with specific shapes, the unit paperboard 1 being provided with an abutment slope 2, the abutment slope 2 being provided with an abutment portion 21 protruding and inclined relative to the abutment slope 2;

[0041] S2: applying water-based glue to the abutment portion 21 of the unit paperboard 1 to soak the abutment portion 21, and preliminarily splicing the abutment portions 21 of the two unit paperboards 1 after being applied with glue to be attached, the abutment portions 21 of the two unit paperboards 1 being combined to form an extension protruding from the abutment slope 2, and the extension being soaked with the water-based glue;

[0042] S3: applying force to the preliminarily spliced unit paperboard 1 to compress the extension to be almost invisible, so that the abutment slopes 2 of the two unit paperboards 1 are combined to form a required combination angle, and then being dried and formed.

[0043] Further, the inclined angles of the abutment portions 21 of the two unit paperboards 1 relative to the abutment slope 2 are α1 and α2 respectively, and α1 and α2 are located at different sides of the unit paperboard 1 respectively (see Figure 6 ), so that the two unit paperboards 1 are complementary and limited to each other to increase the friction force when being compressed.

[0044] In the embodiment, the combination angle of the two unit paperboards 1 is 90°, and α1 and α2 are both 3°.

[0045] As shown in Figure 3 , the embodiment further comprises a step S0 of preparing an inner carton with smaller size, and then preparing an outer carton in steps S1 to S3, the outer wall of the inner carton being bonded to the inner wall of the outer carton, the inner carton and the outer carton both comprising a plurality of unit paperboards 1 connected and combined with each other, and a fixing tape being pasted at the joint of every two unit paperboards of the inner carton, the fixing tape extending from the outer side of one unit paperboard to the outer side of the other unit paperboard through an angle to enhance the fixing effect of the two unit paperboards; the structure of the inner carton and the outer carton being combined is beneficial to forming a rudimental frame of the carton body first, and then pasting the outer carton to the inner carton and compressing and combining, so as to further improve the strength of the carton.

[0046] On the basis of the above, a person skilled in the art can also set a structure of three or more layers of carton bodies combined.

[0047] Embodiment 2

[0048] As shown in Figure 7As shown, the difference between Embodiment 2 and Embodiment 1 is that the inclination angles of the connecting part 21 of the two unit paperboards 1 relative to the connecting inclined surface 2 are α1 and α2, respectively, and the connecting part 21 is inclined from the inside to the outside, so that the inner connecting part 21 of the two unit paperboards 1 has a larger deformation when squeezed, and the adhesion is more firm.

[0049] Example 3

[0050] like Figure 8 As shown, the difference between Embodiment 3 and Embodiment 1 is that the connecting part 21 of the two unit paperboards 1 protrudes relative to the connecting inclined surface 2 and does not have an inclined angle. The two connecting parts 21 are attached to form an extension section with a rectangular cross section, which is compressed during extrusion.

[0051] Example 4

[0052] like Figure 9 As shown, the difference between Embodiment 4 and Embodiment 3 is that the inner and outer sides of the extension segment formed by the two connecting parts 21 are arc-shaped transition edges.

[0053] Example 5

[0054] like Figure 9 As shown, the difference between Embodiment 5 and Embodiment 1 is that the connecting part 21 of the two unit cardboard 1 is a right trapezoid, and the cross section of the extension formed by the two bonding is rectangular, α1=α2.

[0055] Example 6

[0056] like Figure 11 As shown, based on Example 5, the inner box is made of folded gray cardboard.

[0057] Example 7

[0058] like Figure 12 and Figure 13 As shown, the connecting part 21 of each pair of unit paperboard 1 is compressed in step S3, and the inner ends (the end closer to the inner space of the box) of the connecting part 21 of the two unit paperboard 1 after compression are close to each other but not tightly stuck, leaving a gap 3 for the water-based adhesive to solidify, so that the connection is firm and beautiful; when preparing the inner box, the above-mentioned gap 3 is the end of the outer box close to the inner box.

[0059] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A processing technology for grey cardboard boxes, characterized in that... Includes the following steps: S1: Cut gray board paper into several unit paperboards (1) with specific shapes. The unit paperboards (1) have connecting slopes (2) and connecting slopes (2) have protruding connecting parts (21). S2: Apply water-based adhesive to the joint (21) of the unit paperboard (1) and perform preliminary splicing to make the joint (21) of the two unit paperboards (1) after applying water-based adhesive fit together; S3: After the water-based adhesive has soaked the joint (21), apply pressure to the preliminarily spliced ​​unit paperboard (1) to compress the joint (21), and then make the joint slope (2) of each pair of matching unit paperboards (1) press against each other and stick together to form the required splicing angle, and then dry and shape. The outer surfaces of the connecting parts (21) of each pair of unit cardboard (1) are matched so that they are joined together in the initial splicing process, forming an extension section protruding from the connecting slope (2), which is compressed in step S3; The splicing angle β required for the two unit paperboards (1) to be joined together is 90°. The connecting part (21) of the two unit paperboards (1) to be joined together has an inclination angle α1 and α2 relative to the connecting inclined surface (2), and the range of α1 and α2 is 1-5°. The joint (21) of each two unit paperboards (1) is compressed in step S3, and the inner ends of the joint (21) of the two unit paperboards (1) after compression are close to each other but not tightly attached, leaving a gap (3) for the water-based adhesive to solidify. It also includes step S0, in which an inner box is prepared, and then an outer box is prepared in steps S1 to S3. The outer wall of the inner box is bonded to the inner wall of the outer box, and the outer box includes a plurality of interconnected and combined unit cardboard (1).

2. The gray cardboard box processing technology according to claim 1, characterized in that, The inner box is formed by one-piece folding.

3. The gray cardboard box processing technology according to claim 1, characterized in that, The inner box is made up of several unit cardboard pieces (1), and a fixing tape is pasted at the joint of every two unit cardboard pieces (1) of the inner box. The fixing tape extends from the outer side of one unit cardboard piece (1) to the outer side of the other unit cardboard piece (1).

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